Fix darwin aarch64 release

2021-07-11 17:28:35 +02:00
149 changed files with 13216 additions and 36109 deletions
--- a/.github/release.yaml
+++ b/.github/release.yaml
@@ -1,109 +0,0 @@
-name: Create Release
-
-on:
-  push:
-    tags:
-      - 'v*'
-
-jobs:
-  draft_release:
-    name: Create Release
-    runs-on: ubuntu-latest
-    outputs:
-      upload_url: ${{ steps.create_release.outputs.upload_url }}
-
-    steps:
-      - name: Create Release
-        id: create_release
-        uses: actions/create-release@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          tag_name: ${{ github.ref }}
-          release_name: Release ${{ github.ref }}
-          body: |
-            Changes in this Release
-            - First Change
-            - Second Change
-          draft: true
-          prerelease: false
-
-  release-mac:
-    name: Create Release for macOS
-    needs: draft_release
-    runs-on: ${{ matrix.os }}
-    env:
-      MACOSX_DEPLOYMENT_TARGET: 10.13
-    strategy:
-      matrix:
-        os:
-          - macOS-10.15
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v2
-
-      - uses: haskell/actions/setup@v1.2
-        with:
-          ghc-version: 8.10.4
-          cabal-version: 3.4.0.0
-
-      - name: create ~/.local/bin
-        run: mkdir -p "$HOME/.local/bin"
-        shell: bash
-
-      - name: Add ~/.local/bin to PATH
-        run: echo "$HOME/.local/bin" >> $GITHUB_PATH
-        shell: bash
-
-      - name: Update cabal cache
-        run: cabal update
-        shell: bash
-
-      - name: Install cabal dependencies
-        run: cabal build --only-dependencies
-        shell: bash
-
-      - name: Build
-        run: cabal build -w ghc-${GHC_VERSION} --constraint="zlib +bundled-c-zlib" --constraint="lzma +static" -ftui
-        shell: bash
-
-      - name: Install
-        run: cp "$(cabal list-bin exe:ghcup)" ~/.local/bin/ghcup
-        shell: bash
-
-      - name: Strip
-        run: strip ~/.local/bin/ghcup
-        shell: bash
-
-      - name: Run tests
-        run: cabal test --constraint="zlib +bundled-c-zlib" --constraint="lzma +static" all
-        shell: bash
-
-      - name: Install git
-        run: brew install git
-
-      - name: set HOME
-        run: echo "HOME=$HOME" >> $GITHUB_ENV
-        shell: bash
-
-      - name: Set ASSET_PATH
-        run: echo "ASSET_PATH=$HOME/.local/bin/ghcup" >> $GITHUB_ENV
-        shell: bash
-
-      - name: Upload Release Asset
-        id: upload-release-asset
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ needs.draft_release.outputs.upload_url }}
-          asset_path: ${{ env.ASSET_PATH }}
-          asset_name: ghcup-${{ matrix.os }}
-          asset_content_type: application/octet-stream
-
-      - if: always()
-        uses: actions/upload-artifact@v2
-        with:
-          name: plan.json
-          path: ./dist-newstyle/cache/plan.json
-
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -1,109 +0,0 @@
-name: Create Release
-
-on:
-  push:
-    tags:
-      - 'v*'
-
-jobs:
-  draft_release:
-    name: Draft Release
-    runs-on: ubuntu-latest
-    outputs:
-      upload_url: ${{ steps.create_release.outputs.upload_url }}
-
-    steps:
-      - name: Create Release
-        id: create_release
-        uses: actions/create-release@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          tag_name: ${{ github.ref }}
-          release_name: Release ${{ github.ref }}
-          body: |
-            Changes in this Release
-            - First Change
-            - Second Change
-          draft: true
-          prerelease: false
-
-  release-mac:
-    name: Create Release
-    needs: draft_release
-    runs-on: ${{ matrix.os }}
-    env:
-      MACOSX_DEPLOYMENT_TARGET: 10.13
-    strategy:
-      matrix:
-        os:
-          - macOS-10.15
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v2
-
-      - uses: haskell/actions/setup@v1.2
-        with:
-          ghc-version: 8.10.7
-          cabal-version: 3.6.2.0
-
-      - name: create ~/.local/bin
-        run: mkdir -p "$HOME/.local/bin"
-        shell: bash
-
-      - name: Add ~/.local/bin to PATH
-        run: echo "$HOME/.local/bin" >> $GITHUB_PATH
-        shell: bash
-
-      - name: Update cabal cache
-        run: cabal update
-        shell: bash
-
-      - name: Install cabal dependencies
-        run: cabal build --only-dependencies --constraint="zlib +bundled-c-zlib" --constraint="lzma +static" -ftui
-        shell: bash
-
-      - name: Build
-        run: cabal build --constraint="zlib +bundled-c-zlib" --constraint="lzma +static" -ftui
-        shell: bash
-
-      - name: Install
-        run: cp "$(cabal list-bin exe:ghcup)" ~/.local/bin/ghcup
-        shell: bash
-
-      - name: Strip
-        run: strip ~/.local/bin/ghcup
-        shell: bash
-
-      - name: Run tests
-        run: cabal test --constraint="zlib +bundled-c-zlib" --constraint="lzma +static" all
-        shell: bash
-
-      - name: Install git
-        run: brew install git
-
-      - name: set HOME
-        run: echo "HOME=$HOME" >> $GITHUB_ENV
-        shell: bash
-
-      - name: Set ASSET_PATH
-        run: echo "ASSET_PATH=$HOME/.local/bin/ghcup" >> $GITHUB_ENV
-        shell: bash
-
-      - name: Upload Release Asset
-        id: upload-release-asset
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ needs.draft_release.outputs.upload_url }}
-          asset_path: ${{ env.ASSET_PATH }}
-          asset_name: ghcup-${{ matrix.os }}
-          asset_content_type: application/octet-stream
-
-      - if: always()
-        uses: actions/upload-artifact@v2
-        with:
-          name: plan.json
-          path: ./dist-newstyle/cache/plan.json
-
--- a/.github/workflows/shimgen.yaml
+++ b/.github/workflows/shimgen.yaml
@@ -1,29 +0,0 @@
-name: Shimgen CI
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-jobs:
-  build-shimgen:
-
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [windows-latest]
-
-    steps:
-    - uses: actions/checkout@v2
-    - uses: ilammy/msvc-dev-cmd@v1
-
-    - name: compile
-      run: cl /O1 scoop-better-shimexe/shim.c
-
-    - uses: actions/upload-artifact@v2
-      with:
-        name: shim.exe
-        path: shim.exe
-
--- a/.gitignore
+++ b/.gitignore
@@ -13,5 +13,3 @@ TAGS
 /tmp/
 .entangled
 release/
-releases/
-site/
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,8 +1,6 @@
 stages:
-  - checks
-  - quick-test
+  - hlint
  - test
-  - expensive-test
  - release

 variables:
@@ -11,26 +9,18 @@ variables:
  # Commit of ghc/ci-images repository from which to pull Docker images
  DOCKER_REV: 8d0224e6b2a08157649651e69302380b2bd24e11

-  # Sequential version number of all cached things.
-  # Bump to invalidate GitLab CI cache.
-  CACHE_REV: 0
-
-  GIT_SUBMODULE_STRATEGY: recursive
-
-
 ############################################################
 # CI Step
 ############################################################

 .debian:
-  image: "registry.gitlab.haskell.org/ghc/ci-images/x86_64-linux-deb10:$DOCKER_REV"
+  image: "registry.gitlab.haskell.org/ghc/ci-images/x86_64-linux-deb9:$DOCKER_REV"
  tags:
    - x86_64-linux
  variables:
    OS: "LINUX"
    ARCH: "64"
    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
-    CROSS: ""

 .alpine:64bit:
  image: "alpine:3.12"
@@ -58,7 +48,6 @@ variables:
    OS: "LINUX"
    ARCH: "ARM"
    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
-  retry: 2

 .linux:aarch64:
  image: "registry.gitlab.haskell.org/ghc/ci-images/aarch64-linux-deb10:$DOCKER_REV"
@@ -85,17 +74,9 @@ variables:
    ARCH: "ARM64"
    CABAL_DIR: "$CI_PROJECT_DIR/cabal"

-.freebsd13:
+.freebsd:
  tags:
-    - x86_64-freebsd13
-  variables:
-    OS: "FREEBSD"
-    ARCH: "64"
-    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
-
-.freebsd12:
-  tags:
-    - x86_64-freebsd12
+    - x86_64-freebsd
  variables:
    OS: "FREEBSD"
    ARCH: "64"
@@ -108,7 +89,6 @@ variables:
    OS: "WINDOWS"
    ARCH: "64"
    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
-  retry: 2

 .root_cleanup:
  after_script:
@@ -118,18 +98,13 @@ variables:
  script:
    - bash ./.gitlab/script/ghcup_version.sh
  variables:
-    JSON_VERSION: "0.0.7"
+    JSON_VERSION: "0.0.5"
  artifacts:
    expire_in: 2 week
    paths:
-      - test/golden
-      - dist-newstyle/cache/
+      - golden
    when: on_failure

-# .test_ghcup_scoop:
-  # script:
-    # - cl /O1 scoop-better-shimexe/shim.c
-
 .test_ghcup_version:linux:
  extends:
    - .test_ghcup_version
@@ -171,60 +146,35 @@ variables:
    - .test_ghcup_version
    - .darwin:aarch64
    - .root_cleanup
-  cache:
-    key: darwin-brew-$CACHE_REV
-    paths:
-      - .brew
-      - .brew_cache
-  before_script:
-    # Install brew locally in the project dir. Packages will also be installed here.
-    - '[ -e "$CI_PROJECT_DIR/.brew" ] || git clone --depth=1 https://github.com/Homebrew/brew $CI_PROJECT_DIR/.brew'
-    - export PATH="$CI_PROJECT_DIR/.brew/bin:$CI_PROJECT_DIR/.brew/sbin:$PATH"
-
-    # otherwise we seem to get intel binaries
-    - export HOMEBREW_CHANGE_ARCH_TO_ARM=1
-
-    # make sure to not pollute the machine with temp files etc
-    - mkdir -p $CI_PROJECT_DIR/.brew_cache
-    - export HOMEBREW_CACHE=$CI_PROJECT_DIR/.brew_cache
-    - mkdir -p $CI_PROJECT_DIR/.brew_logs
-    - export HOMEBREW_LOGS=$CI_PROJECT_DIR/.brew_logs
-    - mkdir -p /private/tmp/.brew_tmp
-    - export HOMEBREW_TEMP=/private/tmp/.brew_tmp
-
-    # update and install packages
-    - brew update
-    - brew install llvm
-    - brew install autoconf automake coreutils
  script: |
-    export PATH="$CI_PROJECT_DIR/.brew/opt/llvm/bin:$CI_PROJECT_DIR/.brew/bin:$CI_PROJECT_DIR/.brew/sbin:$PATH"
-    export CC=$CI_PROJECT_DIR/.brew/opt/llvm/bin/clang
-    export CXX=$CI_PROJECT_DIR/.brew/opt/llvm/bin/clang++
-    export LD=ld
-    export AR=$CI_PROJECT_DIR/.brew/opt/llvm/bin/llvm-ar
-    export RANLIB=$CI_PROJECT_DIR/.brew/opt/llvm/bin/llvm-ranlib
-    ./.gitlab/before_script/darwin/install_deps.sh
-    ./.gitlab/script/ghcup_version.sh
+    set -Eeuo pipefail
+    function runInNixShell() {
+      time nix-shell $CI_PROJECT_DIR/.gitlab/shell.nix \
+        -I nixpkgs=https://github.com/angerman/nixpkgs/archive/75f7281738b.tar.gz \
+        --argstr system "aarch64-darwin" \
+        --pure \
+        --keep CI_PROJECT_DIR \
+        --keep MACOSX_DEPLOYMENT_TARGET \
+        --keep JSON_VERSION \
+        --keep ARTIFACT \
+        --keep OS \
+        --keep ARCH \
+        --keep CABAL_DIR \
+        --keep GHC_VERSION \
+        --keep CABAL_VERSION \
+        --run "$1" 2>&1
+    }
+    runInNixShell ./.gitlab/before_script/darwin/install_deps.sh 2>&1
+    runInNixShell ./.gitlab/script/ghcup_version.sh 2>&1

-.test_ghcup_version:freebsd12:
+.test_ghcup_version:freebsd:
  extends:
    - .test_ghcup_version
-    - .freebsd12
+    - .freebsd
    - .root_cleanup
  before_script:
    - ./.gitlab/before_script/freebsd/install_deps.sh

-.test_ghcup_version:freebsd13:
-  extends:
-    - .test_ghcup_version
-    - .freebsd13
-    - .root_cleanup
-  before_script:
-    - sudo pkg update
-    - sudo pkg install --yes compat12x-amd64
-    - sudo ln -s libncurses.so.6 /usr/local/lib/libncurses.so.6.2
-    - ./.gitlab/before_script/freebsd/install_deps.sh
-
 .test_ghcup_version:windows:
  extends:
    - .test_ghcup_version
@@ -234,12 +184,6 @@ variables:
    - set CABAL_DIR="$CI_PROJECT_DIR/cabal"
    - bash ./.gitlab/before_script/windows/install_deps.sh

-# .test_ghcup_scoop:windows:
-  # extends:
-    # - .windows
-    # - .test_ghcup_scoop
-    # - .root_cleanup
-
 .release_ghcup:
  script:
    - bash ./.gitlab/script/ghcup_release.sh
@@ -247,11 +191,10 @@ variables:
    expire_in: 2 week
    paths:
      - out
-      - dist-newstyle/cache/
  only:
    - tags
  variables:
-    JSON_VERSION: "0.0.7"
+    JSON_VERSION: "0.0.5"

 ######## stack test ########

@@ -268,195 +211,138 @@ test:linux:stack:
 ######## bootstrap test ########

 test:linux:bootstrap_script:
-  stage: quick-test
+  stage: test
  before_script:
    - ./.gitlab/before_script/linux/install_deps_minimal.sh
  script:
    - ./.gitlab/script/ghcup_bootstrap.sh
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
  extends:
    - .debian
    - .root_cleanup
  needs: []

 test:windows:bootstrap_powershell_script:
-  stage: quick-test
+  stage: test
  script:
-    - ./scripts/bootstrap/bootstrap-haskell.ps1 -InstallDir $CI_PROJECT_DIR -BootstrapUrl $CI_PROJECT_DIR/bootstrap-haskell -InBash
+    - ./bootstrap-haskell.ps1 -InstallDir $CI_PROJECT_DIR -BootstrapUrl $CI_PROJECT_DIR/bootstrap-haskell -InBash
  after_script:
    - "[Environment]::SetEnvironmentVariable('GHCUP_INSTALL_BASE_PREFIX', $null, [System.EnvironmentVariableTarget]::User)"
    - "[Environment]::SetEnvironmentVariable('GHCUP_MSYS2', $null, [System.EnvironmentVariableTarget]::User)"
    - "[Environment]::SetEnvironmentVariable('CABAL_DIR', $null, [System.EnvironmentVariableTarget]::User)"
    - bash ./.gitlab/after_script.sh
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
  extends:
    - .windows
  needs: []

 ######## linux test ########

-test:linux:
+test:linux:recommended:
  stage: test
  extends: .test_ghcup_version:linux
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
  needs: []

-test:linux:hls:
-  stage: expensive-test
-  extends:
-    - .test_ghcup_version
-    - .debian
+test:linux:latest:
+  stage: test
+  extends: .test_ghcup_version:linux
  variables:
-    GHC_VERSION: "8.10.7"
-    HLS_TARGET_VERSION: "1.4.0"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "9.0.1"
+    CABAL_VERSION: "3.4.0.0"
  needs: []
-  when: manual
-  allow_failure: true
-  before_script:
-    - ./.gitlab/before_script/linux/install_deps.sh
-  script:
-    - ./.gitlab/script/ghcup_hls.sh
-
-test:linux:cross-armv7:
-  stage: expensive-test
-  extends:
-    - .test_ghcup_version
-    - .debian
-  variables:
-    GHC_VERSION: "8.10.6"
-    GHC_TARGET_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-    CROSS: "arm-linux-gnueabihf"
-  needs: []
-  when: manual
-  allow_failure: true
-  before_script:
-    - ./.gitlab/before_script/linux/install_deps.sh
-  script:
-    - ./.gitlab/script/ghcup_cross.sh
-
-test:linux:git:hadrian:
-  stage: expensive-test
-  extends:
-    - .test_ghcup_version
-    - .debian
-  variables:
-    GHC_VERSION: "8.10.7"
-    GHC_GIT_TAG: "ghc-9.0.1-release"
-    GHC_GIT_VERSION: "9.0.1"
-    CABAL_VERSION: "3.6.2.0"
-    CROSS: ""
-  needs: []
-  when: manual
-  allow_failure: true
-  before_script:
-    - ./.gitlab/before_script/linux/install_deps.sh
-  script:
-    - ./.gitlab/script/ghcup_git.sh
-

 ######## linux 32bit test ########

-test:linux:32bit:
+test:linux:recommended:32bit:
  stage: test
  extends: .test_ghcup_version:linux32
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.2.0.0"
  needs: []

 ######## arm tests ########

-test:linux:armv7:
+test:linux:recommended:armv7:
  stage: test
  extends: .test_ghcup_version:armv7
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-    CROSS: ""
+    GHC_VERSION: "8.10.4"
+    CABAL_VERSION: "3.4.0.0"
  when: manual
  needs: []

-test:linux:aarch64:
+test:linux:recommended:aarch64:
  stage: test
  extends: .test_ghcup_version:aarch64
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-    CROSS: ""
+    GHC_VERSION: "8.10.4"
+    CABAL_VERSION: "3.4.0.0"
  when: manual
  needs: []

 ######## darwin test ########

-test:mac:
+test:mac:recommended:
  stage: test
  extends: .test_ghcup_version:darwin
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.4"
+    CABAL_VERSION: "3.4.0.0"
  needs: []

-test:mac:aarch64:
+test:mac:latest:
+  stage: test
+  extends: .test_ghcup_version:darwin
+  variables:
+    GHC_VERSION: "9.0.1"
+    CABAL_VERSION: "3.4.0.0"
+  needs: []
+
+test:mac:recommended:aarch64:
  stage: test
  extends: .test_ghcup_version:darwin:aarch64
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
  needs: []
  allow_failure: true
-  when: manual


 ######## freebsd test ########

-test:freebsd12:
+test:freebsd:recommended:
  stage: test
-  extends: .test_ghcup_version:freebsd12
+  extends: .test_ghcup_version:freebsd
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-  allow_failure: true # freebsd runners are unreliable
-  when: manual
-  needs: []
-
-test:freebsd13:
-  stage: test
-  extends: .test_ghcup_version:freebsd13
-  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.4"
+    CABAL_VERSION: "3.4.0.0"
  allow_failure: true # freebsd runners are unreliable
  when: manual
  needs: []

 ######## windows test ########

-test:windows:
+test:windows:recommended:
  stage: test
  extends: .test_ghcup_version:windows
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
  needs: []

-# test:windows:scoop:
-  # stage: test
-  # extends: .test_ghcup_scoop:windows
-  # needs: []
-
 ######## linux release ########

 release:linux:64bit:
  stage: release
-  needs: ["test:linux"]
+  needs: ["test:linux:recommended", "test:linux:latest"]
  extends:
    - .alpine:64bit
    - .release_ghcup
@@ -464,13 +350,13 @@ release:linux:64bit:
    - ./.gitlab/before_script/linux/alpine/install_deps.sh
  variables:
    ARTIFACT: "x86_64-linux-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"


 release:linux:32bit:
  stage: release
-  needs: ["test:linux:32bit"]
+  needs: ["test:linux:recommended:32bit"]
  extends:
    - .alpine:32bit
    - .release_ghcup
@@ -478,12 +364,12 @@ release:linux:32bit:
    - ./.gitlab/before_script/linux/alpine/install_deps.sh
  variables:
    ARTIFACT: "i386-linux-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.2.0.0"

 release:linux:armv7:
  stage: release
-  needs: ["test:linux:armv7"]
+  needs: ["test:linux:recommended:armv7"]
  extends:
    - .linux:armv7
    - .release_ghcup
@@ -491,13 +377,12 @@ release:linux:armv7:
    - ./.gitlab/before_script/linux/install_deps.sh
  variables:
    ARTIFACT: "armv7-linux-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-    CROSS: ""
+    GHC_VERSION: "8.10.4"
+    CABAL_VERSION: "3.4.0.0"

 release:linux:aarch64:
  stage: release
-  needs: ["test:linux:aarch64"]
+  needs: ["test:linux:recommended:aarch64"]
  extends:
    - .linux:aarch64
    - .release_ghcup
@@ -505,15 +390,14 @@ release:linux:aarch64:
    - ./.gitlab/before_script/linux/install_deps.sh
  variables:
    ARTIFACT: "aarch64-linux-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-    CROSS: ""
+    GHC_VERSION: "8.10.4"
+    CABAL_VERSION: "3.4.0.0"

 ######## darwin release ########

 release:darwin:
  stage: release
-  needs: ["test:mac"]
+  needs: ["test:mac:recommended", "test:mac:latest"]
  extends:
    - .darwin
    - .release_ghcup
@@ -522,100 +406,67 @@ release:darwin:
    - ./.gitlab/before_script/darwin/install_deps.sh
  variables:
    ARTIFACT: "x86_64-apple-darwin-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
    MACOSX_DEPLOYMENT_TARGET: "10.7"

 release:darwin:aarch64:
  stage: release
-  needs: ["test:mac:aarch64"]
+  needs: ["test:mac:recommended:aarch64"]
  extends:
    - .darwin:aarch64
    - .release_ghcup
    - .root_cleanup
-  cache:
-    key: darwin-brew-$CACHE_REV
-    paths:
-      - .brew
-      - .brew_cache
-  before_script:
-    # Install brew locally in the project dir. Packages will also be installed here.
-    - '[ -e "$CI_PROJECT_DIR/.brew" ] || git clone --depth=1 https://github.com/Homebrew/brew $CI_PROJECT_DIR/.brew'
-    - export PATH="$CI_PROJECT_DIR/.brew/bin:$CI_PROJECT_DIR/.brew/sbin:$PATH"
-
-    # otherwise we seem to get intel binaries
-    - export HOMEBREW_CHANGE_ARCH_TO_ARM=1
-
-    # make sure to not pollute the machine with temp files etc
-    - mkdir -p $CI_PROJECT_DIR/.brew_cache
-    - export HOMEBREW_CACHE=$CI_PROJECT_DIR/.brew_cache
-    - mkdir -p $CI_PROJECT_DIR/.brew_logs
-    - export HOMEBREW_LOGS=$CI_PROJECT_DIR/.brew_logs
-    - mkdir -p /private/tmp/.brew_tmp
-    - export HOMEBREW_TEMP=/private/tmp/.brew_tmp
-
-    # update and install packages
-    - brew update
-    - brew install llvm
-    - brew install autoconf automake
  script: |
-    export PATH="$CI_PROJECT_DIR/.brew/opt/llvm/bin:$CI_PROJECT_DIR/.brew/bin:$CI_PROJECT_DIR/.brew/sbin:$PATH"
-    export CC=$CI_PROJECT_DIR/.brew/opt/llvm/bin/clang
-    export CXX=$CI_PROJECT_DIR/.brew/opt/llvm/bin/clang++
-    export LD=ld
-    export AR=$CI_PROJECT_DIR/.brew/opt/llvm/bin/llvm-ar
-    export RANLIB=$CI_PROJECT_DIR/.brew/opt/llvm/bin/llvm-ranlib
-    ./.gitlab/before_script/darwin/install_deps.sh
-    ./.gitlab/script/ghcup_release.sh
+    set -Eeuo pipefail
+    function runInNixShell() {
+      time nix-shell .gitlab/shell.nix \
+        -I nixpkgs=https://github.com/angerman/nixpkgs/archive/75f7281738b.tar.gz \
+        --argstr system "aarch64-darwin" \
+        --pure \
+        --keep CI_PROJECT_DIR \
+        --keep MACOSX_DEPLOYMENT_TARGET \
+        --keep JSON_VERSION \
+        --keep ARTIFACT \
+        --keep OS \
+        --keep ARCH \
+        --keep CABAL_DIR \
+        --keep GHC_VERSION \
+        --keep CABAL_VERSION \
+        --run "$1" 2>&1
+    }
+    runInNixShell ./.gitlab/before_script/darwin/install_deps.sh 2>&1
+    runInNixShell ./.gitlab/script/ghcup_release.sh 2>&1
  variables:
    ARTIFACT: "aarch64-apple-darwin-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
    MACOSX_DEPLOYMENT_TARGET: "10.7"
  allow_failure: true
-  when: manual


 ######## freebsd release ########

-release:freebsd12:
+release:freebsd:
  stage: release
-  needs: ["test:freebsd12"]
+  needs: ["test:freebsd:recommended"]
  extends:
-    - .freebsd12
+    - .freebsd
    - .release_ghcup
    - .root_cleanup
  before_script:
    - ./.gitlab/before_script/freebsd/install_deps.sh
  variables:
    ARTIFACT: "x86_64-portbld-freebsd-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-  allow_failure: true
-
-release:freebsd13:
-  stage: release
-  needs: ["test:freebsd13"]
-  extends:
-    - .freebsd13
-    - .release_ghcup
-    - .root_cleanup
-  before_script:
-    - sudo pkg update
-    - sudo pkg install --yes compat12x-amd64
-    - sudo ln -s libncurses.so.6 /usr/local/lib/libncurses.so.6.2
-    - ./.gitlab/before_script/freebsd/install_deps.sh
-  variables:
-    ARTIFACT: "x86_64-portbld-freebsd-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
  allow_failure: true

 ######## windows release ########

 release:windows:
  stage: release
-  needs: ["test:windows"]
+  needs: ["test:windows:recommended"]
  extends:
    - .windows
    - .release_ghcup
@@ -624,46 +475,26 @@ release:windows:
    - bash ./.gitlab/before_script/windows/install_deps.sh
  variables:
    ARTIFACT: "x86_64-mingw64-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"

 ######## hlint ########

 hlint:
-  stage: checks
+  stage: hlint
  extends:
-    - .debian
+    - .alpine:64bit
+  before_script:
+    - ./.gitlab/before_script/linux/alpine/install_deps.sh
  script:
-    - curl -sSL https://raw.github.com/ndmitchell/hlint/master/misc/run.sh | sh -s -- -r lib/ test/
+    - ./.gitlab/script/hlint.sh
+  variables:
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
+    JSON_VERSION: "0.0.4"
  allow_failure: true
  artifacts:
    expire_in: 2 week
    paths:
      - report.html
    when: on_failure
-
-######## mkdocs ########
-
-mkdocs:
-  stage: checks
-  extends:
-    - .debian
-  before_script:
-    - sudo apt-get update -y
-    - sudo apt-get install -y python3-pip
-    - pip3 install mkdocs
-  script:
-    - ~/.local/bin/mkdocs build
-  allow_failure: true
-
-######## shellcheck ########
-
-shellcheck:
-  image: "koalaman/shellcheck-alpine"
-  tags:
-    - x86_64-linux
-  stage: checks
-  script:
-    - shellcheck scripts/bootstrap/bootstrap-haskell
-  allow_failure: true
-
--- a/.gitlab/after_script.sh
+++ b/.gitlab/after_script.sh
@@ -12,8 +12,4 @@ if [ "${OS}" = "WINDOWS" ] ; then
 	rm -Rf /c/ghcup
 fi

-if [ "${OS}" = "DARWIN" ] ; then
-	rm -Rf /private/tmp/.brew_tmp
-fi
-
 exit 0
--- a/.gitlab/before_script/darwin/install_deps.sh
+++ b/.gitlab/before_script/darwin/install_deps.sh
@@ -7,7 +7,7 @@ set -eux
 mkdir -p "${TMPDIR}"

 if [ $ARCH = 'ARM64' ] ; then
-	curl -sSfL https://downloads.haskell.org/~ghcup/aarch64-apple-darwin-ghcup > ./ghcup-bin
+	curl -sSfL https://downloads.haskell.org/~ghcup/0.1.15.1/aarch64-apple-darwin-ghcup-0.1.15.1 > ./ghcup-bin
 	chmod +x ghcup-bin
 else
 	curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-apple-darwin-ghcup > ./ghcup-bin
--- a/.gitlab/before_script/freebsd/install_deps.sh
+++ b/.gitlab/before_script/freebsd/install_deps.sh
@@ -8,20 +8,12 @@ set -eux

 mkdir -p "${TMPDIR}"

-if freebsd-version | grep -E '^12.*' ; then
-	freebsd_ver=12
-elif freebsd-version | grep -E '^13.*' ; then
-	freebsd_ver=13
-else
-	(>&2 echo "Unsupported FreeBSD version! Please report a bug at https://gitlab.haskell.org/haskell/ghcup-hs/-/issues")
-	exit 1
-fi
-curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-freebsd${freebsd_ver}-ghcup > ./ghcup-bin
+curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-portbld-freebsd-ghcup > ./ghcup-bin
 chmod +x ghcup-bin

-./ghcup-bin -v upgrade -i -f
-./ghcup-bin -v install ${GHC_VERSION}
-./ghcup-bin -v set ${GHC_VERSION}
-./ghcup-bin -v install-cabal ${CABAL_VERSION}
+./ghcup-bin upgrade -i -f
+./ghcup-bin install ${GHC_VERSION}
+./ghcup-bin set ${GHC_VERSION}
+./ghcup-bin install-cabal ${CABAL_VERSION}

 exit 0
--- a/.gitlab/before_script/linux/alpine/install_deps.sh
+++ b/.gitlab/before_script/linux/alpine/install_deps.sh
@@ -52,7 +52,3 @@ apk add --no-cache \
 	xz-dev \
 	ncurses-static

-if [ "${ARCH}" = "32" ] ; then
-	apk add --no-cache \
-		bsd-compat-headers
-fi
--- a/.gitlab/before_script/linux/install_deps.sh
+++ b/.gitlab/before_script/linux/install_deps.sh
@@ -7,21 +7,60 @@ set -eux
 mkdir -p "${TMPDIR}"

 sudo apt-get update -y
-sudo apt-get install -y libnuma-dev zlib1g-dev libgmp-dev libgmp10 libssl-dev liblzma-dev libbz2-dev git wget lsb-release software-properties-common gnupg2 apt-transport-https gcc autoconf automake build-essential
+sudo apt-get install -y libnuma-dev zlib1g-dev libgmp-dev libgmp10 libssl-dev liblzma-dev libbz2-dev git wget lsb-release software-properties-common gnupg2 apt-transport-https

-if [ "${CROSS}" = "arm-linux-gnueabihf" ] ; then
-	sudo apt-get install -y gcc-arm-linux-gnueabihf
-	sudo dpkg --add-architecture armhf
-	sudo apt-get update -y
-	sudo apt-get install -y libncurses-dev:armhf
-fi
+case "${ARCH}" in
+	ARM*)
+		case "${ARCH}" in
+			"ARM")
+				ghc_url=https://downloads.haskell.org/~ghc/${GHC_VERSION}/ghc-${GHC_VERSION}-armv7-deb10-linux.tar.xz
+				cabal_url=home.smart-cactus.org/~ben/cabal-install-${CABAL_VERSION}-armv7-linux-bootstrapped.tar.xz
+				;;
+			"ARM64")
+				ghc_url=https://downloads.haskell.org/~ghc/${GHC_VERSION}/ghc-${GHC_VERSION}-aarch64-deb10-linux.tar.xz
+				cabal_url=https://downloads.haskell.org/~cabal/cabal-install-${CABAL_VERSION}/cabal-install-${CABAL_VERSION}-aarch64-ubuntu-18.04.tar.xz
+				;;
+			*)
+				exit 1 ;;
+		esac

-export BOOTSTRAP_HASKELL_NONINTERACTIVE=1
-export BOOTSTRAP_HASKELL_GHC_VERSION=$GHC_VERSION
-export BOOTSTRAP_HASKELL_CABAL_VERSION=$CABAL_VERSION
-export BOOTSTRAP_HASKELL_VERBOSE=1
+		mkdir -p "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin

-curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
+		curl -O "${ghc_url}"
+		tar -xf ghc-*.tar.*
+		cd ghc-${GHC_VERSION}
+		./configure --prefix="${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/ghc/${GHC_VERSION}
+		make install
+		for i in "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/ghc/${GHC_VERSION}/bin/*-${GHC_VERSION} ; do
+			ln -s "${i}" "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/${i##*/}
+		done
+		for x in "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/*-${GHC_VERSION} ; do
+			ln -s ${x##*/} ${x%-${GHC_VERSION}}
+		done
+		cd ..
+		rm -rf ghc-${GHC_VERSION} ghc-*.tar.*
+		unset x i

-rm "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/ghcup
+		mkdir cabal-install
+		cd cabal-install
+		curl -O "${cabal_url}"
+		tar -xf cabal-install-*
+		mv cabal "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/cabal
+		cd ..
+		rm -rf cabal-install
+
+		;;
+	*) 
+		url=https://downloads.haskell.org/~ghcup/x86_64-linux-ghcup
+
+		curl -sSfL "${url}" > ./ghcup-bin
+		chmod +x ghcup-bin
+
+		./ghcup-bin upgrade -i -f
+		./ghcup-bin install ${GHC_VERSION}
+		./ghcup-bin set ${GHC_VERSION}
+		./ghcup-bin install-cabal ${CABAL_VERSION}
+
+		;;
+esac

--- a/.gitlab/before_script/windows/install_deps.sh
+++ b/.gitlab/before_script/windows/install_deps.sh
@@ -9,7 +9,7 @@ mkdir -p "${TMPDIR}" "${CABAL_DIR}"
 mkdir -p "$GHCUP_INSTALL_BASE_PREFIX/ghcup/bin"

 CI_PROJECT_DIR=$(pwd)
-curl -o ghcup.exe https://downloads.haskell.org/~ghcup/x86_64-mingw64-ghcup.exe
+curl -o ghcup.exe https://downloads.haskell.org/~ghcup/0.1.15.1/x86_64-mingw64-ghcup-0.1.15.1.exe
 chmod +x ghcup.exe

 ./ghcup.exe install ${GHC_VERSION}
--- a/.gitlab/ghc-8.10.3-linux.files
+++ b/.gitlab/ghc-8.10.3-linux.files
--- a/.gitlab/ghc-8.10.3-windows.files
+++ b/.gitlab/ghc-8.10.3-windows.files
--- a/.gitlab/ghcup-run.files
+++ b/.gitlab/ghcup-run.files
@@ -1,37 +0,0 @@
-.
-./cabal
-./ghc
-./ghc-8.10.7
-./ghc-pkg
-./ghc-pkg-8.10.7
-./ghci
-./ghci-8.10.7
-./haddock
-./haddock-8.10.7
-./haskell-language-server-8.10.6
-./haskell-language-server-8.10.6~1.6.1.0
-./haskell-language-server-8.10.7
-./haskell-language-server-8.10.7~1.6.1.0
-./haskell-language-server-8.6.5
-./haskell-language-server-8.6.5~1.6.1.0
-./haskell-language-server-8.8.4
-./haskell-language-server-8.8.4~1.6.1.0
-./haskell-language-server-9.0.1
-./haskell-language-server-9.0.1~1.6.1.0
-./haskell-language-server-9.0.2
-./haskell-language-server-9.0.2~1.6.1.0
-./haskell-language-server-9.2.1
-./haskell-language-server-9.2.1~1.6.1.0
-./haskell-language-server-wrapper
-./haskell-language-server-wrapper-1.6.1.0
-./hp2ps
-./hp2ps-8.10.7
-./hpc
-./hpc-8.10.7
-./hsc2hs
-./hsc2hs-8.10.7
-./runghc
-./runghc-8.10.7
-./runhaskell
-./runhaskell-8.10.7
-./stack
--- a/.gitlab/ghcup-run.files.windows
+++ b/.gitlab/ghcup-run.files.windows
@@ -1,81 +0,0 @@
-.
-./cabal.exe
-./cabal.shim
-./ghc-8.10.7.exe
-./ghc-8.10.7.shim
-./ghc-pkg-8.10.7.exe
-./ghc-pkg-8.10.7.shim
-./ghc-pkg.exe
-./ghc-pkg.shim
-./ghc.exe
-./ghc.shim
-./ghci-8.10.7.exe
-./ghci-8.10.7.shim
-./ghci.exe
-./ghci.shim
-./ghcii-8.10.7.sh-8.10.7.exe
-./ghcii-8.10.7.sh-8.10.7.shim
-./ghcii-8.10.7.sh.exe
-./ghcii-8.10.7.sh.shim
-./ghcii.sh-8.10.7.exe
-./ghcii.sh-8.10.7.shim
-./ghcii.sh.exe
-./ghcii.sh.shim
-./haddock-8.10.7.exe
-./haddock-8.10.7.shim
-./haddock.exe
-./haddock.shim
-./haskell-language-server-8.10.6.exe
-./haskell-language-server-8.10.6.shim
-./haskell-language-server-8.10.6~1.6.1.0.exe
-./haskell-language-server-8.10.6~1.6.1.0.shim
-./haskell-language-server-8.10.7.exe
-./haskell-language-server-8.10.7.shim
-./haskell-language-server-8.10.7~1.6.1.0.exe
-./haskell-language-server-8.10.7~1.6.1.0.shim
-./haskell-language-server-8.6.5.exe
-./haskell-language-server-8.6.5.shim
-./haskell-language-server-8.6.5~1.6.1.0.exe
-./haskell-language-server-8.6.5~1.6.1.0.shim
-./haskell-language-server-8.8.4.exe
-./haskell-language-server-8.8.4.shim
-./haskell-language-server-8.8.4~1.6.1.0.exe
-./haskell-language-server-8.8.4~1.6.1.0.shim
-./haskell-language-server-9.0.1.exe
-./haskell-language-server-9.0.1.shim
-./haskell-language-server-9.0.1~1.6.1.0.exe
-./haskell-language-server-9.0.1~1.6.1.0.shim
-./haskell-language-server-9.0.2.exe
-./haskell-language-server-9.0.2.shim
-./haskell-language-server-9.0.2~1.6.1.0.exe
-./haskell-language-server-9.0.2~1.6.1.0.shim
-./haskell-language-server-9.2.1.exe
-./haskell-language-server-9.2.1.shim
-./haskell-language-server-9.2.1~1.6.1.0.exe
-./haskell-language-server-9.2.1~1.6.1.0.shim
-./haskell-language-server-wrapper-1.6.1.0.exe
-./haskell-language-server-wrapper-1.6.1.0.shim
-./haskell-language-server-wrapper.exe
-./haskell-language-server-wrapper.shim
-./hp2ps-8.10.7.exe
-./hp2ps-8.10.7.shim
-./hp2ps.exe
-./hp2ps.shim
-./hpc-8.10.7.exe
-./hpc-8.10.7.shim
-./hpc.exe
-./hpc.shim
-./hsc2hs-8.10.7.exe
-./hsc2hs-8.10.7.shim
-./hsc2hs.exe
-./hsc2hs.shim
-./runghc-8.10.7.exe
-./runghc-8.10.7.shim
-./runghc.exe
-./runghc.shim
-./runhaskell-8.10.7.exe
-./runhaskell-8.10.7.shim
-./runhaskell.exe
-./runhaskell.shim
-./stack.exe
-./stack.shim
--- a/.gitlab/ghcup_env
+++ b/.gitlab/ghcup_env
@@ -1,11 +1,9 @@
 if [ "${OS}" = "WINDOWS" ] ; then
 	export GHCUP_INSTALL_BASE_PREFIX="$CI_PROJECT_DIR"
-	export GHCUP_BIN="$CI_PROJECT_DIR/ghcup/bin"
-	export PATH="$GHCUP_BIN:$CI_PROJECT_DIR/.local/bin:$PATH"
+	export PATH="$GHCUP_INSTALL_BASE_PREFIX/ghcup/bin:$CI_PROJECT_DIR/.local/bin:$PATH"
 	export TMPDIR="$CI_PROJECT_DIR/tmp"
 else
 	export GHCUP_INSTALL_BASE_PREFIX="$CI_PROJECT_DIR"
-	export GHCUP_BIN="$CI_PROJECT_DIR/.ghcup/bin"
-	export PATH="$GHCUP_BIN:$CI_PROJECT_DIR/.local/bin:$PATH"
+	export PATH="$CI_PROJECT_DIR/.ghcup/bin:$CI_PROJECT_DIR/.local/bin:/opt/llvm/bin:$PATH"
 	export TMPDIR="$CI_PROJECT_DIR/tmp"
 fi
--- a/.gitlab/script/ghcup_bootstrap.sh
+++ b/.gitlab/script/ghcup_bootstrap.sh
@@ -24,7 +24,7 @@ export BOOTSTRAP_HASKELL_NONINTERACTIVE=yes
 export BOOTSTRAP_HASKELL_GHC_VERSION=$GHC_VERSION
 export BOOTSTRAP_HASKELL_CABAL_VERSION=$CABAL_VERSION

-./scripts/bootstrap/bootstrap-haskell
+./bootstrap-haskell

 [ "$(ghc --numeric-version)" = "${GHC_VERSION}" ]

--- a/.gitlab/script/ghcup_cross.sh
+++ b/.gitlab/script/ghcup_cross.sh
@@ -1,52 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup_env"
-
-mkdir -p "$CI_PROJECT_DIR"/.local/bin
-
-CI_PROJECT_DIR=$(pwd)
-
-ecabal() {
-	cabal "$@"
-}
-
-eghcup() {
-	ghcup -v -c -s file://$CI_PROJECT_DIR/data/metadata/ghcup-${JSON_VERSION}.yaml "$@"
-}
-
-git describe --always
-
-### build
-
-ecabal update
-
-ecabal build -w ghc-${GHC_VERSION}
-cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup')" "$CI_PROJECT_DIR"/.local/bin/ghcup
-
-### cleanup
-
-rm -rf "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup
-
-### manual cli based testing
-
-eghcup --numeric-version
-
-eghcup install ghc ${GHC_VERSION}
-eghcup set ghc ${GHC_VERSION}
-eghcup install cabal ${CABAL_VERSION}
-
-cabal --version
-
-eghcup debug-info
-
-eghcup compile ghc -j $(nproc) -v ${GHC_TARGET_VERSION} -b ${GHC_VERSION} -x ${CROSS} -- --enable-unregisterised
-eghcup set ghc ${CROSS}-${GHC_TARGET_VERSION}
-
-[ `$(eghcup whereis ghc ${CROSS}-${GHC_TARGET_VERSION}) --numeric-version` = "${GHC_TARGET_VERSION}" ]
-
-# nuke
-eghcup nuke
-[ ! -e "${GHCUP_INSTALL_BASE_PREFIX}/.ghcup" ]
-
--- a/.gitlab/script/ghcup_git.sh
+++ b/.gitlab/script/ghcup_git.sh
@@ -1,52 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup_env"
-
-mkdir -p "$CI_PROJECT_DIR"/.local/bin
-
-CI_PROJECT_DIR=$(pwd)
-
-ecabal() {
-	cabal "$@"
-}
-
-eghcup() {
-	ghcup -v -c -s file://$CI_PROJECT_DIR/data/metadata/ghcup-${JSON_VERSION}.yaml "$@"
-}
-
-git describe --always
-
-### build
-
-ecabal update
-
-ecabal build -w ghc-${GHC_VERSION}
-cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup')" "$CI_PROJECT_DIR"/.local/bin/ghcup
-
-### cleanup
-
-rm -rf "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup
-
-### manual cli based testing
-
-eghcup --numeric-version
-
-eghcup install ghc ${GHC_VERSION}
-eghcup set ghc ${GHC_VERSION}
-eghcup install cabal ${CABAL_VERSION}
-
-cabal --version
-
-eghcup debug-info
-
-eghcup compile ghc -j $(nproc) -g ${GHC_GIT_TAG} -b ${GHC_VERSION} -- --enable-unregisterised
-eghcup set ghc ${GHC_GIT_VERSION}
-
-[ `$(eghcup whereis ghc ${GHC_GIT_VERSION}) --numeric-version` = "${GHC_GIT_VERSION}" ]
-
-# nuke
-eghcup nuke
-[ ! -e "${GHCUP_INSTALL_BASE_PREFIX}/.ghcup" ]
-
--- a/.gitlab/script/ghcup_hls.sh
+++ b/.gitlab/script/ghcup_hls.sh
@@ -1,51 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup_env"
-
-mkdir -p "$CI_PROJECT_DIR"/.local/bin
-
-CI_PROJECT_DIR=$(pwd)
-
-ecabal() {
-	cabal "$@"
-}
-
-eghcup() {
-	ghcup -v -c -s file://$CI_PROJECT_DIR/data/metadata/ghcup-${JSON_VERSION}.yaml "$@"
-}
-
-git describe --always
-
-### build
-
-ecabal update
-
-ecabal build -w ghc-${GHC_VERSION}
-cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup')" "$CI_PROJECT_DIR"/.local/bin/ghcup
-
-### cleanup
-
-rm -rf "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup
-
-### manual cli based testing
-
-eghcup --numeric-version
-
-eghcup install ghc ${GHC_VERSION}
-eghcup set ghc ${GHC_VERSION}
-eghcup install cabal ${CABAL_VERSION}
-
-cabal --version
-
-eghcup debug-info
-
-eghcup compile hls -j $(nproc) -v ${HLS_TARGET_VERSION} --ghc ${GHC_VERSION}
-
-[ `$(eghcup whereis hls ${HLS_TARGET_VERSION}) --numeric-version` = "${HLS_TARGET_VERSION}" ] || [ `$(eghcup whereis hls ${HLS_TARGET_VERSION}) --numeric-version | sed 's/.0$//'` = "${HLS_TARGET_VERSION}" ]
-
-# nuke
-eghcup nuke
-[ ! -e "${GHCUP_INSTALL_BASE_PREFIX}/.ghcup" ]
-
--- a/.gitlab/script/ghcup_release.sh
+++ b/.gitlab/script/ghcup_release.sh
@@ -15,10 +15,14 @@ git describe
 # build
 ecabal update

+(
+	cd /tmp
+	ecabal install -w ghc-${GHC_VERSION} --installdir="$CI_PROJECT_DIR"/.local/bin hspec-discover
+)

 if [ "${OS}" = "LINUX" ] ; then
 	if [ "${ARCH}" = "32" ] ; then
-		ecabal build -w ghc-${GHC_VERSION} --ghc-options='-split-sections -optl-static' -ftui
+		ecabal build -w ghc-${GHC_VERSION} --ghc-options='-split-sections -optl-static' -ftui -ftar
 	elif [ "${ARCH}" = "64" ] ; then
 		ecabal build -w ghc-${GHC_VERSION} --ghc-options='-split-sections -optl-static' -ftui
 	else
--- a/.gitlab/script/ghcup_version.sh
+++ b/.gitlab/script/ghcup_version.sh
@@ -12,55 +12,38 @@ ecabal() {
 	cabal "$@"
 }

-raw_eghcup() {
-	ghcup -v -c "$@"
-}
-
 eghcup() {
 	if [ "${OS}" = "WINDOWS" ] ; then
-		ghcup -v -c -s file:/$CI_PROJECT_DIR/data/metadata/ghcup-${JSON_VERSION}.yaml "$@"
+		ghcup -v -c -s file:/$CI_PROJECT_DIR/ghcup-${JSON_VERSION}.yaml "$@"
 	else
-		ghcup -v -c -s file://$CI_PROJECT_DIR/data/metadata/ghcup-${JSON_VERSION}.yaml "$@"
+		ghcup -v -c -s file://$CI_PROJECT_DIR/ghcup-${JSON_VERSION}.yaml "$@"
 	fi
 }

-if [ "${OS}" = "WINDOWS" ] ; then
-	GHCUP_DIR="${GHCUP_INSTALL_BASE_PREFIX}"/ghcup
-else
-	GHCUP_DIR="${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup
-fi
-
 git describe --always

 ### build

 ecabal update

+(
+	cd /tmp
+	ecabal install -w ghc-${GHC_VERSION} --installdir="$CI_PROJECT_DIR"/.local/bin hspec-discover
+)
+
 if [ "${OS}" = "DARWIN" ] ; then
 	ecabal build -w ghc-${GHC_VERSION} -ftui
 	ecabal test -w ghc-${GHC_VERSION} -ftui ghcup-test
 	ecabal haddock -w ghc-${GHC_VERSION} -ftui
 elif [ "${OS}" = "LINUX" ] ; then
 	if [ "${ARCH}" = "32" ] ; then
-		ecabal build -w ghc-${GHC_VERSION} -finternal-downloader -ftui
-		ecabal test -w ghc-${GHC_VERSION} -finternal-downloader -ftui ghcup-test
-		ecabal haddock -w ghc-${GHC_VERSION} -finternal-downloader -ftui
+		ecabal build -w ghc-${GHC_VERSION} -finternal-downloader -ftui -ftar
+		ecabal test -w ghc-${GHC_VERSION} -finternal-downloader -ftui -ftar ghcup-test
+		ecabal haddock -w ghc-${GHC_VERSION} -finternal-downloader -ftui -ftar
 	else
 		ecabal build -w ghc-${GHC_VERSION} -finternal-downloader -ftui
 		ecabal test -w ghc-${GHC_VERSION} -finternal-downloader -ftui ghcup-test
 		ecabal haddock -w ghc-${GHC_VERSION} -finternal-downloader -ftui
-
-		if [ "${ARCH}" = "64" ] ; then
-			# doctest
-			curl -sL https://downloads.haskell.org/~ghcup/unofficial-bindists/cabal-docspec/cabal-docspec-0.0.0.20210228_p1.tar.bz2 > cabal-docspec.tar.bz2
-			echo '3a10f6fec16dbd18efdd331b1cef5d2d342082da42f5b520726d1fa6a3990d12  cabal-docspec.tar.bz2' | sha256sum -c -
-			tar -xjf cabal-docspec.tar.bz2 cabal-docspec
-			mv cabal-docspec "$CI_PROJECT_DIR"/.local/bin/cabal-docspec
-			rm -f cabal-docspec.tar.bz2
-			chmod a+x "$CI_PROJECT_DIR"/.local/bin/cabal-docspec
-
-			cabal-docspec -XCPP -XTypeSynonymInstances -XOverloadedStrings -XPackageImports --check-properties
-		fi
 	fi
 elif [ "${OS}" = "FREEBSD" ] ; then
 	ecabal build -w ghc-${GHC_VERSION} -finternal-downloader -ftui --constraint="zip +disable-zstd"
@@ -83,48 +66,31 @@ else
 	ext=''
 fi
 	cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup')" "$CI_PROJECT_DIR"/.local/bin/ghcup${ext}
+	cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup-gen')" "$CI_PROJECT_DIR"/.local/bin/ghcup-gen${ext}

 ### cleanup

-rm -rf "${GHCUP_DIR}"
+if [ "${OS}" = "WINDOWS" ] ; then
+	rm -rf "${GHCUP_INSTALL_BASE_PREFIX}"/ghcup
+else
+	rm -rf "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup
+fi

 ### manual cli based testing


+ghcup-gen check -f ghcup-${JSON_VERSION}.yaml
+
 eghcup --numeric-version

-eghcup install ghc ${GHC_VERSION}
-[ `$(eghcup whereis ghc ${GHC_VERSION}) --numeric-version` = "${GHC_VERSION}" ]
-[ `eghcup run --ghc ${GHC_VERSION} -- ghc --numeric-version` = "${GHC_VERSION}" ]
-eghcup set ghc ${GHC_VERSION}
-eghcup install cabal ${CABAL_VERSION}
-[ `$(eghcup whereis cabal ${CABAL_VERSION}) --numeric-version` = "${CABAL_VERSION}" ]
-eghcup unset cabal
-"$GHCUP_BIN"/cabal --version && exit || echo yes
-eghcup set cabal ${CABAL_VERSION}
-[ `$(eghcup whereis cabal ${CABAL_VERSION}) --numeric-version` = "${CABAL_VERSION}" ]
-[ `eghcup run --cabal ${CABAL_VERSION} -- cabal --numeric-version` = "${CABAL_VERSION}" ]
-
-if [ "${OS}" != "FREEBSD" ] ; then
-	if [ "${ARCH}" = "64" ] ; then
-		eghcup run --ghc 8.10.7 --cabal 3.4.1.0 --hls 1.6.1.0 --stack 2.7.3 --install --bindir "$(pwd)/.bin"
-		if [ "${OS}" == "WINDOWS" ] ; then
-			expected=$(cat "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup-run.files.windows" | sort)
-		else
-			expected=$(cat "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup-run.files" | sort)
-		fi
-		actual=$(cd ".bin" && find . | sort)
-		[ "${actual}" = "${expected}" ]
-		unset actual expected
-		rm -rf .bin
-	fi
-fi
+eghcup install ${GHC_VERSION}
+eghcup set ${GHC_VERSION}
+eghcup install-cabal ${CABAL_VERSION}

 cabal --version

 eghcup debug-info

-# also test etags
 eghcup list
 eghcup list -t ghc
 eghcup list -t cabal
@@ -144,67 +110,37 @@ else
 	# test installing new ghc doesn't mess with currently set GHC
 	# https://gitlab.haskell.org/haskell/ghcup-hs/issues/7
 	if [ "${OS}" = "LINUX" ] ; then
-		eghcup --downloader=wget prefetch ghc 8.10.3
-		eghcup --offline install ghc 8.10.3
-		if [ "${ARCH}" = "64" ] ; then
-			expected=$(cat "$( cd "$(dirname "$0")" ; pwd -P )/../ghc-8.10.3-linux.files" | sort)
-			actual=$(cd "${GHCUP_DIR}/ghc/8.10.3/" && find . | sort)
-			[ "${actual}" = "${expected}" ]
-			unset actual expected
-		fi
-	elif [ "${OS}" = "WINDOWS" ] ; then
-		eghcup prefetch ghc 8.10.3
-		eghcup --offline install ghc 8.10.3
-		expected=$(cat "$( cd "$(dirname "$0")" ; pwd -P )/../ghc-8.10.3-windows.files" | sort)
-		actual=$(cd "${GHCUP_DIR}/ghc/8.10.3/" && find . | sort)
-		[ "${actual}" = "${expected}" ]
-		unset actual expected
-	else
-		eghcup prefetch ghc 8.10.3
-		eghcup --offline install ghc 8.10.3
+		eghcup --downloader=wget install 8.10.3
+	else # test wget a bit
+		eghcup install 8.10.3
 	fi
 	[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
-	eghcup --offline set 8.10.3
+	eghcup set 8.10.3
 	eghcup set 8.10.3
 	[ "$(ghc --numeric-version)" = "8.10.3" ]
 	eghcup set ${GHC_VERSION}
 	[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
-	eghcup unset ghc
-    "$GHCUP_BIN"/ghc --numeric-version && exit || echo yes
-	eghcup set ${GHC_VERSION}
-	eghcup --offline rm 8.10.3
+	eghcup rm 8.10.3
 	[ "$(ghc --numeric-version)" = "${ghc_ver}" ]

-
 	if [ "${OS}" = "DARWIN" ] ; then
 		eghcup install hls
-		$(eghcup whereis hls) --version
+		haskell-language-server-wrapper --version

 		eghcup install stack
-		$(eghcup whereis stack) --version
+		stack --version
 	elif [ "${OS}" = "LINUX" ] ; then
 		if [ "${ARCH}" = "64" ] ; then
 			eghcup install hls
 			haskell-language-server-wrapper --version
-			eghcup unset hls
-			"$GHCUP_BIN"/haskell-language-server-wrapper --version && exit || echo yes

 			eghcup install stack
 			stack --version
-			eghcup unset hls
-			"$GHCUP_BIN"/stack --version && exit || echo yes
 		fi
 	fi
 fi


-
-# check that lazy loading works for 'whereis'
-cp "$CI_PROJECT_DIR/data/metadata/ghcup-${JSON_VERSION}.yaml" "$CI_PROJECT_DIR/data/metadata/ghcup-${JSON_VERSION}.yaml.bak"
-echo '**' > "$CI_PROJECT_DIR/data/metadata/ghcup-${JSON_VERSION}.yaml"
-eghcup whereis ghc $(ghc --numeric-version)
-mv -f "$CI_PROJECT_DIR/data/metadata/ghcup-${JSON_VERSION}.yaml.bak" "$CI_PROJECT_DIR/data/metadata/ghcup-${JSON_VERSION}.yaml"
-
 eghcup rm $(ghc --numeric-version)

 # https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/116
@@ -215,60 +151,14 @@ if [ "${OS}" = "LINUX" ] ; then
 	fi
 fi

-sha_sum() {
-	if [ "${OS}" = "FREEBSD" ] ; then
-		sha256 "$@"
-	else
-		sha256sum "$@"
-	fi
-
-}
-
-# test etags
-rm -f "${GHCUP_DIR}/cache/ghcup-${JSON_VERSION}.yaml"
-raw_eghcup -s https://www.haskell.org/ghcup/data/ghcup-${JSON_VERSION}.yaml list
-# snapshot yaml and etags file
-etag=$(cat "${GHCUP_DIR}/cache/ghcup-${JSON_VERSION}.yaml.etags")
-sha=$(sha_sum "${GHCUP_DIR}/cache/ghcup-${JSON_VERSION}.yaml")
-# invalidate access time timer, which is 5minutes, so we re-download
-touch -a -m -t '199901010101' "${GHCUP_DIR}/cache/ghcup-${JSON_VERSION}.yaml"
-# redownload same file with some newlines added
-raw_eghcup -s https://www.haskell.org/ghcup/exp/ghcup-${JSON_VERSION}.yaml list
-# snapshot new yaml and etags file
-etag2=$(cat "${GHCUP_DIR}/cache/ghcup-${JSON_VERSION}.yaml.etags")
-sha2=$(sha_sum "${GHCUP_DIR}/cache/ghcup-${JSON_VERSION}.yaml")
-# compare
-[ "${etag}" != "${etag2}" ]
-[ "${sha}" != "${sha2}" ]
-# invalidate access time timer, which is 5minutes, but don't expect a re-download
-touch -a -m -t '199901010101' "${GHCUP_DIR}/cache/ghcup-${JSON_VERSION}.yaml"
-# this time, we expect the same hash and etag
-raw_eghcup -s https://www.haskell.org/ghcup/exp/ghcup-${JSON_VERSION}.yaml list
-etag3=$(cat "${GHCUP_DIR}/cache/ghcup-${JSON_VERSION}.yaml.etags")
-sha3=$(sha_sum "${GHCUP_DIR}/cache/ghcup-${JSON_VERSION}.yaml")
-[ "${etag2}" = "${etag3}" ]
-[ "${sha2}" = "${sha3}" ]
-
-# test isolated installs
-eghcup install ghc -i "$(pwd)/isolated" 8.10.5
-[ "$(isolated/bin/ghc --numeric-version)" = "8.10.5" ]
-! eghcup install ghc -i "$(pwd)/isolated" 8.10.5
-if [ "${ARCH}" = "64" ] ; then
-	if [ "${OS}" = "LINUX" ] || [ "${OS}" = "WINDOWS" ] ; then
-		eghcup install cabal -i "$(pwd)/isolated" 3.4.0.0
-		[ "$(isolated/cabal --numeric-version)" = "3.4.0.0" ]
-		eghcup install stack -i "$(pwd)/isolated" 2.7.3
-		[ "$(isolated/stack --numeric-version)" = "2.7.3" ]
-		eghcup install hls -i "$(pwd)/isolated" 1.3.0
-		[ "$(isolated/haskell-language-server-wrapper --numeric-version)" = "1.3.0" ] ||
-			[ "$(isolated/haskell-language-server-wrapper --numeric-version)" = "1.3.0.0" ]
-	fi
-fi
-
 eghcup upgrade
 eghcup upgrade -f


 # nuke
 eghcup nuke
-[ ! -e "${GHCUP_DIR}" ]
+if [ "${OS}" = "WINDOWS" ] ; then
+	[ ! -e "${GHCUP_INSTALL_BASE_PREFIX}/ghcup" ]
+else
+	[ ! -e "${GHCUP_INSTALL_BASE_PREFIX}/.ghcup" ]
+fi
--- a/.gitlab/script/hlint.sh
+++ b/.gitlab/script/hlint.sh
@@ -15,5 +15,5 @@ git describe
 ecabal update
 ecabal install -w ghc-${GHC_VERSION} --installdir="$CI_PROJECT_DIR"/.local/bin hlint

-hlint -r app/ lib/ test/ 
+hlint -r lib/ test/ 

--- a/.gitlab/shell.nix
+++ b/.gitlab/shell.nix
@@ -0,0 +1,89 @@
+{ system ? "aarch64-darwin"
+#, nixpkgs ? fetchTarball https://github.com/angerman/nixpkgs/archive/257cb120334.tar.gz #apple-silicon.tar.gz
+, pkgs ? import <nixpkgs> { inherit system; }
+, compiler ? if system == "aarch64-darwin" then "ghc8103Binary" else "ghc8103"
+}: pkgs.mkShell {
+  # this prevents nix from trying to write the env-vars file.
+  # we can't really, as NIX_BUILD_TOP/env-vars is not set.
+  noDumpEnvVars=1;
+
+  # stop polluting LDFLAGS with -liconv
+  dontAddExtraLibs = true;
+
+  # we need to inject ncurses into --with-curses-libraries.
+  # the real fix is to teach terminfo to use libcurses on macOS.
+  # CONFIGURE_ARGS = "--with-intree-gmp --with-curses-libraries=${pkgs.ncurses.out}/lib";
+  CONFIGURE_ARGS = "--with-intree-gmp --with-curses-libraries=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib --with-iconv-includes=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include --with-iconv-libraries=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib SH=/bin/bash";
+
+  # magic speedup pony :facepalm:
+  #
+  # nix has the ugly habbit of duplicating ld flags more than necessary.  This
+  # somewhat consolidates this.
+  shellHook = ''
+  export NIX_LDFLAGS=$(for a in $NIX_LDFLAGS; do echo $a; done |sort|uniq|xargs)
+  export NIX_LDFLAGS_FOR_TARGET=$(for a in $NIX_LDFLAGS_FOR_TARGET; do echo $a; done |sort|uniq|xargs)
+  export NIX_LDFLAGS_FOR_TARGET=$(comm -3 <(for l in $NIX_LDFLAGS_FOR_TARGET; do echo $l; done) <(for l in $NIX_LDFLAGS; do echo $l; done))
+
+
+  # Impurity hack for GHC releases.
+  #################################
+  # We don't want binary releases to depend on nix, thus we'll need to make sure we don't leak in references.
+  # GHC externally depends only on iconv and curses.  However we can't force a specific curses library for
+  # the terminfo package, as such we'll need to make sure we only look in the system path for the curses library
+  # and not pick up the tinfo from the nix provided ncurses package.
+  #
+  # We also need to force us to use the systems COREFOUNDATION, not the one that nix builds. Again this is impure,
+  # but it will allow us to have proper binary distributions.
+  #
+  # do not use nixpkgs provided core foundation
+  export NIX_COREFOUNDATION_RPATH=/System/Library/Frameworks
+  # drop curses from the LDFLAGS, we really want the system ones, not the nix ones.
+  export NIX_LDFLAGS=$(for lib in $NIX_LDFLAGS; do case "$lib" in *curses*);; *) echo -n "$lib ";; esac; done;)
+  export NIX_CFLAGS_COMPILE+=" -Wno-nullability-completeness -Wno-availability -Wno-expansion-to-defined -Wno-builtin-requires-header -Wno-unused-command-line-argument"
+
+  # unconditionally add the MacOSX.sdk and TargetConditional.h
+  export NIX_CFLAGS_COMPILE+=" -isystem /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include"
+
+  '';
+
+  nativeBuildInputs = (with pkgs; [
+    # This needs to come *before* ghc,
+    # otherwise we migth end up with the clang from
+    # the bootstrap GHC in PATH with higher priority.
+    clang_11
+    llvm_11
+
+    haskell.compiler.${compiler}
+    haskell.packages.${compiler}.cabal-install
+    haskell.packages.${compiler}.alex
+    haskell.packages.${compiler}.happy # _1_19_12 is needed for older GHCs.
+
+    automake
+    autoconf
+    m4
+
+    gmp
+    zlib.out
+    zlib.dev
+    glibcLocales
+    # locale doesn't build yet :-/
+    # locale
+
+    git
+
+    python3
+    # python3Full
+    # python3Packages.sphinx
+    perl
+
+    which
+    wget
+	curl
+    file
+
+    xz
+    xlibs.lndir
+
+    cacert ])
+  ++ (with pkgs.darwin.apple_sdk.frameworks; [ Foundation Security ]);
+}
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +0,0 @@
-[submodule "data/metadata"]
-	path = data/metadata
-	url = https://github.com/haskell/ghcup-metadata.git
-	branch = master
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,10 @@
 jobs:
  include:
+    - os: osx
+      osx_image: xcode8
+      language: generic
+      env: ARTIFACT=x86_64-apple-darwin-10.11-ghcup
+
    - os: osx
      osx_image: xcode10.1
      language: generic
@@ -10,16 +15,23 @@ jobs:
      language: generic
      env: ARTIFACT=x86_64-apple-darwin-10.14-ghcup

+  allow_failures:
+    - os: osx
+      osx_image: xcode8
+      language: generic
+      env: ARTIFACT=x86_64-apple-darwin-10.11-ghcup
+

 script: ".travis/build.sh"

 deploy:
  provider: releases
  api_key:
-    secure: "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"
+    secure: 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
  file: $ARTIFACT
  on:
-    repo: hasufell/ghcup-hs
+    repo: haskell/ghcup-hs
    tags: true
  skip_cleanup: true
  draft: true
+
--- a/.travis/build.sh
+++ b/.travis/build.sh
@@ -18,8 +18,8 @@ ghcup set 8.10.4
 cabal update

 (
-       cd /tmp
-       cabal install --installdir="$HOME"/.ghcup/bin hspec-discover
+	cd /tmp
+	cabal install --installdir="$HOME"/.ghcup/bin hspec-discover
 )

 cabal build --constraint="zlib +static" --constraint="lzma +static" -ftui
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,107 +1,8 @@
 # Revision history for ghcup

-## 0.1.17.7 -- 2022-04-21
-
-* Fix `ghcup run` on windows wrt [#345](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/345)
-
-## 0.1.17.6 -- 2022-03-18
-
-* Vastly improve shell completions wrt [#242](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/242)
-* Fix 'ghcup install cabal/hls/stack --set' wrt [#324](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/324)
-* Fix bad error message wrt [#323](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/323)
-* Use predictable /tmp names for `ghcup run`, fixes [#329](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/329)
-* Fix bug with isolated installation of not previously installed versions
-* Add `--no-set` to install commands, fixes [#330](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/330)
-* Fix serious bug in `ghcup list --raw-format -t <tool> -c installed`
-* Overhaul metadata merging and add `ghcup config add-release-channel URI` wrt [#328](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/328)
-* Fix max path issues on windows with `ghcup run`
-
-## 0.1.17.5 -- 2022-02-26
-
-* Implement `ghcup run` subcommand wrt [#137](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/137)
-* Support installation of dynamic HLS bindists wrt [HLS #2675](https://github.com/haskell/haskell-language-server/pull/2675) and [#237](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/237)
-* Fix XDG support when `~/.local/bin` is a symlink wrt [#311](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/311)
-* Add support for quilt-style patches wrt [#230](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/230), by James Hobson
-* Fix redundant upgrade warnings in `ghcup upgrade`
-* Fix `ghcup whereis ghc` for non-standard versions wrt [#289](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/289)
-* Don't print logs to stdout, but stderr
-* Allow unpacking legacy lzma archives wrt [#307](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/307)
-* Allow to disable self-upgrade functionality wrt [#305](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/305)
-* Fix `ghcup install ghc --set` when ghc is already installed wrt [#291](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/291)
-
-## 0.1.17.4 -- 2021-11-13
-
-* add `--metadata-caching` option, allowing to also disable yaml metadata caching wrt [#278](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/278)
-* make upgrading ghcup in TUI more pleasant wrt [#276](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/276)
-* fix parsing of atypical GHC versions (e.g. `8.10.5-patch1`)
-* fix compiling HLS dynamically linked, also see [#245](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/245)
-* redo (and break) some of the `ghcup compile <tool>` interface, improving patch options and setting custom cabal.project files
-* avoid redundant update warnings wrt [#283](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/283)
-
-## 0.1.17.3 -- 2021-10-27
-
-* clean up during unpack failures as well
-* migrate te aeson-2.0.1.0
-* switch to yaml-streamly to fix performance regression wrt [#270](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/270)
-* use [github.com/haskell/ghcup-metadata](https://github.com/haskell/ghcup-metadata) for metadata file download (better caching)
-
-## 0.1.17.2 -- 2021-09-30
-
-* Honour GHC bootstrap compiler during git clone stages wrt [#250](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/250)
-* Speed up `unset` command
-* Fix `--overwrite-version` for `ghcup compile ghc` wrt [#253](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/253)
-* Apply patches before bootstrap
-
-## 0.1.17.1 -- 2021-09-26
-
-* Fix `NO_COLOR`
-* Fix `ghcup list -t` for hls/stack, wrt [#244](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/244)
-* Get rid of concurrent-output
-* Improve cli interface with partial versions (e.g. `ghcup install ghc 8`)
-* Fix HLS compilation builds
-* Implement `ghcup gc` (garbage collection) command
-
-## 0.1.17 -- 2021-09-20
-
-* Add `--force` option to install/compile wrt [#210](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/210) by Arjun Kathuria
-* Implement compiling HLS from source wrt [#201](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/201)
-* Implement experimental GPG verification of the metadata file (see README) wrt [#263](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/236)
-* Add `ghcup unset` command wrt [#145](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/145)
-* Add `ghcup whereis bindir` etc wrt [#221](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/221)
-* Greatly reduce dependency footprint wrt [#212](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/212)
-* Add `ghcup --plan-json`
-* Improve `--patchdir` option for GHC compilation wrt [#226](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/226)
-* Try to improve logging and failure modes, especially during downloads
-* Add descriptive warnings when HLS and GHC versions are incompatible
-* Improve curl header parsing wrt [#213](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/213)
-
-## 0.1.16.2 -- 2021-08-12
-
-* Add isolated installations wrt [#141](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/141) by Arjun Kathuria
-* Implement config cli MVP wrt [#134](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/134) by Oleksii Dorozhkin
-* Fix `ghcup compile ghc --flavor`
-* Fix minor installation bug causing increased disk space wrt [#139](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/139)
-* Improved error handling wrt [#136](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/136)
-* Various improvements to metadata download when using `file://` and `--offline` wrt [#137](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/137)
-
-## 0.1.16.1 -- 2021-07-29
+## 0.1.16 -- ????-??-??

 * Add 'nuke' subcommand wrt [#135](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/135), implemented by Arjun Kathuria
-* Add uninstallation powershell script on windows wrt [#150](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/150)
-* Improve logging
-* Fix building GHC cross compiler wrt [#180](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/180)
-* Allow to use hadrian as build system (for git based versions only) wrt [#35](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/35)
-* Allow passing `--flavor` to `ghcup compile ghc`
-* Support new GHC `bin/` directory format wrt [ghc/ghc#20074](https://gitlab.haskell.org/ghc/ghc/-/issues/20074#note_363720)
-* Implement `whereis` subcommand wrt [#173](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/173)
-* Add `--offline` switch and `prefetch` subcommand wrt [#186](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/186)
-* Implement ETAGs hashing for metadata downloads to speed up `ghcup list` wrt [#193](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/193)
-* Avoid unnecessary fetching of ghcup metadata in some commands
-* Avoid unnecessary update checks for some commands
-* Preserve mtimes on unpacked GHC tarballs on windows wrt [#187](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/187), fixing issues with `ghc-pkg`
-* Fix lesser bug in `ghcup list` for stray stack versions wrt [#183](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/183)
-* Major redo on how file removal on windows works, avoiding partial removals etc, wrt [#165](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/165)
-* Improve ghcup tui for screen readers wrt [github/#4](https://github.com/haskell/ghcup-hs/pull/4), thanks to Mario Lang

 ## 0.1.15.2 -- 2021-06-13

--- a/HACKING.md
+++ b/HACKING.md
@@ -0,0 +1,75 @@
+# HACKING
+
+## Design decisions
+
+### Using [Excepts](https://hackage.haskell.org/package/haskus-utils-variant-3.0/docs/Haskus-Utils-Variant-Excepts.html) as a beefed up ExceptT
+
+This is an open variant, similar to [plucky](https://hackage.haskell.org/package/plucky) or [oops](https://github.com/i-am-tom/oops) and allows us to combine different error types. Maybe it is too much and it's a little bit [unergonomic](https://github.com/haskus/packages/issues/32) at times. If it really hurts maintenance, it will be removed. It was more of an experiment.
+
+### No use of haskell-TLS
+
+I consider haskell-TLS an interesting experiment, but not a battle-tested and peer-reviewed crypto implementation. There is little to no research about what the intricacies of using haskell for low-level crypto are and how vulnerable such binaries are. Instead, we use either curl the binary (for FreeBSD and mac) or http-io-streams, which works with OpenSSL bindings.
+
+### Optics instead of lens
+
+They're a little safer (less Monoid weirdness with view) and have better error messages. Consider the following wit lens
+
+```
+> view (_Just . to (++ "abc")) Nothing
+""
+```
+
+vs optics
+
+```
+> view (_Just % to (++ "abc")) Nothing
+
+<interactive>:2:1: error:
+    • An_AffineFold cannot be used as A_Getter
+    • In the expression: view (_Just % to (++ "abc")) Nothing
+      In an equation for ‘it’: it = view (_Just % to (++ "abc")) Nothing
+```
+
+### Strict and StrictData on by default
+
+Kazu Yamamoto [explained it in his PR](https://github.com/yesodweb/wai/pull/752#issuecomment-501531386) very well. I like to agree with him. The instances where we need non-strict behavior, we annotate it.
+
+## Code style and formatting
+
+1. Brittany
+2. mtl-style preferred
+3. no overly pointfree style
+
+## Code structure
+
+Main functionality is in `GHCup` module. Utility functions are
+organised tree-ish in `GHCup.Utils` and `GHCup.Utils.*`.
+
+Anything dealing with ghcup specific directories is in
+`GHCup.Utils.Dirs`.
+
+Download information on where to fetch bindists from is in the appropriate
+yaml files: `ghcup-<yaml-ver>.yaml`.
+
+## Common Tasks
+
+### Adding a new GHC version
+
+1. open the latest `ghcup-<yaml-ver>.yaml`
+2. find the latest ghc version (in yaml tree e.g. `ghcupDownloads -> GHC -> 8.10.3`)
+3. copy-paste it
+4. adjust the version, tags, changelog, source url
+5. adjust the various bindist urls (make sure to also change the yaml anchors)
+6. run `cabal run exe:ghcup-gen -- check-tarballs -f ghcup-<yaml-ver>.yaml -u 'ghc-8\.10\.4'`
+
+## Major refactors
+
+1. First major refactor included adding cross support. This added
+   `GHCTargetVersion`, which includes the target in addition to the version.
+   Most of the `Version` parameters to functions had to be replaced with
+   that and ensured the logic is consistent for cross and non-cross
+   installs.
+2. This refactor added windows support wrt [#130](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/130).
+   The major changes here were switching `hpath` library out for `filepath`/`directory` (sadly) and
+   introducing a non-unix way of handling processes via the `process` library. It also introduced considerable
+   amounts of CPP wrt file handling, installation etc.
--- a/README.md
+++ b/README.md
@@ -1,13 +1,245 @@
-## The GHCup Haskell installer
+`ghcup` makes it easy to install specific versions of `ghc` on GNU/Linux,
+macOS (aka Darwin), FreeBSD and Windows and can also bootstrap a fresh Haskell developer environment from scratch.
+It follows the unix UNIX philosophy of [do one thing and do it well](https://en.wikipedia.org/wiki/Unix_philosophy#Do_One_Thing_and_Do_It_Well).

-[![Join the chat at Libera.chat](https://img.shields.io/badge/chat-on%20libera%20IRC-brightgreen.svg)](https://kiwiirc.com/nextclient/irc.libera.chat/?nick=Guest%7C?#haskell,#haskell-ghcup)
-[![Join the chat at Matrix.org](https://img.shields.io/matrix/haskell-tooling:matrix.org?label=chat%20on%20matrix.org)](https://app.element.io/#/room/#haskell-tooling:matrix.org)
-[![Join the chat at Discord](https://img.shields.io/discord/280033776820813825?label=chat%20on%20discord)](https://discord.gg/pKYf3zDQU7)
-[![Join the chat at https://gitter.im/haskell/ghcup](https://badges.gitter.im/haskell/ghcup.svg)](https://gitter.im/haskell/ghcup?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-<a href="https://opencollective.com/ghcup#category-CONTRIBUTE"><img src="https://opencollective.com/webpack/donate/button@2x.png?color=blue" alt="Donate" width="150"></a>
+Similar in scope to [rustup](https://github.com/rust-lang-nursery/rustup.rs), [pyenv](https://github.com/pyenv/pyenv) and [jenv](http://www.jenv.be).

-GHCup is an installer for the general purpose language [Haskell](https://www.haskell.org/).
+## Table of Contents

-Visit the [documentation](https://www.haskell.org/ghcup/) for installation instructions.
+   * [Installation](#installation)
+     * [Simple bootstrap](#simple-bootstrap)
+     * [Manual install](#manual-install)
+     * [Vim integration](#vim-integration)
+   * [Usage](#usage)
+     * [Configuration](#configuration)
+     * [Manpages](#manpages)
+     * [Shell-completion](#shell-completion)
+     * [Cross support](#cross-support)
+     * [XDG support](#xdg-support)
+     * [Env variables](#env-variables)
+     * [Installing custom bindists](#installing-custom-bindists)
+   * [Design goals](#design-goals)
+   * [How](#how)
+   * [Known users](#known-users)
+   * [Known problems](#known-problems)
+   * [FAQ](#faq)

-If you're looking for the metadata YAML files, see here: [https://github.com/haskell/ghcup-metadata](https://github.com/haskell/ghcup-metadata)
+## Installation
+
+### Simple bootstrap
+
+Follow the instructions at [https://www.haskell.org/ghcup/](https://www.haskell.org/ghcup/)
+
+### Manual install
+
+Download the binary for your platform at [https://downloads.haskell.org/~ghcup/](https://downloads.haskell.org/~ghcup/)
+and place it into your `PATH` anywhere.
+
+Then adjust your `PATH` in `~/.bashrc` (or similar, depending on your shell) like so:
+
+```sh
+export PATH="$HOME/.cabal/bin:$HOME/.ghcup/bin:$PATH"
+```
+
+### Vim integration
+
+See [ghcup.vim](https://github.com/hasufell/ghcup.vim).
+
+## Usage
+
+See `ghcup --help`.
+
+For the simple interactive TUI, run:
+
+```sh
+ghcup tui
+```
+
+For the full functionality via cli:
+
+```sh
+# list available ghc/cabal versions
+ghcup list
+
+# install the recommended GHC version
+ghcup install ghc
+
+# install a specific GHC version
+ghcup install ghc 8.2.2
+
+# set the currently "active" GHC version
+ghcup set ghc 8.4.4
+
+# install cabal-install
+ghcup install cabal
+
+# update ghcup itself
+ghcup upgrade
+```
+
+GHCup works very well with [`cabal-install`](https://hackage.haskell.org/package/cabal-install), which
+handles your haskell packages and can demand that [a specific version](https://cabal.readthedocs.io/en/latest/nix-local-build.html#cfg-flag---with-compiler)  of `ghc` is available, which `ghcup` can do.
+
+### Configuration
+
+A configuration file can be put in `~/.ghcup/config.yaml`. The default config file
+explaining all possible configurations can be found in this repo: [config.yaml](./config.yaml).
+
+Partial configuration is fine. Command line options always override the config file settings.
+
+### Manpages
+
+For man pages to work you need [man-db](http://man-db.nongnu.org/) as your `man` provider, then issue `man ghc`. Manpages only work for the currently set ghc.
+`MANPATH` may be required to be unset.
+
+### Shell-completion
+
+Shell completions are in `shell-completions`.
+
+For bash: install `shell-completions/bash`
+as e.g. `/etc/bash_completion.d/ghcup` (depending on distro)
+and make sure your bashrc sources the startup script
+(`/usr/share/bash-completion/bash_completion` on some distros).
+
+### Cross support
+
+ghcup can compile and install a cross GHC for any target. However, this
+requires that the build host has a complete cross toolchain and various
+libraries installed for the target platform.
+
+Consult the GHC documentation on the [prerequisites](https://gitlab.haskell.org/ghc/ghc/-/wikis/building/cross-compiling#tools-to-install).
+For distributions with non-standard locations of cross toolchain and
+libraries, this may need some tweaking of `build.mk` or configure args.
+See `ghcup compile ghc --help` for further information.
+
+### XDG support
+
+To enable XDG style directories, set the environment variable `GHCUP_USE_XDG_DIRS` to anything.
+
+Then you can control the locations via XDG environment variables as such:
+
+* `XDG_DATA_HOME`: GHCs will be unpacked in `ghcup/ghc` subdir (default: `~/.local/share`)
+* `XDG_CACHE_HOME`: logs and download files will be stored in `ghcup` subdir (default: `~/.cache`)
+* `XDG_BIN_HOME`: binaries end up here (default: `~/.local/bin`)
+* `XDG_CONFIG_HOME`: the config file is stored in `ghcup` subdir as `config.yaml` (default: `~/.config`)
+
+**Note that `ghcup` makes some assumptions about structure of files in `XDG_BIN_HOME`. So if you have other tools
+installing e.g. stack/cabal/ghc into it, this will likely clash. In that case consider disabling XDG support.**
+
+### Env variables
+
+This is the complete list of env variables that change GHCup behavior:
+
+* `GHCUP_USE_XDG_DIRS`: see [XDG support](#xdg-support) above
+* `TMPDIR`: where ghcup does the work (unpacking, building, ...)
+* `GHCUP_INSTALL_BASE_PREFIX`: the base of ghcup (default: `$HOME`)
+* `GHCUP_CURL_OPTS`: additional options that can be passed to curl
+* `GHCUP_WGET_OPTS`: additional options that can be passed to wget
+* `GHCUP_SKIP_UPDATE_CHECK`: Skip the (possibly annoying) update check when you run a command
+* `CC`/`LD` etc.: full environment is passed to the build system when compiling GHC via GHCup
+
+### Installing custom bindists
+
+There are a couple of good use cases to install custom bindists:
+
+1. manually built bindists (e.g. with patches)
+  - example: `ghcup install ghc -u 'file:///home/mearwald/tmp/ghc-eff-patches/ghc-8.10.2-x86_64-deb10-linux.tar.xz' 8.10.2-eff`
+2. GHC head CI bindists
+  - example: `ghcup install ghc -u 'https://gitlab.haskell.org/api/v4/projects/1/jobs/artifacts/master/raw/ghc-x86_64-fedora27-linux.tar.xz?job=validate-x86_64-linux-fedora27' head`
+3. DWARF bindists
+  - example: `ghcup install ghc -u 'https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-deb10-linux-dwarf.tar.xz' 8.10.2-dwarf`
+
+Since the version parser is pretty lax, `8.10.2-eff` and `head` are both valid versions
+and produce the binaries `ghc-8.10.2-eff` and `ghc-head` respectively.
+GHCup always needs to know which version the bindist corresponds to (this is not automatically
+detected).
+
+## Design goals
+
+1. simplicity
+2. non-interactive
+3. portable (eh)
+4. do one thing and do it well (UNIX philosophy)
+
+### Non-goals
+
+1. invoking `sudo`, `apt-get` or *any* package manager
+2. handling system packages
+3. handling cabal projects
+4. being a stack alternative
+
+## How
+
+Installs a specified GHC version into `~/.ghcup/ghc/<ver>`, and places `ghc-<ver>` symlinks in `~/.ghcup/bin/`.
+
+Optionally, an unversioned `ghc` link can point to a default version of your choice.
+
+This uses precompiled GHC binaries that have been compiled on fedora/debian by [upstream GHC](https://www.haskell.org/ghc/download_ghc_8_6_1.html#binaries).
+
+Alternatively, you can also tell it to compile from source (note that this might fail due to missing requirements).
+
+In addition this script can also install `cabal-install`.
+
+## Known users
+
+* Github action [haskell/actions/setup](https://github.com/haskell/actions/tree/main/setup)
+* [vabal](https://github.com/Franciman/vabal)
+
+## Known problems
+
+### Custom ghc version names
+
+When installing ghc bindists with custom version names as outlined in
+[installing custom bindists](#installing-custom-bindists), then cabal might
+be unable to find the correct `ghc-pkg` (also see [#73](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/73))
+if you use `cabal build --with-compiler=ghc-foo`. Instead, point it to the full path, such as:
+`cabal build --with-compiler=$HOME/.ghcup/ghc/<version-name>/bin/ghc` or set that GHC version
+as the current one via: `ghcup set ghc <version-name>`.
+
+This problem doesn't exist for regularly installed GHC versions.
+
+### Limited distributions supported
+
+Currently only GNU/Linux distributions compatible with the [upstream GHC](https://www.haskell.org/ghc/download_ghc_8_6_1.html#binaries) binaries are supported.
+
+### Precompiled binaries
+
+Since this uses precompiled binaries you may run into
+several problems.
+
+#### Missing libtinfo (ncurses)
+
+You may run into problems with *ncurses* and **missing libtinfo**, in case
+your distribution doesn't use the legacy way of building
+ncurses and has no compatibility symlinks in place.
+
+Ask your distributor on how to solve this or
+try to compile from source via `ghcup compile <version>`.
+
+#### Libnuma required
+
+This was a [bug](https://ghc.haskell.org/trac/ghc/ticket/15688) in the build system of some GHC versions that lead to
+unconditionally enabled libnuma support. To mitigate this you might have to install the libnuma
+package of your distribution. See [here](https://gitlab.haskell.org/haskell/ghcup/issues/58) for a discussion.
+
+### Compilation
+
+Although this script can compile GHC for you, it's just a very thin
+wrapper around the build system. It makes no effort in trying
+to figure out whether you have the correct toolchain and
+the correct dependencies. Refer to [the official docs](https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Linux)
+on how to prepare your environment for building GHC.
+
+## FAQ
+
+1. Why reimplement stack?
+
+ghcup is not a reimplementation of stack. The only common part is automatic installation of GHC, but even that differs in scope and design.
+
+2. Why not support windows?
+
+We do.
+
+3. Why the haskell reimplementation?
+
+:-)
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -0,0 +1,19 @@
+# RELEASING
+
+1. update `GHCup.Version` module. `ghcupURL` must only be updated if we change the `_toolRequirements` type or the YAML representation of it. The version of the YAML represents the change increments. `ghcUpVer` is the current application version.
+
+2. Update version in ghcup.cabal
+
+3. Add ChangeLog entry
+
+4. Add/fix downloads in `ghcup-<ver>.yaml`, then verify with `ghcup-gen check -f ghcup-<ver>.yaml`
+
+5. Commit and git push with tag. Wait for tests to succeed and release artifacts to build.
+
+6. Download release artifacts and upload them `downloads.haskell.org/ghcup`
+
+7. Add release artifacts to yaml file (see point 4.)
+
+8. Upload the final `ghcup-<ver>.yaml` to `webhost.haskell.org/ghcup/data/`.
+
+9. Update bootstrap-haskell and symlinks on `downloads.haskell.org/ghcup`
--- a/docs/TODO.md
+++ b/docs/TODO.md
--- a/app/ghcup-gen/Main.hs
+++ b/app/ghcup-gen/Main.hs
@@ -0,0 +1,127 @@
+{-# LANGUAGE CPP               #-}
+{-# LANGUAGE DataKinds         #-}
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE NamedFieldPuns    #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes       #-}
+{-# LANGUAGE TemplateHaskell   #-}
+{-# LANGUAGE TypeApplications  #-}
+
+
+module Main where
+
+import           GHCup.Types
+import           GHCup.Types.JSON               ( )
+import           GHCup.Utils.Logger
+
+import           Data.Char                      ( toLower )
+#if !MIN_VERSION_base(4,13,0)
+import           Data.Semigroup                 ( (<>) )
+#endif
+import           Options.Applicative     hiding ( style )
+import           System.Console.Pretty
+import           System.Exit
+import           System.IO                      ( stdout )
+import           Text.Regex.Posix
+import           Validate
+
+import qualified Data.ByteString               as B
+import qualified Data.Yaml                     as Y
+
+
+data Options = Options
+  { optCommand :: Command
+  }
+
+data Command = ValidateYAML ValidateYAMLOpts
+             | ValidateTarballs ValidateYAMLOpts TarballFilter
+
+
+data Input
+  = FileInput FilePath -- optsparse-applicative doesn't handle ByteString correctly anyway
+  | StdInput
+
+fileInput :: Parser Input
+fileInput =
+  FileInput
+    <$> strOption
+          (long "file" <> short 'f' <> metavar "FILENAME" <> help
+            "Input file to validate"
+          )
+
+stdInput :: Parser Input
+stdInput = flag'
+  StdInput
+  (short 'i' <> long "stdin" <> help "Validate from stdin (default)")
+
+inputP :: Parser Input
+inputP = fileInput <|> stdInput
+
+data ValidateYAMLOpts = ValidateYAMLOpts
+  { vInput :: Maybe Input
+  }
+
+validateYAMLOpts :: Parser ValidateYAMLOpts
+validateYAMLOpts = ValidateYAMLOpts <$> optional inputP
+
+tarballFilterP :: Parser TarballFilter
+tarballFilterP = option readm $
+  long "tarball-filter" <> short 'u' <> metavar "<tool>-<version>" <> value def
+    <> help "Only check certain tarballs (format: <tool>-<version>)"
+  where
+    def = TarballFilter (Right Nothing) (makeRegex ("" :: String))
+    readm = do
+      s <- str
+      case span (/= '-') s of
+        (_, []) -> fail "invalid format, missing '-' after the tool name"
+        (t, v) | [tool] <- [ tool | tool <- [minBound..maxBound], low (show tool) == low t ] ->
+          pure (TarballFilter $ Right $ Just tool) <*> makeRegexOptsM compIgnoreCase execBlank (drop 1 v)
+        (t, v) | [tool] <- [ tool | tool <- [minBound..maxBound], low (show tool) == low t ] ->
+          pure (TarballFilter $ Left tool) <*> makeRegexOptsM compIgnoreCase execBlank (drop 1 v)
+        _ -> fail "invalid tool"
+    low = fmap toLower
+
+
+opts :: Parser Options
+opts = Options <$> com
+
+com :: Parser Command
+com = subparser
+  (  command
+       "check"
+       (   ValidateYAML
+       <$> info (validateYAMLOpts <**> helper)
+                (progDesc "Validate the YAML")
+       )
+  <> command
+       "check-tarballs"
+       (info
+         ((ValidateTarballs <$> validateYAMLOpts <*> tarballFilterP) <**> helper)
+         (progDesc "Validate all tarballs (download and checksum)")
+       )
+  )
+
+
+
+main :: IO ()
+main = do
+  _ <- customExecParser (prefs showHelpOnError) (info (opts <**> helper) idm)
+    >>= \Options {..} -> case optCommand of
+          ValidateYAML vopts -> withValidateYamlOpts vopts validate
+          ValidateTarballs vopts tarballFilter -> withValidateYamlOpts vopts (validateTarballs tarballFilter)
+  pure ()
+
+ where
+  withValidateYamlOpts vopts f = case vopts of
+    ValidateYAMLOpts { vInput = Nothing } ->
+      B.getContents >>= valAndExit f
+    ValidateYAMLOpts { vInput = Just StdInput } ->
+      B.getContents >>= valAndExit f
+    ValidateYAMLOpts { vInput = Just (FileInput file) } ->
+      B.readFile file >>= valAndExit f
+  valAndExit f contents = do
+    (GHCupInfo _ av gt) <- case Y.decodeEither' contents of
+      Right r -> pure r
+      Left  e -> die (color Red $ show e)
+    myLoggerT (LoggerConfig True (B.hPut stdout) (\_ -> pure ())) (f av gt)
+      >>= exitWith
--- a/app/ghcup-gen/Validate.hs
+++ b/app/ghcup-gen/Validate.hs
@@ -0,0 +1,297 @@
+{-# LANGUAGE CPP              #-}
+{-# LANGUAGE DataKinds        #-}
+{-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE QuasiQuotes      #-}
+{-# LANGUAGE TemplateHaskell  #-}
+{-# LANGUAGE TypeApplications #-}
+{-# LANGUAGE ViewPatterns     #-}
+
+module Validate where
+
+import           GHCup
+import           GHCup.Download
+import           GHCup.Errors
+import           GHCup.Platform
+import           GHCup.Types
+import           GHCup.Types.Optics
+import           GHCup.Utils
+import           GHCup.Utils.Logger
+import           GHCup.Utils.Version.QQ
+
+#if defined(TAR)
+import qualified Codec.Archive.Tar             as Tar
+#else
+import           Codec.Archive
+#endif
+import           Control.Applicative
+import           Control.Exception.Safe
+import           Control.Monad
+import           Control.Monad.IO.Class
+import           Control.Monad.Logger
+import           Control.Monad.Reader.Class
+import           Control.Monad.Trans.Class      ( lift )
+import           Control.Monad.Trans.Reader     ( runReaderT )
+import           Control.Monad.Trans.Resource   ( runResourceT
+                                                , MonadUnliftIO
+                                                )
+import           Data.Containers.ListUtils      ( nubOrd )
+import           Data.IORef
+import           Data.List
+import           Data.String.Interpolate
+import           Data.Versions
+import           Haskus.Utils.Variant.Excepts
+import           Optics
+import           System.FilePath
+import           System.Exit
+import           System.IO
+import           Text.ParserCombinators.ReadP
+import           Text.PrettyPrint.HughesPJClass ( prettyShow )
+import           Text.Regex.Posix
+
+import qualified Data.ByteString               as B
+import qualified Data.Map.Strict               as M
+import qualified Data.Text                     as T
+import qualified Data.Version                  as V
+
+
+data ValidationError = InternalError String
+  deriving Show
+
+instance Exception ValidationError
+
+
+addError :: (MonadReader (IORef Int) m, MonadIO m, Monad m) => m ()
+addError = do
+  ref <- ask
+  liftIO $ modifyIORef ref (+ 1)
+
+
+validate :: (Monad m, MonadLogger m, MonadThrow m, MonadIO m, MonadUnliftIO m)
+         => GHCupDownloads
+         -> M.Map GlobalTool DownloadInfo
+         -> m ExitCode
+validate dls _ = do
+  ref <- liftIO $ newIORef 0
+
+  -- verify binary downloads --
+  flip runReaderT ref $ do
+    -- unique tags
+    forM_ (M.toList dls) $ \(t, _) -> checkUniqueTags t
+
+    -- required platforms
+    forM_ (M.toList dls) $ \(t, versions) ->
+      forM_ (M.toList versions) $ \(v, vi) ->
+        forM_ (M.toList $ _viArch vi) $ \(arch, pspecs) -> do
+          checkHasRequiredPlatforms t v (_viTags vi) arch (M.keys pspecs)
+
+    checkGHCVerIsValid
+    forM_ (M.toList dls) $ \(t, _) -> checkMandatoryTags t
+    _ <- checkGHCHasBaseVersion
+
+    -- exit
+    e <- liftIO $ readIORef ref
+    if e > 0
+      then pure $ ExitFailure e
+      else do
+        lift $ $(logInfo) [i|All good|]
+        pure ExitSuccess
+ where
+  checkHasRequiredPlatforms t v tags arch pspecs = do
+    let v' = prettyVer v
+        arch' = prettyShow arch
+    when (notElem (Linux UnknownLinux) pspecs) $ do
+      lift $ $(logError)
+        [i|Linux UnknownLinux missing for for #{t} #{v'} #{arch'}|]
+      addError
+    when ((notElem Darwin pspecs) && arch == A_64) $ do
+      lift $ $(logError) [i|Darwin missing for #{t} #{v'} #{arch'}|]
+      addError
+    when ((notElem FreeBSD pspecs) && arch == A_64) $ lift $ $(logWarn)
+      [i|FreeBSD missing for #{t} #{v'} #{arch'}|]
+    when (notElem Windows pspecs && arch == A_64) $ do
+      lift $ $(logError)
+        [i|Windows missing for for #{t} #{v'} #{arch'}|]
+      addError
+
+    -- alpine needs to be set explicitly, because
+    -- we cannot assume that "Linux UnknownLinux" runs on Alpine
+    -- (although it could be static)
+    when (notElem (Linux Alpine) pspecs) $
+      case t of
+        GHCup | arch `elem` [A_64, A_32] -> lift ($(logError) [i|Linux Alpine missing for #{t} #{v'} #{arch}|]) >> addError
+        Cabal | v > [vver|2.4.1.0|]
+              , arch `elem` [A_64, A_32] -> lift ($(logError) [i|Linux Alpine missing for #{t} #{v'} #{arch'}|]) >> addError
+        GHC | Latest `elem` tags || Recommended `elem` tags
+            , arch `elem` [A_64, A_32] -> lift ($(logError) [i|Linux Alpine missing for #{t} #{v'} #{arch'}|])
+        _ -> lift $ $(logWarn) [i|Linux Alpine missing for #{t} #{v'} #{arch'}|]
+
+  checkUniqueTags tool = do
+    let allTags = join $ M.elems $ availableToolVersions dls tool
+    let nonUnique =
+          fmap fst
+            .   filter (\(_, b) -> not b)
+            <$> ( mapM
+                    (\case
+                      [] -> throwM $ InternalError "empty inner list"
+                      (t : ts) ->
+                        pure $ (t, ) (not (isUniqueTag t) || null ts)
+                    )
+                . group
+                . sort
+                $ allTags
+                )
+    case join nonUnique of
+      [] -> pure ()
+      xs -> do
+        lift $ $(logError) [i|Tags not unique for #{tool}: #{xs}|]
+        addError
+   where
+    isUniqueTag Latest         = True
+    isUniqueTag Recommended    = True
+    isUniqueTag Old            = False
+    isUniqueTag Prerelease     = False
+    isUniqueTag (Base       _) = False
+    isUniqueTag (UnknownTag _) = False
+
+  checkGHCVerIsValid = do
+    let ghcVers = toListOf (ix GHC % to M.keys % folded) dls
+    forM_ ghcVers $ \v ->
+      case [ x | (x,"") <- readP_to_S V.parseVersion (T.unpack . prettyVer $ v) ] of
+        [_] -> pure ()
+        _   -> do
+          lift $ $(logError) [i|GHC version #{v} is not valid |]
+          addError
+
+  -- a tool must have at least one of each mandatory tags
+  checkMandatoryTags tool = do
+    let allTags = join $ M.elems $ availableToolVersions dls tool
+    forM_ [Latest, Recommended] $ \t -> case elem t allTags of
+      False -> do
+        lift $ $(logError) [i|Tag #{t} missing from #{tool}|]
+        addError
+      True -> pure ()
+
+  -- all GHC versions must have a base tag
+  checkGHCHasBaseVersion = do
+    let allTags = M.toList $ availableToolVersions dls GHC
+    forM allTags $ \(ver, tags) -> case any isBase tags of
+      False -> do
+        lift $ $(logError) [i|Base tag missing from GHC ver #{ver}|]
+        addError
+      True -> pure ()
+
+  isBase (Base _) = True
+  isBase _        = False
+
+data TarballFilter = TarballFilter
+  { tfTool    :: Either GlobalTool (Maybe Tool)
+  , tfVersion :: Regex
+  }
+
+validateTarballs :: ( Monad m
+                    , MonadLogger m
+                    , MonadThrow m
+                    , MonadIO m
+                    , MonadUnliftIO m
+                    , MonadMask m
+                    , Alternative m
+                    , MonadFail m
+                    )
+                 => TarballFilter
+                 -> GHCupDownloads
+                 -> M.Map GlobalTool DownloadInfo
+                 -> m ExitCode
+validateTarballs (TarballFilter etool versionRegex) dls gt = do
+  ref <- liftIO $ newIORef 0
+
+  flip runReaderT ref $ do
+     -- download/verify all tarballs
+    let dlis = either (const []) (\tool -> nubOrd $ dls ^.. each %& indices (maybe (const True) (==) tool) %> each %& indices (matchTest versionRegex . T.unpack . prettyVer) % (viSourceDL % _Just `summing` viArch % each % each % each)) etool
+    let gdlis = nubOrd $ gt ^.. each
+    let allDls = either (const gdlis) (const dlis) etool
+    when (null allDls) $ $(logError) [i|no tarballs selected by filter|] *> addError
+    forM_ allDls downloadAll
+
+    -- exit
+    e <- liftIO $ readIORef ref
+    if e > 0
+      then pure $ ExitFailure e
+      else do
+        lift $ $(logInfo) [i|All good|]
+        pure ExitSuccess
+
+ where
+  runLogger = myLoggerT LoggerConfig { lcPrintDebug = True
+                                     , colorOutter  = B.hPut stderr
+                                     , rawOutter    = \_ -> pure ()
+                                     }
+  downloadAll dli = do
+    dirs <- liftIO getDirs
+
+    pfreq <- (
+      runLogger . runE @'[NoCompatiblePlatform, NoCompatibleArch, DistroNotFound] . liftE $ platformRequest
+      ) >>= \case
+              VRight r -> pure r
+              VLeft e -> do
+                lift $ runLogger
+                  ($(logError) $ T.pack $ prettyShow e)
+                liftIO $ exitWith (ExitFailure 2)
+
+    let appstate = AppState (Settings True False Never Curl False GHCupURL) dirs defaultKeyBindings (GHCupInfo mempty mempty mempty) pfreq
+
+    r <-
+      runLogger
+      . flip runReaderT appstate
+      . runResourceT
+      . runE @'[DigestError
+               , DownloadFailed
+               , UnknownArchive
+#if defined(TAR)
+               , Tar.FormatError
+#else
+               , ArchiveResult
+#endif
+               ]
+      $ do
+        case etool of
+          Right (Just GHCup) -> do
+            tmpUnpack <- lift mkGhcupTmpDir
+            _ <- liftE $ download (settings appstate) dli tmpUnpack Nothing
+            pure Nothing
+          Right _ -> do
+            p <- liftE $ downloadCached (settings appstate) dirs dli Nothing
+            fmap (Just . head . splitDirectories . head)
+              . liftE
+              . getArchiveFiles
+              $ p
+          Left ShimGen -> do
+            tmpUnpack <- lift mkGhcupTmpDir
+            _ <- liftE $ download (settings appstate) dli tmpUnpack Nothing
+            pure Nothing
+    case r of
+      VRight (Just basePath) -> do
+        case _dlSubdir dli of
+          Just (RealDir prel) -> do
+            lift $ $(logInfo)
+              [i|verifying subdir: #{prel}|]
+            when (basePath /= prel) $ do
+              lift $ $(logError)
+                [i|Subdir doesn't match: expected "#{prel}", got "#{basePath}"|]
+              addError
+          Just (RegexDir regexString) -> do
+            lift $ $(logInfo)
+              [i|verifying subdir (regex): #{regexString}|]
+            let regex = makeRegexOpts
+                  compIgnoreCase
+                  execBlank
+                  regexString
+            when (not (match regex basePath)) $ do
+              lift $ $(logError)
+                [i|Subdir doesn't match: expected regex "#{regexString}", got "#{basePath}"|]
+              addError
+          Nothing -> pure ()
+      VRight Nothing -> pure ()
+      VLeft  e -> do
+        lift $ $(logError)
+          [i|Could not download (or verify hash) of #{dli}, Error was: #{prettyShow e}|]
+        addError
--- a/app/ghcup/BrickMain.hs
+++ b/app/ghcup/BrickMain.hs
@@ -2,7 +2,10 @@
 {-# LANGUAGE DataKinds         #-}
 {-# LANGUAGE FlexibleContexts  #-}
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes       #-}
+{-# LANGUAGE TemplateHaskell   #-}
 {-# LANGUAGE TypeApplications  #-}
+{-# LANGUAGE ViewPatterns      #-}
 {-# LANGUAGE RankNTypes        #-}

 module BrickMain where
@@ -10,12 +13,11 @@ module BrickMain where
 import           GHCup
 import           GHCup.Download
 import           GHCup.Errors
-import           GHCup.Types.Optics ( getDirs )
-import           GHCup.Types         hiding ( LeanAppState(..) )
+import           GHCup.Types
 import           GHCup.Utils
-import           GHCup.Utils.Logger
 import           GHCup.Utils.Prelude ( decUTF8Safe )
 import           GHCup.Utils.File
+import           GHCup.Utils.Logger

 import           Brick
 import           Brick.Widgets.Border
@@ -25,11 +27,11 @@ import           Brick.Widgets.List             ( listSelectedFocusedAttr
                                                , listSelectedAttr
                                                , listAttr
                                                )
+#if !defined(TAR)
 import           Codec.Archive
-import           Control.Exception.Safe
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
 #endif
+import           Control.Exception.Safe
+import           Control.Monad.Logger
 import           Control.Monad.Reader
 import           Control.Monad.Trans.Except
 import           Control.Monad.Trans.Resource
@@ -38,28 +40,28 @@ import           Data.Functor
 import           Data.List
 import           Data.Maybe
 import           Data.IORef
+import           Data.String.Interpolate
 import           Data.Vector                    ( Vector
                                                , (!?)
                                                )
 import           Data.Versions           hiding ( str )
 import           Haskus.Utils.Variant.Excepts
 import           Prelude                 hiding ( appendFile )
-import           System.Directory               ( canonicalizePath )
-import           System.FilePath
+import           System.Environment
 import           System.Exit
 import           System.IO.Unsafe
 import           Text.PrettyPrint.HughesPJClass ( prettyShow )
 import           URI.ByteString

+import qualified GHCup.Types                   as GT
+
 import qualified Data.Text                     as T
 import qualified Graphics.Vty                  as Vty
 import qualified Data.Vector                   as V
-import System.Environment (getExecutablePath)
-import qualified System.Posix.Process          as SPP


 hiddenTools :: [Tool]
-hiddenTools = []
+hiddenTools = [Stack]


 data BrickData = BrickData
@@ -169,7 +171,7 @@ ui dimAttrs BrickState{ appSettings = as@BrickSettings{}, ..}
          | elem Latest lTag && not lInstalled =
              withAttr "hooray"
          | otherwise = id
-        active = if b then putCursor "GHCup" (Location (0,0)) . forceAttr "active" else id
+        active = if b then forceAttr "active" else id
    in  hooray $ active $ dim
          (   marks
          <+> padLeft (Pad 2)
@@ -257,7 +259,7 @@ app attrs dimAttrs =
  , appHandleEvent  = eventHandler
  , appStartEvent   = return
  , appAttrMap      = const attrs
-  , appChooseCursor = showFirstCursor
+  , appChooseCursor = neverShowCursor
  }

 defaultAttributes :: Bool -> AttrMap
@@ -373,7 +375,10 @@ listSelectedElement' BrickInternalState{..} = fmap (ix, ) $ clr !? ix


 selectLatest :: Vector ListResult -> Int
-selectLatest = fromMaybe 0 . V.findIndex (\ListResult {..} -> lTool == GHC && Latest `elem` lTag)
+selectLatest v =
+  case V.findIndex (\ListResult {..} -> lTool == GHC && Latest `elem` lTag) v of
+    Just ix -> ix
+    Nothing -> 0


 -- | Replace the @appState@ or construct it based on a filter function
@@ -400,14 +405,14 @@ filterVisible :: Bool -> Bool -> ListResult -> Bool
 filterVisible v t e | lInstalled e = True
                    | v
                    , not t
-                    , lTool e `notElem` hiddenTools = True
+                    , not (elem (lTool e) hiddenTools) = True
                    | not v
                    , t
-                    , Old `notElem` lTag e = True
+                    , not (elem Old (lTag e)) = True
                    | v
                    , t = True
-                    | otherwise = (Old `notElem` lTag e) &&
-                                  (lTool e `notElem` hiddenTools)
+                    | otherwise = not (elem Old (lTag e)) &&
+                                  not (elem (lTool e) hiddenTools)


 install' :: (MonadReader AppState m, MonadIO m, MonadThrow m, MonadFail m, MonadMask m, MonadUnliftIO m)
@@ -417,11 +422,17 @@ install' :: (MonadReader AppState m, MonadIO m, MonadThrow m, MonadFail m, Monad
 install' _ (_, ListResult {..}) = do
  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask

+  l        <- liftIO $ readIORef logger'
+  let runLogger = myLoggerT l
+
  let run =
-        runResourceT
+        runLogger
+          . runResourceT
          . runE
            @'[ AlreadyInstalled
+#if !defined(TAR)
              , ArchiveResult
+#endif
              , UnknownArchive
              , FileDoesNotExistError
              , CopyError
@@ -430,72 +441,56 @@ install' _ (_, ListResult {..}) = do
              , BuildFailed
              , TagNotFound
              , DigestError
-              , GPGError
              , DownloadFailed
-              , DirNotEmpty
              , NoUpdate
              , TarDirDoesNotExist
-              , FileAlreadyExistsError
-              , ProcessError
              ]

  run (do
-      ce <- liftIO $ fmap (either (const Nothing) Just) $
-        try @_ @SomeException $ getExecutablePath >>= canonicalizePath
-      dirs <- lift getDirs
      case lTool of
        GHC   -> do
          let vi = getVersionInfo lVer GHC dls
-          liftE $ installGHCBin lVer Nothing False $> (vi, dirs, ce)
+          liftE $ installGHCBin lVer $> vi
        Cabal -> do
          let vi = getVersionInfo lVer Cabal dls
-          liftE $ installCabalBin lVer Nothing False $> (vi, dirs, ce)
+          liftE $ installCabalBin lVer $> vi
        GHCup -> do
          let vi = snd <$> getLatest dls GHCup
-          liftE $ upgradeGHCup Nothing False $> (vi, dirs, ce)
+          liftE $ upgradeGHCup Nothing False $> vi
        HLS   -> do
          let vi = getVersionInfo lVer HLS dls
-          liftE $ installHLSBin lVer Nothing False $> (vi, dirs, ce)
+          liftE $ installHLSBin lVer $> vi
        Stack -> do
          let vi = getVersionInfo lVer Stack dls
-          liftE $ installStackBin lVer Nothing False $> (vi, dirs, ce)
+          liftE $ installStackBin lVer $> vi
    )
    >>= \case
-          VRight (vi, Dirs{..}, Just ce) -> do
-            forM_ (_viPostInstall =<< vi) $ \msg -> logInfo msg
-            case lTool of
-              GHCup -> do
-                up <- liftIO $ fmap (either (const Nothing) Just)
-                  $ try @_ @SomeException $ canonicalizePath (binDir </> "ghcup" <.> exeExt)
-                when ((normalise <$> up) == Just (normalise ce)) $
-                  -- TODO: track cli arguments of previous invocation
-                  liftIO $ SPP.executeFile ce False ["tui"] Nothing
-                logInfo "Please restart 'ghcup' for the changes to take effect"
-              _ -> pure ()
-            pure $ Right ()
-          VRight (vi, _, _) -> do
-            forM_ (_viPostInstall =<< vi) $ \msg -> logInfo msg
-            logInfo "Please restart 'ghcup' for the changes to take effect"
+          VRight vi                         -> do
+            forM_ (_viPostInstall =<< vi) $ \msg ->
+              myLoggerT l $ $(logInfo) msg
            pure $ Right ()
          VLeft  (V (AlreadyInstalled _ _)) -> pure $ Right ()
          VLeft (V NoUpdate) -> pure $ Right ()
-          VLeft e -> pure $ Left $ prettyShow e <> "\n"
-            <> "Also check the logs in ~/.ghcup/logs"
+          VLeft e -> pure $ Left [i|#{prettyShow e}
+Also check the logs in ~/.ghcup/logs|]


 set' :: BrickState -> (Int, ListResult) -> IO (Either String ())
 set' _ (_, ListResult {..}) = do
  settings <- readIORef settings'
+  l        <- readIORef logger'
+  let runLogger = myLoggerT l

  let run =
-        flip runReaderT settings
+        runLogger
+          . flip runReaderT settings
          . runE @'[FileDoesNotExistError , NotInstalled , TagNotFound]

  run (do
      case lTool of
-        GHC   -> liftE $ setGHC (GHCTargetVersion lCross lVer) SetGHCOnly Nothing $> ()
+        GHC   -> liftE $ setGHC (GHCTargetVersion lCross lVer) SetGHCOnly $> ()
        Cabal -> liftE $ setCabal lVer $> ()
-        HLS   -> liftE $ setHLS lVer SetHLSOnly Nothing $> ()
+        HLS   -> liftE $ setHLS lVer $> ()
        Stack -> liftE $ setStack lVer $> ()
        GHCup -> pure ()
    )
@@ -511,7 +506,9 @@ del' :: (MonadReader AppState m, MonadIO m, MonadFail m, MonadMask m, MonadUnlif
 del' _ (_, ListResult {..}) = do
  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask

-  let run = runE @'[NotInstalled]
+  l <- liftIO $ readIORef logger'
+  let runLogger = myLoggerT l
+  let run = myLoggerT l . runE @'[NotInstalled]

  run (do
      let vi = getVersionInfo lVer lTool dls
@@ -524,8 +521,8 @@ del' _ (_, ListResult {..}) = do
    )
    >>= \case
          VRight vi -> do
-            forM_ (_viPostRemove =<< vi) $ \msg ->
-              logInfo msg
+            forM_ (join $ fmap _viPostRemove vi) $ \msg ->
+              runLogger $ $(logInfo) msg
            pure $ Right ()
          VLeft  e -> pure $ Left (prettyShow e)

@@ -537,8 +534,8 @@ changelog' :: (MonadReader AppState m, MonadIO m)
 changelog' _ (_, ListResult {..}) = do
  AppState { pfreq, ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask
  case getChangeLog dls lTool (Left lVer) of
-    Nothing -> pure $ Left $
-      "Could not find ChangeLog for " <> prettyShow lTool <> ", version " <> T.unpack (prettyVer lVer)
+    Nothing -> pure $ Left
+      [i|Could not find ChangeLog for #{lTool}, version #{prettyVer lVer}|]
    Just uri -> do
      let cmd = case _rPlatform pfreq of
            Darwin  -> "open"
@@ -553,40 +550,58 @@ changelog' _ (_, ListResult {..}) = do
 settings' :: IORef AppState
 {-# NOINLINE settings' #-}
 settings' = unsafePerformIO $ do
-  dirs <- getAllDirs
-  let loggerConfig = LoggerConfig { lcPrintDebug  = False
-                                  , consoleOutter = \_ -> pure ()
-                                  , fileOutter    = \_ -> pure ()
-                                  , fancyColors   = True
-                                  }
-  newIORef $ AppState defaultSettings
+  dirs <- getDirs
+  newIORef $ AppState (Settings { cache      = True
+                                , noVerify   = False
+                                , keepDirs   = Never
+                                , downloader = Curl
+                                , verbose    = False
+                                , urlSource  = GHCupURL
+                                , ..
+                                })
                      dirs
                      defaultKeyBindings
                      (GHCupInfo mempty mempty mempty)
                      (PlatformRequest A_64 Darwin Nothing)
-                      loggerConfig



+logger' :: IORef LoggerConfig
+{-# NOINLINE logger' #-}
+logger' = unsafePerformIO
+  (newIORef $ LoggerConfig { lcPrintDebug = False
+                           , colorOutter  = \_ -> pure ()
+                           , rawOutter    = \_ -> pure ()
+                           }
+  )
+
+
 brickMain :: AppState
+          -> LoggerConfig
+          -> GHCupInfo
          -> IO ()
-brickMain s = do
+brickMain s l gi = do
  writeIORef settings' s
+  -- logger interpreter
+  writeIORef logger'   l
+  let runLogger = myLoggerT l

-  eAppData <- getAppData (Just $ ghcupInfo s)
+  no_color <- isJust <$> lookupEnv "NO_COLOR"
+
+  eAppData <- getAppData (Just gi)
  case eAppData of
    Right ad ->
      defaultMain
-          (app (defaultAttributes (noColor $ settings s)) (dimAttributes (noColor $ settings s)))
+          (app (defaultAttributes no_color) (dimAttributes no_color))
          (BrickState ad
                    defaultAppSettings
                    (constructList ad defaultAppSettings Nothing)
-                    (keyBindings (s :: AppState))
+                    (keyBindings s)

          )
        $> ()
    Left e -> do
-      flip runReaderT s $ logError $ "Error building app state: " <> T.pack (show e)
+      runLogger ($(logError) [i|Error building app state: #{show e}|])
      exitWith $ ExitFailure 2


@@ -597,11 +612,15 @@ defaultAppSettings = BrickSettings { showAllVersions = False, showAllTools = Fal
 getGHCupInfo :: IO (Either String GHCupInfo)
 getGHCupInfo = do
  settings <- readIORef settings'
+  l        <- readIORef logger'
+  let runLogger = myLoggerT l

  r <-
-    flip runReaderT settings
-    . runE @'[DigestError, GPGError, JSONError , DownloadFailed , FileDoesNotExistError]
-    $ liftE getDownloadsF
+    runLogger
+    . flip runReaderT settings
+    . runE @'[JSONError , DownloadFailed , FileDoesNotExistError]
+    $ liftE
+    $ getDownloadsF (GT.settings settings) (GT.dirs settings)

  case r of
    VRight a -> pure $ Right a
@@ -611,10 +630,14 @@ getGHCupInfo = do
 getAppData :: Maybe GHCupInfo
           -> IO (Either String BrickData)
 getAppData mgi = runExceptT $ do
+  l        <- liftIO $ readIORef logger'
+  let runLogger = myLoggerT l
+
  r <- ExceptT $ maybe getGHCupInfo (pure . Right) mgi
  liftIO $ modifyIORef settings' (\s -> s { ghcupInfo = r })
  settings <- liftIO $ readIORef settings'

-  flip runReaderT settings $ do
+  runLogger . flip runReaderT settings $ do
    lV <- listVersions Nothing Nothing
    pure $ BrickData (reverse lV)
+
--- a/app/ghcup/GHCup/OptParse.hs
+++ b/app/ghcup/GHCup/OptParse.hs
@@ -1,331 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-
-
-module GHCup.OptParse (
-    module GHCup.OptParse.Common
-  , module GHCup.OptParse.Install
-  , module GHCup.OptParse.Set
-  , module GHCup.OptParse.UnSet
-  , module GHCup.OptParse.Rm
-  , module GHCup.OptParse.Compile
-  , module GHCup.OptParse.Config
-  , module GHCup.OptParse.Whereis
-  , module GHCup.OptParse.List
-#ifndef DISABLE_UPGRADE
-  , module GHCup.OptParse.Upgrade
-#endif
-  , module GHCup.OptParse.ChangeLog
-  , module GHCup.OptParse.Prefetch
-  , module GHCup.OptParse.GC
-  , module GHCup.OptParse.DInfo
-  , module GHCup.OptParse.Nuke
-  , module GHCup.OptParse.ToolRequirements
-  , module GHCup.OptParse.Run
-  , module GHCup.OptParse
-) where
-
-
-import           GHCup.OptParse.Common
-import           GHCup.OptParse.Install
-import           GHCup.OptParse.Set
-import           GHCup.OptParse.UnSet
-import           GHCup.OptParse.Rm
-import           GHCup.OptParse.Run
-import           GHCup.OptParse.Compile
-import           GHCup.OptParse.Config
-import           GHCup.OptParse.Whereis
-import           GHCup.OptParse.List
-#ifndef DISABLE_UPGRADE
-import           GHCup.OptParse.Upgrade
-#endif
-import           GHCup.OptParse.ChangeLog
-import           GHCup.OptParse.Prefetch
-import           GHCup.OptParse.GC
-import           GHCup.OptParse.DInfo
-import           GHCup.OptParse.ToolRequirements
-import           GHCup.OptParse.Nuke
-
-import           GHCup.Types
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Data.Bifunctor
-import           Data.Either
-import           Data.Functor
-import           Data.Maybe
-import           Options.Applicative     hiding ( style )
-import           Options.Applicative.Help.Pretty ( text )
-import           Prelude                 hiding ( appendFile )
-import           URI.ByteString
-
-import qualified Data.ByteString.UTF8          as UTF8
-
-
-
-data Options = Options
-  {
-  -- global options
-    optVerbose     :: Maybe Bool
-  , optCache       :: Maybe Bool
-  , optMetaCache   :: Maybe Integer
-  , optUrlSource   :: Maybe URI
-  , optNoVerify    :: Maybe Bool
-  , optKeepDirs    :: Maybe KeepDirs
-  , optsDownloader :: Maybe Downloader
-  , optNoNetwork   :: Maybe Bool
-  , optGpg         :: Maybe GPGSetting
-  -- commands
-  , optCommand     :: Command
-  }
-
-data Command
-  = Install (Either InstallCommand InstallOptions)
-  | InstallCabalLegacy InstallOptions
-  | Set (Either SetCommand SetOptions)
-  | UnSet UnsetCommand
-  | List ListOptions
-  | Rm (Either RmCommand RmOptions)
-  | DInfo
-  | Compile CompileCommand
-  | Config ConfigCommand
-  | Whereis WhereisOptions WhereisCommand
-#ifndef DISABLE_UPGRADE
-  | Upgrade UpgradeOpts Bool
-#endif
-  | ToolRequirements ToolReqOpts
-  | ChangeLog ChangeLogOptions
-  | Nuke
-#if defined(BRICK)
-  | Interactive
-#endif
-  | Prefetch PrefetchCommand
-  | GC GCOptions
-  | Run RunOptions
-
-
-
-opts :: Parser Options
-opts =
-  Options
-    <$> invertableSwitch "verbose" (Just 'v') False (help "Enable verbosity (default: disabled)")
-    <*> invertableSwitch "cache" (Just 'c') False (help "Cache downloads in ~/.ghcup/cache (default: disabled)")
-    <*> optional (option auto (long "metadata-caching" <> help "How long the yaml metadata caching interval is (in seconds), 0 to disable" <> internal))
-    <*> optional
-          (option
-            (eitherReader parseUri)
-            (  short 's'
-            <> long "url-source"
-            <> metavar "URL"
-            <> help "Alternative ghcup download info url"
-            <> internal
-            <> completer fileUri
-            )
-          )
-    <*> (fmap . fmap) not (invertableSwitch "verify" (Just 'n') True (help "Disable tarball checksum verification (default: enabled)"))
-    <*> optional (option
-          (eitherReader keepOnParser)
-          (  long "keep"
-          <> metavar "<always|errors|never>"
-          <> help
-               "Keep build directories? (default: errors)"
-          <> hidden
-          <> completer (listCompleter ["always", "errors", "never"])
-          ))
-    <*> optional (option
-          (eitherReader downloaderParser)
-          (  long "downloader"
-#if defined(INTERNAL_DOWNLOADER)
-          <> metavar "<internal|curl|wget>"
-          <> help
-          "Downloader to use (default: internal)"
-          <> completer (listCompleter ["internal", "curl", "wget"])
-#else
-          <> metavar "<curl|wget>"
-          <> help
-          "Downloader to use (default: curl)"
-          <> completer (listCompleter ["curl", "wget"])
-#endif
-          <> hidden
-          ))
-    <*> invertableSwitch "offline" (Just 'o') False (help "Don't do any network calls, trying cached assets and failing if missing.")
-    <*> optional (option
-          (eitherReader gpgParser)
-          (  long "gpg"
-          <> metavar "<strict|lax|none>"
-          <> help
-          "GPG verification (default: none)"
-          <> completer (listCompleter ["strict", "lax", "none"])
-          ))
-    <*> com
- where
-  parseUri s' =
-    first show $ parseURI strictURIParserOptions (UTF8.fromString s')
-
-
-com :: Parser Command
-com =
-  subparser
-#if defined(BRICK)
-      (  command
-          "tui"
-          (   (\_ -> Interactive)
-          <$> info
-                helper
-                (  progDesc "Start the interactive GHCup UI"
-                )
-          )
-      <>  command
-#else
-      (  command
-#endif
-          "install"
-          (   Install
-          <$> info
-                (installParser <**> helper)
-                (  progDesc "Install or update GHC/cabal/HLS/stack"
-                <> footerDoc (Just $ text installToolFooter)
-                )
-          )
-      <> command
-           "set"
-           (info
-             (Set <$> setParser <**> helper)
-             (  progDesc "Set currently active GHC/cabal version"
-             <> footerDoc (Just $ text setFooter)
-             )
-           )
-      <> command
-           "unset"
-           (info
-             (UnSet <$> unsetParser <**> helper)
-             (  progDesc "Unset currently active GHC/cabal version"
-             <> footerDoc (Just $ text unsetFooter)
-             )
-           )
-      <> command
-           "rm"
-           (info
-             (Rm <$> rmParser <**> helper)
-             (  progDesc "Remove a GHC/cabal/HLS/stack version"
-             <> footerDoc (Just $ text rmFooter)
-             )
-           )
-
-      <> command
-           "list"
-           (info (List <$> listOpts <**> helper)
-                 (progDesc "Show available GHCs and other tools")
-           )
-#ifndef DISABLE_UPGRADE
-      <> command
-           "upgrade"
-           (info
-             (    (Upgrade <$> upgradeOptsP <*> switch
-                    (short 'f' <> long "force" <> help "Force update")
-                  )
-             <**> helper
-             )
-             (progDesc "Upgrade ghcup")
-           )
-#endif
-      <> command
-           "compile"
-           (   Compile
-           <$> info (compileP <**> helper)
-                    (progDesc "Compile a tool from source")
-           )
-      <> command
-           "whereis"
-            (info
-             (   (Whereis
-                     <$> (WhereisOptions <$> switch (short 'd' <> long "directory" <> help "return directory of the binary instead of the binary location"))
-                     <*> whereisP
-                 ) <**> helper
-             )
-             (progDesc "Find a tools location"
-             <> footerDoc ( Just $ text whereisFooter ))
-           )
-      <> command
-           "prefetch"
-            (info
-             (   (Prefetch
-                     <$> prefetchP
-                 ) <**> helper
-             )
-             (progDesc "Prefetch assets"
-             <> footerDoc ( Just $ text prefetchFooter ))
-           )
-      <> command
-           "gc"
-            (info
-             (   (GC
-                     <$> gcP
-                 ) <**> helper
-             )
-             (progDesc "Garbage collection"
-             <> footerDoc ( Just $ text gcFooter ))
-           )
-      <> command
-              "run"
-               (Run
-               <$>
-                 info
-                   (runOpts <**> helper)
-                   (progDesc "Run a command with the given tool in PATH"
-                   <> footerDoc ( Just $ text runFooter )
-                   )
-               )
-      <> commandGroup "Main commands:"
-      )
-    <|> subparser
-          (  command
-              "debug-info"
-              ((\_ -> DInfo) <$> info helper (progDesc "Show debug info"))
-          <> command
-               "tool-requirements"
-               (   ToolRequirements
-               <$> info (toolReqP <**> helper)
-                        (progDesc "Show the requirements for ghc/cabal")
-               )
-          <> command
-               "changelog"
-               (info
-                  (fmap ChangeLog changelogP <**> helper)
-                  (  progDesc "Find/show changelog"
-                  <> footerDoc (Just $ text changeLogFooter)
-                  )
-               )
-          <> command
-               "config"
-               (   Config
-               <$> info (configP <**> helper)
-                        (progDesc "Show or set config" <> footerDoc (Just $ text configFooter))
-               )
-          <> commandGroup "Other commands:"
-          <> hidden
-          )
-    <|> subparser
-          (  command
-              "install-cabal"
-              (info
-                 ((InstallCabalLegacy <$> installOpts (Just Cabal)) <**> helper)
-                 (  progDesc "Install or update cabal"
-                 <> footerDoc (Just $ text installCabalFooter)
-                 )
-              )
-          <> internal
-          )
-     <|> subparser
-          (command
-              "nuke"
-               (info (pure Nuke <**> helper)
-                     (progDesc "Completely remove ghcup from your system"))
-           <> commandGroup "Nuclear Commands:"
-           <> hidden
-          )
--- a/app/ghcup/GHCup/OptParse/ChangeLog.hs
+++ b/app/ghcup/GHCup/OptParse/ChangeLog.hs
@@ -1,151 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.ChangeLog where
-
-
-import           GHCup.Types
-import           GHCup.Utils.Logger
-import           GHCup.OptParse.Common
-import           GHCup.Utils.String.QQ
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Functor
-import           Data.Maybe
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import Control.Exception.Safe (MonadMask)
-import GHCup.Types.Optics
-import GHCup.Utils
-import Data.Versions
-import URI.ByteString (serializeURIRef')
-import GHCup.Utils.Prelude
-import GHCup.Utils.File (exec)
-import Data.Char (toLower)
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data ChangeLogOptions = ChangeLogOptions
-  { clOpen    :: Bool
-  , clTool    :: Maybe Tool
-  , clToolVer :: Maybe ToolVersion
-  }
-
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-changelogP :: Parser ChangeLogOptions
-changelogP =
-  (\x y -> ChangeLogOptions x y)
-    <$> switch (short 'o' <> long "open" <> help "xdg-open the changelog url")
-    <*> optional
-          (option
-            (eitherReader
-              (\s' -> case fmap toLower s' of
-                "ghc"   -> Right GHC
-                "cabal" -> Right Cabal
-                "ghcup" -> Right GHCup
-                "stack" -> Right Stack
-                e       -> Left e
-              )
-            )
-            (short 't' <> long "tool" <> metavar "<ghc|cabal|ghcup>" <> help
-              "Open changelog for given tool (default: ghc)"
-              <> completer toolCompleter
-            )
-          )
-    <*> optional (toolVersionArgument Nothing Nothing)
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-changeLogFooter :: String
-changeLogFooter = [s|Discussion:
-  By default returns the URI of the ChangeLog of the latest GHC release.
-  Pass '-o' to automatically open via xdg-open.|]
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-changelog :: ( Monad m
-             , MonadMask m
-             , MonadUnliftIO m
-             , MonadFail m
-             )
-          => ChangeLogOptions
-          -> (forall a . ReaderT AppState m a -> m a)
-          -> (ReaderT LeanAppState m () -> m ())
-          -> m ExitCode
-changelog ChangeLogOptions{..} runAppState runLogger = do
-  GHCupInfo { _ghcupDownloads = dls } <- runAppState getGHCupInfo
-  let tool = fromMaybe GHC clTool
-      ver' = maybe
-        (Right Latest)
-        (\case
-          ToolVersion tv -> Left (_tvVersion tv) -- FIXME: ugly sharing of ToolVersion
-          ToolTag     t  -> Right t
-        )
-        clToolVer
-      muri = getChangeLog dls tool ver'
-  case muri of
-    Nothing -> do
-      runLogger
-        (logWarn $
-          "Could not find ChangeLog for " <> T.pack (prettyShow tool) <> ", version " <> either prettyVer (T.pack . show) ver'
-        )
-      pure ExitSuccess
-    Just uri -> do
-      pfreq <- runAppState getPlatformReq
-      let uri' = T.unpack . decUTF8Safe . serializeURIRef' $ uri
-          cmd = case _rPlatform pfreq of
-                  Darwin  -> "open"
-                  Linux _ -> "xdg-open"
-                  FreeBSD -> "xdg-open"
-                  Windows -> "start"
-
-      if clOpen
-        then do
-          runAppState $
-            exec cmd
-                 [T.unpack $ decUTF8Safe $ serializeURIRef' uri]
-                 Nothing
-                 Nothing
-              >>= \case
-                    Right _ -> pure ExitSuccess
-                    Left  e -> logError (T.pack $ prettyShow e)
-                      >> pure (ExitFailure 13)
-        else liftIO $ putStrLn uri' >> pure ExitSuccess
--- a/app/ghcup/GHCup/OptParse/Common.hs
+++ b/app/ghcup/GHCup/OptParse/Common.hs
@@ -1,766 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE TypeApplications #-}
-{-# LANGUAGE NumericUnderscores #-}
-
-module GHCup.OptParse.Common where
-
-
-import           GHCup
-import           GHCup.Download
-import           GHCup.Errors
-import           GHCup.Platform
-import           GHCup.Types
-import           GHCup.Types.Optics
-import           GHCup.Utils
-import           GHCup.Utils.File
-import           GHCup.Utils.Logger
-import           GHCup.Utils.MegaParsec
-import           GHCup.Utils.Prelude
-
-import           Control.DeepSeq
-import           Control.Concurrent
-import           Control.Concurrent.Async
-import           Control.Exception.Safe
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Data.Aeson
-#if MIN_VERSION_aeson(2,0,0)
-import qualified Data.Aeson.Key    as KM
-import qualified Data.Aeson.KeyMap as KM
-#else
-import qualified Data.HashMap.Strict as KM
-#endif
-import           Data.ByteString.Lazy           ( ByteString )
-import           Data.Bifunctor
-import           Data.Char
-import           Data.Either
-import           Data.Functor
-import           Data.List                      ( nub, sort, sortBy, isPrefixOf, stripPrefix )
-import           Data.Maybe
-import           Data.Text                      ( Text )
-import           Data.Versions           hiding ( str )
-import           Data.Void
-import qualified Data.Vector      as V
-import           GHC.IO.Exception
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           Safe
-import           System.Directory
-import           System.Process                  ( readProcess )
-import           System.FilePath
-import           Text.HTML.TagSoup       hiding ( Tag )
-import           URI.ByteString
-
-import qualified Data.ByteString.UTF8          as UTF8
-import qualified Data.Map.Strict               as M
-import qualified Data.Text                     as T
-import qualified Text.Megaparsec               as MP
-import qualified System.FilePath.Posix         as FP
-import GHCup.Version
-import Control.Exception (evaluate)
-
-
-    -------------
-    --[ Types ]--
-    -------------
-
-data ToolVersion = ToolVersion GHCTargetVersion -- target is ignored for cabal
-                 | ToolTag Tag
-
-- a superset of ToolVersion
-data SetToolVersion = SetToolVersion GHCTargetVersion
-                    | SetToolTag Tag
-                    | SetRecommended
-                    | SetNext
-
-prettyToolVer :: ToolVersion -> String
-prettyToolVer (ToolVersion v') = T.unpack $ tVerToText v'
-prettyToolVer (ToolTag t) = show t
-
-toSetToolVer :: Maybe ToolVersion -> SetToolVersion
-toSetToolVer (Just (ToolVersion v')) = SetToolVersion v'
-toSetToolVer (Just (ToolTag t')) = SetToolTag t'
-toSetToolVer Nothing = SetRecommended
-
-
-
-
-    --------------
-    --[ Parser ]--
-    --------------
-
-
-- | same as toolVersionParser, except as an argument.
-toolVersionArgument :: Maybe ListCriteria -> Maybe Tool -> Parser ToolVersion
-toolVersionArgument criteria tool =
-  argument (eitherReader toolVersionEither)
-    (metavar (mv tool)
-    <> completer (tagCompleter (fromMaybe GHC tool) [])
-    <> foldMap (completer . versionCompleter criteria) tool)
- where
-  mv (Just GHC) = "GHC_VERSION|TAG"
-  mv (Just HLS) = "HLS_VERSION|TAG"
-  mv _          = "VERSION|TAG"
-
-
-versionParser :: Parser GHCTargetVersion
-versionParser = option
-  (eitherReader tVersionEither)
-  (short 'v' <> long "version" <> metavar "VERSION" <> help "The target version"
-  )
-
-versionParser' :: Maybe ListCriteria -> Maybe Tool -> Parser Version
-versionParser' criteria tool = argument
-  (eitherReader (first show . version . T.pack))
-  (metavar "VERSION"  <> foldMap (completer . versionCompleter criteria) tool)
-
-versionArgument :: Maybe ListCriteria -> Maybe Tool -> Parser GHCTargetVersion
-versionArgument criteria tool = argument (eitherReader tVersionEither) (metavar "VERSION" <> foldMap (completer . versionCompleter criteria) tool)
-
-
-- https://github.com/pcapriotti/optparse-applicative/issues/148
-
-- | A switch that can be enabled using --foo and disabled using --no-foo.
--
-- The option modifier is applied to only the option that is *not* enabled
-- by default. For example:
--
-- > invertableSwitch "recursive" True (help "do not recurse into directories")
--
-- This example makes --recursive enabled by default, so
-- the help is shown only for --no-recursive.
-invertableSwitch
-    :: String              -- ^ long option
-    -> Maybe Char          -- ^ short option for the non-default option
-    -> Bool                -- ^ is switch enabled by default?
-    -> Mod FlagFields Bool -- ^ option modifier
-    -> Parser (Maybe Bool)
-invertableSwitch longopt shortopt defv optmod = invertableSwitch' longopt shortopt defv
-    (if defv then mempty else optmod)
-    (if defv then optmod else mempty)
-
-- | Allows providing option modifiers for both --foo and --no-foo.
-invertableSwitch'
-    :: String              -- ^ long option (eg "foo")
-    -> Maybe Char          -- ^ short option for the non-default option
-    -> Bool                -- ^ is switch enabled by default?
-    -> Mod FlagFields Bool -- ^ option modifier for --foo
-    -> Mod FlagFields Bool -- ^ option modifier for --no-foo
-    -> Parser (Maybe Bool)
-invertableSwitch' longopt shortopt defv enmod dismod = optional
-    ( flag' True ( enmod <> long longopt <> if defv then mempty else maybe mempty short shortopt)
-    <|> flag' False (dismod <> long nolongopt <> if defv then maybe mempty short shortopt else mempty)
-    )
-  where
-    nolongopt = "no-" ++ longopt
-
-
-
-    ---------------------
-    --[ Either Parser ]--
-    ---------------------
-
-
-platformParser :: String -> Either String PlatformRequest
-platformParser s' = case MP.parse (platformP <* MP.eof) "" (T.pack s') of
-  Right r -> pure r
-  Left  e -> Left $ errorBundlePretty e
- where
-  archP :: MP.Parsec Void Text Architecture
-  archP = MP.try (MP.chunk "x86_64" $> A_64) <|> (MP.chunk "i386" $> A_32)
-  platformP :: MP.Parsec Void Text PlatformRequest
-  platformP = choice'
-    [ (`PlatformRequest` FreeBSD)
-    <$> (archP <* MP.chunk "-")
-    <*> (  MP.chunk "portbld"
-        *> (   MP.try (Just <$> verP (MP.chunk "-freebsd" <* MP.eof))
-           <|> pure Nothing
-           )
-        <* MP.chunk "-freebsd"
-        )
-    , (`PlatformRequest` Darwin)
-    <$> (archP <* MP.chunk "-")
-    <*> (  MP.chunk "apple"
-        *> (   MP.try (Just <$> verP (MP.chunk "-darwin" <* MP.eof))
-           <|> pure Nothing
-           )
-        <* MP.chunk "-darwin"
-        )
-    , (\a d mv -> PlatformRequest a (Linux d) mv)
-    <$> (archP <* MP.chunk "-")
-    <*> distroP
-    <*> ((MP.try (Just <$> verP (MP.chunk "-linux" <* MP.eof)) <|> pure Nothing
-         )
-        <* MP.chunk "-linux"
-        )
-    ]
-  distroP :: MP.Parsec Void Text LinuxDistro
-  distroP = choice'
-    [ MP.chunk "debian" $> Debian
-    , MP.chunk "deb" $> Debian
-    , MP.chunk "ubuntu" $> Ubuntu
-    , MP.chunk "mint" $> Mint
-    , MP.chunk "fedora" $> Fedora
-    , MP.chunk "centos" $> CentOS
-    , MP.chunk "redhat" $> RedHat
-    , MP.chunk "alpine" $> Alpine
-    , MP.chunk "gentoo" $> Gentoo
-    , MP.chunk "exherbo" $> Exherbo
-    , MP.chunk "unknown" $> UnknownLinux
-    ]
-
-
-uriParser :: String -> Either String URI
-uriParser = first show . parseURI strictURIParserOptions . UTF8.fromString
-
-
-absolutePathParser :: FilePath -> Either String FilePath
-absolutePathParser f = case isValid f && isAbsolute f of
-              True -> Right $ normalise f
-              False -> Left "Please enter a valid absolute filepath."
-
-isolateParser :: FilePath -> Either String FilePath
-isolateParser f = case isValid f of
-              True -> Right $ normalise f
-              False -> Left "Please enter a valid filepath for isolate dir."
-
-toolVersionEither :: String -> Either String ToolVersion
-toolVersionEither s' =
-  second ToolTag (tagEither s') <|> second ToolVersion (tVersionEither s')
-
-tagEither :: String -> Either String Tag
-tagEither s' = case fmap toLower s' of
-  "recommended" -> Right Recommended
-  "latest"      -> Right Latest
-  ('b':'a':'s':'e':'-':ver') -> case pvp (T.pack ver') of
-                                  Right x -> Right (Base x)
-                                  Left  _ -> Left $ "Invalid PVP version for base " <> ver'
-  other         -> Left $ "Unknown tag " <> other
-
-
-tVersionEither :: String -> Either String GHCTargetVersion
-tVersionEither =
-  first (const "Not a valid version") . MP.parse ghcTargetVerP "" . T.pack
-
-
-toolParser :: String -> Either String Tool
-toolParser s' | t == T.pack "ghc"   = Right GHC
-              | t == T.pack "cabal" = Right Cabal
-              | t == T.pack "hls"   = Right HLS
-              | t == T.pack "stack" = Right Stack
-              | otherwise           = Left ("Unknown tool: " <> s')
-  where t = T.toLower (T.pack s')
-
-
-criteriaParser :: String -> Either String ListCriteria
-criteriaParser s' | t == T.pack "installed" = Right ListInstalled
-                  | t == T.pack "set"       = Right ListSet
-                  | t == T.pack "available" = Right ListAvailable
-                  | otherwise               = Left ("Unknown criteria: " <> s')
-  where t = T.toLower (T.pack s')
-
-
-
-keepOnParser :: String -> Either String KeepDirs
-keepOnParser s' | t == T.pack "always" = Right Always
-                | t == T.pack "errors" = Right Errors
-                | t == T.pack "never"  = Right Never
-                | otherwise            = Left ("Unknown keep value: " <> s')
-  where t = T.toLower (T.pack s')
-
-
-downloaderParser :: String -> Either String Downloader
-downloaderParser s' | t == T.pack "curl"     = Right Curl
-                    | t == T.pack "wget"     = Right Wget
-#if defined(INTERNAL_DOWNLOADER)
-                    | t == T.pack "internal" = Right Internal
-#endif
-                    | otherwise = Left ("Unknown downloader value: " <> s')
-  where t = T.toLower (T.pack s')
-
-gpgParser :: String -> Either String GPGSetting
-gpgParser s' | t == T.pack "strict" = Right GPGStrict
-             | t == T.pack "lax"    = Right GPGLax
-             | t == T.pack "none"   = Right GPGNone
-             | otherwise = Left ("Unknown gpg setting value: " <> s')
-  where t = T.toLower (T.pack s')
-
-
-
-    ------------------
-    --[ Completers ]--
-    ------------------
-
-
-toolCompleter :: Completer
-toolCompleter = listCompleter ["ghc", "cabal", "hls", "stack"]
-
-gitFileUri :: [String] -> Completer
-gitFileUri add = mkCompleter $ fileUri' (["git://"] <> add)
-
-fileUri :: Completer
-fileUri = mkCompleter $ fileUri' []
-
-fileUri' :: [String] -> String -> IO [String]
-fileUri' add = \case
-  "" -> do
-    pwd <- getCurrentDirectory
-    pure $ ["https://", "http://", "file:///", "file://" <> pwd <> "/"] <> add
-  xs
-   | "file:///" `isPrefixOf` xs -> fmap ("file://" <>) <$>
-      case stripPrefix "file://" xs of
-        Nothing -> pure []
-        Just r ->  do
-          pwd <- getCurrentDirectory
-          dirs  <- compgen "directory" r ["-S", "/"]
-          files <- filter (\f -> (f <> "/") `notElem` dirs) <$> compgen "file" r []
-          pure (dirs <> files <> if r `isPrefixOf` pwd then [pwd <> "/"] else [])
-   | xs `isPrefixOf` "file:///" -> pure ["file:///"]
-   | xs `isPrefixOf` "https://" -> pure ["https://"]
-   | xs `isPrefixOf` "http://"  -> pure ["http://"]
-   | otherwise -> pure []
- where
-  compgen :: String -> String -> [String] -> IO [String]
-  compgen action' r opts = do
-    let cmd = unwords $ ["compgen", "-A", action'] <> opts <> ["--", requote r]
-    result <- tryIO $ readProcess "bash" ["-c", cmd] ""
-    return . lines . either (const []) id $ result
-
-  -- | Strongly quote the string we pass to compgen.
-  --
-  -- We need to do this so bash doesn't expand out any ~ or other
-  -- chars we want to complete on, or emit an end of line error
-  -- when seeking the close to the quote.
-  -- 
-  -- NOTE: copied from https://hackage.haskell.org/package/optparse-applicative-0.17.0.0/docs/src/Options.Applicative.Builder.Completer.html#requote
-  requote :: String -> String
-  requote s =
-    let
-      -- Bash doesn't appear to allow "mixed" escaping
-      -- in bash completions. So we don't have to really
-      -- worry about people swapping between strong and
-      -- weak quotes.
-      unescaped =
-        case s of
-          -- It's already strongly quoted, so we
-          -- can use it mostly as is, but we must
-          -- ensure it's closed off at the end and
-          -- there's no single quotes in the
-          -- middle which might confuse bash.
-          ('\'': rs) -> unescapeN rs
-
-          -- We're weakly quoted.
-          ('"': rs)  -> unescapeD rs
-
-          -- We're not quoted at all.
-          -- We need to unescape some characters like
-          -- spaces and quotation marks.
-          elsewise   -> unescapeU elsewise
-    in
-      strong unescaped
-
-    where
-      strong ss = '\'' : foldr go "'" ss
-        where
-          -- If there's a single quote inside the
-          -- command: exit from the strong quote and
-          -- emit it the quote escaped, then resume.
-          go '\'' t = "'\\''" ++ t
-          go h t    = h : t
-
-      -- Unescape a strongly quoted string
-      -- We have two recursive functions, as we
-      -- can enter and exit the strong escaping.
-      unescapeN = goX
-        where
-          goX ('\'' : xs) = goN xs
-          goX (x : xs) = x : goX xs
-          goX [] = []
-
-          goN ('\\' : '\'' : xs) = '\'' : goN xs
-          goN ('\'' : xs) = goX xs
-          goN (x : xs) = x : goN xs
-          goN [] = []
-
-      -- Unescape an unquoted string
-      unescapeU = goX
-        where
-          goX [] = []
-          goX ('\\' : x : xs) = x : goX xs
-          goX (x : xs) = x : goX xs
-
-      -- Unescape a weakly quoted string
-      unescapeD = goX
-        where
-          -- Reached an escape character
-          goX ('\\' : x : xs)
-            -- If it's true escapable, strip the
-            -- slashes, as we're going to strong
-            -- escape instead.
-            | x `elem` ("$`\"\\\n" :: String) = x : goX xs
-            | otherwise = '\\' : x : goX xs
-          -- We've ended quoted section, so we
-          -- don't recurse on goX, it's done.
-          goX ('"' : xs)
-            = xs
-          -- Not done, but not a special character
-          -- just continue the fold.
-          goX (x : xs)
-            = x : goX xs
-          goX []
-            = []
-
-
-tagCompleter :: Tool -> [String] -> Completer
-tagCompleter tool add = listIOCompleter $ do
-  dirs' <- liftIO getAllDirs
-  let loggerConfig = LoggerConfig
-        { lcPrintDebug   = False
-        , consoleOutter  = mempty
-        , fileOutter     = mempty
-        , fancyColors    = False
-        }
-  let appState = LeanAppState
-        (defaultSettings { noNetwork = True })
-        dirs'
-        defaultKeyBindings
-        loggerConfig
-
-  mGhcUpInfo <- flip runReaderT appState . runE $ getDownloadsF
-  case mGhcUpInfo of
-    VRight ghcupInfo -> do
-      let allTags = filter (/= Old)
-            $ _viTags =<< M.elems (availableToolVersions (_ghcupDownloads ghcupInfo) tool)
-      pure $ nub $ (add ++) $ fmap tagToString allTags
-    VLeft _ -> pure  (nub $ ["recommended", "latest"] ++ add)
-
-
-versionCompleter :: Maybe ListCriteria -> Tool -> Completer
-versionCompleter criteria tool = listIOCompleter $ do
-  dirs' <- liftIO getAllDirs
-  let loggerConfig = LoggerConfig
-        { lcPrintDebug   = False
-        , consoleOutter  = mempty
-        , fileOutter     = mempty
-        , fancyColors    = False
-        }
-  let settings = defaultSettings { noNetwork = True }
-  let leanAppState = LeanAppState
-                   settings
-                   dirs'
-                   defaultKeyBindings
-                   loggerConfig
-  mpFreq <- flip runReaderT leanAppState . runE $ platformRequest
-  mGhcUpInfo <- flip runReaderT leanAppState . runE $ getDownloadsF
-  forFold mpFreq $ \pfreq -> do
-    forFold mGhcUpInfo $ \ghcupInfo -> do
-      let appState = AppState
-            settings
-            dirs'
-            defaultKeyBindings
-            ghcupInfo
-            pfreq
-            loggerConfig
-
-          runEnv = flip runReaderT appState
-
-      installedVersions <- runEnv $ listVersions (Just tool) criteria
-      return $ T.unpack . prettyVer . lVer <$> installedVersions
-
-
-toolDlCompleter :: Tool -> Completer
-toolDlCompleter tool = mkCompleter $ \case
-  "" -> pure (initUrl tool <> ["https://", "http://", "file:///"])
-  word
-    | "file://" `isPrefixOf` word -> fileUri' [] word
-    -- downloads.haskell.org
-    | "https://downloads.haskell.org/" `isPrefixOf` word ->
-        fmap (completePrefix word) . prefixMatch (FP.takeFileName word) <$> fromHRef word
-
-    -- github releases
-    | "https://github.com/haskell/haskell-language-server/releases/download/" `isPrefixOf` word
-    , let xs = splitPath word
-    , (length xs == 6 && last word == '/') || (length xs == 7 && last word /= '/') ->
-        fmap (\x -> completePrefix word x <> "/") . prefixMatch (FP.takeFileName word) <$> getGithubReleases "haskell" "haskell-language-server"
-    | "https://github.com/commercialhaskell/stack/releases/download/" == word
-    , let xs = splitPath word
-    , (length xs == 6 && last word == '/') || (length xs == 7 && last word /= '/') ->
-        fmap (\x -> completePrefix word x <> "/") . prefixMatch (FP.takeFileName word) <$> getGithubReleases "commercialhaskell" "stack"
-
-    -- github release assets
-    | "https://github.com/haskell/haskell-language-server/releases/download/" `isPrefixOf` word
-    , let xs = splitPath word
-    , (length xs == 7 && last word == '/') || length xs == 8
-    , let rel = xs !! 6
-    , length rel > 1 -> do
-        fmap (completePrefix word) . prefixMatch (FP.takeFileName word) <$> getGithubAssets "haskell" "haskell-language-server" (init rel)
-    | "https://github.com/commercialhaskell/stack/releases/download/" `isPrefixOf` word
-    , let xs = splitPath word
-    , (length xs == 7 && last word == '/') || length xs == 8
-    , let rel = xs !! 6
-    , length rel > 1 -> do
-        fmap (completePrefix word) . prefixMatch (FP.takeFileName word) <$> getGithubAssets "commercialhaskell" "stack" (init rel)
-
-    -- github
-    | "https://github.com/c" `isPrefixOf` word -> pure ["https://github.com/commercialhaskell/stack/releases/download/"]
-    | "https://github.com/h" `isPrefixOf` word -> pure ["https://github.com/haskell/haskell-language-server/releases/download/"]
-    | "https://g" `isPrefixOf` word
-    , tool == Stack -> pure ["https://github.com/commercialhaskell/stack/releases/download/"]
-    | "https://g" `isPrefixOf` word
-    , tool == HLS -> pure ["https://github.com/haskell/haskell-language-server/releases/download/"]
-
-    | "https://d" `isPrefixOf` word -> pure $ filter ("https://downloads.haskell.org/" `isPrefixOf`) $ initUrl tool
-
-    | "h" `isPrefixOf` word -> pure $ initUrl tool
-
-    | word `isPrefixOf` "file:///" -> pure ["file:///"]
-    | word `isPrefixOf` "https://" -> pure ["https://"]
-    | word `isPrefixOf` "http://"  -> pure ["http://"]
-
-    | otherwise -> pure []
- where
-  initUrl :: Tool -> [String]
-  initUrl GHC   = [ "https://downloads.haskell.org/~ghc/"
-                  , "https://downloads.haskell.org/~ghcup/unofficial-bindists/ghc/"
-                  ]
-  initUrl Cabal = [ "https://downloads.haskell.org/~cabal/"
-                  , "https://downloads.haskell.org/~ghcup/unofficial-bindists/cabal/"
-                  ]
-  initUrl GHCup = [ "https://downloads.haskell.org/~ghcup/" ]
-  initUrl HLS   = [ "https://github.com/haskell/haskell-language-server/releases/download/"
-                  , "https://downloads.haskell.org/~ghcup/unofficial-bindists/haskell-language-server/"
-                  ]
-  initUrl Stack = [ "https://github.com/commercialhaskell/stack/releases/download/"
-                  , "https://downloads.haskell.org/~ghcup/unofficial-bindists/stack/"
-                  ]
-
-  completePrefix :: String -- ^ url, e.g.    'https://github.com/haskell/haskell-languag'
-                 -> String -- ^ match, e.g.  'haskell-language-server'
-                 -> String -- ^ result, e.g. 'https://github.com/haskell/haskell-language-server'
-  completePrefix url match =
-    let base = FP.takeDirectory url
-        fn   = FP.takeFileName url
-    in if fn `isPrefixOf` match then base <> "/" <> match else url
-
-  prefixMatch :: String -> [String] -> [String]
-  prefixMatch pref = filter (pref `isPrefixOf`)
-
-  fromHRef :: String -> IO [String]
-  fromHRef url = withCurl (FP.takeDirectory url) 2_000_000 $ \stdout ->
-      pure
-        . fmap (T.unpack . decUTF8Safe' . fromAttrib "href")
-        . filter isTagOpen
-        . filter (~== ("<a href>" :: String))
-        . parseTags
-        $ stdout
-
-  withCurl :: String                      -- ^ url
-           -> Int                         -- ^ delay
-           -> (ByteString -> IO [String]) -- ^ callback
-           -> IO [String]
-  withCurl url delay cb = do
-    let limit = threadDelay delay
-    race limit (executeOut "curl" ["-fL", url] Nothing) >>= \case
-      Right (CapturedProcess {_exitCode, _stdOut}) -> do
-        case _exitCode of
-          ExitSuccess ->
-            (try @_ @SomeException . cb $ _stdOut) >>= \case
-              Left _ ->  pure []
-              Right r' -> do
-                r <- try @_ @SomeException
-                  . evaluate
-                  . force
-                  $ r'
-                either (\_ -> pure []) pure r
-          ExitFailure _ -> pure []
-      Left _ -> pure []
-
-  getGithubReleases :: String
-                    -> String
-                    -> IO [String]
-  getGithubReleases owner repo = withCurl url 3_000_000 $ \stdout -> do
-    Just xs <- pure $ decode' @Array stdout
-    fmap V.toList $ forM xs $ \x -> do
-      (Object r) <- pure x
-      Just (String name) <- pure $ KM.lookup (mkval "tag_name") r
-      pure $ T.unpack name
-   where
-    url = "https://api.github.com/repos/" <> owner <> "/" <> repo <> "/releases"
-
-  getGithubAssets :: String
-                  -> String
-                  -> String
-                  -> IO [String]
-  getGithubAssets owner repo tag = withCurl url 3_000_000 $ \stdout -> do
-    Just xs <- pure $ decode' @Object stdout
-    Just (Array assets) <- pure $ KM.lookup (mkval "assets") xs
-    as <- fmap V.toList $ forM assets $ \val -> do
-      (Object asset) <- pure val
-      Just (String name) <- pure $ KM.lookup (mkval "name") asset
-      pure $ T.unpack name
-    pure as
-   where
-    url = "https://api.github.com/repos/" <> owner <> "/" <> repo <> "/releases/tags/" <> tag
-
-
-#if MIN_VERSION_aeson(2,0,0)
-  mkval = KM.fromString
-#else
-  mkval = id
-#endif
-
-
-
-
-
-
-    -----------------
-    --[ Utilities ]--
-    -----------------
-
-
-fromVersion :: ( HasLog env
-               , MonadFail m
-               , MonadReader env m
-               , HasGHCupInfo env
-               , HasDirs env
-               , MonadThrow m
-               , MonadIO m
-               , MonadCatch m
-               )
-            => Maybe ToolVersion
-            -> Tool
-            -> Excepts
-                 '[ TagNotFound
-                  , NextVerNotFound
-                  , NoToolVersionSet
-                  ] m (GHCTargetVersion, Maybe VersionInfo)
-fromVersion tv = fromVersion' (toSetToolVer tv)
-
-fromVersion' :: ( HasLog env
-                , MonadFail m
-                , MonadReader env m
-                , HasGHCupInfo env
-                , HasDirs env
-                , MonadThrow m
-                , MonadIO m
-                , MonadCatch m
-                )
-             => SetToolVersion
-             -> Tool
-             -> Excepts
-                  '[ TagNotFound
-                   , NextVerNotFound
-                   , NoToolVersionSet
-                   ] m (GHCTargetVersion, Maybe VersionInfo)
-fromVersion' SetRecommended tool = do
-  GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-  bimap mkTVer Just <$> getRecommended dls tool
-    ?? TagNotFound Recommended tool
-fromVersion' (SetToolVersion v) tool = do
-  GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-  let vi = getVersionInfo (_tvVersion v) tool dls
-  case pvp $ prettyVer (_tvVersion v) of -- need to be strict here
-    Left _ -> pure (v, vi)
-    Right pvpIn ->
-      lift (getLatestToolFor tool pvpIn dls) >>= \case
-        Just (pvp_, vi') -> do
-          v' <- lift $ pvpToVersion pvp_ ""
-          when (v' /= _tvVersion v) $ lift $ logWarn ("Assuming you meant version " <> prettyVer v')
-          pure (GHCTargetVersion (_tvTarget v) v', Just vi')
-        Nothing -> pure (v, vi)
-fromVersion' (SetToolTag Latest) tool = do
-  GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-  bimap mkTVer Just <$> getLatest dls tool ?? TagNotFound Latest tool
-fromVersion' (SetToolTag Recommended) tool = do
-  GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-  bimap mkTVer Just <$> getRecommended dls tool ?? TagNotFound Recommended tool
-fromVersion' (SetToolTag (Base pvp'')) GHC = do
-  GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-  bimap mkTVer Just <$> getLatestBaseVersion dls pvp'' ?? TagNotFound (Base pvp'') GHC
-fromVersion' SetNext tool = do
-  GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-  next <- case tool of
-    GHC -> do
-      set <- fmap _tvVersion $ ghcSet Nothing !? NoToolVersionSet tool
-      ghcs <- rights <$> lift getInstalledGHCs
-      (headMay
-        . tail
-        . dropWhile (\GHCTargetVersion {..} -> _tvVersion /= set)
-        . cycle
-        . sortBy (\x y -> compare (_tvVersion x) (_tvVersion y))
-        . filter (\GHCTargetVersion {..} -> isNothing _tvTarget)
-        $ ghcs) ?? NoToolVersionSet tool
-    Cabal -> do
-      set <- cabalSet !? NoToolVersionSet tool
-      cabals <- rights <$> lift getInstalledCabals
-      (fmap (GHCTargetVersion Nothing)
-        . headMay
-        . tail
-        . dropWhile (/= set)
-        . cycle
-        . sort
-        $ cabals) ?? NoToolVersionSet tool
-    HLS -> do
-      set <- hlsSet !? NoToolVersionSet tool
-      hlses <- rights <$> lift getInstalledHLSs
-      (fmap (GHCTargetVersion Nothing)
-        . headMay
-        . tail
-        . dropWhile (/= set)
-        . cycle
-        . sort
-        $ hlses) ?? NoToolVersionSet tool
-    Stack -> do
-      set <- stackSet !? NoToolVersionSet tool
-      stacks <- rights <$> lift getInstalledStacks
-      (fmap (GHCTargetVersion Nothing)
-        . headMay
-        . tail
-        . dropWhile (/= set)
-        . cycle
-        . sort
-        $ stacks) ?? NoToolVersionSet tool
-    GHCup -> fail "GHCup cannot be set"
-  let vi = getVersionInfo (_tvVersion next) tool dls
-  pure (next, vi)
-fromVersion' (SetToolTag t') tool =
-  throwE $ TagNotFound t' tool
-
-
-checkForUpdates :: ( MonadReader env m
-                   , HasGHCupInfo env
-                   , HasDirs env
-                   , HasPlatformReq env
-                   , MonadCatch m
-                   , HasLog env
-                   , MonadThrow m
-                   , MonadIO m
-                   , MonadFail m
-                   )
-                => m [(Tool, Version)]
-checkForUpdates = do
-  GHCupInfo { _ghcupDownloads = dls } <- getGHCupInfo
-  lInstalled <- listVersions Nothing (Just ListInstalled)
-  let latestInstalled tool = (fmap lVer . lastMay . filter (\lr -> lTool lr == tool)) lInstalled
-
-  ghcup <- forMM (getLatest dls GHCup) $ \(l, _) -> do
-    (Right ghcup_ver) <- pure $ version $ prettyPVP ghcUpVer
-    if (l > ghcup_ver) then pure $ Just (GHCup, l) else pure Nothing
-
-  otherTools <- forM [GHC, Cabal, HLS, Stack] $ \t ->
-    forMM (getLatest dls t) $ \(l, _) -> do
-      let mver = latestInstalled t
-      forMM mver $ \ver ->
-        if (l > ver) then pure $ Just (t, l) else pure Nothing
-
-  pure $ catMaybes (ghcup:otherTools)
- where
-  forMM a f = fmap join $ forM a f
--- a/app/ghcup/GHCup/OptParse/Compile.hs
+++ b/app/ghcup/GHCup/OptParse/Compile.hs
@@ -1,560 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.Compile where
-
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Utils.File
-import           GHCup.Types
-import           GHCup.Types.Optics
-import           GHCup.Utils
-import           GHCup.Utils.Logger
-import           GHCup.OptParse.Common
-import           GHCup.Utils.String.QQ
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Codec.Archive                  ( ArchiveResult )
-import           Control.Concurrent (threadDelay)
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Bifunctor
-import           Data.Functor
-import           Data.Maybe
-import           Data.Versions                  ( Version, prettyVer, version )
-import           Data.Text                      ( Text )
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Options.Applicative.Help.Pretty ( text )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import           URI.ByteString          hiding ( uriParser )
-import qualified Data.Text                     as T
-import Control.Exception.Safe (MonadMask)
-import System.FilePath (isPathSeparator)
-import Text.Read (readEither)
-
-
-
-
-    ----------------
-    --[ Commands ]--
-    ----------------
-
-
-data CompileCommand = CompileGHC GHCCompileOptions
-                    | CompileHLS HLSCompileOptions
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data GHCCompileOptions = GHCCompileOptions
-  { targetGhc    :: Either Version GitBranch
-  , bootstrapGhc :: Either Version FilePath
-  , jobs         :: Maybe Int
-  , buildConfig  :: Maybe FilePath
-  , patches      :: Maybe (Either FilePath [URI])
-  , crossTarget  :: Maybe Text
-  , addConfArgs  :: [Text]
-  , setCompile   :: Bool
-  , ovewrwiteVer :: Maybe Version
-  , buildFlavour :: Maybe String
-  , hadrian      :: Bool
-  , isolateDir   :: Maybe FilePath
-  }
-
-data HLSCompileOptions = HLSCompileOptions
-  { targetHLS    :: Either Version GitBranch
-  , jobs         :: Maybe Int
-  , setCompile   :: Bool
-  , ovewrwiteVer :: Maybe Version
-  , isolateDir   :: Maybe FilePath
-  , cabalProject :: Maybe (Either FilePath URI)
-  , cabalProjectLocal :: Maybe URI
-  , patches      :: Maybe (Either FilePath [URI])
-  , targetGHCs   :: [ToolVersion]
-  , cabalArgs    :: [Text]
-  }
-
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-compileP :: Parser CompileCommand
-compileP = subparser
-  (  command
-      "ghc"
-      (   CompileGHC
-      <$> info
-            (ghcCompileOpts <**> helper)
-            (  progDesc "Compile GHC from source"
-            <> footerDoc (Just $ text compileFooter)
-            )
-      )
-  <>  command
-      "hls"
-      (   CompileHLS
-      <$> info
-            (hlsCompileOpts <**> helper)
-            (  progDesc "Compile HLS from source"
-            <> footerDoc (Just $ text compileHLSFooter)
-            )
-      )
-  )
- where
-  compileFooter = [s|Discussion:
-  Compiles and installs the specified GHC version into
-  a self-contained "~/.ghcup/ghc/<ghcver>" directory
-  and symlinks the ghc binaries to "~/.ghcup/bin/<binary>-<ghcver>".
-
-  This also allows building a cross-compiler. Consult the documentation
-  first: <https://gitlab.haskell.org/ghc/ghc/-/wikis/building/cross-compiling#configuring-the-build>
-
-ENV variables:
-  Various toolchain variables will be passed onto the ghc build system,
-  such as: CC, LD, OBJDUMP, NM, AR, RANLIB.
-
-Examples:
-  # compile from known version
-  ghcup compile ghc -j 4 -v 8.4.2 -b 8.2.2
-  # compile from git commit/reference
-  ghcup compile ghc -j 4 -g master -b 8.2.2
-  # specify path to bootstrap ghc
-  ghcup compile ghc -j 4 -v 8.4.2 -b /usr/bin/ghc-8.2.2
-  # build cross compiler
-  ghcup compile ghc -j 4 -v 8.4.2 -b 8.2.2 -x armv7-unknown-linux-gnueabihf --config $(pwd)/build.mk -- --enable-unregisterised|]
-
-  compileHLSFooter = [s|Discussion:
-  Compiles and installs the specified HLS version.
-  The last argument is a list of GHC versions to compile for.
-  These need to be available in PATH prior to compilation.
-
-Examples:
-  # compile 1.4.0 for ghc 8.10.5 and 8.10.7
-  ghcup compile hls -v 1.4.0 -j 12 --ghc 8.10.5 --ghc 8.10.7
-  # compile from master for ghc 8.10.7, linking everything dynamically
-  ghcup compile hls -g master -j 12 --ghc 8.10.7 -- --ghc-options='-dynamic'|]
-
-
-ghcCompileOpts :: Parser GHCCompileOptions
-ghcCompileOpts =
-  GHCCompileOptions
-    <$> ((Left <$> option
-          (eitherReader
-            (first (const "Not a valid version") . version . T.pack)
-          )
-          (short 'v' <> long "version" <> metavar "VERSION" <> help
-            "The tool version to compile"
-            <> (completer $ versionCompleter Nothing GHC)
-          )
-          ) <|>
-          (Right <$> (GitBranch <$> option
-          str
-          (short 'g' <> long "git-ref" <> metavar "GIT_REFERENCE" <> help
-            "The git commit/branch/ref to build from"
-          ) <*>
-          optional (option str (
-            short 'r' <> long "repository" <> metavar "GIT_REPOSITORY" <> help "The git repository to build from (defaults to GHC upstream)"
-            <> completer (gitFileUri ["https://gitlab.haskell.org/ghc/ghc.git"])
-            ))
-          )))
-    <*> option
-          (eitherReader
-            (\x ->
-              (bimap (const "Not a valid version") Left . version . T.pack $ x) <|> (if isPathSeparator (head x) then pure $ Right x else Left "Not an absolute Path")
-            )
-          )
-          (  short 'b'
-          <> long "bootstrap-ghc"
-          <> metavar "BOOTSTRAP_GHC"
-          <> help
-               "The GHC version (or full path) to bootstrap with (must be installed)"
-          <> (completer $ versionCompleter Nothing GHC)
-          )
-    <*> optional
-          (option
-            (eitherReader (readEither @Int))
-            (short 'j' <> long "jobs" <> metavar "JOBS" <> help
-              "How many jobs to use for make"
-              <> (completer $ listCompleter $ fmap show ([1..12] :: [Int]))
-            )
-          )
-    <*> optional
-          (option
-            str
-            (short 'c' <> long "config" <> metavar "CONFIG" <> help
-              "Absolute path to build config file"
-             <> completer (bashCompleter "file")
-            )
-          )
-    <*> (optional
-          (
-            (fmap Right $ many $ option
-              (eitherReader uriParser)
-              (long "patch" <> metavar "PATCH_URI" <> help
-                "URI to a patch (https/http/file)"
-               <> completer fileUri
-              )
-            )
-            <|>
-            (fmap Left $ option
-              str
-              (short 'p' <> long "patchdir" <> metavar "PATCH_DIR" <> help
-                "Absolute path to patch directory (applies all .patch and .diff files in order using -p1. This order is determined by a quilt series file if it exists, or the patches are lexicographically ordered)"
-               <> completer (bashCompleter "directory")
-              )
-            )
-          )
-        )
-    <*> optional
-          (option
-            str
-            (short 'x' <> long "cross-target" <> metavar "CROSS_TARGET" <> help
-              "Build cross-compiler for this platform"
-            )
-          )
-    <*> many (argument str (metavar "CONFIGURE_ARGS" <> help "Additional arguments to configure, prefix with '-- ' (longopts)"))
-    <*> fmap (fromMaybe False) (invertableSwitch "set" Nothing False (help "Set as active version after install"))
-    <*> optional
-          (option
-            (eitherReader
-              (first (const "Not a valid version") . version . T.pack)
-            )
-            (short 'o' <> long "overwrite-version" <> metavar "OVERWRITE_VERSION" <> help
-              "Allows to overwrite the finally installed VERSION with a different one, e.g. when you build 8.10.4 with your own patches, you might want to set this to '8.10.4-p1'"
-            <> (completer $ versionCompleter Nothing GHC)
-            )
-          )
-    <*> optional
-          (option
-            str
-            (short 'f' <> long "flavour" <> metavar "BUILD_FLAVOUR" <> help
-              "Set the compile build flavour (this value depends on the build system type: 'make' vs 'hadrian')"
-            )
-          )
-    <*> switch
-          (long "hadrian" <> help "Use the hadrian build system instead of make (only git versions seem to be properly supported atm)"
-          )
-    <*> optional
-          (option
-            (eitherReader isolateParser)
-            (  short 'i'
-            <> long "isolate"
-            <> metavar "DIR"
-            <> help "install in an isolated directory instead of the default one, no symlinks to this installation will be made"
-            <> completer (bashCompleter "directory")
-            )
-           )
-
-hlsCompileOpts :: Parser HLSCompileOptions
-hlsCompileOpts =
-  HLSCompileOptions
-    <$> ((Left <$> option
-          (eitherReader
-            (first (const "Not a valid version") . version . T.pack)
-          )
-          (short 'v' <> long "version" <> metavar "VERSION" <> help
-            "The tool version to compile"
-            <> (completer $ versionCompleter Nothing HLS)
-          )
-          ) <|>
-          (Right <$> (GitBranch <$> option
-          str
-          (short 'g' <> long "git-ref" <> metavar "GIT_REFERENCE" <> help
-            "The git commit/branch/ref to build from"
-          ) <*>
-          optional (option str (short 'r' <> long "repository" <> metavar "GIT_REPOSITORY" <> help "The git repository to build from (defaults to HLS upstream)"
-            <> completer (gitFileUri ["https://github.com/haskell/haskell-language-server.git"])
-          ))
-          )))
-    <*> optional
-          (option
-            (eitherReader (readEither @Int))
-            (short 'j' <> long "jobs" <> metavar "JOBS" <> help
-              "How many jobs to use for make"
-              <> (completer $ listCompleter $ fmap show ([1..12] :: [Int]))
-            )
-          )
-    <*> fmap (fromMaybe True) (invertableSwitch "set" Nothing True (help "Don't set as active version after install"))
-    <*> optional
-          (option
-            (eitherReader
-              (first (const "Not a valid version") . version . T.pack)
-            )
-            (short 'o' <> long "overwrite-version" <> metavar "OVERWRITE_VERSION" <> help
-              "Allows to overwrite the finally installed VERSION with a different one, e.g. when you build 8.10.4 with your own patches, you might want to set this to '8.10.4-p1'"
-            <> (completer $ versionCompleter Nothing HLS)
-            )
-          )
-    <*> optional
-          (option
-            (eitherReader isolateParser)
-            (  short 'i'
-            <> long "isolate"
-            <> metavar "DIR"
-            <> help "install in an isolated directory instead of the default one, no symlinks to this installation will be made"
-            <> completer (bashCompleter "directory")
-            )
-           )
-    <*> optional
-          (option
-            ((fmap Right $ eitherReader uriParser) <|> (fmap Left str))
-            (long "cabal-project" <> metavar "CABAL_PROJECT" <> help
-              "If relative filepath, specifies the path to cabal.project inside the unpacked HLS tarball/checkout. Otherwise expects a full URI with https/http/file scheme."
-              <> completer fileUri
-            )
-          )
-    <*> optional
-          (option
-            (eitherReader uriParser)
-            (long "cabal-project-local" <> metavar "CABAL_PROJECT_LOCAL" <> help
-              "URI (https/http/file) to a cabal.project.local to be used for the build. Will be copied over."
-              <> completer fileUri
-            )
-          )
-    <*> (optional
-          (
-            (fmap Right $ many $ option
-              (eitherReader uriParser)
-              (long "patch" <> metavar "PATCH_URI" <> help
-                "URI to a patch (https/http/file)"
-              <> completer fileUri
-              )
-            )
-            <|>
-            (fmap Left $ option
-              str
-              (short 'p' <> long "patchdir" <> metavar "PATCH_DIR" <> help
-                "Absolute path to patch directory (applies all .patch and .diff files in order using -p1)"
-              <> completer (bashCompleter "directory")
-              )
-            )
-          )
-        )
-    <*> some (
-          option (eitherReader toolVersionEither)
-            (  long "ghc" <> metavar "GHC_VERSION|TAG" <> help "For which GHC version to compile for (can be specified multiple times)"
-            <> completer (tagCompleter GHC [])
-            <> completer (versionCompleter Nothing GHC))
-        )
-    <*> many (argument str (metavar "CABAL_ARGS" <> help "Additional arguments to cabal install, prefix with '-- ' (longopts)"))
-
-
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type GHCEffects = '[ AlreadyInstalled
-                  , BuildFailed
-                  , DigestError
-                  , GPGError
-                  , DownloadFailed
-                  , GHCupSetError
-                  , NoDownload
-                  , NotFoundInPATH
-                  , PatchFailed
-                  , UnknownArchive
-                  , TarDirDoesNotExist
-                  , NotInstalled
-                  , DirNotEmpty
-                  , ArchiveResult
-                  , FileDoesNotExistError
-                  , HadrianNotFound
-                  , InvalidBuildConfig
-                  , ProcessError
-                  , CopyError
-                  , BuildFailed
-                  ]
-type HLSEffects = '[ AlreadyInstalled
-                  , BuildFailed
-                  , DigestError
-                  , GPGError
-                  , DownloadFailed
-                  , GHCupSetError
-                  , NoDownload
-                  , NotFoundInPATH
-                  , PatchFailed
-                  , UnknownArchive
-                  , TarDirDoesNotExist
-                  , TagNotFound
-                  , NextVerNotFound
-                  , NoToolVersionSet
-                  , NotInstalled
-                  , DirNotEmpty
-                  , ArchiveResult
-                  ]
-
-
-
-runCompileGHC :: (MonadUnliftIO m, MonadIO m)
-              => (ReaderT AppState m (VEither GHCEffects a) -> m (VEither GHCEffects a))
-              -> Excepts GHCEffects (ResourceT (ReaderT AppState m)) a
-              -> m (VEither GHCEffects a)
-runCompileGHC runAppState =
-        runAppState
-        . runResourceT
-        . runE
-          @GHCEffects
-
-runCompileHLS :: (MonadUnliftIO m, MonadIO m)
-              => (ReaderT AppState m (VEither HLSEffects a) -> m (VEither HLSEffects a))
-              -> Excepts HLSEffects (ResourceT (ReaderT AppState m)) a
-              -> m (VEither HLSEffects a)
-runCompileHLS runAppState =
-        runAppState
-        . runResourceT
-        . runE
-          @HLSEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-compile :: ( Monad m
-           , MonadMask m
-           , MonadUnliftIO m
-           , MonadFail m
-           )
-      => CompileCommand
-      -> Settings
-      -> Dirs
-      -> (forall eff a . ReaderT AppState m (VEither eff a) -> m (VEither eff a))
-      -> (ReaderT LeanAppState m () -> m ())
-      -> m ExitCode
-compile compileCommand settings Dirs{..} runAppState runLogger = do
-  case compileCommand of
-    (CompileHLS HLSCompileOptions { .. }) -> do
-      runCompileHLS runAppState (do
-        case targetHLS of
-          Left targetVer -> do
-            GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-            let vi = getVersionInfo targetVer HLS dls
-            forM_ (_viPreCompile =<< vi) $ \msg -> do
-              lift $ logInfo msg
-              lift $ logInfo
-                "...waiting for 5 seconds, you can still abort..."
-              liftIO $ threadDelay 5000000 -- for compilation, give the user a sec to intervene
-          Right _ -> pure ()
-        ghcs <- liftE $ forM targetGHCs (\ghc -> fmap (_tvVersion . fst) . fromVersion (Just ghc) $ GHC)
-        targetVer <- liftE $ compileHLS
-                    targetHLS
-                    ghcs
-                    jobs
-                    ovewrwiteVer
-                    isolateDir
-                    cabalProject
-                    cabalProjectLocal
-                    patches
-                    cabalArgs
-        GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-        let vi = getVersionInfo targetVer HLS dls
-        when setCompile $ void $ liftE $
-          setHLS targetVer SetHLSOnly Nothing
-        pure (vi, targetVer)
-        )
-        >>= \case
-              VRight (vi, tv) -> do
-                runLogger $ logInfo
-                  "HLS successfully compiled and installed"
-                forM_ (_viPostInstall =<< vi) $ \msg ->
-                  runLogger $ logInfo msg
-                liftIO $ putStr (T.unpack $ prettyVer tv)
-                pure ExitSuccess
-              VLeft err@(V (BuildFailed tmpdir _)) -> do
-                case keepDirs settings of
-                  Never -> runLogger $ logError $ T.pack $ prettyShow err
-                  _ -> runLogger (logError $ T.pack (prettyShow err) <> "\n" <>
-                        "Check the logs at " <> T.pack logsDir <> " and the build directory "
-                        <> T.pack tmpdir <> " for more clues." <> "\n" <>
-                        "Make sure to clean up " <> T.pack tmpdir <> " afterwards.")
-                pure $ ExitFailure 9
-              VLeft e -> do
-                runLogger $ logError $ T.pack $ prettyShow e
-                pure $ ExitFailure 9
-    (CompileGHC GHCCompileOptions { hadrian = True, crossTarget = Just _ }) -> do
-      runLogger $ logError "Hadrian cross compile support is not yet implemented!"
-      pure $ ExitFailure 9
-    (CompileGHC GHCCompileOptions {..}) ->
-      runCompileGHC runAppState (do
-        case targetGhc of
-          Left targetVer -> do
-            GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-            let vi = getVersionInfo targetVer GHC dls
-            forM_ (_viPreCompile =<< vi) $ \msg -> do
-              lift $ logInfo msg
-              lift $ logInfo
-                "...waiting for 5 seconds, you can still abort..."
-              liftIO $ threadDelay 5000000 -- for compilation, give the user a sec to intervene
-          Right _ -> pure ()
-        targetVer <- liftE $ compileGHC
-                    (first (GHCTargetVersion crossTarget) targetGhc)
-                    ovewrwiteVer
-                    bootstrapGhc
-                    jobs
-                    buildConfig
-                    patches
-                    addConfArgs
-                    buildFlavour
-                    hadrian
-                    isolateDir
-        GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-        let vi = getVersionInfo (_tvVersion targetVer) GHC dls
-        when setCompile $ void $ liftE $
-          setGHC targetVer SetGHCOnly Nothing
-        pure (vi, targetVer)
-        )
-        >>= \case
-              VRight (vi, tv) -> do
-                runLogger $ logInfo
-                  "GHC successfully compiled and installed"
-                forM_ (_viPostInstall =<< vi) $ \msg ->
-                  runLogger $ logInfo msg
-                liftIO $ putStr (T.unpack $ tVerToText tv)
-                pure ExitSuccess
-              VLeft (V (AlreadyInstalled _ v)) -> do
-                runLogger $ logWarn $
-                  "GHC ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup install ghc --force " <> prettyVer v <> "'"
-                pure ExitSuccess
-              VLeft (V (DirNotEmpty fp)) -> do
-                runLogger $ logWarn $
-                  "Install directory " <> T.pack fp <> " is not empty. Use 'ghcup install ghc --isolate " <> T.pack fp <> " --force ..." <> "' to install regardless."
-                pure $ ExitFailure 3
-              VLeft err@(V (BuildFailed tmpdir _)) -> do
-                case keepDirs settings of
-                  Never -> runLogger $ logError $ T.pack $ prettyShow err
-                  _ -> runLogger (logError $ T.pack (prettyShow err) <> "\n" <>
-                        "Check the logs at " <> T.pack logsDir <> " and the build directory "
-                        <> T.pack tmpdir <> " for more clues." <> "\n" <>
-                        "Make sure to clean up " <> T.pack tmpdir <> " afterwards.")
-                pure $ ExitFailure 9
-              VLeft e -> do
-                runLogger $ logError $ T.pack $ prettyShow e
-                pure $ ExitFailure 9
--- a/app/ghcup/GHCup/OptParse/Config.hs
+++ b/app/ghcup/GHCup/OptParse/Config.hs
@@ -1,204 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-{-# LANGUAGE ExplicitForAll #-}
-
-module GHCup.OptParse.Config where
-
-
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Utils
-import           GHCup.Utils.Prelude
-import           GHCup.Utils.Logger
-import           GHCup.Utils.String.QQ
-import           GHCup.OptParse.Common
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Exception              ( displayException )
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Functor
-import           Data.Maybe
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style, ParseError )
-import           Options.Applicative.Help.Pretty ( text )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           URI.ByteString          hiding ( uriParser )
-
-import qualified Data.Text                     as T
-import qualified Data.ByteString.UTF8          as UTF8
-import qualified Data.Yaml.Aeson               as Y
-import Control.Exception.Safe (MonadMask)
-
-
-
-
-    ----------------
-    --[ Commands ]--
-    ----------------
-
-
-data ConfigCommand
-  = ShowConfig
-  | SetConfig String (Maybe String)
-  | InitConfig
-  | AddReleaseChannel URI
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-configP :: Parser ConfigCommand
-configP = subparser
-      (  command "init" initP
-      <> command "set"  setP -- [set] KEY VALUE at help lhs
-      <> command "show" showP
-      <> command "add-release-channel" addP
-      )
-    <|> argsP -- add show for a single option
-    <|> pure ShowConfig
- where
-  initP = info (pure InitConfig) (progDesc "Write default config to ~/.ghcup/config.yaml")
-  showP = info (pure ShowConfig) (progDesc "Show current config (default)")
-  setP  = info argsP (progDesc "Set config KEY to VALUE (or specify as single json value)" <> footerDoc (Just $ text configSetFooter))
-  argsP = SetConfig <$> argument str (metavar "<JSON_VALUE | YAML_KEY>") <*> optional (argument str (metavar "YAML_VALUE"))
-  addP  = info (AddReleaseChannel <$> argument (eitherReader uriParser) (metavar "URI" <> completer fileUri))
-    (progDesc "Add a release channel from a URI")
-
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-configFooter :: String
-configFooter = [s|Examples:
-
-  # show current config
-  ghcup config
-
-  # initialize config
-  ghcup config init
-
-  # set <key> <value> configuration pair
-  ghcup config set <key> <value>|]
-
-
-configSetFooter :: String
-configSetFooter = [s|Examples:
-  # disable caching
-  ghcup config set cache false
-
-  # switch downloader to wget
-  ghcup config set downloader Wget
-
-  # set mirror for ghcup metadata
-  ghcup config set '{url-source: { OwnSource: "<url>"}}'|]
-
-
-
-    -----------------
-    --[ Utilities ]--
-    -----------------
-
-
-formatConfig :: UserSettings -> String
-formatConfig = UTF8.toString . Y.encode
-
-
-updateSettings :: UserSettings -> Settings -> Settings
-updateSettings UserSettings{..} Settings{..} =
-   let cache'      = fromMaybe cache uCache
-       metaCache'  = fromMaybe metaCache uMetaCache
-       noVerify'   = fromMaybe noVerify uNoVerify
-       keepDirs'   = fromMaybe keepDirs uKeepDirs
-       downloader' = fromMaybe downloader uDownloader
-       verbose'    = fromMaybe verbose uVerbose
-       urlSource'  = fromMaybe urlSource uUrlSource
-       noNetwork'  = fromMaybe noNetwork uNoNetwork
-       gpgSetting' = fromMaybe gpgSetting uGPGSetting
-   in Settings cache' metaCache' noVerify' keepDirs' downloader' verbose' urlSource' noNetwork' gpgSetting' noColor
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-config :: forall m. ( Monad m
-          , MonadMask m
-          , MonadUnliftIO m
-          , MonadFail m
-          )
-     => ConfigCommand
-     -> Settings
-     -> KeyBindings
-     -> (ReaderT LeanAppState m () -> m ())
-     -> m ExitCode
-config configCommand settings keybindings runLogger = case configCommand of
-  InitConfig -> do
-    path <- getConfigFilePath
-    liftIO $ writeFile path $ formatConfig $ fromSettings settings (Just keybindings)
-    runLogger $ logDebug $ "config.yaml initialized at " <> T.pack path
-    pure ExitSuccess
-
-  ShowConfig -> do
-    liftIO $ putStrLn $ formatConfig $ fromSettings settings (Just keybindings)
-    pure ExitSuccess
-
-  (SetConfig k mv) -> do
-    r <- runE @'[JSONError, ParseError] $ do
-      case mv of
-        Just "" ->
-          throwE $ ParseError "Empty values are not allowed"
-        Nothing -> do
-          usersettings <- decodeSettings k
-          lift $ doConfig usersettings
-          pure ()
-        Just v -> do
-          usersettings <- decodeSettings (k <> ": " <> v <> "\n")
-          lift $ doConfig usersettings
-          pure ()
-    case r of
-      VRight _ -> pure ExitSuccess
-      VLeft (V (JSONDecodeError e)) -> do
-        runLogger $ logError $ "Error decoding config: " <> T.pack e
-        pure $ ExitFailure 65
-      VLeft _ -> pure $ ExitFailure 65
-
-  AddReleaseChannel uri -> do
-    case urlSource settings of
-      AddSource xs -> do
-        doConfig (defaultUserSettings { uUrlSource = Just $ AddSource (xs <> [Right uri]) })
-        pure ExitSuccess
-      _ -> do
-        doConfig (defaultUserSettings { uUrlSource = Just $ AddSource [Right uri] })
-        pure ExitSuccess
-
- where
-  doConfig :: MonadIO m => UserSettings -> m ()
-  doConfig usersettings = do
-    let settings' = updateSettings usersettings settings
-    path <- liftIO getConfigFilePath
-    liftIO $ writeFile path $ formatConfig $ fromSettings settings' (Just keybindings)
-    runLogger $ logDebug $ T.pack $ show settings'
-    pure ()
-
-  decodeSettings = lE' (JSONDecodeError . displayException) . Y.decodeEither' . UTF8.fromString
--- a/app/ghcup/GHCup/OptParse/DInfo.hs
+++ b/app/ghcup/GHCup/OptParse/DInfo.hs
@@ -1,119 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.DInfo where
-
-
-
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Version
-import           GHCup.Types
-import           GHCup.Utils.Prelude
-import           GHCup.Utils.Dirs
-import           GHCup.Utils.Logger
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Functor
-import           Data.Maybe
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import Control.Exception.Safe (MonadMask)
-import GHCup.Utils.File
-import Language.Haskell.TH
-
-
-
-    -----------------
-    --[ Utilities ]--
-    -----------------
-
-
-describe_result :: String
-describe_result = $( LitE . StringL <$>
-                     runIO (do
-                             CapturedProcess{..} <-  do
-                              dirs <- liftIO getAllDirs
-                              let settings = AppState (defaultSettings { noNetwork = True })
-                                               dirs
-                                               defaultKeyBindings
-                              flip runReaderT settings $ executeOut "git" ["describe"] Nothing
-                             case _exitCode of
-                               ExitSuccess   -> pure . T.unpack . decUTF8Safe' $ _stdOut
-                               ExitFailure _ -> pure numericVer
-                     )
-                   )
-
-
-prettyDebugInfo :: DebugInfo -> String
-prettyDebugInfo DebugInfo {..} = "Debug Info" <> "\n" <>
-  "==========" <> "\n" <>
-  "GHCup base dir: " <> diBaseDir <> "\n" <>
-  "GHCup bin dir: " <> diBinDir <> "\n" <>
-  "GHCup GHC directory: " <> diGHCDir <> "\n" <>
-  "GHCup cache directory: " <> diCacheDir <> "\n" <>
-  "Architecture: " <> prettyShow diArch <> "\n" <>
-  "Platform: " <> prettyShow diPlatform <> "\n" <>
-  "Version: " <> describe_result
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type DInfoEffects = '[ NoCompatiblePlatform , NoCompatibleArch , DistroNotFound ]
-
-runDebugInfo :: (ReaderT env m (VEither DInfoEffects a) -> m (VEither DInfoEffects a))
-             -> Excepts DInfoEffects (ReaderT env m) a
-             -> m (VEither DInfoEffects a)
-runDebugInfo runAppState =
-        runAppState
-        . runE
-          @DInfoEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-dinfo :: ( Monad m
-         , MonadMask m
-         , MonadUnliftIO m
-         , MonadFail m
-         , Alternative m
-         )
-      => (ReaderT AppState m (VEither DInfoEffects DebugInfo)
-          -> m (VEither DInfoEffects DebugInfo))
-      -> (ReaderT LeanAppState m () -> m ())
-      -> m ExitCode
-dinfo runAppState runLogger = do
-  runDebugInfo runAppState (liftE getDebugInfo)
-    >>= \case
-          VRight di -> do
-            liftIO $ putStrLn $ prettyDebugInfo di
-            pure ExitSuccess
-          VLeft e -> do
-            runLogger $ logError $ T.pack $ prettyShow e
-            pure $ ExitFailure 8
--- a/app/ghcup/GHCup/OptParse/GC.hs
+++ b/app/ghcup/GHCup/OptParse/GC.hs
@@ -1,143 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.GC where
-
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Utils.Logger
-import           GHCup.Utils.String.QQ
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Functor
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import Control.Exception.Safe (MonadMask)
-
-
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data GCOptions = GCOptions
-  { gcOldGHC :: Bool
-  , gcProfilingLibs :: Bool
-  , gcShareDir :: Bool
-  , gcHLSNoGHC :: Bool
-  , gcCache :: Bool
-  , gcTmp :: Bool
-  }
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-gcP :: Parser GCOptions
-gcP =
-  GCOptions
-  <$> 
-    switch
-      (short 'o' <> long "ghc-old" <> help "Remove GHC versions marked as 'old'")
-  <*> 
-    switch
-      (short 'p' <> long "profiling-libs" <> help "Remove profiling libs of GHC versions")
-  <*> 
-    switch
-      (short 's' <> long "share-dir" <> help "Remove GHC share directories (documentation)")
-  <*> 
-    switch
-      (short 'h' <> long "hls-no-ghc" <> help "Remove HLS versions that don't have a corresponding installed GHC version")
-  <*> 
-    switch
-      (short 'c' <> long "cache" <> help "GC the GHCup cache")
-  <*> 
-    switch
-      (short 't' <> long "tmpdirs" <> help "Remove tmpdir leftovers")
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-gcFooter :: String
-gcFooter = [s|Discussion:
-  Performs garbage collection. If no switches are specified, does nothing.|]
-
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type GCEffects = '[ NotInstalled ]
-
-
-runGC :: MonadUnliftIO m
-      => (ReaderT AppState m (VEither GCEffects a) -> m (VEither GCEffects a))
-      -> Excepts GCEffects (ResourceT (ReaderT AppState m)) a
-      -> m (VEither GCEffects a)
-runGC runAppState =
-  runAppState
-    . runResourceT
-    . runE
-      @GCEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-gc :: ( Monad m
-      , MonadMask m
-      , MonadUnliftIO m
-      , MonadFail m
-      )
-   => GCOptions
-   -> (forall a. ReaderT AppState m (VEither GCEffects a) -> m (VEither GCEffects a))
-   -> (ReaderT LeanAppState m () -> m ())
-   -> m ExitCode
-gc GCOptions{..} runAppState runLogger = runGC runAppState (do
-  when gcOldGHC rmOldGHC
-  lift $ when gcProfilingLibs rmProfilingLibs
-  lift $ when gcShareDir rmShareDir
-  liftE $ when gcHLSNoGHC rmHLSNoGHC
-  lift $ when gcCache rmCache
-  lift $ when gcTmp rmTmp
-   ) >>= \case
-            VRight _ -> do
-                  pure ExitSuccess
-            VLeft e -> do
-              runLogger $ logError $ T.pack $ prettyShow e
-              pure $ ExitFailure 27
--- a/app/ghcup/GHCup/OptParse/Install.hs
+++ b/app/ghcup/GHCup/OptParse/Install.hs
@@ -1,623 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE ViewPatterns      #-}
-
-module GHCup.OptParse.Install where
-
-
-
-
-import           GHCup.OptParse.Common
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Utils.Logger
-import           GHCup.Utils.String.QQ
-
-import           Codec.Archive
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Either
-import           Data.Functor
-import           Data.Maybe
-import           Data.Versions           hiding ( str )
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Options.Applicative.Help.Pretty ( text )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-import           URI.ByteString          hiding ( uriParser )
-
-import qualified Data.Text                     as T
-
-
-
-
-    ----------------
-    --[ Commands ]--
-    ----------------
-
-
-data InstallCommand = InstallGHC InstallOptions
-                    | InstallCabal InstallOptions
-                    | InstallHLS InstallOptions
-                    | InstallStack InstallOptions
-
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data InstallOptions = InstallOptions
-  { instVer      :: Maybe ToolVersion
-  , instPlatform :: Maybe PlatformRequest
-  , instBindist  :: Maybe URI
-  , instSet      :: Bool
-  , isolateDir   :: Maybe FilePath
-  , forceInstall :: Bool
-  }
-
-
-
-    ---------------
-    --[ Footers ]--
-    ---------------
-
-installCabalFooter :: String
-installCabalFooter = [s|Discussion:
-  Installs the specified cabal-install version (or a recommended default one)
-  into "~/.ghcup/bin", so it can be overwritten by later
-  "cabal install cabal-install", which installs into "~/.cabal/bin" by
-  default. Make sure to set up your PATH appropriately, so the cabal
-  installation takes precedence.|]
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-installParser :: Parser (Either InstallCommand InstallOptions)
-installParser =
-  (Left <$> subparser
-      (  command
-          "ghc"
-          (   InstallGHC
-          <$> info
-                (installOpts (Just GHC) <**> helper)
-                (  progDesc "Install GHC"
-                <> footerDoc (Just $ text installGHCFooter)
-                )
-          )
-      <> command
-           "cabal"
-           (   InstallCabal
-           <$> info
-                 (installOpts (Just Cabal) <**> helper)
-                 (  progDesc "Install Cabal"
-                 <> footerDoc (Just $ text installCabalFooter)
-                 )
-           )
-      <> command
-           "hls"
-           (   InstallHLS
-           <$> info
-                 (installOpts (Just HLS) <**> helper)
-                 (  progDesc "Install haskell-language-server"
-                 <> footerDoc (Just $ text installHLSFooter)
-                 )
-           )
-      <> command
-           "stack"
-           (   InstallStack
-           <$> info
-                 (installOpts (Just Stack) <**> helper)
-                 (  progDesc "Install stack"
-                 <> footerDoc (Just $ text installStackFooter)
-                 )
-           )
-      )
-    )
-    <|> (Right <$> installOpts Nothing)
- where
-  installHLSFooter :: String
-  installHLSFooter = [s|Discussion:
-  Installs haskell-language-server binaries and wrapper
-  into "~/.ghcup/bin"
-
-Examples:
-  # install recommended HLS
-  ghcup install hls|]
-
-  installStackFooter :: String
-  installStackFooter = [s|Discussion:
-  Installs stack binaries into "~/.ghcup/bin"
-
-Examples:
-  # install recommended Stack
-  ghcup install stack|]
-
-  installGHCFooter :: String
-  installGHCFooter = [s|Discussion:
-  Installs the specified GHC version (or a recommended default one) into
-  a self-contained "~/.ghcup/ghc/<ghcver>" directory
-  and symlinks the ghc binaries to "~/.ghcup/bin/<binary>-<ghcver>".
-
-Examples:
-  # install recommended GHC
-  ghcup install ghc
-
-  # install latest GHC
-  ghcup install ghc latest
-
-  # install GHC 8.10.2
-  ghcup install ghc 8.10.2
-
-  # install GHC head fedora bindist
-  ghcup install ghc -u https://gitlab.haskell.org/api/v4/projects/1/jobs/artifacts/master/raw/ghc-x86_64-fedora27-linux.tar.xz?job=validate-x86_64-linux-fedora27 head|]
-
-
-installOpts :: Maybe Tool -> Parser InstallOptions
-installOpts tool =
-  (\p (u, v) b is f -> InstallOptions v p u b is f)
-    <$> optional
-          (option
-            (eitherReader platformParser)
-            (  short 'p'
-            <> long "platform"
-            <> metavar "PLATFORM"
-            <> help
-                 "Override for platform (triple matching ghc tarball names), e.g. x86_64-fedora27-linux"
-            )
-          )
-    <*> (   (   (,)
-            <$> optional
-                  (option
-                    (eitherReader uriParser)
-                    (short 'u' <> long "url" <> metavar "BINDIST_URL" <> help
-                      "Install the specified version from this bindist"
-                      <> completer (toolDlCompleter (fromMaybe GHC tool))
-                    )
-                  )
-            <*> (Just <$> toolVersionArgument Nothing tool)
-            )
-        <|> pure (Nothing, Nothing)
-        )
-    <*> fmap (fromMaybe setDefault) (invertableSwitch "set" Nothing setDefault
-      (help $ if not setDefault then "Set as active version after install" else "Don't set as active version after install"))
-    <*> optional
-          (option
-           (eitherReader isolateParser)
-           (  short 'i'
-           <> long "isolate"
-           <> metavar "DIR"
-           <> help "install in an isolated dir instead of the default one"
-           <> completer (bashCompleter "directory")
-           )
-          )
-    <*> switch
-          (short 'f' <> long "force" <> help "Force install")
- where
-  setDefault = case tool of
-    Nothing  -> False
-    Just GHC -> False
-    Just _   -> True
-          
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-installToolFooter :: String
-installToolFooter = [s|Discussion:
-  Installs GHC or cabal. When no command is given, installs GHC
-  with the specified version/tag.
-  It is recommended to always specify a subcommand (ghc/cabal/hls/stack).|]
-
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-type InstallEffects = '[ AlreadyInstalled
-                       , UnknownArchive
-                       , ArchiveResult
-                       , FileDoesNotExistError
-                       , CopyError
-                       , NotInstalled
-                       , DirNotEmpty
-                       , NoDownload
-                       , NotInstalled
-                       , BuildFailed
-                       , TagNotFound
-                       , DigestError
-                       , GPGError
-                       , DownloadFailed
-                       , TarDirDoesNotExist
-                       , NextVerNotFound
-                       , NoToolVersionSet
-                       , FileAlreadyExistsError
-                       , ProcessError
-
-                       , (AlreadyInstalled, ())
-                       , (UnknownArchive, ())
-                       , (ArchiveResult, ())
-                       , (FileDoesNotExistError, ())
-                       , (CopyError, ())
-                       , (NotInstalled, ())
-                       , (DirNotEmpty, ())
-                       , (NoDownload, ())
-                       , (NotInstalled, ())
-                       , (BuildFailed, ())
-                       , (TagNotFound, ())
-                       , (DigestError, ())
-                       , (GPGError, ())
-                       , (DownloadFailed, ())
-                       , (TarDirDoesNotExist, ())
-                       , (NextVerNotFound, ())
-                       , (NoToolVersionSet, ())
-                       , (FileAlreadyExistsError, ())
-                       , (ProcessError, ())
-
-                       , (AlreadyInstalled, NotInstalled)
-                       , (UnknownArchive, NotInstalled)
-                       , (ArchiveResult, NotInstalled)
-                       , (FileDoesNotExistError, NotInstalled)
-                       , (CopyError, NotInstalled)
-                       , (NotInstalled, NotInstalled)
-                       , (DirNotEmpty, NotInstalled)
-                       , (NoDownload, NotInstalled)
-                       , (NotInstalled, NotInstalled)
-                       , (BuildFailed, NotInstalled)
-                       , (TagNotFound, NotInstalled)
-                       , (DigestError, NotInstalled)
-                       , (GPGError, NotInstalled)
-                       , (DownloadFailed, NotInstalled)
-                       , (TarDirDoesNotExist, NotInstalled)
-                       , (NextVerNotFound, NotInstalled)
-                       , (NoToolVersionSet, NotInstalled)
-                       , (FileAlreadyExistsError, NotInstalled)
-                       , (ProcessError, NotInstalled)
-
-                       , ((), NotInstalled)
-                       ]
-
-
-runInstTool :: AppState
-            -> Maybe PlatformRequest
-            -> Excepts InstallEffects (ResourceT (ReaderT AppState IO)) a
-            -> IO (VEither InstallEffects a)
-runInstTool appstate' mInstPlatform =
-  flip runReaderT (maybe appstate' (\x -> appstate'{ pfreq = x } :: AppState) mInstPlatform)
-  . runResourceT
-  . runE
-    @InstallEffects
-
-
-type InstallGHCEffects = '[ TagNotFound
-                          , NextVerNotFound
-                          , NoToolVersionSet
-                          , BuildFailed
-                          , DirNotEmpty
-                          , AlreadyInstalled
-
-                          , (AlreadyInstalled, NotInstalled)
-                          , (UnknownArchive, NotInstalled)
-                          , (ArchiveResult, NotInstalled)
-                          , (FileDoesNotExistError, NotInstalled)
-                          , (CopyError, NotInstalled)
-                          , (NotInstalled, NotInstalled)
-                          , (DirNotEmpty, NotInstalled)
-                          , (NoDownload, NotInstalled)
-                          , (BuildFailed, NotInstalled)
-                          , (TagNotFound, NotInstalled)
-                          , (DigestError, NotInstalled)
-                          , (GPGError, NotInstalled)
-                          , (DownloadFailed, NotInstalled)
-                          , (TarDirDoesNotExist, NotInstalled)
-                          , (NextVerNotFound, NotInstalled)
-                          , (NoToolVersionSet, NotInstalled)
-                          , (FileAlreadyExistsError, NotInstalled)
-                          , (ProcessError, NotInstalled)
-
-                          , (AlreadyInstalled, ())
-                          , (UnknownArchive, ())
-                          , (ArchiveResult, ())
-                          , (FileDoesNotExistError, ())
-                          , (CopyError, ())
-                          , (NotInstalled, ())
-                          , (DirNotEmpty, ())
-                          , (NoDownload, ())
-                          , (BuildFailed, ())
-                          , (TagNotFound, ())
-                          , (DigestError, ())
-                          , (GPGError, ())
-                          , (DownloadFailed, ())
-                          , (TarDirDoesNotExist, ())
-                          , (NextVerNotFound, ())
-                          , (NoToolVersionSet, ())
-                          , (FileAlreadyExistsError, ())
-                          , (ProcessError, ())
-
-                          , ((), NotInstalled)
-                          ]
-
-runInstGHC :: AppState
-           -> Maybe PlatformRequest
-           -> Excepts InstallGHCEffects (ResourceT (ReaderT AppState IO)) a
-           -> IO (VEither InstallGHCEffects a)
-runInstGHC appstate' mInstPlatform =
-  flip runReaderT (maybe appstate' (\x -> appstate'{ pfreq = x } :: AppState) mInstPlatform)
-  . runResourceT
-  . runE
-    @InstallGHCEffects
-
-
-    -------------------
-    --[ Entrypoints ]--
-    -------------------
-
-
-install :: Either InstallCommand InstallOptions -> Settings -> IO AppState -> (ReaderT LeanAppState IO () -> IO ()) -> IO ExitCode
-install installCommand settings getAppState' runLogger = case installCommand of
-  (Right iopts) -> do
-    runLogger (logWarn "This is an old-style command for installing GHC. Use 'ghcup install ghc' instead.")
-    installGHC iopts
-  (Left (InstallGHC iopts)) -> installGHC iopts
-  (Left (InstallCabal iopts)) -> installCabal iopts
-  (Left (InstallHLS iopts)) -> installHLS iopts
-  (Left (InstallStack iopts)) -> installStack iopts
- where
-  installGHC :: InstallOptions -> IO ExitCode
-  installGHC InstallOptions{..} = do
-    s'@AppState{ dirs = Dirs{ .. } } <- liftIO getAppState'
-    (case instBindist of
-       Nothing -> runInstGHC s' instPlatform $ do
-         (v, vi) <- liftE $ fromVersion instVer GHC
-         void $ liftE $ sequenceE (installGHCBin
-                     (_tvVersion v)
-                     isolateDir
-                     forceInstall
-                   )
-                   $ when instSet $ when (isNothing isolateDir) $ void $ setGHC v SetGHCOnly Nothing
-         pure vi
-       Just uri -> do
-         runInstGHC s'{ settings = settings {noVerify = True}} instPlatform $ do
-           (v, vi) <- liftE $ fromVersion instVer GHC
-           void $ liftE $ sequenceE (installGHCBindist
-                       (DownloadInfo uri (Just $ RegexDir "ghc-.*") "")
-                       (_tvVersion v)
-                       isolateDir
-                       forceInstall
-                     )
-                     $ when instSet $ when (isNothing isolateDir) $ void $ setGHC v SetGHCOnly Nothing
-           pure vi
-      )
-        >>= \case
-              VRight vi -> do
-                runLogger $ logInfo "GHC installation successful"
-                forM_ (_viPostInstall =<< vi) $ \msg ->
-                  runLogger $ logInfo msg
-                pure ExitSuccess
-
-              VLeft (V (AlreadyInstalled _ v, ())) -> do
-                runLogger $ logWarn $
-                  "GHC ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup install ghc --force " <> prettyVer v <> "'"
-                pure ExitSuccess
-              VLeft (V (AlreadyInstalled _ v)) -> do
-                runLogger $ logWarn $
-                  "GHC ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup install ghc --force " <> prettyVer v <> "'"
-                pure ExitSuccess
-
-              VLeft (V (DirNotEmpty fp)) -> do
-                runLogger $ logWarn $
-                  "Install directory " <> T.pack fp <> " is not empty. Use 'ghcup install ghc --isolate " <> T.pack fp <> " --force ..." <> "' to install regardless."
-                pure $ ExitFailure 3
-              VLeft (V (DirNotEmpty fp, ())) -> do
-                runLogger $ logWarn $
-                  "Install directory " <> T.pack fp <> " is not empty. Use 'ghcup install ghc --isolate " <> T.pack fp <> " --force ..." <> "' to install regardless."
-                pure $ ExitFailure 3
-
-              VLeft err@(V (BuildFailed tmpdir _)) -> do
-                case keepDirs settings of
-                  Never -> runLogger (logError $ T.pack $ prettyShow err)
-                  _ -> runLogger (logError $ T.pack (prettyShow err) <> "\n" <>
-                    "Check the logs at " <> T.pack logsDir <> " and the build directory " <> T.pack tmpdir <> " for more clues." <> "\n" <>
-                    "Make sure to clean up " <> T.pack tmpdir <> " afterwards.")
-                pure $ ExitFailure 3
-              VLeft err@(V (BuildFailed tmpdir _, ())) -> do
-                case keepDirs settings of
-                  Never -> runLogger (logError $ T.pack $ prettyShow err)
-                  _ -> runLogger (logError $ T.pack (prettyShow err) <> "\n" <>
-                    "Check the logs at " <> T.pack logsDir <> " and the build directory " <> T.pack tmpdir <> " for more clues." <> "\n" <>
-                    "Make sure to clean up " <> T.pack tmpdir <> " afterwards.")
-                pure $ ExitFailure 3
-
-              VLeft e -> do
-                runLogger $ do
-                  logError $ T.pack $ prettyShow e
-                  logError $ "Also check the logs in " <> T.pack logsDir
-                pure $ ExitFailure 3
-
-
-  installCabal :: InstallOptions -> IO ExitCode
-  installCabal InstallOptions{..} = do
-    s'@AppState{ dirs = Dirs{ .. } } <- liftIO getAppState'
-    (case instBindist of
-       Nothing -> runInstTool s' instPlatform $ do
-         (_tvVersion -> v, vi) <- liftE $ fromVersion instVer Cabal
-         void $ liftE $ sequenceE (installCabalBin
-                                    v
-                                    isolateDir
-                                    forceInstall
-                                  ) $ when instSet $ when (isNothing isolateDir) $ void $ setCabal v
-         pure vi
-       Just uri -> do
-         runInstTool s'{ settings = settings { noVerify = True}} instPlatform $ do
-           (_tvVersion -> v, vi) <- liftE $ fromVersion instVer Cabal
-           void $ liftE $ sequenceE (installCabalBindist
-                                      (DownloadInfo uri Nothing "")
-                                      v
-                                      isolateDir
-                                      forceInstall
-                                    ) $ when instSet $ when (isNothing isolateDir) $ void $ setCabal v
-           pure vi
-      )
-      >>= \case
-            VRight vi -> do
-              runLogger $ logInfo "Cabal installation successful"
-              forM_ (_viPostInstall =<< vi) $ \msg ->
-                runLogger $ logInfo msg
-              pure ExitSuccess
-            VLeft (V (AlreadyInstalled _ v)) -> do
-              runLogger $ logWarn $
-                "Cabal ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup install cabal --force " <> prettyVer v <> "'"
-              pure ExitSuccess
-            VLeft (V (FileAlreadyExistsError fp)) -> do
-              runLogger $ logWarn $
-                "File " <> T.pack fp <> " already exists. Use 'ghcup install cabal --isolate " <> T.pack fp <> " --force ..." <> "' if you want to overwrite."
-              pure $ ExitFailure 3
-            VLeft (V (AlreadyInstalled _ v, ())) -> do
-              runLogger $ logWarn $
-                "Cabal ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup install cabal --force " <> prettyVer v <> "'"
-              pure ExitSuccess
-            VLeft (V (FileAlreadyExistsError fp, ())) -> do
-              runLogger $ logWarn $
-                "File " <> T.pack fp <> " already exists. Use 'ghcup install cabal --isolate " <> T.pack fp <> " --force ..." <> "' if you want to overwrite."
-              pure $ ExitFailure 3
-            VLeft e -> do
-              runLogger $ do
-                logError $ T.pack $ prettyShow e
-                logError $ "Also check the logs in " <> T.pack logsDir
-              pure $ ExitFailure 4
-
-  installHLS :: InstallOptions -> IO ExitCode
-  installHLS InstallOptions{..} = do
-     s'@AppState{ dirs = Dirs{ .. } } <- liftIO getAppState'
-     (case instBindist of
-       Nothing -> runInstTool s' instPlatform $ do
-         (_tvVersion -> v, vi) <- liftE $ fromVersion instVer HLS
-         void $ liftE $ sequenceE (installHLSBin
-                                    v
-                                    isolateDir
-                                    forceInstall
-                                  ) $ when instSet $ when (isNothing isolateDir) $ void $ setHLS v SetHLSOnly Nothing
-         pure vi
-       Just uri -> do
-         runInstTool s'{ settings = settings { noVerify = True}} instPlatform $ do
-           (_tvVersion -> v, vi) <- liftE $ fromVersion instVer HLS
-           -- TODO: support legacy
-           void $ liftE $ sequenceE (installHLSBindist
-                                      (DownloadInfo uri (Just $ RegexDir "haskell-language-server-*") "")
-                                      v
-                                      isolateDir
-                                      forceInstall
-                                    ) $ when instSet $ when (isNothing isolateDir) $ void $ setHLS v SetHLSOnly Nothing
-           pure vi
-      )
-      >>= \case
-            VRight vi -> do
-              runLogger $ logInfo "HLS installation successful"
-              forM_ (_viPostInstall =<< vi) $ \msg ->
-                runLogger $ logInfo msg
-              pure ExitSuccess
-            VLeft (V (AlreadyInstalled _ v)) -> do
-              runLogger $ logWarn $
-                  "HLS ver "
-                <> prettyVer v
-                <> " already installed; if you really want to reinstall it, you may want to run 'ghcup install hls --force "
-                <> prettyVer v
-                <> "'"
-              pure ExitSuccess
-            VLeft (V (FileAlreadyExistsError fp)) -> do
-              runLogger $ logWarn $
-                "File " <> T.pack fp <> " already exists. Use 'ghcup install hls --isolate " <> T.pack fp <> " --force ..." <> "' if you want to overwrite."
-              pure $ ExitFailure 3
-            VLeft (V (AlreadyInstalled _ v, ())) -> do
-              runLogger $ logWarn $
-                  "HLS ver "
-                <> prettyVer v
-                <> " already installed; if you really want to reinstall it, you may want to run 'ghcup install hls --force "
-                <> prettyVer v
-                <> "'"
-              pure ExitSuccess
-            VLeft (V (FileAlreadyExistsError fp, ())) -> do
-              runLogger $ logWarn $
-                "File " <> T.pack fp <> " already exists. Use 'ghcup install hls --isolate " <> T.pack fp <> " --force ..." <> "' if you want to overwrite."
-              pure $ ExitFailure 3
-            VLeft e -> do
-              runLogger $ do
-                logError $ T.pack $ prettyShow e
-                logError $ "Also check the logs in " <> T.pack logsDir
-              pure $ ExitFailure 4
-
-  installStack :: InstallOptions -> IO ExitCode
-  installStack InstallOptions{..} = do
-     s'@AppState{ dirs = Dirs{ .. } } <- liftIO getAppState'
-     (case instBindist of
-        Nothing -> runInstTool s' instPlatform $ do
-          (_tvVersion -> v, vi) <- liftE $ fromVersion instVer Stack
-          void $ liftE $ sequenceE (installStackBin
-                                     v
-                                     isolateDir
-                                     forceInstall
-                                   ) $ when instSet $ when (isNothing isolateDir) $ void $ setStack v
-          pure vi
-        Just uri -> do
-          runInstTool s'{ settings = settings { noVerify = True}} instPlatform $ do
-            (_tvVersion -> v, vi) <- liftE $ fromVersion instVer Stack
-            void $ liftE $ sequenceE (installStackBindist
-                                       (DownloadInfo uri Nothing "")
-                                       v
-                                       isolateDir
-                                       forceInstall
-                                     ) $ when instSet $ when (isNothing isolateDir) $ void $ setStack v
-            pure vi
-      )
-      >>= \case
-            VRight vi -> do
-              runLogger $ logInfo "Stack installation successful"
-              forM_ (_viPostInstall =<< vi) $ \msg ->
-                runLogger $ logInfo msg
-              pure ExitSuccess
-            VLeft (V (AlreadyInstalled _ v)) -> do
-              runLogger $ logWarn $
-                "Stack ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup install stack --force " <> prettyVer v <> "'"
-              pure ExitSuccess
-            VLeft (V (FileAlreadyExistsError fp)) -> do
-              runLogger $ logWarn $
-                "File " <> T.pack fp <> " already exists. Use 'ghcup install stack --isolate " <> T.pack fp <> " --force ..." <> "' if you want to overwrite."
-              pure $ ExitFailure 3
-            VLeft (V (AlreadyInstalled _ v, ())) -> do
-              runLogger $ logWarn $
-                "Stack ver " <> prettyVer v <> " already installed; if you really want to reinstall it, you may want to run 'ghcup install stack --force " <> prettyVer v <> "'"
-              pure ExitSuccess
-            VLeft (V (FileAlreadyExistsError fp, ())) -> do
-              runLogger $ logWarn $
-                "File " <> T.pack fp <> " already exists. Use 'ghcup install stack --isolate " <> T.pack fp <> " --force ..." <> "' if you want to overwrite."
-              pure $ ExitFailure 3
-            VLeft e -> do
-              runLogger $ do
-                logError $ T.pack $ prettyShow e
-                logError $ "Also check the logs in " <> T.pack logsDir
-              pure $ ExitFailure 4
-
--- a/app/ghcup/GHCup/OptParse/List.hs
+++ b/app/ghcup/GHCup/OptParse/List.hs
@@ -1,265 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.List where
-
-
-
-
-import           GHCup
-import           GHCup.Utils.Prelude
-import           GHCup.Types
-import           GHCup.OptParse.Common
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Char
-import           Data.List                      ( intercalate, sort )
-import           Data.Functor
-import           Data.Maybe
-import           Data.Versions           hiding ( str )
-import           Data.Void
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           System.Console.Pretty   hiding ( color )
-
-import qualified Data.Text                     as T
-import qualified System.Console.Pretty         as Pretty
-import Control.Exception.Safe (MonadMask)
-import qualified Text.Megaparsec               as MP
-import qualified Text.Megaparsec.Char          as MPC
-
-
-
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data ListOptions = ListOptions
-  { loTool     :: Maybe Tool
-  , lCriteria  :: Maybe ListCriteria
-  , lRawFormat :: Bool
-  }
-
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-listOpts :: Parser ListOptions
-listOpts =
-  ListOptions
-    <$> optional
-          (option
-            (eitherReader toolParser)
-            (short 't' <> long "tool" <> metavar "<ghc|cabal|hls|stack>" <> help
-              "Tool to list versions for. Default is all"
-              <> completer (toolCompleter)
-            )
-          )
-    <*> optional
-          (option
-            (eitherReader criteriaParser)
-            (  short 'c'
-            <> long "show-criteria"
-            <> metavar "<installed|set|available>"
-            <> help "Show only installed/set/available tool versions"
-              <> completer (listCompleter ["installed", "set", "available"])
-            )
-          )
-    <*> switch
-          (short 'r' <> long "raw-format" <> help "More machine-parsable format"
-          )
-
-
-
-
-    -----------------
-    --[ Utilities ]--
-    -----------------
-
-
-printListResult :: Bool -> Bool -> [ListResult] -> IO ()
-printListResult no_color raw lr = do
-
-  let
-    color | raw || no_color = (\_ x -> x)
-          | otherwise       = Pretty.color
-
-  let
-    printTag Recommended        = color Green "recommended"
-    printTag Latest             = color Yellow "latest"
-    printTag Prerelease         = color Red "prerelease"
-    printTag (Base       pvp'') = "base-" ++ T.unpack (prettyPVP pvp'')
-    printTag (UnknownTag t    ) = t
-    printTag Old                = ""
-
-  let
-    rows =
-      (\x -> if raw
-          then x
-          else [color Green "", "Tool", "Version", "Tags", "Notes"] : x
-        )
-        . fmap
-            (\ListResult {..} ->
-              let marks = if
-                    | lSet       -> (color Green (if isWindows then "IS" else "✔✔"))
-                    | lInstalled -> (color Green (if isWindows then "I " else "✓ "))
-                    | otherwise  -> (color Red   (if isWindows then "X " else "✗ "))
-              in
-                (if raw then [] else [marks])
-                  ++ [ fmap toLower . show $ lTool
-                     , case lCross of
-                       Nothing -> T.unpack . prettyVer $ lVer
-                       Just c  -> T.unpack (c <> "-" <> prettyVer lVer)
-                     , intercalate "," (filter (/= "") . fmap printTag $ sort lTag)
-                     , intercalate ","
-                     $  (if hlsPowered
-                          then [color Green "hls-powered"]
-                          else mempty
-                        )
-                     ++ (if fromSrc then [color Blue "compiled"] else mempty)
-                     ++ (if lStray then [color Yellow "stray"] else mempty)
-                     ++ (if lNoBindist
-                          then [color Red "no-bindist"]
-                          else mempty
-                        )
-                     ]
-            )
-        $ lr
-  let cols =
-        foldr (\xs ys -> zipWith (:) xs ys) (repeat []) rows
-      lengths = fmap (maximum . fmap strWidth) cols
-      padded  = fmap (\xs -> zipWith padTo xs lengths) rows
-
-  forM_ (if raw then rows else padded) $ \row -> putStrLn $ unwords row
- where
-
-  padTo str' x =
-    let lstr = strWidth str'
-        add' = x - lstr
-    in  if add' < 0 then str' else str' ++ replicate add' ' '
-
-  -- | Calculate the render width of a string, considering
-  -- wide characters (counted as double width), ANSI escape codes
-  -- (not counted), and line breaks (in a multi-line string, the longest
-  -- line determines the width).
-  strWidth :: String -> Int
-  strWidth =
-    maximum
-      . (0 :)
-      . map (foldr (\a b -> charWidth a + b) 0)
-      . lines
-      . stripAnsi
-
-  -- | Strip ANSI escape sequences from a string.
-  --
-  -- >>> stripAnsi "\ESC[31m-1\ESC[m"
-  -- "-1"
-  stripAnsi :: String -> String
-  stripAnsi s' =
-    case
-        MP.parseMaybe (many $ "" <$ MP.try ansi <|> pure <$> MP.anySingle) s'
-      of
-        Nothing -> error "Bad ansi escape"  -- PARTIAL: should not happen
-        Just xs -> concat xs
-   where
-      -- This parses lots of invalid ANSI escape codes, but that should be fine
-    ansi =
-      MPC.string "\ESC[" *> digitSemicolons *> suffix MP.<?> "ansi" :: MP.Parsec
-          Void
-          String
-          Char
-    digitSemicolons = MP.takeWhileP Nothing (\c -> isDigit c || c == ';')
-    suffix = MP.oneOf ['A', 'B', 'C', 'D', 'H', 'J', 'K', 'f', 'm', 's', 'u']
-
-  -- | Get the designated render width of a character: 0 for a combining
-  -- character, 1 for a regular character, 2 for a wide character.
-  -- (Wide characters are rendered as exactly double width in apps and
-  -- fonts that support it.) (From Pandoc.)
-  charWidth :: Char -> Int
-  charWidth c = case c of
-    _ | c < '\x0300'                     -> 1
-      | c >= '\x0300' && c <= '\x036F'   -> 0
-      |  -- combining
-        c >= '\x0370' && c <= '\x10FC'   -> 1
-      | c >= '\x1100' && c <= '\x115F'   -> 2
-      | c >= '\x1160' && c <= '\x11A2'   -> 1
-      | c >= '\x11A3' && c <= '\x11A7'   -> 2
-      | c >= '\x11A8' && c <= '\x11F9'   -> 1
-      | c >= '\x11FA' && c <= '\x11FF'   -> 2
-      | c >= '\x1200' && c <= '\x2328'   -> 1
-      | c >= '\x2329' && c <= '\x232A'   -> 2
-      | c >= '\x232B' && c <= '\x2E31'   -> 1
-      | c >= '\x2E80' && c <= '\x303E'   -> 2
-      | c == '\x303F'                    -> 1
-      | c >= '\x3041' && c <= '\x3247'   -> 2
-      | c >= '\x3248' && c <= '\x324F'   -> 1
-      | -- ambiguous
-        c >= '\x3250' && c <= '\x4DBF'   -> 2
-      | c >= '\x4DC0' && c <= '\x4DFF'   -> 1
-      | c >= '\x4E00' && c <= '\xA4C6'   -> 2
-      | c >= '\xA4D0' && c <= '\xA95F'   -> 1
-      | c >= '\xA960' && c <= '\xA97C'   -> 2
-      | c >= '\xA980' && c <= '\xABF9'   -> 1
-      | c >= '\xAC00' && c <= '\xD7FB'   -> 2
-      | c >= '\xD800' && c <= '\xDFFF'   -> 1
-      | c >= '\xE000' && c <= '\xF8FF'   -> 1
-      | -- ambiguous
-        c >= '\xF900' && c <= '\xFAFF'   -> 2
-      | c >= '\xFB00' && c <= '\xFDFD'   -> 1
-      | c >= '\xFE00' && c <= '\xFE0F'   -> 1
-      | -- ambiguous
-        c >= '\xFE10' && c <= '\xFE19'   -> 2
-      | c >= '\xFE20' && c <= '\xFE26'   -> 1
-      | c >= '\xFE30' && c <= '\xFE6B'   -> 2
-      | c >= '\xFE70' && c <= '\xFEFF'   -> 1
-      | c >= '\xFF01' && c <= '\xFF60'   -> 2
-      | c >= '\xFF61' && c <= '\x16A38'  -> 1
-      | c >= '\x1B000' && c <= '\x1B001' -> 2
-      | c >= '\x1D000' && c <= '\x1F1FF' -> 1
-      | c >= '\x1F200' && c <= '\x1F251' -> 2
-      | c >= '\x1F300' && c <= '\x1F773' -> 1
-      | c >= '\x20000' && c <= '\x3FFFD' -> 2
-      | otherwise                        -> 1
-
-
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-list :: ( Monad m
-         , MonadMask m
-         , MonadUnliftIO m
-         , MonadFail m
-         )
-      => ListOptions
-      -> Bool
-      -> (ReaderT AppState m ExitCode -> m ExitCode)
-      -> m ExitCode
-list ListOptions{..} no_color runAppState =
-  runAppState (do
-      l <- listVersions loTool lCriteria
-      liftIO $ printListResult no_color lRawFormat l
-      pure ExitSuccess
-    )
--- a/app/ghcup/GHCup/OptParse/Nuke.hs
+++ b/app/ghcup/GHCup/OptParse/Nuke.hs
@@ -1,99 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.Nuke where
-
-
-
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Utils.Logger
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Maybe
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import Control.Exception.Safe (MonadMask)
-import Control.DeepSeq
-import Control.Exception
-import Control.Concurrent (threadDelay)
-
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type NukeEffects = '[ NotInstalled ]
-
-
-runNuke :: AppState
-        -> Excepts NukeEffects (ReaderT AppState m) a
-        -> m (VEither NukeEffects a)
-runNuke s' =
-  flip runReaderT s' . runE @NukeEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-nuke :: ( Monad m
-        , MonadMask m
-        , MonadUnliftIO m
-        , MonadFail m
-        )
-     => IO AppState
-     -> (ReaderT LeanAppState m () -> m ())
-     -> m ExitCode
-nuke appState runLogger = do
-  s' <- liftIO appState
-  void $ liftIO $ evaluate $ force s'
-  runNuke s' (do
-       lift $ logWarn "WARNING: This will remove GHCup and all installed components from your system."
-       lift $ logWarn "Waiting 10 seconds before commencing, if you want to cancel it, now would be the time."
-       liftIO $ threadDelay 10000000  -- wait 10s
-
-       lift $ logInfo "Initiating Nuclear Sequence 🚀🚀🚀"
-       lift $ logInfo "Nuking in 3...2...1"
-  
-       lInstalled <- lift $ listVersions Nothing (Just ListInstalled)
-
-       forM_ lInstalled (liftE . rmTool)
-
-       lift rmGhcupDirs
-
-       ) >>= \case
-                VRight leftOverFiles
-                  | null leftOverFiles -> do
-                      runLogger $ logInfo "Nuclear Annihilation complete!"
-                      pure ExitSuccess
-                  | otherwise -> do
-                      runLogger $ logError "These Files have survived Nuclear Annihilation, you may remove them manually."
-                      liftIO $ forM_ leftOverFiles putStrLn
-                      pure ExitSuccess
-
-                VLeft e -> do
-                  runLogger $ logError $ T.pack $ prettyShow e
-                  pure $ ExitFailure 15
--- a/app/ghcup/GHCup/OptParse/Prefetch.hs
+++ b/app/ghcup/GHCup/OptParse/Prefetch.hs
@@ -1,219 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.Prefetch where
-
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Utils.Logger
-import           GHCup.OptParse.Common
-import           GHCup.Utils.String.QQ
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Functor
-import           Data.Maybe
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import Control.Exception.Safe (MonadMask)
-import GHCup.Utils.Prelude
-import GHCup.Download (getDownloadsF)
-
-
-
-
-    ----------------
-    --[ Commands ]--
-    ----------------
-
-
-data PrefetchCommand = PrefetchGHC PrefetchGHCOptions (Maybe ToolVersion)
-                     | PrefetchCabal PrefetchOptions (Maybe ToolVersion)
-                     | PrefetchHLS PrefetchOptions (Maybe ToolVersion)
-                     | PrefetchStack PrefetchOptions (Maybe ToolVersion)
-                     | PrefetchMetadata
-
-
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data PrefetchOptions = PrefetchOptions {
-  pfCacheDir :: Maybe FilePath
-}
-
-data PrefetchGHCOptions = PrefetchGHCOptions {
-    pfGHCSrc :: Bool
-  , pfGHCCacheDir :: Maybe FilePath
-}
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-prefetchP :: Parser PrefetchCommand
-prefetchP = subparser
-  (  command
-      "ghc"
-      (info 
-        (PrefetchGHC
-          <$> (PrefetchGHCOptions
-                <$> ( switch (short 's' <> long "source" <> help "Download source tarball instead of bindist") <**> helper )
-                <*> optional (option str (short 'd' <> long "directory" <> help "directory to download into (default: ~/.ghcup/cache/)" <> completer (bashCompleter "directory"))))
-          <*>  optional (toolVersionArgument Nothing (Just GHC)) )
-        ( progDesc "Download GHC assets for installation")
-      )
-      <>
-     command
-      "cabal"
-      (info 
-        (PrefetchCabal
-          <$> fmap PrefetchOptions (optional (option str (short 'd' <> long "directory" <> help "directory to download into (default: ~/.ghcup/cache/)" <> completer (bashCompleter "directory"))))
-          <*> ( optional (toolVersionArgument Nothing (Just Cabal)) <**> helper ))
-        ( progDesc "Download cabal assets for installation")
-      )
-      <>
-     command
-      "hls"
-      (info 
-        (PrefetchHLS
-          <$> fmap PrefetchOptions (optional (option str (short 'd' <> long "directory" <> help "directory to download into (default: ~/.ghcup/cache/)" <> completer (bashCompleter "directory"))))
-          <*> ( optional (toolVersionArgument Nothing (Just HLS)) <**> helper ))
-        ( progDesc "Download HLS assets for installation")
-      )
-      <>
-     command
-      "stack"
-      (info 
-        (PrefetchStack
-          <$> fmap PrefetchOptions (optional (option str (short 'd' <> long "directory" <> help "directory to download into (default: ~/.ghcup/cache/)" <> completer (bashCompleter "directory"))))
-          <*> ( optional (toolVersionArgument Nothing (Just Stack)) <**> helper ))
-        ( progDesc "Download stack assets for installation")
-      )
-      <>
-     command
-      "metadata"
-      (PrefetchMetadata <$ info
-        helper
-        ( progDesc "Download ghcup's metadata, needed for various operations")
-      )
-  )
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-prefetchFooter :: String
-prefetchFooter = [s|Discussion:
-  Prefetches tools or assets into "~/.ghcup/cache" directory. This can
-  be then combined later with '--offline' flag, ensuring all assets that
-  are required for offline use have been prefetched.
-
-Examples:
-  ghcup prefetch metadata
-  ghcup prefetch ghc 8.10.5
-  ghcup --offline install ghc 8.10.5|]
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type PrefetchEffects = '[ TagNotFound
-                        , NextVerNotFound
-                        , NoToolVersionSet
-                        , NoDownload
-                        , DigestError
-                        , GPGError
-                        , DownloadFailed
-                        , JSONError
-                        , FileDoesNotExistError ]
-
-
-runPrefetch :: MonadUnliftIO m
-            => (ReaderT AppState m (VEither PrefetchEffects a) -> m (VEither PrefetchEffects a))
-            -> Excepts PrefetchEffects (ResourceT (ReaderT AppState m)) a
-            -> m (VEither PrefetchEffects a)
-runPrefetch runAppState =
-  runAppState
-  . runResourceT
-  . runE
-    @PrefetchEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-prefetch :: ( Monad m
-            , MonadMask m
-            , MonadUnliftIO m
-            , MonadFail m
-            )
-         => PrefetchCommand
-         -> (forall a. ReaderT AppState m (VEither PrefetchEffects a) -> m (VEither PrefetchEffects a))
-         -> (ReaderT LeanAppState m () -> m ())
-         -> m ExitCode
-prefetch prefetchCommand runAppState runLogger =
-  runPrefetch runAppState (do
-    case prefetchCommand of
-      PrefetchGHC
-        (PrefetchGHCOptions pfGHCSrc pfCacheDir) mt -> do
-          forM_ pfCacheDir (liftIO . createDirRecursive')
-          (v, _) <- liftE $ fromVersion mt GHC
-          if pfGHCSrc
-          then liftE $ fetchGHCSrc (_tvVersion v) pfCacheDir
-          else liftE $ fetchToolBindist (_tvVersion v) GHC pfCacheDir
-      PrefetchCabal PrefetchOptions {pfCacheDir} mt   -> do
-        forM_ pfCacheDir (liftIO . createDirRecursive')
-        (v, _) <- liftE $ fromVersion mt Cabal
-        liftE $ fetchToolBindist (_tvVersion v) Cabal pfCacheDir
-      PrefetchHLS PrefetchOptions {pfCacheDir} mt   -> do
-        forM_ pfCacheDir (liftIO . createDirRecursive')
-        (v, _) <- liftE $ fromVersion mt HLS
-        liftE $ fetchToolBindist (_tvVersion v) HLS pfCacheDir
-      PrefetchStack PrefetchOptions {pfCacheDir} mt   -> do
-        forM_ pfCacheDir (liftIO . createDirRecursive')
-        (v, _) <- liftE $ fromVersion mt Stack
-        liftE $ fetchToolBindist (_tvVersion v) Stack pfCacheDir
-      PrefetchMetadata -> do
-        _ <- liftE getDownloadsF
-        pure ""
-       ) >>= \case
-                VRight _ -> do
-                      pure ExitSuccess
-                VLeft e -> do
-                  runLogger $ logError $ T.pack $ prettyShow e
-                  pure $ ExitFailure 15
--- a/app/ghcup/GHCup/OptParse/Rm.hs
+++ b/app/ghcup/GHCup/OptParse/Rm.hs
@@ -1,232 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.Rm where
-
-
-
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Types.Optics
-import           GHCup.Utils
-import           GHCup.Utils.Logger
-import           GHCup.OptParse.Common
-import           GHCup.Utils.String.QQ
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Functor
-import           Data.Maybe
-import           Data.Versions           hiding ( str )
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import Control.Exception.Safe (MonadMask)
-
-
-
-
-    ----------------
-    --[ Commands ]--
-    ----------------
-
-
-data RmCommand = RmGHC RmOptions
-               | RmCabal Version
-               | RmHLS Version
-               | RmStack Version
-
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data RmOptions = RmOptions
-  { ghcVer :: GHCTargetVersion
-  }
-
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-rmParser :: Parser (Either RmCommand RmOptions)
-rmParser =
-  (Left <$> subparser
-      (  command
-          "ghc"
-          (RmGHC <$> info (rmOpts (Just GHC) <**> helper) (progDesc "Remove GHC version"))
-      <> command
-           "cabal"
-           (   RmCabal
-           <$> info (versionParser' (Just ListInstalled) (Just Cabal) <**> helper)
-                    (progDesc "Remove Cabal version")
-           )
-      <> command
-           "hls"
-           (   RmHLS
-           <$> info (versionParser' (Just ListInstalled) (Just HLS) <**> helper)
-                    (progDesc "Remove haskell-language-server version")
-           )
-      <> command
-           "stack"
-           (   RmStack
-           <$> info (versionParser' (Just ListInstalled) (Just Stack) <**> helper)
-                    (progDesc "Remove stack version")
-           )
-      )
-    )
-    <|> (Right <$> rmOpts Nothing)
-
-
-
-rmOpts :: Maybe Tool -> Parser RmOptions
-rmOpts tool = RmOptions <$> versionArgument (Just ListInstalled) tool
-
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-rmFooter :: String
-rmFooter = [s|Discussion:
-  Remove the given GHC or cabal version. When no command is given,
-  defaults to removing GHC with the specified version.
-  It is recommended to always specify a subcommand (ghc/cabal/hls/stack).|]
-
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type RmEffects = '[ NotInstalled ]
-
-
-runRm :: (ReaderT env m (VEither RmEffects a) -> m (VEither RmEffects a))
-            -> Excepts RmEffects (ReaderT env m) a
-            -> m (VEither RmEffects a)
-runRm runAppState =
-    runAppState
-    . runE
-      @RmEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-rm :: ( Monad m
-      , MonadMask m
-      , MonadUnliftIO m
-      , MonadFail m
-      )
-   => Either RmCommand RmOptions
-   -> (ReaderT AppState m (VEither RmEffects (Maybe VersionInfo))
-       -> m (VEither RmEffects (Maybe VersionInfo)))
-   -> (ReaderT LeanAppState m () -> m ())
-   -> m ExitCode
-rm rmCommand runAppState runLogger = case rmCommand of
-  (Right rmopts) -> do
-    runLogger (logWarn "This is an old-style command for removing GHC. Use 'ghcup rm ghc' instead.")
-    rmGHC' rmopts
-  (Left (RmGHC rmopts)) -> rmGHC' rmopts
-  (Left (RmCabal rmopts)) -> rmCabal' rmopts
-  (Left (RmHLS rmopts)) -> rmHLS' rmopts
-  (Left (RmStack rmopts)) -> rmStack' rmopts
-
- where
-  rmGHC' RmOptions{..} =
-    runRm runAppState (do
-        liftE $
-          rmGHCVer ghcVer
-        GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-        pure (getVersionInfo (_tvVersion ghcVer) GHC dls)
-      )
-      >>= \case
-            VRight vi -> do
-              forM_ (_viPostRemove =<< vi) $ \msg ->
-                runLogger $ logInfo msg
-              pure ExitSuccess
-            VLeft  e -> do
-              runLogger $ logError $ T.pack $ prettyShow e
-              pure $ ExitFailure 7
-
-  rmCabal' tv =
-    runRm runAppState (do
-        liftE $
-          rmCabalVer tv
-        GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-        pure (getVersionInfo tv Cabal dls)
-      )
-      >>= \case
-            VRight vi -> do
-              forM_ (_viPostRemove =<< vi) $ \msg ->
-                runLogger $ logInfo msg
-              pure ExitSuccess
-            VLeft  e -> do
-              runLogger $ logError $ T.pack $ prettyShow e
-              pure $ ExitFailure 15
-
-  rmHLS' tv =
-    runRm runAppState (do
-        liftE $
-          rmHLSVer tv
-        GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-        pure (getVersionInfo tv HLS dls)
-      )
-      >>= \case
-            VRight vi -> do
-              forM_ (_viPostRemove =<< vi) $ \msg ->
-                runLogger $ logInfo msg
-              pure ExitSuccess
-            VLeft  e -> do
-              runLogger $ logError $ T.pack $ prettyShow e
-              pure $ ExitFailure 15
-
-  rmStack' tv =
-    runRm runAppState (do
-        liftE $
-          rmStackVer tv
-        GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-        pure (getVersionInfo tv Stack dls)
-      )
-      >>= \case
-            VRight vi -> do
-              forM_ (_viPostRemove =<< vi) $ \msg ->
-                runLogger $ logInfo msg
-              pure ExitSuccess
-            VLeft  e -> do
-              runLogger $ logError $ T.pack $ prettyShow e
-              pure $ ExitFailure 15
-
--- a/app/ghcup/GHCup/OptParse/Run.hs
+++ b/app/ghcup/GHCup/OptParse/Run.hs
@@ -1,463 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE RankNTypes        #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE TypeFamilies      #-}
-module GHCup.OptParse.Run where
-
-
-import           GHCup
-import           GHCup.Utils
-import           GHCup.Utils.Prelude
-import           GHCup.Utils.File
-import           GHCup.OptParse.Common
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Types.Optics
-import           GHCup.Utils.Logger
-import           GHCup.Utils.String.QQ
-
-import           Control.Exception.Safe         ( MonadMask, MonadCatch )
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Codec.Archive
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Functor
-import           Data.Maybe (isNothing)
-import           Data.List                      ( intercalate )
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Directory
-import           System.FilePath
-import           System.Environment
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Map.Strict               as Map
-import qualified Data.Text                     as T
-#ifndef IS_WINDOWS
-import qualified System.Posix.Process          as SPP
-#endif
-
-
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data RunOptions = RunOptions
-  { runAppendPATH :: Bool
-  , runInstTool'  :: Bool
-  , runGHCVer     :: Maybe ToolVersion
-  , runCabalVer   :: Maybe ToolVersion
-  , runHLSVer     :: Maybe ToolVersion
-  , runStackVer   :: Maybe ToolVersion
-  , runBinDir     :: Maybe FilePath
-  , runCOMMAND    :: [String]
-  }
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-    
-runOpts :: Parser RunOptions
-runOpts =
-  RunOptions
-    <$> switch
-          (short 'a' <> long "append" <> help "Append bin/ dir to PATH instead of prepending (this means that e.g. a system installation may take precedence)")
-    <*> switch
-          (short 'i' <> long "install" <> help "Install the tool, if missing")
-    <*> optional
-          (option
-            (eitherReader toolVersionEither)
-            (metavar "GHC_VERSION" <> long "ghc" <> help "The ghc version"
-            <> completer (tagCompleter GHC [])
-            <> (completer $ versionCompleter Nothing GHC)
-            )
-          )
-    <*> optional
-          (option
-            (eitherReader toolVersionEither)
-            (metavar "CABAL_VERSION" <> long "cabal" <> help "The cabal version"
-            <> completer (tagCompleter Cabal [])
-            <> (completer $ versionCompleter Nothing Cabal)
-            )
-          )
-    <*> optional
-          (option
-            (eitherReader toolVersionEither)
-            (metavar "HLS_VERSION" <> long "hls" <> help "The HLS version"
-            <> completer (tagCompleter HLS [])
-            <> (completer $ versionCompleter Nothing HLS)
-            )
-          )
-    <*> optional
-          (option
-            (eitherReader toolVersionEither)
-            (metavar "STACK_VERSION" <> long "stack" <> help "The stack version"
-            <> completer (tagCompleter Stack [])
-            <> (completer $ versionCompleter Nothing Stack)
-            )
-          )
-    <*> optional
-          (option
-           (eitherReader isolateParser)
-           (  short 'b'
-           <> long "bindir"
-           <> metavar "DIR"
-           <> help "directory where to create the tool symlinks (default: newly created system temp dir)"
-           <> completer (bashCompleter "directory")
-           )
-          )
-    <*> many (argument str (metavar "COMMAND" <> help "The command to run, with arguments (use longopts --). If omitted, just prints the created bin/ dir to stdout and exits."))
-          
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-runFooter :: String
-runFooter = [s|Discussion:
-  Adds the given tools to a dedicated bin/ directory and adds them to PATH, exposing
-  the relevant binaries, then executes a command.
-
-Examples:
-  # run VSCode with all latest toolchain exposed, installing missing versions if necessary
-  ghcup run --ghc latest --cabal latest --hls latest --stack latest --install -- code Setup.hs
-
-  # create a custom toolchain bin/ dir with GHC and cabal that can be manually added to PATH
-  ghcup run --ghc 8.10.7 --cabal 3.2.0.0 --bindir $HOME/toolchain/bin
-
-  # run a specific ghc version
-  ghcup run --ghc 8.10.7 -- ghc --version|]
-
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type RunEffects = '[ AlreadyInstalled
-                   , UnknownArchive
-                   , ArchiveResult
-                   , FileDoesNotExistError
-                   , CopyError
-                   , NotInstalled
-                   , DirNotEmpty
-                   , NoDownload
-                   , NotInstalled
-                   , BuildFailed
-                   , TagNotFound
-                   , DigestError
-                   , GPGError
-                   , DownloadFailed
-                   , TarDirDoesNotExist
-                   , NextVerNotFound
-                   , NoToolVersionSet
-                   , FileAlreadyExistsError
-                   , ProcessError
-                   ]
-
-runLeanRUN :: (MonadUnliftIO m, MonadIO m)
-           => LeanAppState
-           -> Excepts RunEffects (ReaderT LeanAppState m) a
-           -> m (VEither RunEffects a)
-runLeanRUN leanAppstate =
-    -- Don't use runLeanAppState here, which is disabled on windows.
-    -- This is the only command on all platforms that doesn't need full appstate.
-    flip runReaderT leanAppstate
-    . runE
-      @RunEffects
-
-runRUN :: MonadUnliftIO m
-      => IO AppState
-      -> Excepts RunEffects (ResourceT (ReaderT AppState m)) a
-      -> m (VEither RunEffects a)
-runRUN appState action' = do
-  s' <- liftIO appState
-  flip runReaderT s'
-    . runResourceT
-    . runE
-      @RunEffects
-    $ action'
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-run :: forall m. 
-       ( MonadFail m
-       , MonadMask m
-       , MonadCatch m
-       , MonadIO m
-       , MonadUnliftIO m
-       )
-   => RunOptions
-   -> IO AppState
-   -> LeanAppState
-   -> (ReaderT LeanAppState m () -> m ())
-   -> m ExitCode
-run RunOptions{..} runAppState leanAppstate runLogger = do
-   r <- if or (fmap (maybe False isToolTag) [runGHCVer, runCabalVer, runHLSVer, runStackVer]) || runInstTool'
-        then runRUN runAppState $ do
-         toolchain <- liftE resolveToolchainFull
-         tmp <- case runBinDir of
-           Just bindir -> do
-             liftIO $ createDirRecursive' bindir
-             liftIO $ canonicalizePath bindir
-           Nothing -> do
-             d <- liftIO $ predictableTmpDir toolchain
-             liftIO $ createDirRecursive' d
-             liftIO $ canonicalizePath d
-         liftE $ installToolChainFull toolchain tmp
-         pure tmp
-        else runLeanRUN leanAppstate $ do
-         toolchain <- resolveToolchain
-         tmp <- case runBinDir of
-           Just bindir -> do
-             liftIO $ createDirRecursive' bindir
-             liftIO $ canonicalizePath bindir
-           Nothing -> do
-             d <- liftIO $ predictableTmpDir toolchain
-             liftIO $ createDirRecursive' d
-             liftIO $ canonicalizePath d
-         liftE $ installToolChain toolchain tmp
-         pure tmp
-   case r of
-         VRight tmp -> do
-           case runCOMMAND of
-             [] -> do
-               liftIO $ putStr tmp
-               pure ExitSuccess
-             (cmd:args) -> do
-               newEnv <- liftIO $ addToPath tmp
-#ifndef IS_WINDOWS
-               void $ liftIO $ SPP.executeFile cmd True args (Just newEnv)
-               pure ExitSuccess
-#else
-               r' <- runLeanRUN leanAppstate $ liftE $ lEM @_ @'[ProcessError] $ exec cmd args Nothing (Just newEnv)
-               case r' of
-                 VRight _ -> pure ExitSuccess
-                 VLeft e -> do
-                   runLogger $ logError $ T.pack $ prettyShow e
-                   pure $ ExitFailure 28
-#endif
-         VLeft e -> do
-           runLogger $ logError $ T.pack $ prettyShow e
-           pure $ ExitFailure 27
-
-  where
-
-   isToolTag :: ToolVersion -> Bool
-   isToolTag (ToolTag _) = True
-   isToolTag _           = False
-
-   -- TODO: doesn't work for cross
-   resolveToolchainFull :: ( MonadFail m
-                           , MonadThrow m
-                           , MonadIO m
-                           , MonadCatch m
-                           )
-                        => Excepts
-                             '[ TagNotFound
-                              , NextVerNotFound
-                              , NoToolVersionSet
-                              ] (ResourceT (ReaderT AppState m)) Toolchain
-   resolveToolchainFull = do
-         ghcVer <- forM runGHCVer $ \ver -> do
-           (v, _) <- liftE $ fromVersion (Just ver) GHC
-           pure v
-         cabalVer <- forM runCabalVer $ \ver -> do
-           (v, _) <- liftE $ fromVersion (Just ver) Cabal
-           pure v
-         hlsVer <- forM runHLSVer $ \ver -> do
-           (v, _) <- liftE $ fromVersion (Just ver) HLS
-           pure v
-         stackVer <- forM runStackVer $ \ver -> do
-           (v, _) <- liftE $ fromVersion (Just ver) Stack
-           pure v
-         pure Toolchain{..}
-
-   resolveToolchain = do
-         ghcVer <- case runGHCVer of
-            Just (ToolVersion v) -> pure $ Just v
-            Nothing -> pure Nothing
-            _ -> fail "Internal error"
-         cabalVer <- case runCabalVer of
-            Just (ToolVersion v) -> pure $ Just v
-            Nothing -> pure Nothing
-            _ -> fail "Internal error"
-         hlsVer <- case runHLSVer of
-            Just (ToolVersion v) -> pure $ Just v
-            Nothing -> pure Nothing
-            _ -> fail "Internal error"
-         stackVer <- case runStackVer of
-            Just (ToolVersion v) -> pure $ Just v
-            Nothing -> pure Nothing
-            _ -> fail "Internal error"
-         pure Toolchain{..}
-
-   installToolChainFull :: ( MonadFail m
-                           , MonadThrow m
-                           , MonadIO m
-                           , MonadCatch m
-                           )
-                        => Toolchain
-                        -> FilePath
-                        -> Excepts
-                             '[ TagNotFound
-                              , NextVerNotFound
-                              , NoToolVersionSet
-                              , UnknownArchive
-                              , TarDirDoesNotExist
-                              , ProcessError
-                              , NotInstalled
-                              , NoDownload
-                              , GPGError
-                              , DownloadFailed
-                              , DirNotEmpty
-                              , DigestError
-                              , BuildFailed
-                              , ArchiveResult
-                              , AlreadyInstalled
-                              , FileAlreadyExistsError
-                              , CopyError
-                              ] (ResourceT (ReaderT AppState m)) ()
-   installToolChainFull Toolchain{..} tmp = do
-         forM_ [(GHC,) <$> ghcVer, (Cabal,) <$> cabalVer, (HLS,) <$> hlsVer, (Stack,) <$> stackVer] $ \mt -> do
-           isInstalled <- maybe (pure False) (\(tool, v) -> lift $ checkIfToolInstalled' tool v) mt
-           case mt of
-             Just (GHC, v) -> do
-               unless isInstalled $ when (runInstTool' && isNothing (_tvTarget v)) $ void $ liftE $ installGHCBin
-                 (_tvVersion v)
-                 Nothing
-                 False
-               setTool GHC v tmp
-             Just (Cabal, v) -> do
-               unless isInstalled $ when runInstTool' $ void $ liftE $ installCabalBin
-                 (_tvVersion v)
-                 Nothing
-                 False
-               setTool Cabal v tmp
-             Just (Stack, v) -> do
-               unless isInstalled $ when runInstTool' $ void $ liftE $ installStackBin
-                 (_tvVersion v)
-                 Nothing
-                 False
-               setTool Stack v tmp
-             Just (HLS, v) -> do
-               unless isInstalled $ when runInstTool' $ void $ liftE $ installHLSBin
-                 (_tvVersion v)
-                 Nothing
-                 False
-               setTool HLS v tmp
-             _ -> pure ()
-
-   installToolChain :: ( MonadFail m
-                       , MonadThrow m
-                       , MonadIO m
-                       , MonadCatch m
-                       )
-                    => Toolchain
-                    -> FilePath
-                    -> Excepts '[NotInstalled] (ReaderT LeanAppState m) ()
-   installToolChain Toolchain{..} tmp = do
-         forM_ [(GHC,) <$> ghcVer, (Cabal,) <$> cabalVer, (HLS,) <$> hlsVer, (Stack,) <$> stackVer] $ \mt -> do
-           case mt of
-             Just (GHC, v)   -> setTool GHC v tmp
-             Just (Cabal, v) -> setTool Cabal v tmp
-             Just (Stack, v) -> setTool Stack v tmp
-             Just (HLS, v)   -> setTool HLS v tmp
-             _ -> pure ()
-
-   setTool tool v tmp =
-      case tool of
-        GHC -> do
-          void $ liftE $ setGHC v SetGHC_XYZ (Just tmp)
-          void $ liftE $ setGHC v SetGHCOnly (Just tmp)
-        Cabal -> do
-          bin  <- liftE $ whereIsTool Cabal v
-          cbin <- liftIO $ canonicalizePath bin
-          lift $ createLink (relativeSymlink tmp cbin) (tmp </> ("cabal" <.> exeExt))
-        Stack -> do
-          bin  <- liftE $ whereIsTool Stack v
-          cbin <- liftIO $ canonicalizePath bin
-          lift $ createLink (relativeSymlink tmp cbin) (tmp </> ("stack" <.> exeExt))
-        HLS -> do
-          Dirs {..}  <- getDirs
-          let v' = _tvVersion v
-          legacy <- isLegacyHLS v'
-          if legacy
-          then do
-            -- TODO: factor this out
-            hlsWrapper <- liftE @_ @'[NotInstalled] $ hlsWrapperBinary v' !? (NotInstalled HLS (mkTVer v'))
-            cw <- liftIO $ canonicalizePath (binDir </> hlsWrapper)
-            lift $ createLink (relativeSymlink tmp cw) (tmp </> takeFileName cw)
-            hlsBins <- hlsServerBinaries v' Nothing >>= liftIO . traverse (canonicalizePath . (binDir </>))
-            forM_ hlsBins $ \bin ->
-              lift $ createLink (relativeSymlink tmp bin) (tmp </> takeFileName bin)
-            liftE $ setHLS (_tvVersion v) SetHLSOnly (Just tmp)
-          else do
-            liftE $ setHLS (_tvVersion v) SetHLS_XYZ (Just tmp)
-            liftE $ setHLS (_tvVersion v) SetHLSOnly (Just tmp)
-        GHCup -> pure ()
-       
-   addToPath path = do
-    cEnv <- Map.fromList <$> getEnvironment
-    let paths          = ["PATH", "Path"]
-        curPaths       = (\x -> maybe [] splitSearchPath (Map.lookup x cEnv)) =<< paths
-        newPath        = intercalate [searchPathSeparator] (if runAppendPATH then (curPaths ++ [path]) else (path : curPaths))
-        envWithoutPath = foldr (\x y -> Map.delete x y) cEnv paths
-        pathVar        = if isWindows then "Path" else "PATH"
-        envWithNewPath = Map.toList $ Map.insert pathVar newPath envWithoutPath
-    liftIO $ setEnv pathVar newPath
-    return envWithNewPath
-
-   predictableTmpDir (Toolchain Nothing Nothing Nothing Nothing) =
-     liftIO (getTemporaryDirectory >>= \tmp -> pure (tmp </> "ghcup-none"))
-   predictableTmpDir Toolchain{..} = do
-      tmp <- getTemporaryDirectory
-      pure $ tmp
-        </> ("ghcup-" <> intercalate "_"
-              (  maybe [] ( (:[]) . ("ghc-"   <>) . T.unpack . tVerToText) ghcVer
-              <> maybe [] ( (:[]) . ("cabal-" <>) . T.unpack . tVerToText) cabalVer
-              <> maybe [] ( (:[]) . ("hls-"   <>) . T.unpack . tVerToText) hlsVer
-              <> maybe [] ( (:[]) . ("stack-" <>) . T.unpack . tVerToText) stackVer
-              )
-            )
-
-
-
-    -------------------------
-    --[ Other local types ]--
-    -------------------------
-
-
-
-data Toolchain = Toolchain
-  { ghcVer     :: Maybe GHCTargetVersion
-  , cabalVer   :: Maybe GHCTargetVersion
-  , hlsVer     :: Maybe GHCTargetVersion
-  , stackVer   :: Maybe GHCTargetVersion
-  }
--- a/app/ghcup/GHCup/OptParse/Set.hs
+++ b/app/ghcup/GHCup/OptParse/Set.hs
@@ -1,349 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.Set where
-
-
-
-
-import           GHCup.OptParse.Common
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Utils.Logger
-import           GHCup.Utils.String.QQ
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Either
-import           Data.Functor
-import           Data.Maybe
-import           Data.Versions           hiding ( str )
-import           GHC.Unicode
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Options.Applicative.Help.Pretty ( text )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import Data.Bifunctor (second)
-import Control.Exception.Safe (MonadMask)
-import GHCup.Types.Optics
-
-
-
-
-    ----------------
-    --[ Commands ]--
-    ----------------
-
-
-data SetCommand = SetGHC SetOptions
-                | SetCabal SetOptions
-                | SetHLS SetOptions
-                | SetStack SetOptions
-
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data SetOptions = SetOptions
-  { sToolVer :: SetToolVersion
-  }
-
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-setParser :: Parser (Either SetCommand SetOptions)
-setParser =
-  (Left <$> subparser
-      (  command
-          "ghc"
-          (   SetGHC
-          <$> info
-                (setOpts (Just GHC) <**> helper)
-                (  progDesc "Set GHC version"
-                <> footerDoc (Just $ text setGHCFooter)
-                )
-          )
-      <> command
-           "cabal"
-           (   SetCabal
-           <$> info
-                 (setOpts (Just Cabal) <**> helper)
-                 (  progDesc "Set Cabal version"
-                 <> footerDoc (Just $ text setCabalFooter)
-                 )
-           )
-      <> command
-           "hls"
-           (   SetHLS
-           <$> info
-                 (setOpts (Just HLS) <**> helper)
-                 (  progDesc "Set haskell-language-server version"
-                 <> footerDoc (Just $ text setHLSFooter)
-                 )
-           )
-      <> command
-           "stack"
-           (   SetStack
-           <$> info
-                 (setOpts (Just Stack) <**> helper)
-                 (  progDesc "Set stack version"
-                 <> footerDoc (Just $ text setStackFooter)
-                 )
-           )
-      )
-    )
-    <|> (Right <$> setOpts Nothing)
- where
-  setGHCFooter :: String
-  setGHCFooter = [s|Discussion:
-    Sets the the current GHC version by creating non-versioned
-    symlinks for all ghc binaries of the specified version in
-    "~/.ghcup/bin/<binary>".|]
-
-  setCabalFooter :: String
-  setCabalFooter = [s|Discussion:
-    Sets the the current Cabal version.|]
-
-  setStackFooter :: String
-  setStackFooter = [s|Discussion:
-    Sets the the current Stack version.|]
-
-  setHLSFooter :: String
-  setHLSFooter = [s|Discussion:
-    Sets the the current haskell-language-server version.|]
-
-
-setOpts :: Maybe Tool -> Parser SetOptions
-setOpts tool = SetOptions <$>
-    (fromMaybe SetRecommended <$>
-      optional (setVersionArgument (Just ListInstalled) tool))
-
-setVersionArgument :: Maybe ListCriteria -> Maybe Tool -> Parser SetToolVersion
-setVersionArgument criteria tool =
-  argument (eitherReader setEither)
-    (metavar "VERSION|TAG|next"
-    <> completer (tagCompleter (fromMaybe GHC tool) ["next"])
-    <> foldMap (completer . versionCompleter criteria) tool)
- where
-  setEither s' =
-        parseSet s'
-    <|> second SetToolTag (tagEither s')
-    <|> second SetToolVersion (tVersionEither s')
-  parseSet s' = case fmap toLower s' of
-                  "next" -> Right SetNext
-                  other  -> Left $ "Unknown tag/version " <> other
-
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-setFooter :: String
-setFooter = [s|Discussion:
-  Sets the currently active GHC or cabal version. When no command is given,
-  defaults to setting GHC with the specified version/tag (if no tag
-  is given, sets GHC to 'recommended' version).
-  It is recommended to always specify a subcommand (ghc/cabal/hls/stack).|]
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type SetGHCEffects = '[ FileDoesNotExistError
-                   , NotInstalled
-                   , TagNotFound
-                   , NextVerNotFound
-                   , NoToolVersionSet]
-
-runSetGHC :: (ReaderT env m (VEither SetGHCEffects a) -> m (VEither SetGHCEffects a))
-          -> Excepts SetGHCEffects (ReaderT env m) a
-          -> m (VEither SetGHCEffects a)
-runSetGHC runAppState =
-    runAppState
-    . runE
-      @SetGHCEffects
-
-
-type SetCabalEffects = '[ NotInstalled
-                        , TagNotFound
-                        , NextVerNotFound
-                        , NoToolVersionSet]
-
-runSetCabal :: (ReaderT env m (VEither SetCabalEffects a) -> m (VEither SetCabalEffects a))
-            -> Excepts SetCabalEffects (ReaderT env m) a
-            -> m (VEither SetCabalEffects a)
-runSetCabal runAppState =
-    runAppState
-    . runE
-      @SetCabalEffects
-
-
-type SetHLSEffects = '[ NotInstalled
-                      , TagNotFound
-                      , NextVerNotFound
-                      , NoToolVersionSet]
-
-runSetHLS :: (ReaderT env m (VEither SetHLSEffects a) -> m (VEither SetHLSEffects a))
-          -> Excepts SetHLSEffects (ReaderT env m) a
-          -> m (VEither SetHLSEffects a)
-runSetHLS runAppState =
-    runAppState
-    . runE
-      @SetHLSEffects
-
-
-type SetStackEffects = '[ NotInstalled
-                        , TagNotFound
-                        , NextVerNotFound
-                        , NoToolVersionSet]
-
-runSetStack :: (ReaderT env m (VEither SetStackEffects a) -> m (VEither SetStackEffects a))
-            -> Excepts SetStackEffects (ReaderT env m) a
-            -> m (VEither SetStackEffects a)
-runSetStack runAppState =
-    runAppState
-    . runE
-      @SetStackEffects
-
-
-
-    -------------------
-    --[ Entrypoints ]--
-    -------------------
-
-
-set :: forall m env.
-       ( Monad m
-       , MonadMask m
-       , MonadUnliftIO m
-       , MonadFail m
-       , HasDirs env
-       , HasLog env
-       )
-    => Either SetCommand SetOptions
-    -> (forall eff . ReaderT AppState m (VEither eff GHCTargetVersion)
-        -> m (VEither eff GHCTargetVersion))
-    -> (forall eff. ReaderT env m (VEither eff GHCTargetVersion)
-        -> m (VEither eff GHCTargetVersion))
-    -> (ReaderT LeanAppState m () -> m ())
-    -> m ExitCode
-set setCommand runAppState runLeanAppState runLogger = case setCommand of
-  (Right sopts) -> do
-    runLogger (logWarn "This is an old-style command for setting GHC. Use 'ghcup set ghc' instead.")
-    setGHC' sopts
-  (Left (SetGHC sopts)) -> setGHC' sopts
-  (Left (SetCabal sopts)) -> setCabal' sopts
-  (Left (SetHLS sopts)) -> setHLS' sopts
-  (Left (SetStack sopts)) -> setStack' sopts
-
- where
-  setGHC' :: SetOptions
-          -> m ExitCode
-  setGHC' SetOptions{ sToolVer } =
-    case sToolVer of
-      (SetToolVersion v) -> runSetGHC runLeanAppState (liftE $ setGHC v SetGHCOnly Nothing >> pure v)
-      _ -> runSetGHC runAppState (do
-          v <- liftE $ fst <$> fromVersion' sToolVer GHC
-          liftE $ setGHC v SetGHCOnly Nothing
-        )
-      >>= \case
-            VRight GHCTargetVersion{..} -> do
-              runLogger
-                $ logInfo $
-                    "GHC " <> prettyVer _tvVersion <> " successfully set as default version" <> maybe "" (" for cross target " <>) _tvTarget
-              pure ExitSuccess
-            VLeft e -> do
-              runLogger $ logError $ T.pack $ prettyShow e
-              pure $ ExitFailure 5
-
-
-  setCabal' :: SetOptions
-            -> m ExitCode
-  setCabal' SetOptions{ sToolVer } =
-    case sToolVer of
-      (SetToolVersion v) -> runSetCabal runLeanAppState (liftE $ setCabal (_tvVersion v) >> pure v)
-      _ -> runSetCabal runAppState (do
-          v <- liftE $ fst <$> fromVersion' sToolVer Cabal
-          liftE $ setCabal (_tvVersion v)
-          pure v
-        )
-      >>= \case
-            VRight GHCTargetVersion{..} -> do
-              runLogger
-                $ logInfo $
-                    "Cabal " <> prettyVer _tvVersion <> " successfully set as default version"
-              pure ExitSuccess
-            VLeft  e -> do
-              runLogger $ logError $ T.pack $ prettyShow e
-              pure $ ExitFailure 14
-
-  setHLS' :: SetOptions
-          -> m ExitCode
-  setHLS' SetOptions{ sToolVer } =
-    case sToolVer of
-      (SetToolVersion v) -> runSetHLS runLeanAppState (liftE $ setHLS (_tvVersion v) SetHLSOnly Nothing >> pure v)
-      _ -> runSetHLS runAppState (do
-          v <- liftE $ fst <$> fromVersion' sToolVer HLS
-          liftE $ setHLS (_tvVersion v) SetHLSOnly Nothing
-          pure v
-        )
-      >>= \case
-            VRight GHCTargetVersion{..} -> do
-              runLogger
-                $ logInfo $
-                    "HLS " <> prettyVer _tvVersion <> " successfully set as default version"
-              pure ExitSuccess
-            VLeft  e -> do
-              runLogger $ logError $ T.pack $ prettyShow e
-              pure $ ExitFailure 14
-
-
-  setStack' :: SetOptions
-            -> m ExitCode
-  setStack' SetOptions{ sToolVer } =
-    case sToolVer of
-      (SetToolVersion v) -> runSetStack runLeanAppState (liftE $ setStack (_tvVersion v) >> pure v)
-      _ -> runSetStack runAppState (do
-            v <- liftE $ fst <$> fromVersion' sToolVer Stack
-            liftE $ setStack (_tvVersion v)
-            pure v
-          )
-      >>= \case
-            VRight GHCTargetVersion{..} -> do
-              runLogger
-                $ logInfo $
-                    "Stack " <> prettyVer _tvVersion <> " successfully set as default version"
-              pure ExitSuccess
-            VLeft  e -> do
-              runLogger $ logError $ T.pack $ prettyShow e
-              pure $ ExitFailure 14
--- a/app/ghcup/GHCup/OptParse/ToolRequirements.hs
+++ b/app/ghcup/GHCup/OptParse/ToolRequirements.hs
@@ -1,122 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-{-# LANGUAGE QuasiQuotes #-}
-
-module GHCup.OptParse.ToolRequirements where
-
-
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Utils.Logger
-import           GHCup.Utils.String.QQ
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import qualified Data.Text.IO                  as T
-import Control.Exception.Safe (MonadMask)
-import GHCup.Types.Optics
-import GHCup.Platform
-import GHCup.Utils.Prelude
-import GHCup.Requirements
-import System.IO
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data ToolReqOpts = ToolReqOpts
-  { tlrRaw :: Bool
-  }
-
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-toolReqP :: Parser ToolReqOpts
-toolReqP =
-  ToolReqOpts
-    <$> switch (short 'r' <> long "raw-format" <> help "machine-parsable format")
-
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-toolReqFooter :: String
-toolReqFooter = [s|Discussion:
-  Print tool requirements on the current platform.
-  If you want to pass this to your package manage, use '--raw-format'.|]
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type ToolRequirementsEffects = '[ NoCompatiblePlatform , DistroNotFound , NoToolRequirements ]
-
-
-runToolRequirements :: (ReaderT env m (VEither ToolRequirementsEffects a) -> m (VEither ToolRequirementsEffects a))
-                    -> Excepts ToolRequirementsEffects (ReaderT env m) a
-                    -> m (VEither ToolRequirementsEffects a)
-runToolRequirements runAppState =
-    runAppState
-    . runE
-      @ToolRequirementsEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-toolRequirements :: ( Monad m
-                    , MonadMask m
-                    , MonadUnliftIO m
-                    , MonadFail m
-                    , Alternative m
-                    )
-                 => ToolReqOpts
-                 -> (ReaderT AppState m (VEither ToolRequirementsEffects ()) -> m (VEither ToolRequirementsEffects ()))
-                 -> (ReaderT LeanAppState m () -> m ())
-                 -> m ExitCode
-toolRequirements ToolReqOpts{..} runAppState runLogger = runToolRequirements runAppState (do
-    GHCupInfo { .. } <- lift getGHCupInfo
-    platform' <- liftE getPlatform
-    req       <- getCommonRequirements platform' _toolRequirements ?? NoToolRequirements
-    if tlrRaw
-    then liftIO $ T.hPutStr stdout (rawRequirements req)
-    else liftIO $ T.hPutStr stdout (prettyRequirements req)
-  )
-    >>= \case
-          VRight _ -> pure ExitSuccess
-          VLeft  e -> do
-            runLogger $ logError $ T.pack $ prettyShow e
-            pure $ ExitFailure 12
--- a/app/ghcup/GHCup/OptParse/UnSet.hs
+++ b/app/ghcup/GHCup/OptParse/UnSet.hs
@@ -1,205 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.UnSet where
-
-
-
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Utils.Logger
-import           GHCup.Utils.String.QQ
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Functor
-import           Data.Maybe
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Options.Applicative.Help.Pretty ( text )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import Control.Exception.Safe (MonadMask)
-import GHCup.Types.Optics
-
-
-
-
-    ----------------
-    --[ Commands ]--
-    ----------------
-
-
-data UnsetCommand = UnsetGHC   UnsetOptions
-                  | UnsetCabal UnsetOptions
-                  | UnsetHLS   UnsetOptions
-                  | UnsetStack UnsetOptions
-
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data UnsetOptions = UnsetOptions
-  { sToolVer :: Maybe T.Text -- target platform triple
-  }
-
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-unsetParser :: Parser UnsetCommand
-unsetParser =
-  subparser
-      (  command
-          "ghc"
-          (   UnsetGHC
-          <$> info
-                (unsetOpts <**> helper)
-                (  progDesc "Unset GHC version"
-                <> footerDoc (Just $ text unsetGHCFooter)
-                )
-          )
-      <> command
-           "cabal"
-           (   UnsetCabal
-           <$> info
-                (unsetOpts <**> helper)
-                 (  progDesc "Unset Cabal version"
-                 <> footerDoc (Just $ text unsetCabalFooter)
-                 )
-           )
-      <> command
-           "hls"
-           (   UnsetHLS
-           <$> info
-                 (unsetOpts <**> helper)
-                 (  progDesc "Unset haskell-language-server version"
-                 <> footerDoc (Just $ text unsetHLSFooter)
-                 )
-           )
-      <> command
-           "stack"
-           (   UnsetStack
-           <$> info
-                 (unsetOpts <**> helper)
-                 (  progDesc "Unset stack version"
-                 <> footerDoc (Just $ text unsetStackFooter)
-                 )
-           )
-      )
- where
-  unsetGHCFooter :: String
-  unsetGHCFooter = [s|Discussion:
-    Unsets the the current GHC version. That means there won't
-    be a ~/.ghcup/bin/ghc anymore.|]
-
-  unsetCabalFooter :: String
-  unsetCabalFooter = [s|Discussion:
-    Unsets the the current Cabal version.|]
-
-  unsetStackFooter :: String
-  unsetStackFooter = [s|Discussion:
-    Unsets the the current Stack version.|]
-
-  unsetHLSFooter :: String
-  unsetHLSFooter = [s|Discussion:
-    Unsets the the current haskell-language-server version.|]
-
-
-unsetOpts :: Parser UnsetOptions
-unsetOpts = UnsetOptions . fmap T.pack <$> optional (argument str (metavar "TRIPLE"))
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-unsetFooter :: String
-unsetFooter = [s|Discussion:
-  Unsets the currently active GHC or cabal version.|]
-
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type UnsetEffects = '[ NotInstalled ]
-
-
-runUnsetGHC :: (ReaderT env m (VEither UnsetEffects a) -> m (VEither UnsetEffects a))
-            -> Excepts UnsetEffects (ReaderT env m) a
-            -> m (VEither UnsetEffects a)
-runUnsetGHC runLeanAppState =
-    runLeanAppState
-    . runE
-      @UnsetEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-unset :: ( Monad m
-         , MonadMask m
-         , MonadUnliftIO m
-         , MonadFail m
-         , HasDirs env
-         , HasLog env
-         )
-      => UnsetCommand
-      -> (ReaderT env m (VEither UnsetEffects ())
-          -> m (VEither UnsetEffects ()))
-      -> (ReaderT LeanAppState m () -> m ())
-      -> m ExitCode
-unset unsetCommand runLeanAppState runLogger = case unsetCommand of
-  (UnsetGHC (UnsetOptions triple)) -> runUnsetGHC runLeanAppState (unsetGHC triple)
-        >>= \case
-              VRight _ -> do
-                runLogger $ logInfo "GHC successfully unset"
-                pure ExitSuccess
-              VLeft  e -> do
-                runLogger $ logError $ T.pack $ prettyShow e
-                pure $ ExitFailure 14
-  (UnsetCabal (UnsetOptions _)) -> do
-    void $ runLeanAppState (VRight <$> unsetCabal)
-    runLogger $ logInfo "Cabal successfully unset"
-    pure ExitSuccess
-  (UnsetHLS (UnsetOptions _)) -> do
-    void $ runLeanAppState (VRight <$> unsetHLS)
-    runLogger $ logInfo "HLS successfully unset"
-    pure ExitSuccess
-  (UnsetStack (UnsetOptions _)) -> do
-    void $ runLeanAppState (VRight <$> unsetStack)
-    runLogger $ logInfo "Stack successfully unset"
-    pure ExitSuccess
--- a/app/ghcup/GHCup/OptParse/Upgrade.hs
+++ b/app/ghcup/GHCup/OptParse/Upgrade.hs
@@ -1,151 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.Upgrade where
-
-
-
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Utils.Logger
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Functor
-import           Data.Maybe
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import Control.Exception.Safe (MonadMask)
-import System.Environment
-import GHCup.Utils
-import System.FilePath
-import GHCup.Types.Optics
-import Data.Versions         hiding (str)
-
-
-
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data UpgradeOpts = UpgradeInplace
-                 | UpgradeAt FilePath
-                 | UpgradeGHCupDir
-                 deriving Show
-
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-upgradeOptsP :: Parser UpgradeOpts
-upgradeOptsP =
-  flag'
-      UpgradeInplace
-      (short 'i' <> long "inplace" <> help
-        "Upgrade ghcup in-place (wherever it's at)"
-      )
-    <|> (   UpgradeAt
-        <$> option
-              str
-              (short 't' <> long "target" <> metavar "TARGET_DIR" <> help
-                "Absolute filepath to write ghcup into"
-                <> completer (bashCompleter "file")
-              )
-        )
-    <|> pure UpgradeGHCupDir
-
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type UpgradeEffects = '[ DigestError
-                       , GPGError
-                       , NoDownload
-                       , NoUpdate
-                       , FileDoesNotExistError
-                       , CopyError
-                       , DownloadFailed
-                       ]
-
-
-runUpgrade :: MonadUnliftIO m
-           => (ReaderT AppState m (VEither UpgradeEffects a) -> m (VEither UpgradeEffects a))
-           -> Excepts UpgradeEffects (ResourceT (ReaderT AppState m)) a
-           -> m (VEither UpgradeEffects a)
-runUpgrade runAppState =
-  runAppState
-  . runResourceT
-  . runE
-    @UpgradeEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-upgrade :: ( Monad m
-           , MonadMask m
-           , MonadUnliftIO m
-           , MonadFail m
-           )
-        => UpgradeOpts
-        -> Bool
-        -> Dirs
-        -> (forall a. ReaderT AppState m (VEither UpgradeEffects a) -> m (VEither UpgradeEffects a))
-        -> (ReaderT LeanAppState m () -> m ())
-        -> m ExitCode
-upgrade uOpts force' Dirs{..} runAppState runLogger = do
-  target <- case uOpts of
-    UpgradeInplace  -> Just <$> liftIO getExecutablePath
-    (UpgradeAt p)   -> pure $ Just p
-    UpgradeGHCupDir -> pure (Just (binDir </> "ghcup" <> exeExt))
-
-  runUpgrade runAppState (do
-    v' <- liftE $ upgradeGHCup target force'
-    GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-    pure (v', dls)
-    ) >>= \case
-      VRight (v', dls) -> do
-        let pretty_v = prettyVer v'
-        let vi = fromJust $ snd <$> getLatest dls GHCup
-        runLogger $ logInfo $
-          "Successfully upgraded GHCup to version " <> pretty_v
-        forM_ (_viPostInstall vi) $ \msg ->
-          runLogger $ logInfo msg
-        pure ExitSuccess
-      VLeft (V NoUpdate) -> do
-        runLogger $ logWarn "No GHCup update available"
-        pure ExitSuccess
-      VLeft e -> do
-        runLogger $ logError $ T.pack $ prettyShow e
-        pure $ ExitFailure 11
--- a/app/ghcup/GHCup/OptParse/Whereis.hs
+++ b/app/ghcup/GHCup/OptParse/Whereis.hs
@@ -1,319 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.Whereis where
-
-
-
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.OptParse.Common
-import           GHCup.Types
-import           GHCup.Utils.Logger
-import           GHCup.Utils.String.QQ
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Functor
-import           Data.Maybe
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Options.Applicative.Help.Pretty ( text )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-
-import qualified Data.Text                     as T
-import Control.Exception.Safe (MonadMask)
-import System.FilePath (takeDirectory)
-import GHCup.Types.Optics
-
-
-
-
-    ----------------
-    --[ Commands ]--
-    ----------------
-
-
-data WhereisCommand = WhereisTool Tool (Maybe ToolVersion)
-                    | WhereisBaseDir
-                    | WhereisBinDir
-                    | WhereisCacheDir
-                    | WhereisLogsDir
-                    | WhereisConfDir
-
-
-
-
-
-    ---------------
-    --[ Options ]--
-    ---------------
-
-
-data WhereisOptions = WhereisOptions {
-   directory :: Bool
-}
-
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-whereisP :: Parser WhereisCommand
-whereisP = subparser
-  (commandGroup "Tools locations:" <> 
-    command
-      "ghc"
-      (WhereisTool GHC <$> info
-        ( optional (toolVersionArgument Nothing (Just GHC)) <**> helper )
-        ( progDesc "Get GHC location"
-        <> footerDoc (Just $ text whereisGHCFooter ))
-      )
-      <>
-     command
-      "cabal"
-      (WhereisTool Cabal <$> info
-        ( optional (toolVersionArgument Nothing (Just Cabal)) <**> helper )
-        ( progDesc "Get cabal location"
-        <> footerDoc (Just $ text whereisCabalFooter ))
-      )
-      <>
-     command
-      "hls"
-      (WhereisTool HLS <$> info
-        ( optional (toolVersionArgument Nothing (Just HLS)) <**> helper )
-        ( progDesc "Get HLS location"
-        <> footerDoc (Just $ text whereisHLSFooter ))
-      )
-      <>
-     command
-      "stack"
-      (WhereisTool Stack <$> info
-        ( optional (toolVersionArgument Nothing (Just Stack)) <**> helper )
-        ( progDesc "Get stack location"
-        <> footerDoc (Just $ text whereisStackFooter ))
-      )
-      <>
-     command
-      "ghcup"
-      (WhereisTool GHCup <$> info ( pure Nothing <**> helper ) ( progDesc "Get ghcup location" ))
-    ) <|> subparser ( commandGroup "Directory locations:"
-      <>
-     command
-      "basedir"
-      (info (pure WhereisBaseDir <**> helper)
-            ( progDesc "Get ghcup base directory location" )
-      )
-      <>
-     command
-      "bindir"
-      (info (pure WhereisBinDir <**> helper)
-            ( progDesc "Get ghcup binary directory location" )
-      )
-      <>
-     command
-      "cachedir"
-      (info (pure WhereisCacheDir <**> helper)
-            ( progDesc "Get ghcup cache directory location" )
-      )
-      <>
-     command
-      "logsdir"
-      (info (pure WhereisLogsDir <**> helper)
-            ( progDesc "Get ghcup logs directory location" )
-      )
-      <>
-     command
-      "confdir"
-      (info (pure WhereisConfDir <**> helper)
-            ( progDesc "Get ghcup config directory location" )
-      )
-  )
- where
-  whereisGHCFooter = [s|Discussion:
-  Finds the location of a GHC executable, which usually resides in
-  a self-contained "~/.ghcup/ghc/<ghcver>" directory.
-
-Examples:
-  # outputs ~/.ghcup/ghc/8.10.5/bin/ghc.exe
-  ghcup whereis ghc 8.10.5
-  # outputs ~/.ghcup/ghc/8.10.5/bin/
-  ghcup whereis --directory ghc 8.10.5 |]
-
-  whereisCabalFooter = [s|Discussion:
-  Finds the location of a Cabal executable, which usually resides in
-  "~/.ghcup/bin/".
-
-Examples:
-  # outputs ~/.ghcup/bin/cabal-3.4.0.0
-  ghcup whereis cabal 3.4.0.0
-  # outputs ~/.ghcup/bin
-  ghcup whereis --directory cabal 3.4.0.0|]
-
-  whereisHLSFooter = [s|Discussion:
-  Finds the location of a HLS executable, which usually resides in
-  "~/.ghcup/bin/".
-
-Examples:
-  # outputs ~/.ghcup/bin/haskell-language-server-wrapper-1.2.0
-  ghcup whereis hls 1.2.0
-  # outputs ~/.ghcup/bin/
-  ghcup whereis --directory hls 1.2.0|]
-
-  whereisStackFooter = [s|Discussion:
-  Finds the location of a stack executable, which usually resides in
-  "~/.ghcup/bin/".
-
-Examples:
-  # outputs ~/.ghcup/bin/stack-2.7.1
-  ghcup whereis stack 2.7.1
-  # outputs ~/.ghcup/bin/
-  ghcup whereis --directory stack 2.7.1|]
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-whereisFooter :: String
-whereisFooter = [s|Discussion:
-  Finds the location of a tool. For GHC, this is the ghc binary, that
-  usually resides in a self-contained "~/.ghcup/ghc/<ghcver>" directory.
-  For cabal/stack/hls this the binary usually at "~/.ghcup/bin/<tool>-<ver>".
-
-Examples:
-  # outputs ~/.ghcup/ghc/8.10.5/bin/ghc.exe
-  ghcup whereis ghc 8.10.5
-  # outputs ~/.ghcup/ghc/8.10.5/bin/
-  ghcup whereis --directory ghc 8.10.5
-  # outputs ~/.ghcup/bin/cabal-3.4.0.0
-  ghcup whereis cabal 3.4.0.0
-  # outputs ~/.ghcup/bin/
-  ghcup whereis --directory cabal 3.4.0.0|]
-
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type WhereisEffects = '[ NotInstalled
-                , NoToolVersionSet
-                , NextVerNotFound
-                , TagNotFound
-                ]
-
-
-runLeanWhereIs :: (MonadUnliftIO m, MonadIO m)
-               => LeanAppState
-               -> Excepts WhereisEffects (ReaderT LeanAppState m) a
-               -> m (VEither WhereisEffects a)
-runLeanWhereIs leanAppstate =
-    -- Don't use runLeanAppState here, which is disabled on windows.
-    -- This is the only command on all platforms that doesn't need full appstate.
-    flip runReaderT leanAppstate
-    . runE
-      @WhereisEffects
-
-
-runWhereIs :: (MonadUnliftIO m, MonadIO m)
-           => (ReaderT AppState m (VEither WhereisEffects a) -> m (VEither WhereisEffects a))
-           -> Excepts WhereisEffects (ReaderT AppState m) a
-           -> m (VEither WhereisEffects a)
-runWhereIs runAppState =
-    runAppState
-    . runE
-      @WhereisEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-whereis :: ( Monad m
-         , MonadMask m
-         , MonadUnliftIO m
-         , MonadFail m
-         )
-      => WhereisCommand
-      -> WhereisOptions
-      -> (forall a. ReaderT AppState m (VEither WhereisEffects a) -> m (VEither WhereisEffects a))
-      -> LeanAppState
-      -> (ReaderT LeanAppState m () -> m ())
-      -> m ExitCode
-whereis whereisCommand whereisOptions runAppState leanAppstate runLogger = do
-  Dirs{ .. }  <- runReaderT getDirs leanAppstate
-  case (whereisCommand, whereisOptions) of
-    (WhereisTool tool (Just (ToolVersion v)), WhereisOptions{..}) ->
-      runLeanWhereIs leanAppstate (do
-        loc <- liftE $ whereIsTool tool v
-        if directory
-        then pure $ takeDirectory loc
-        else pure loc
-        )
-        >>= \case
-              VRight r -> do
-                liftIO $ putStr r
-                pure ExitSuccess
-              VLeft e -> do
-                runLogger $ logError $ T.pack $ prettyShow e
-                pure $ ExitFailure 30
-
-    (WhereisTool tool whereVer, WhereisOptions{..}) -> do
-      runWhereIs runAppState (do
-        (v, _) <- liftE $ fromVersion whereVer tool
-        loc <- liftE $ whereIsTool tool v
-        if directory
-        then pure $ takeDirectory loc
-        else pure loc
-        )
-        >>= \case
-              VRight r -> do
-                liftIO $ putStr r
-                pure ExitSuccess
-              VLeft e -> do
-                runLogger $ logError $ T.pack $ prettyShow e
-                pure $ ExitFailure 30
-
-    (WhereisBaseDir, _) -> do
-      liftIO $ putStr baseDir
-      pure ExitSuccess
-
-    (WhereisBinDir, _) -> do
-      liftIO $ putStr binDir
-      pure ExitSuccess
-
-    (WhereisCacheDir, _) -> do
-      liftIO $ putStr cacheDir
-      pure ExitSuccess
-
-    (WhereisLogsDir, _) -> do
-      liftIO $ putStr logsDir
-      pure ExitSuccess
-
-    (WhereisConfDir, _) -> do
-      liftIO $ putStr confDir
-      pure ExitSuccess
--- a/app/ghcup/Main.hs
+++ b/app/ghcup/Main.hs
--- a/484
+++ b/484
@@ -0,0 +1,484 @@
+#!/bin/sh
+
+# Main settings:
+#   * BOOTSTRAP_HASKELL_NONINTERACTIVE - any nonzero value for noninteractive installation
+#   * BOOTSTRAP_HASKELL_NO_UPGRADE - any nonzero value to not trigger the upgrade
+#   * GHCUP_USE_XDG_DIRS - any nonzero value to respect The XDG Base Directory Specification
+#   * BOOTSTRAP_HASKELL_VERBOSE - any nonzero value for more verbose installation
+#   * BOOTSTRAP_HASKELL_GHC_VERSION
+#   * BOOTSTRAP_HASKELL_CABAL_VERSION
+
+# License: LGPL-3.0
+
+
+# safety subshell to avoid executing anything in case this script is not downloaded properly
+(
+
+plat="$(uname -s)"
+arch=$(uname -m)
+ghver="0.1.15.2"
+base_url="https://downloads.haskell.org/~ghcup"
+
+case "${plat}" in
+        MSYS*|MINGW*)
+			: "${GHCUP_INSTALL_BASE_PREFIX:=/c}"
+			GHCUP_DIR=$(cygpath -u "${GHCUP_INSTALL_BASE_PREFIX}/ghcup")
+			GHCUP_BIN=$(cygpath -u "${GHCUP_INSTALL_BASE_PREFIX}/ghcup/bin")
+			: "${GHCUP_MSYS2:=${GHCUP_DIR}/msys64}"
+			;;
+		*)
+			: "${GHCUP_INSTALL_BASE_PREFIX:=$HOME}"
+			export GHCUP_USE_XDG_DIRS
+
+			if [ -n "${GHCUP_USE_XDG_DIRS}" ] ; then
+				GHCUP_DIR=${XDG_DATA_HOME:=$HOME/.local/share}/ghcup
+				GHCUP_BIN=${XDG_BIN_HOME:=$HOME/.local/bin}
+			else
+				GHCUP_DIR=${GHCUP_INSTALL_BASE_PREFIX}/.ghcup
+				GHCUP_BIN=${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/bin
+			fi
+			;;
+esac
+
+: "${BOOTSTRAP_HASKELL_GHC_VERSION:=recommended}"
+: "${BOOTSTRAP_HASKELL_CABAL_VERSION:=recommended}"
+
+
+die() {
+    (>&2 printf "\\033[0;31m%s\\033[0m\\n" "$1")
+    exit 2
+}
+
+warn() {
+	case "${plat}" in
+			MSYS*|MINGW*)
+				echo -e "\\033[0;35m$1\\033[0m"
+				;;
+			*)
+				printf "\\033[0;35m%s\\033[0m\\n" "$1"
+				;;
+	esac
+}
+
+edo() {
+    "$@" || die "\"$*\" failed!"
+}
+
+eghcup() {
+	edo _eghcup "$@"
+}
+
+_eghcup() {
+	if [ -n "${BOOTSTRAP_HASKELL_YAML}" ] ; then
+		args="-s ${BOOTSTRAP_HASKELL_YAML}"
+	fi 
+    if [ -z "${BOOTSTRAP_HASKELL_VERBOSE}" ] ; then
+        "${GHCUP_BIN}/ghcup" ${args} "$@"
+    else
+        "${GHCUP_BIN}/ghcup" ${args} --verbose "$@"
+    fi
+}
+
+_done() {
+	case "${plat}" in
+			MSYS*|MINGW*)
+				echo
+				echo "All done!"
+				echo
+				echo "In a new powershell or cmd.exe session, now you can..."
+				echo
+				echo "Start a simple repl via:"
+				echo "  ghci"
+				echo
+				echo "Start a new haskell project in the current directory via:"
+				echo "  cabal init --interactive"
+				echo
+				echo "Install other GHC versions and tools via:"
+				echo "  ghcup list"
+				echo "  ghcup install <tool> <version>"
+				echo
+				echo "To install system libraries and update msys2/mingw64,"
+				echo "open the \"Mingw haskell shell\""
+				echo "and the \"Mingw package management docs\""
+				echo "desktop shortcuts."
+				;;
+			*)
+				echo
+				echo "All done!"
+				echo
+				echo "To start a simple repl, run:"
+				echo "  ghci"
+				echo
+				echo "To start a new haskell project in the current directory, run:"
+				echo "  cabal init --interactive"
+				echo
+				echo "To install other GHC versions and tools, run:"
+				echo "  ghcup tui"
+				;;
+
+	esac
+
+
+	exit 0
+}
+
+download_ghcup() {
+
+    case "${plat}" in
+        "linux"|"Linux")
+			case "${arch}" in
+				x86_64|amd64)
+					# we could be in a 32bit docker container, in which
+					# case uname doesn't give us what we want
+					if [ "$(getconf LONG_BIT)" = "32" ] ; then
+						_url=${base_url}/${ghver}/i386-linux-ghcup-${ghver}
+					elif [ "$(getconf LONG_BIT)" = "64" ] ; then
+						_url=${base_url}/${ghver}/x86_64-linux-ghcup-${ghver}
+					else
+						die "Unknown long bit size: $(getconf LONG_BIT)"
+					fi
+					;;
+				i*86)
+					_url=${base_url}/${ghver}/i386-linux-ghcup-${ghver}
+					;;
+				armv7*)
+					_url=${base_url}/${ghver}/armv7-linux-ghcup-${ghver}
+					;;
+				aarch64|arm64|armv8l)
+					_url=${base_url}/${ghver}/aarch64-linux-ghcup-${ghver}
+					;;
+				*) die "Unknown architecture: ${arch}"
+					;;
+			esac
+			;;
+        "FreeBSD"|"freebsd")
+			case "${arch}" in
+				x86_64|amd64)
+					;;
+				i*86)
+					die "i386 currently not supported!"
+					;;
+				*) die "Unknown architecture: ${arch}"
+					;;
+			esac
+			_url=${base_url}/${ghver}/x86_64-portbld-freebsd-ghcup-${ghver}
+            ;;
+        "Darwin"|"darwin")
+			case "${arch}" in
+				x86_64|amd64)
+					_url=${base_url}/${ghver}/x86_64-apple-darwin-ghcup-${ghver}
+					;;
+				aarch64|arm64|armv8l)
+					_url=${base_url}/${ghver}/aarch64-apple-darwin-ghcup-${ghver}
+					;;
+				i*86)
+					die "i386 currently not supported!"
+					;;
+				*) die "Unknown architecture: ${arch}"
+					;;
+			esac
+			;;
+        MSYS*|MINGW*)
+			case "${arch}" in
+				x86_64|amd64)
+					_url=${base_url}/${ghver}/x86_64-mingw64-ghcup-${ghver}.exe
+					;;
+				*) die "Unknown architecture: ${arch}"
+					;;
+			esac
+			;;
+        *) die "Unknown platform: ${plat}"
+			;;
+    esac
+    case "${plat}" in
+        MSYS*|MINGW*)
+			edo curl -Lf "${_url}" > "${GHCUP_BIN}"/ghcup.exe
+			edo chmod +x "${GHCUP_BIN}"/ghcup.exe
+			;;
+		*)
+			edo curl -Lf "${_url}" > "${GHCUP_BIN}"/ghcup
+			edo chmod +x "${GHCUP_BIN}"/ghcup
+			;;
+	esac
+
+  edo mkdir -p "${GHCUP_DIR}"
+	cat <<-EOF > "${GHCUP_DIR}"/env || die "Failed to create env file"
+		export PATH="\$HOME/.cabal/bin:${GHCUP_BIN}:\$PATH"
+		EOF
+	# shellcheck disable=SC1090
+    edo . "${GHCUP_DIR}"/env
+    eghcup upgrade
+}
+
+adjust_bashrc() {
+	case $SHELL in
+		*/zsh) # login shell is zsh
+			GHCUP_PROFILE_FILE="$HOME/.zshrc"
+			MY_SHELL="zsh" ;;
+		*/bash) # login shell is bash
+			GHCUP_PROFILE_FILE="$HOME/.bashrc"
+			MY_SHELL="bash" ;;
+		*/sh) # login shell is sh, but might be a symlink to bash or zsh
+			if [ -n "${BASH}" ] ; then
+				GHCUP_PROFILE_FILE="$HOME/.bashrc"
+				MY_SHELL="bash"
+			elif [ -n "${ZSH_VERSION}" ] ; then
+				GHCUP_PROFILE_FILE="$HOME/.zshrc"
+				MY_SHELL="zsh"
+			else
+				return
+			fi
+			;;
+		*/fish) # login shell is fish
+			GHCUP_PROFILE_FILE="$HOME/.config/fish/config.fish"
+			MY_SHELL="fish" ;;
+		*) return ;;
+	esac
+
+
+	warn ""
+	warn "Detected ${MY_SHELL} shell on your system..."
+	warn "If you want ghcup to automatically add the required PATH variable to \"${GHCUP_PROFILE_FILE}\""
+	warn ""
+	warn "[Y] Yes  [N] No  [?] Help (default is \"Y\")."
+	warn ""
+
+	while true; do
+		if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+			read -r next_answer </dev/tty
+		else
+			next_answer="yes"
+		fi
+
+		case $next_answer in
+			[Nn]*)
+				return ;;
+			[Yy]* | "")
+				case $MY_SHELL in
+					"") break ;;
+					fish)
+							mkdir -p "${GHCUP_PROFILE_FILE%/*}"
+							sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
+							echo "set -q GHCUP_INSTALL_BASE_PREFIX[1]; or set GHCUP_INSTALL_BASE_PREFIX \$HOME ; test -f $GHCUP_DIR/env ; and set -gx PATH \$HOME/.cabal/bin $GHCUP_BIN \$PATH # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+						break ;;
+					bash)
+						sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
+						echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+						case "${plat}" in
+							"Darwin"|"darwin")
+								if ! grep -q "ghcup-env" "${HOME}/.bash_profile" ; then
+									echo "[[ -f ~/.bashrc ]] && source ~/.bashrc # ghcup-env" >> "${HOME}/.bash_profile"
+								fi
+								;;
+						esac
+						break ;;
+
+					zsh)
+						sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
+						echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+						break ;;
+				esac
+				warn "OK! ${GHCUP_PROFILE_FILE} has been modified. Restart your terminal for the changes to take effect,"
+				warn "or type \"source ${GHCUP_DIR}/env\" to apply them in your current terminal session."
+				return
+				;;
+			*)
+				echo "Possible choices are:"
+				echo
+				echo "Y - Yes, update my \"${GHCUP_PROFILE_FILE}\" (default)"
+				echo "N - No, don't mess with my configuration"
+				echo
+				echo "Please make your choice and press ENTER."
+				;;
+		esac
+	done
+}
+
+
+echo
+echo "Welcome to Haskell!"
+echo
+echo "This script will download and install the following binaries:"
+echo "  * ghcup - The Haskell toolchain installer"
+echo "  * ghc   - The Glasgow Haskell Compiler"
+echo "  * cabal - The Cabal build tool for managing Haskell software"
+echo "  * stack - (optional) A cross-platform program for developing Haskell projects"
+echo "  * hls   - (optional) A language server for developers to integrate with their editor/IDE"
+echo
+if [ -z "${GHCUP_USE_XDG_DIRS}" ] ; then
+	echo "ghcup installs only into the following directory,"
+    echo "which can be removed anytime:"
+	case "${plat}" in
+			MSYS*|MINGW*)
+				echo "  $(cygpath -w "$GHCUP_DIR")"
+				;;
+			*)
+				echo "  $GHCUP_DIR"
+				;;
+	esac
+else
+	echo "ghcup installs into XDG directories as long as"
+    echo "'GHCUP_USE_XDG_DIRS' is set."
+fi
+echo
+
+if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+    warn "Press ENTER to proceed or ctrl-c to abort."
+    warn "Note that this script can be re-run at any given time."
+    echo
+    # Wait for user input to continue.
+    # shellcheck disable=SC2034
+    read -r answer </dev/tty
+fi
+
+edo mkdir -p "${GHCUP_BIN}"
+
+if command -V "ghcup" >/dev/null 2>&1 ; then
+    if [ -z "${BOOTSTRAP_HASKELL_NO_UPGRADE}" ] ; then
+        _eghcup upgrade || download_ghcup
+    fi
+else
+	download_ghcup
+fi
+
+echo
+echo "$(if [ -n "${BOOTSTRAP_HASKELL_YAML}" ] ; then ghcup -s "${BOOTSTRAP_HASKELL_YAML}" tool-requirements ; else ghcup tool-requirements ; fi)"
+echo
+
+if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+    warn "Press ENTER to proceed or ctrl-c to abort."
+    warn "Installation may take a while."
+    echo
+
+    # Wait for user input to continue.
+    # shellcheck disable=SC2034
+    read -r answer </dev/tty
+fi
+
+eghcup --cache install ghc "${BOOTSTRAP_HASKELL_GHC_VERSION}"
+
+eghcup set ghc "${BOOTSTRAP_HASKELL_GHC_VERSION}"
+eghcup --cache install cabal "${BOOTSTRAP_HASKELL_CABAL_VERSION}"
+
+adjust_cabal_config() {
+	edo cabal user-config -a "extra-prog-path: $(cygpath -w "$GHCUP_BIN"), $(cygpath -w "$HOME"/AppData/Roaming/cabal/bin), $(cygpath -w "$GHCUP_MSYS2"/usr/bin), $(cygpath -w "$GHCUP_MSYS2"/mingw64/bin)" -a "extra-include-dirs: $(cygpath -w "$GHCUP_MSYS2"/mingw64/include)" -a "extra-lib-dirs: $(cygpath -w "$GHCUP_MSYS2"/mingw64/lib)" -f init
+}
+
+case "${plat}" in
+        MSYS*|MINGW*)
+			if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+				warn "Create an initial cabal.config including relevant msys2 paths (recommended)?"
+				warn "[Y] Yes  [N] No  [?] Help (default is \"Y\")."
+				echo
+				while true; do
+					read -r mingw_answer </dev/tty
+
+					case $mingw_answer in
+						[Yy]* | "")
+							adjust_cabal_config
+							break ;;
+						[Nn]*)
+							echo "Make sure that your global cabal.config references the correct mingw64 paths (extra-prog-path, extra-include-dirs and extra-lib-dirs)."
+							echo "And set the environment variable GHCUP_MSYS2 to the root path of your msys2 installation."
+							sleep 5
+							break ;;
+						*)
+							echo "Possible choices are:"
+							echo
+							echo "Y - Yes, create a cabal.config with pre-set paths to msys2/mingw64 (default)"
+							echo "N - No, leave the current/default cabal config untouched"
+							echo
+							echo "Please make your choice and press ENTER."
+							;;
+					esac
+				done
+			else
+				adjust_cabal_config
+			fi
+			;;
+esac
+
+
+edo cabal new-update
+
+
+if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+	warn "Do you want to install haskell-language-server (HLS) now?"
+	warn "HLS is a language-server that provides IDE-like functionality"
+	warn "and can integrate with different editors, such as Vim, Emacs, VS Code, Atom, ..."
+	warn "Also see https://github.com/haskell/haskell-language-server/blob/master/README.md"
+	warn ""
+	warn "[Y] Yes  [N] No  [?] Help (default is \"N\")."
+	warn ""
+
+	while true; do
+		read -r hls_answer </dev/tty
+
+		case $hls_answer in
+			[Yy]*)
+				_eghcup --cache install hls || warn "HLS installation failed, continuing anyway"
+				break ;;
+			[Nn]* | "")
+				break ;;
+			*)
+				echo "Possible choices are:"
+				echo
+				echo "Y - Yes, install the haskell-langauge-server"
+				echo "N - No, don't install anything more (default)"
+				echo
+				echo "Please make your choice and press ENTER."
+				;;
+		esac
+	done
+
+	warn "Do you want to install stack now?"
+	warn "Stack is a haskell build tool similar to cabal that is used by some projects."
+	warn "Also see https://docs.haskellstack.org/"
+	warn ""
+	warn "[Y] Yes  [N] No  [?] Help (default is \"N\")."
+	warn ""
+
+	while true; do
+		read -r stack_answer </dev/tty
+
+		case $stack_answer in
+			[Yy]*)
+				_eghcup --cache install stack || warn "Stack installation failed, continuing anyway"
+				break ;;
+			[Nn]* | "")
+				break ;;
+			*)
+				echo "Possible choices are:"
+				echo
+				echo "Y - Yes, install stack"
+				echo "N - No, don't install anything more (default)"
+				echo
+				echo "Please make your choice and press ENTER."
+				;;
+		esac
+	done
+fi
+
+# short-circuit script based on platform
+case "${plat}" in
+        MSYS*|MINGW*)
+			# For windows we always adjust bashrc, since it's inside msys2
+			adjust_bashrc
+			;;
+		*)
+        	if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+				echo "In order to run ghc and cabal, you need to adjust your PATH variable."
+				echo "You may want to source '$GHCUP_DIR/env' in your shell"
+				echo "configuration to do so (e.g. ~/.bashrc)."
+
+				adjust_bashrc
+			fi
+			;;
+esac
+
+_done
+
+)
+
+# vim: tabstop=4 shiftwidth=4 expandtab
+
--- a/scripts/bootstrap/bootstrap-haskell.ps1
+++ b/scripts/bootstrap/bootstrap-haskell.ps1
@@ -11,32 +11,22 @@
    * cabal - The Cabal build tool for managing Haskell software"
    * stack - (optional) A cross-platform program for developing Haskell projects"
    * hls   - (optional) A language server for developers to integrate with their editor/IDE"
-    
-	By default, the installation is non-interactive, unless you run it with 'Interactive $true'.
 #>
 param (
    # Run an interactive installation
    [switch]$Interactive,
-    # Do minimal installation of ghcup and msys2 only
-    [switch]$Minimal,
-    # Run the final bootstrap script via 'bash' instead of a full newly spawned msys2 shell
-    [switch]$InBash,
-    # Overwrite (or rather backup) a previous install
-    [switch]$Overwrite,
-    # Skip adjusting cabal.config with mingw paths
-    [switch]$NoAdjustCabalConfig,
-    # Whether to install stack as well
-    [switch]$InstallStack,
-    # Whether to install hls as well
-    [switch]$InstallHLS,
    # Specify the install root (default: 'C:\')
    [string]$InstallDir,
-    # Specify the bootstrap url (default: 'https://www.haskell.org/ghcup/sh/bootstrap-haskell')
-    [string]$BootstrapUrl,
    # Instead of installing a new MSys2, use an existing installation
    [string]$ExistingMsys2Dir,
    # Specify the cabal root directory (default: '$InstallDir\cabal')
-    [string]$CabalDir
+    [string]$CabalDir,
+    # Overwrite (or rather backup) a previous install
+    [switch]$Overwrite,
+    # Specify the bootstrap url (default: 'https://www.haskell.org/ghcup/sh/bootstrap-haskell')
+    [string]$BootstrapUrl,
+    # Run the final bootstrap script via 'bash' instead of a full newly spawned msys2 shell
+    [switch]$InBash
 )

 $Silent = !$Interactive
@@ -47,30 +37,14 @@ function Print-Msg {
 }

 function Create-Shortcut {
-    param ( [Parameter(Mandatory=$true,HelpMessage='Target path')][string]$SourceExe
-          , [Parameter(Mandatory=$true,HelpMessage='Arguments to the path/exe')][AllowEmptyString()]$ArgumentsToSourceExe
-          , [Parameter(Mandatory=$true,HelpMessage='The destination of the desktop link')][string]$DestinationPath
-          , [Parameter(Mandatory=$true,HelpMessage='Temporary path to create the link at')][string]$TempPath
-           )
-	# we save to a temp dir first due to
-	# https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/267
-    $DesktopDir = [Environment]::GetFolderPath("Desktop")
-    if (!(Test-Path -Path ('{0}' -f $TempPath))) {
-      New-Item -Path $TempPath -ItemType "directory"
-    }
-    $TmpFile = ('{0}\{1}' -f $TempPath, $DestinationPath)
-    $FinalDest = ('{0}\{1}' -f $DesktopDir, $DestinationPath)
+    param ( [Parameter(Mandatory=$true,HelpMessage='Target path')][string]$SourceExe, [Parameter(Mandatory=$true,HelpMessage='Arguments to the path/exe')][AllowEmptyString()]$ArgumentsToSourceExe, [Parameter(Mandatory=$true,HelpMessage='The destination of the desktop link')][string]$DestinationPath )
    $WshShell = New-Object -comObject WScript.Shell
-    $Shortcut = $WshShell.CreateShortcut($TmpFile)
+    $Shortcut = $WshShell.CreateShortcut($DestinationPath)
    $Shortcut.TargetPath = $SourceExe
    if($ArgumentsToSourceExe) {
      $Shortcut.Arguments = $ArgumentsToSourceExe
    }
    $Shortcut.Save()
-    if ((Test-Path -Path ('{0}' -f $FinalDest))) {
-      Remove-Item -LiteralPath $FinalDest -Force
-    }
-    Move-Item -LiteralPath $TmpFile -Destination $FinalDest
 }

 function Add-EnvPath {
@@ -178,29 +152,9 @@ $ErrorActionPreference = 'Stop'

 $GhcupBasePrefixEnv = [System.Environment]::GetEnvironmentVariable('GHCUP_INSTALL_BASE_PREFIX', 'user')

-if (Get-Command -Name 'chocolatey.exe' -ErrorAction SilentlyContinue) {
-  if (!($Silent)) {
-    Print-Msg -color Magenta -msg (@'
-Chocolatey was detected on your system. It is capable of installing the Haskell toolchain as well.
-If you want to rather use that instead of ghcup, abort the installation and run the following at an
-elevated command prompt:
-    choco install haskell-dev
-    refreshenv
-
-'@)
-    $decision = $Host.UI.PromptForChoice(''
-    , 'Continue with GHCup installation?'
-    , [System.Management.Automation.Host.ChoiceDescription[]] @('&Continue'
-        '&Abort'), 0)
-    if ($decision -eq 1) {
-      Exit 0
-    }
-  }
-}
-
 if ($GhcupBasePrefixEnv) {
  $defaultGhcupBasePrefix = $GhcupBasePrefixEnv
-} elseif (!($InstallDir)) {
+} else {
  $partitions = Get-CimInstance win32_logicaldisk
  $defaultGhcupBasePrefix = $null
  foreach ($p in $partitions){
@@ -224,49 +178,27 @@ if ($GhcupBasePrefixEnv) {
  }
 }

-# ask for base install prefix
 if ($Silent -and !($InstallDir)) {
  $GhcupBasePrefix = $defaultGhcupBasePrefix
 } elseif ($InstallDir) {
  if (!(Test-Path -LiteralPath ('{0}' -f $InstallDir) -IsValid)) {
-    Print-Msg -color Red -msg "Not a valid directory! (InstallDir)"
+    Print-Msg -color Red -msg "Not a valid directory!"
    Exit 1
  } elseif (!(Split-Path -IsAbsolute -Path "$InstallDir")) {
-    Print-Msg -color Red -msg "Non-absolute Path specified! (InstallDir)"
+    Print-Msg -color Red -msg "Non-absolute Path specified!"
    Exit 1
  } else {
    $GhcupBasePrefix = $InstallDir
  }
 } else {
  while ($true) {
-	Print-Msg -color Magenta -msg (@'
-Welcome to Haskell!
-
-This script will download and install the following programs:
-  * ghcup - The Haskell toolchain installer
-  * ghc   - The Glasgow Haskell Compiler
-  * msys2 - A linux-style toolchain environment required for many operations
-  * cabal - The Cabal build tool for managing Haskell software
-  * stack - (optional) A cross-platform program for developing Haskell projects
-  * hls   - (optional) A language server for developers to integrate with their editor/IDE
-
-Please not that ANTIVIRUS may interfere with the installation. If you experience problems, consider
-disabling it temporarily.
-
-Where to install to (this should be a short Path, preferably a Drive like 'C:\')?
-If you accept this path, binaries will be installed into '{0}ghcup\bin' and msys2 into '{0}ghcup\msys64'.
-Press enter to accept the default [{0}]:
-
-'@ -f $defaultGhcupBasePrefix)
-
-
+    Print-Msg -color Magenta -msg ('Where to install to (this should be a short Path, preferably a Drive like ''C:\''){1}Press enter to accept the default [{0}]:' -f $defaultGhcupBasePrefix, "`n")
    $basePrefixPrompt = Read-Host
    $GhcupBasePrefix = ($defaultGhcupBasePrefix,$basePrefixPrompt)[[bool]$basePrefixPrompt]
    if (!($GhcupBasePrefix.EndsWith('\'))) {
      $GhcupBasePrefix = ('{0}\' -f $GhcupBasePrefix)
    }
  
-    $GhcupBasePrefix = $GhcupBasePrefix.TrimEnd().TrimStart()
    if (!($GhcupBasePrefix)) {
      Print-Msg -color Red -msg "No directory specified!"
    } elseif (!(Test-Path -LiteralPath ('{0}' -f $GhcupBasePrefix))) {
@@ -284,20 +216,7 @@ $null = [Environment]::SetEnvironmentVariable("GHCUP_INSTALL_BASE_PREFIX", $Ghcu


 $GhcupDir = ('{0}\ghcup' -f $GhcupBasePrefix)
-if ($ExistingMsys2Dir) {
-  if (!(Test-Path -LiteralPath ('{0}' -f $ExistingMsys2Dir) -IsValid)) {
-    Print-Msg -color Red -msg "Not a valid directory! (ExistingMsys2Dir)"
-    Exit 1
-  } elseif (!(Split-Path -IsAbsolute -Path "$ExistingMsys2Dir")) {
-    Print-Msg -color Red -msg "Non-absolute Path specified! (ExistingMsys2Dir)"
-    Exit 1
-  } else {
-	$MsysDir = $ExistingMsys2Dir
-  }
-} else {
-	$MsysDir = ('{0}\msys64' -f $GhcupDir)
-}
-
+$MsysDir = ('{0}\msys64' -f $GhcupDir)
 $Bash = ('{0}\usr\bin\bash' -f $MsysDir)
 if (!($BootstrapUrl)) {
  $BootstrapUrl = 'https://www.haskell.org/ghcup/sh/bootstrap-haskell'
@@ -306,7 +225,6 @@ $GhcupMsys2 = [System.Environment]::GetEnvironmentVariable('GHCUP_MSYS2', 'user'

 Print-Msg -msg 'Preparing for GHCup installation...'

-# ask what to do in case ghcup is already installed
 if (Test-Path -LiteralPath ('{0}' -f $GhcupDir)) {
  Print-Msg -msg ('GHCup already installed at ''{0}''...' -f $GhcupDir)
  if ($Overwrite) {
@@ -336,74 +254,8 @@ if (Test-Path -LiteralPath ('{0}' -f $GhcupDir)) {
 $null = New-Item -Path ('{0}' -f $GhcupDir) -ItemType 'directory' -ErrorAction SilentlyContinue
 $null = New-Item -Path ('{0}' -f $GhcupDir) -Name 'bin' -ItemType 'directory' -ErrorAction SilentlyContinue

-# ask for cabal dir destination
-if ($CabalDir) {
-  $CabDirEnv = $CabalDir
-  if (!($CabDirEnv)) {
-    Print-Msg -color Red -msg "No directory specified!"
-    Exit 1        
-  } elseif (!(Split-Path -IsAbsolute -Path "$CabDirEnv")) {
-    Print-Msg -color Red -msg "Invalid/Non-absolute Path specified"
-    Exit 1
-  }
-} elseif (!($Silent)) {
-  while ($true) {
-
-    $defaultCabalDir = ('{0}\cabal' -f $GhcupBasePrefix)
-    Print-Msg -color Magenta -msg ('Specify Cabal directory (this is where haskell packages end up){1}Press enter to accept the default [{0}]:' -f $defaultCabalDir, "`n")
-    $CabalDirPrompt = Read-Host
-    $CabDirEnv = ($defaultCabalDir,$CabalDirPrompt)[[bool]$CabalDirPrompt]
-
-    $CabDirEnv = $CabDirEnv.TrimEnd().TrimStart()
-    if (!($CabDirEnv)) {
-      Print-Msg -color Red -msg "No directory specified!"         
-    } elseif (!(Split-Path -IsAbsolute -Path "$CabDirEnv")) {
-      Print-Msg -color Red -msg "Invalid/Non-absolute Path specified"
-    } else {
-      Break
-    }
-  }
-} else {
-  $CabDirEnv = ('{0}\cabal' -f $GhcupBasePrefix)
-}
-
-# ask whether to install HLS
-if (!($InstallHLS)) {
-  if (!($Silent)) {
-    $HLSdecision = $Host.UI.PromptForChoice('Install HLS'
-      , 'Do you want to install the haskell-language-server (HLS) for development purposes as well?'
-      , [System.Management.Automation.Host.ChoiceDescription[]] @('&Yes'
-          '&No'
-          '&Abort'), 1)
-
-    if ($HLSdecision -eq 0) {
-      $InstallHLS = $true
-    } elseif ($HLSdecision -eq 2) {
-      Exit 0
-    }
-  }
-}
-
-# ask whether to install stack
-if (!($InstallStack)) {
-  if (!($Silent)) {
-    $StackDecision = $Host.UI.PromptForChoice('Install stack'
-      , 'Do you want to install stack as well?'
-      , [System.Management.Automation.Host.ChoiceDescription[]] @('&Yes'
-          '&No'
-          '&Abort'), 1)
-
-    if ($StackDecision -eq 0) {
-      $InstallStack = $true
-    } elseif ($StackDecision -eq 2) {
-      Exit 0
-    }
-  }
-}
-
-
-# mingw foo
 Print-Msg -msg 'First checking for Msys2...'
+
 if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
  if ($Silent) {
    $msys2Decision = 0
@@ -415,25 +267,21 @@ if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
  }

  if ($msys2Decision -eq 0) {
-    Print-Msg -msg ('...Msys2 doesn''t exist, installing into {0}' -f $MsysDir)
-
-	Print-Msg -msg 'Starting installation in 5 seconds, this may take a while...'
-	Start-Sleep -s 5
+    Print-Msg -msg ('...Msys2 doesn''t exist, installing into {0} ...this may take a while' -f $MsysDir)

    # Download the archive
    Print-Msg -msg 'Downloading Msys2 archive...'
    $archive = 'msys2-x86_64-latest.sfx.exe'
-    $archivePath = ('{0}\{1}' -f ([IO.Path]::GetTempPath()), "$archive")
    
    if (Get-Command -Name 'curl.exe' -ErrorAction SilentlyContinue) {
-      Exec "curl.exe" '-o' "$archivePath" ('https://repo.msys2.org/distrib/{0}' -f "$archive")
+      Exec "curl.exe" '-o' ('{0}\{1}' -f $env:TEMP, $archive) ('https://repo.msys2.org/distrib/{0}' -f $archive)
    } else {
-      Get-FileWCSynchronous -url ('https://repo.msys2.org/distrib/{0}' -f $archive) -destinationFolder ([IO.Path]::GetTempPath()) -includeStats
+      Get-FileWCSynchronous -url ('https://repo.msys2.org/distrib/{0}' -f $archive) -destinationFolder "$env:TEMP" -includeStats
    }

    Print-Msg -msg 'Extracting Msys2 archive...'
-    $null = & "$archivePath" '-y' ('-o{0}' -f $GhcupDir)  # Extract
-    Remove-Item -Path "$archivePath"
+    $null = & "$env:TEMP\$archive" '-y' ('-o{0}' -f $GhcupDir)  # Extract
+    Remove-Item -Path ('{0}/{1}' -f $env:TEMP, $archive)

    Print-Msg -msg 'Processing MSYS2 bash for first time use...'
    Exec "$Bash" '-lc' 'exit'
@@ -447,27 +295,25 @@ if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
    Exec "$Bash" '-lc' 'pacman --noconfirm -Syuu'

    Print-Msg -msg 'Installing Dependencies...'
-    Exec "$Bash" '-lc' 'pacman --noconfirm -S --needed curl autoconf mingw-w64-x86_64-pkgconf'
+    Exec "$Bash" '-lc' 'pacman --noconfirm -S --needed curl mingw-w64-x86_64-pkgconf'

    Print-Msg -msg 'Updating SSL root certificate authorities...'
    Exec "$Bash" '-lc' 'pacman --noconfirm -S ca-certificates'

    Print-Msg -msg 'Setting default home directory...'
    Exec "$Bash" '-lc' "sed -i -e 's/db_home:.*$/db_home: windows/' /etc/nsswitch.conf"
-
  } elseif ($msys2Decision -eq 1) {
    Print-Msg -color Yellow -msg 'Skipping MSys2 installation.'
    while ($true) {
      if ($GhcupMsys2) {
        $defaultMsys2Dir = $GhcupMsys2
-        Print-Msg -color Magenta -msg ('Input existing MSys2 toolchain directory.{1}Press enter to accept the default [{0}]:' -f $defaultMsys2Dir, "`n")
+        Print-Msg -color Magenta -msg ('Input existing MSys2 toolchain directory. Press enter to accept the default [{0}]:' -f $defaultMsys2Dir)
        $MsysDirPrompt = Read-Host
        $MsysDir = ($defaultMsys2Dir,$MsysDirPrompt)[[bool]$MsysDirPrompt]
      } else {
        Print-Msg -color Magenta -msg 'Input existing MSys2 toolchain directory:' 
        $MsysDir = Read-Host
      }
-      $MsysDir = $MsysDir.TrimEnd().TrimStart()
      if (!($MsysDir)) {
        Print-Msg -color Red -msg "No directory specified!"         
      } elseif (!(Test-Path -LiteralPath ('{0}' -f $MsysDir))) {
@@ -484,85 +330,46 @@ if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
  }
 } else {
    Print-Msg -msg ('...Msys2 found in {0} ...skipping Msys2 installation.' -f $MsysDir)
-
-	Print-Msg -msg 'Starting installation in 5 seconds, this may take a while...'
-	Start-Sleep -s 5
 }

 Print-Msg -msg 'Creating shortcuts...'
-$uninstallShortCut = @'
-$decision = $Host.UI.PromptForChoice('Uninstall Haskell'
-, 'Do you want to uninstall all of the haskell toolchain, including GHC, Cabal, Stack and GHCup itself?'
-, [System.Management.Automation.Host.ChoiceDescription[]] @('&Uninstall'
-    '&Abort'), 0)
-
-if ($decision -eq 1) {
-  Exit 0
-}
-
-Write-Host 'Removing ghcup toolchain' -ForegroundColor Green
-ghcup nuke
-
-Write-Host 'Unsetting GHCUP_INSTALL_BASE_PREFIX' -ForegroundColor Green
-[Environment]::SetEnvironmentVariable('GHCUP_INSTALL_BASE_PREFIX', $null, [System.EnvironmentVariableTarget]::User)
-
-$ghcupMsys2 = [System.Environment]::GetEnvironmentVariable('GHCUP_MSYS2', 'user')
-$GhcupBasePrefixEnv = [System.Environment]::GetEnvironmentVariable('GHCUP_INSTALL_BASE_PREFIX', 'user')
-
-if ($ghcupMsys2) {
-  $msys2Dir = [IO.Path]::GetFullPath($ghcupMsys2)
-  $baseDir = [IO.Path]::GetFullPath('{0}\ghcup' -f $GhcupBasePrefixEnv)
-
-  if ($msys2Dir.StartsWith($baseDir)) {
-    Write-Host 'Unsetting GHCUP_MSYS2' -ForegroundColor Green
-    [Environment]::SetEnvironmentVariable('GHCUP_MSYS2', $null, [System.EnvironmentVariableTarget]::User)
-  } else {
-    Write-Host ('GHCUP_MSYS2 env variable is set to a non-standard location {0}. Environment variable not unset. Uninstall manually.' -f $msys2Dir) -ForegroundColor Magenta
-  }
-} else {
-  Write-Host 'Unsetting GHCUP_MSYS2' -ForegroundColor Green
-  [Environment]::SetEnvironmentVariable('GHCUP_MSYS2', $null, [System.EnvironmentVariableTarget]::User)
-}
-
-Write-Host 'Removing ghcup from PATH env var' -ForegroundColor Green
-$path = [System.Environment]::GetEnvironmentVariable(
-    'PATH',
-    'user'
-)
-$path = ($path.Split(';') | Where-Object { $_ -ne ('{0}\bin' -f $baseDir) }) -join ';'
-[System.Environment]::SetEnvironmentVariable(
-    'PATH',
-    $path,
-    'user'
-)
-
-Write-Host 'Removing desktop files' -ForegroundColor Green
 $DesktopDir = [Environment]::GetFolderPath("Desktop")
-Remove-Item -LiteralPath ('{0}\Install GHC dev dependencies.lnk' -f $DesktopDir) -Force
-Remove-Item -LiteralPath ('{0}\Mingw haskell shell.lnk' -f $DesktopDir) -Force
-Remove-Item -LiteralPath ('{0}\Mingw package management docs.url' -f $DesktopDir) -Force
-
-Write-Host ('CABAL_DIR env variable is still set to {0} and will be used by cabal regardless of ghcup. You may want to uninstall this manually.' -f [System.Environment]::GetEnvironmentVariable('CABAL_DIR', 'user')) -ForegroundColor Magenta
-Write-Host 'You may remove this script now.' -ForegroundColor Magenta
-
-if ($Host.Name -eq "ConsoleHost")
-{
-    Write-Host "Press any key to continue..."
-    $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyUp") > $null
-}
-'@
-
 $GhcInstArgs = '-mingw64 -mintty -c "pacman --noconfirm -S --needed base-devel gettext autoconf make libtool automake python p7zip patch unzip"'
-Create-Shortcut -SourceExe ('{0}\msys2_shell.cmd' -f $MsysDir) -ArgumentsToSourceExe $GhcInstArgs -DestinationPath 'Install GHC dev dependencies.lnk' -TempPath $GhcupDir
-Create-Shortcut -SourceExe ('{0}\msys2_shell.cmd' -f $MsysDir) -ArgumentsToSourceExe '-mingw64' -DestinationPath 'Mingw haskell shell.lnk' -TempPath $GhcupDir
-Create-Shortcut -SourceExe 'https://www.msys2.org/docs/package-management' -ArgumentsToSourceExe '' -DestinationPath 'Mingw package management docs.url' -TempPath $GhcupDir
-$DesktopDir = [Environment]::GetFolderPath("Desktop")
-$null = New-Item -Path $DesktopDir -Name "Uninstall Haskell.ps1" -ItemType "file" -Force -Value $uninstallShortCut
+Create-Shortcut -SourceExe ('{0}\msys2_shell.cmd' -f $MsysDir) -ArgumentsToSourceExe $GhcInstArgs -DestinationPath ('{0}\Install GHC dev dependencies.lnk' -f $DesktopDir)
+Create-Shortcut -SourceExe ('{0}\msys2_shell.cmd' -f $MsysDir) -ArgumentsToSourceExe '-mingw64' -DestinationPath ('{0}\Mingw haskell shell.lnk' -f $DesktopDir)
+Create-Shortcut -SourceExe 'https://www.msys2.org/docs/package-management' -ArgumentsToSourceExe '' -DestinationPath ('{0}\Mingw package management docs.url' -f $DesktopDir)

 Print-Msg -msg ('Adding {0}\bin to Users Path...' -f $GhcupDir)
 Add-EnvPath -Path ('{0}\bin' -f ([System.IO.Path]::GetFullPath("$GhcupDir"))) -Container 'User'

+if ($CabalDir) {
+  $CabDirEnv = $CabalDir
+  if (!($CabDirEnv)) {
+    Print-Msg -color Red -msg "No directory specified!"
+    Exit 1        
+  } elseif (!(Split-Path -IsAbsolute -Path "$CabDirEnv")) {
+    Print-Msg -color Red -msg "Invalid/Non-absolute Path specified"
+    Exit 1
+  }
+} elseif (!($Silent)) {
+  while ($true) {

+    $defaultCabalDir = ('{0}\cabal' -f $GhcupBasePrefix)
+    Print-Msg -color Magenta -msg ('Specify Cabal directory (this is where haskell packages end up). Press enter to accept the default [{0}]:' -f $defaultCabalDir)
+    $CabalDirPrompt = Read-Host
+    $CabDirEnv = ($defaultCabalDir,$CabalDirPrompt)[[bool]$CabalDirPrompt]
+
+    if (!($CabDirEnv)) {
+      Print-Msg -color Red -msg "No directory specified!"         
+    } elseif (!(Split-Path -IsAbsolute -Path "$CabDirEnv")) {
+      Print-Msg -color Red -msg "Invalid/Non-absolute Path specified"
+    } else {
+      Break
+    }
+  }
+} else {
+  $CabDirEnv = ('{0}\cabal' -f $GhcupBasePrefix)
+}

 $CabalDirFull = [System.IO.Path]::GetFullPath("$CabDirEnv")
 Print-Msg -msg ('Setting CABAL_DIR to ''{0}''' -f $CabalDirFull)
@@ -572,29 +379,16 @@ Print-Msg -msg 'Starting GHCup installer...'

 $Msys2Shell = ('{0}\msys2_shell.cmd' -f $MsysDir)

-# The bootstrap script is always silent, since we ask relevant questions here
-$SilentExport = 'export BOOTSTRAP_HASKELL_NONINTERACTIVE=1 ;'
-
-if ($InstallStack) {
-  $StackInstallExport = 'export BOOTSTRAP_HASKELL_INSTALL_STACK=1 ;'
-}
-
-if ($InstallHLS) {
-  $HLSInstallExport = 'export BOOTSTRAP_HASKELL_INSTALL_HLS=1 ;'
-}
-
-if (!($NoAdjustCabalConfig)) {
-  $AdjustCabalConfigExport = 'export BOOTSTRAP_HASKELL_ADJUST_CABAL_CONFIG=1 ;'
-}
-
-if ($Minimal) {
-  $MinimalExport = 'export BOOTSTRAP_HASKELL_MINIMAL=1 ;'
+if ($Silent) {
+  $SilentExport = 'export BOOTSTRAP_HASKELL_NONINTERACTIVE=1 ;'
+} else {
+  $SilentExport = ''
 }

 if ((Get-Process -ID $PID).ProcessName.StartsWith("bootstrap-haskell") -Or $InBash) {
-  Exec "$Bash" '-lc' ('{4} {6} {7} {8} {9} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport, $MinimalExport)
+  Exec "$Bash" '-lc' ('{4} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull)
 } else {
-  Exec "$Msys2Shell" '-mingw64' '-mintty' '-c' ('{4} {6} {7} {8} {9} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; trap ''echo Press any key to exit && read -n 1 && exit'' 2 ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash ; echo ''Press any key to exit'' && read -n 1' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport, $MinimalExport)
+  Exec "$Msys2Shell" '-mingw64' '-mintty' '-c' ('{4} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; trap ''echo Press any key to exit && read -n 1 && exit'' 2 ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash ; echo ''Press any key to exit'' && read -n 1' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull)
 }


@@ -626,5 +420,3 @@ if ((Get-Process -ID $PID).ProcessName.StartsWith("bootstrap-haskell") -Or $InBa



-
-
--- a/cabal.ghc8104.project
+++ b/cabal.ghc8104.project
@@ -0,0 +1,20 @@
+packages: ./ghcup.cabal
+
+with-compiler: ghc-8.10.4
+
+optional-packages: ./3rdparty/*/*.cabal
+
+optimization: 2
+
+package streamly
+    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
+
+package ghcup
+    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
+
+constraints: http-io-streams -brotli
+
+package libarchive
+  flags: -system-libarchive
+
+allow-newer: base, ghc-prim, template-haskell
--- a/cabal.ghc8104.project.freeze
+++ b/cabal.ghc8104.project.freeze
@@ -0,0 +1,261 @@
+active-repositories: hackage.haskell.org:merge
+constraints: any.Cabal ==3.2.1.0,
+             any.HUnit ==1.6.2.0,
+             any.IfElse ==0.85,
+             any.QuickCheck ==2.14.2,
+             QuickCheck -old-random +templatehaskell,
+             any.StateVar ==1.2.1,
+             any.abstract-deque ==0.3,
+             abstract-deque -usecas,
+             any.aeson ==1.5.6.0,
+             aeson -bytestring-builder -cffi -developer -fast,
+             any.aeson-pretty ==0.8.8,
+             aeson-pretty -lib-only,
+             any.alex ==3.2.6,
+             alex +small_base,
+             any.ansi-terminal ==0.11,
+             ansi-terminal -example,
+             any.ansi-wl-pprint ==0.6.9,
+             ansi-wl-pprint -example,
+             any.array ==0.5.4.0,
+             any.ascii-string ==1.0.1.4,
+             any.assoc ==1.0.2,
+             any.async ==2.2.3,
+             async -bench,
+             any.atomic-primops ==0.8.4,
+             atomic-primops -debug,
+             any.attoparsec ==0.13.2.5,
+             attoparsec -developer,
+             any.auto-update ==0.1.6,
+             any.base ==4.14.1.0,
+             any.base-compat ==0.11.2,
+             any.base-compat-batteries ==0.11.2,
+             any.base-orphans ==0.8.4,
+             any.base16-bytestring ==1.0.1.0,
+             any.base64-bytestring ==1.2.0.1,
+             any.bifunctors ==5.5.10,
+             bifunctors +semigroups +tagged,
+             any.binary ==0.8.8.0,
+             any.blaze-builder ==0.4.2.1,
+             any.bytestring ==0.10.12.0,
+             any.bz2 ==1.0.1.0,
+             bz2 -cross +with-bzlib,
+             any.c2hs ==0.28.7,
+             c2hs +base3 -regression,
+             any.call-stack ==0.3.0,
+             any.case-insensitive ==1.2.1.0,
+             any.casing ==0.1.4.1,
+             any.cereal ==0.5.8.1,
+             cereal -bytestring-builder,
+             any.chs-cabal ==0.1.1.0,
+             any.chs-deps ==0.1.0.0,
+             chs-deps -cross,
+             any.clock ==0.8.2,
+             clock -llvm,
+             any.cmdargs ==0.10.21,
+             cmdargs +quotation -testprog,
+             any.colour ==2.3.5,
+             any.comonad ==5.0.8,
+             comonad +containers +distributive +indexed-traversable,
+             any.composition-prelude ==3.0.0.2,
+             composition-prelude -development,
+             any.concurrent-output ==1.10.12,
+             any.conduit ==1.3.4.1,
+             any.conduit-extra ==1.3.5,
+             any.containers ==0.6.2.1,
+             any.contravariant ==1.5.3,
+             contravariant +semigroups +statevar +tagged,
+             any.cryptohash-sha256 ==0.11.102.0,
+             cryptohash-sha256 -exe +use-cbits,
+             any.data-default-class ==0.1.2.0,
+             any.data-fix ==0.3.1,
+             any.deepseq ==1.4.4.0,
+             any.deferred-folds ==0.9.17,
+             any.directory ==1.3.6.0,
+             any.distributive ==0.6.2.1,
+             distributive +semigroups +tagged,
+             any.dlist ==1.0,
+             dlist -werror,
+             any.easy-file ==0.2.2,
+             any.errors ==2.3.0,
+             any.exceptions ==0.10.4,
+             any.fast-logger ==3.0.3,
+             any.filepath ==1.4.2.1,
+             any.focus ==1.0.2,
+             any.foldl ==1.4.11,
+             any.free ==5.1.6,
+             any.fusion-plugin-types ==0.1.0,
+             any.generic-arbitrary ==0.1.0,
+             any.generics-sop ==0.5.1.1,
+             any.ghc-boot-th ==8.10.4,
+             any.ghc-prim ==0.6.1,
+             ghcup -internal-downloader -tar -tui,
+             any.happy ==1.20.0,
+             any.hashable ==1.3.1.0,
+             hashable +integer-gmp,
+             any.haskell-src-exts ==1.23.1,
+             any.haskell-src-meta ==0.8.7,
+             any.haskus-utils-data ==1.4,
+             any.haskus-utils-types ==1.5.1,
+             any.haskus-utils-variant ==3.1,
+             any.heaps ==0.3.6.1,
+             any.hpath ==0.11.0,
+             any.hpath-directory ==0.14.1,
+             any.hpath-filepath ==0.10.4,
+             any.hpath-io ==0.14.1,
+             any.hpath-posix ==0.13.2,
+             any.hsc2hs ==0.68.7,
+             hsc2hs -in-ghc-tree,
+             any.hspec ==2.7.8,
+             any.hspec-core ==2.7.8,
+             any.hspec-discover ==2.7.8,
+             any.hspec-expectations ==0.8.2,
+             any.hspec-golden-aeson ==0.7.0.0,
+             any.indexed-profunctors ==0.1,
+             any.indexed-traversable ==0.1.1,
+             any.indexed-traversable-instances ==0.1,
+             any.integer-gmp ==1.0.3.0,
+             any.integer-logarithms ==1.0.3.1,
+             integer-logarithms -check-bounds +integer-gmp,
+             any.language-c ==0.8.3,
+             language-c -allwarnings +iecfpextension +separatesyb +usebytestrings,
+             any.libarchive ==3.0.2.1,
+             libarchive -cross -low-memory -system-libarchive,
+             any.libyaml ==0.1.2,
+             libyaml -no-unicode -system-libyaml,
+             any.lifted-base ==0.2.3.12,
+             any.list-t ==1.0.4,
+             any.lockfree-queue ==0.2.3.1,
+             lzma -static,
+             any.math-functions ==0.3.4.1,
+             math-functions +system-erf +system-expm1,
+             any.megaparsec ==9.0.1,
+             megaparsec -dev,
+             any.microlens ==0.4.12.0,
+             any.microlens-mtl ==0.2.0.1,
+             any.microlens-th ==0.4.3.9,
+             any.mmorph ==1.1.5,
+             any.monad-control ==1.0.2.3,
+             any.monad-logger ==0.3.36,
+             monad-logger +template_haskell,
+             any.monad-loops ==0.4.3,
+             monad-loops +base4,
+             any.mono-traversable ==1.0.15.1,
+             any.mtl ==2.2.2,
+             any.mwc-random ==0.15.0.1,
+             any.network ==3.1.2.1,
+             network -devel,
+             any.old-locale ==1.0.0.7,
+             any.old-time ==1.1.0.3,
+             any.optics ==0.4,
+             any.optics-core ==0.4,
+             optics-core -explicit-generic-labels,
+             any.optics-extra ==0.4,
+             any.optics-th ==0.4,
+             any.optics-vl ==0.2.1,
+             any.optparse-applicative ==0.16.1.0,
+             optparse-applicative +process,
+             any.os-release ==1.0.2,
+             os-release -devel,
+             any.parallel ==3.2.2.0,
+             any.parsec ==3.1.14.0,
+             any.parser-combinators ==1.3.0,
+             parser-combinators -dev,
+             any.pretty ==1.1.3.6,
+             any.pretty-terminal ==0.1.0.0,
+             any.primitive ==0.7.1.0,
+             any.primitive-extras ==0.8.2,
+             any.primitive-unlifted ==0.1.3.0,
+             any.process ==1.6.9.0,
+             any.profunctors ==5.6.2,
+             any.quickcheck-arbitrary-adt ==0.3.1.0,
+             any.quickcheck-io ==0.2.0,
+             any.random ==1.2.0,
+             any.recursion-schemes ==5.2.2,
+             recursion-schemes +template-haskell,
+             any.regex-posix ==0.96.0.0,
+             regex-posix -_regex-posix-clib,
+             any.resourcet ==1.2.4.2,
+             any.rts ==1.0,
+             any.safe ==0.3.19,
+             any.safe-exceptions ==0.1.7.1,
+             any.scientific ==0.3.6.2,
+             scientific -bytestring-builder -integer-simple,
+             any.semigroupoids ==5.3.5,
+             semigroupoids +comonad +containers +contravariant +distributive +tagged +unordered-containers,
+             any.setenv ==0.1.1.3,
+             any.sop-core ==0.5.0.1,
+             any.split ==0.2.3.4,
+             any.splitmix ==0.1.0.3,
+             splitmix -optimised-mixer,
+             any.stm ==2.5.0.0,
+             any.stm-chans ==3.0.0.4,
+             any.streaming-commons ==0.2.2.1,
+             streaming-commons -use-bytestring-builder,
+             any.streamly ==0.7.3,
+             streamly -debug -dev -examples -examples-sdl -fusion-plugin -has-llvm -inspection -no-fusion -streamk,
+             any.streamly-bytestring ==0.1.2,
+             any.streamly-posix ==0.1.0.1,
+             any.strict ==0.4.0.1,
+             strict +assoc,
+             any.strict-base ==0.4.0.0,
+             any.string-interpolate ==0.3.1.0,
+             string-interpolate -bytestring-builder -extended-benchmarks -text-builder,
+             any.syb ==0.7.2.1,
+             any.tagged ==0.8.6.1,
+             tagged +deepseq +transformers,
+             any.tasty ==1.3.1,
+             tasty +clock,
+             any.tasty-hunit ==0.10.0.3,
+             any.tasty-quickcheck ==0.10.1.2,
+             any.template-haskell ==2.16.0.0,
+             any.terminal-size ==0.3.2.1,
+             any.terminfo ==0.4.1.4,
+             any.text ==1.2.4.1,
+             any.text-conversions ==0.3.1,
+             any.text-short ==0.1.3,
+             text-short -asserts,
+             any.tf-random ==0.5,
+             any.th-abstraction ==0.4.2.0,
+             any.th-compat ==0.1.1,
+             any.th-lift ==0.8.2,
+             any.th-lift-instances ==0.1.18,
+             any.th-orphans ==0.13.11,
+             any.th-reify-many ==0.1.9,
+             any.these ==1.1.1.1,
+             these +assoc,
+             any.time ==1.9.3,
+             any.time-compat ==1.9.5,
+             time-compat -old-locale,
+             any.transformers ==0.5.6.2,
+             any.transformers-base ==0.4.5.2,
+             transformers-base +orphaninstances,
+             any.transformers-compat ==0.6.6,
+             transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
+             any.typed-process ==0.2.6.0,
+             any.unbounded-delays ==0.1.1.1,
+             any.unix ==2.7.2.2,
+             any.unix-bytestring ==0.3.7.3,
+             any.unix-compat ==0.5.3,
+             unix-compat -old-time,
+             any.unix-time ==0.4.7,
+             any.unliftio-core ==0.2.0.1,
+             any.unordered-containers ==0.2.13.0,
+             unordered-containers -debug,
+             any.uri-bytestring ==0.3.3.0,
+             uri-bytestring -lib-werror,
+             any.utf8-string ==1.0.2,
+             any.uuid-types ==1.0.4,
+             any.vector ==0.12.2.0,
+             vector +boundschecks -internalchecks -unsafechecks -wall,
+             any.vector-algorithms ==0.8.0.4,
+             vector-algorithms +bench +boundschecks -internalchecks -llvm +properties -unsafechecks,
+             any.versions ==4.0.3,
+             any.vty ==5.33,
+             any.wcwidth ==0.0.2,
+             wcwidth -cli +split-base,
+             any.word8 ==0.1.3,
+             any.yaml ==0.11.5.0,
+             yaml +no-examples +no-exe,
+             zlib -non-blocking-ffi -pkg-config -static
+index-state: hackage.haskell.org 2021-03-07T18:36:25Z
--- a/cabal.ghc8107.project
+++ b/cabal.ghc8107.project
@@ -1,34 +0,0 @@
-packages: ./ghcup.cabal
-
-optional-packages: ./vendored/*/*.cabal
-
-optimization: 2
-
-package ghcup
-    tests: True
-    flags: +tui
-
-source-repository-package
-  type: git
-  location: https://github.com/bgamari/terminal-size.git
-  tag: 34ea816bd63f75f800eedac12c6908c6f3736036
-
-constraints: http-io-streams -brotli,
-             any.Cabal ==3.6.2.0,
-             any.aeson >= 2.0.1.0
-
-package libarchive
-  flags: -system-libarchive
-
-package aeson-pretty
-  flags: +lib-only
-
-package cabal-plan
-  flags: -exe
-
-package aeson
-  flags: +ordered-keymap
-
-allow-newer: base, ghc-prim, template-haskell, language-c
-
-with-compiler: ghc-8.10.7
--- a/cabal.ghc8107.project.freeze
+++ b/cabal.ghc8107.project.freeze
@@ -1,239 +0,0 @@
-active-repositories: hackage.haskell.org:merge
-constraints: any.Cabal ==3.6.2.0,
-             Cabal -bundled-binary-generic,
-             any.HUnit ==1.6.2.0,
-             any.HsOpenSSL ==0.11.7.2,
-             HsOpenSSL -fast-bignum -homebrew-openssl -macports-openssl -use-pkg-config,
-             any.OneTuple ==0.3.1,
-             any.QuickCheck ==2.14.2,
-             QuickCheck -old-random +templatehaskell,
-             any.StateVar ==1.2.2,
-             any.abstract-deque ==0.3,
-             abstract-deque -usecas,
-             any.aeson ==2.0.3.0,
-             aeson -cffi +ordered-keymap,
-             any.aeson-pretty ==0.8.9,
-             aeson-pretty +lib-only,
-             any.alex ==3.2.7.1,
-             any.ansi-terminal ==0.11.1,
-             ansi-terminal -example,
-             any.ansi-wl-pprint ==0.6.9,
-             ansi-wl-pprint -example,
-             any.array ==0.5.4.0,
-             any.assoc ==1.0.2,
-             any.async ==2.2.4,
-             async -bench,
-             any.atomic-primops ==0.8.4,
-             atomic-primops -debug,
-             any.attoparsec ==0.14.4,
-             attoparsec -developer,
-             any.base ==4.14.3.0,
-             any.base-compat ==0.12.1,
-             any.base-compat-batteries ==0.12.1,
-             any.base-orphans ==0.8.6,
-             any.base16-bytestring ==1.0.2.0,
-             any.base64-bytestring ==1.2.1.0,
-             any.bifunctors ==5.5.11,
-             bifunctors +semigroups +tagged,
-             any.binary ==0.8.8.0,
-             any.blaze-builder ==0.4.2.2,
-             any.brick ==0.64.2,
-             brick -demos,
-             any.bytestring ==0.10.12.0,
-             any.bz2 ==1.0.1.0,
-             bz2 -cross +with-bzlib,
-             any.c2hs ==0.28.8,
-             c2hs +base3 -regression,
-             any.cabal-plan ==0.7.2.1,
-             cabal-plan -_ -exe -license-report,
-             any.call-stack ==0.4.0,
-             any.case-insensitive ==1.2.1.0,
-             any.casing ==0.1.4.1,
-             any.chs-cabal ==0.1.1.1,
-             any.chs-deps ==0.1.0.0,
-             chs-deps -cross,
-             any.clock ==0.8.3,
-             clock -llvm,
-             any.colour ==2.3.6,
-             any.comonad ==5.0.8,
-             comonad +containers +distributive +indexed-traversable,
-             any.composition-prelude ==3.0.0.2,
-             composition-prelude -development,
-             any.config-ini ==0.2.4.0,
-             config-ini -enable-doctests,
-             any.containers ==0.6.5.1,
-             any.contravariant ==1.5.5,
-             contravariant +semigroups +statevar +tagged,
-             any.cpphs ==1.20.9.1,
-             cpphs -old-locale,
-             any.cryptohash-sha1 ==0.11.101.0,
-             any.cryptohash-sha256 ==0.11.102.1,
-             cryptohash-sha256 -exe +use-cbits,
-             any.data-clist ==0.2,
-             any.data-fix ==0.3.2,
-             any.deepseq ==1.4.4.0,
-             any.directory ==1.3.6.0,
-             any.disk-free-space ==0.1.0.1,
-             any.distributive ==0.6.2.1,
-             distributive +semigroups +tagged,
-             any.dlist ==1.0,
-             dlist -werror,
-             any.exceptions ==0.10.4,
-             any.filepath ==1.4.2.1,
-             any.free ==5.1.7,
-             any.fusion-plugin-types ==0.1.0,
-             any.generic-arbitrary ==0.2.0,
-             any.ghc ==8.10.7,
-             any.ghc-boot ==8.10.7,
-             any.ghc-boot-th ==8.10.7,
-             any.ghc-byteorder ==4.11.0.0.10,
-             any.ghc-heap ==8.10.7,
-             any.ghc-prim ==0.6.1,
-             any.ghci ==8.10.7,
-             any.happy ==1.20.0,
-             any.hashable ==1.4.0.2,
-             hashable +containers +integer-gmp -random-initial-seed,
-             any.haskus-utils-data ==1.4,
-             any.haskus-utils-types ==1.5.1,
-             any.haskus-utils-variant ==3.2.1,
-             any.heaps ==0.4,
-             any.hpc ==0.6.1.0,
-             any.hsc2hs ==0.68.8,
-             hsc2hs -in-ghc-tree,
-             any.hspec ==2.9.4,
-             any.hspec-core ==2.9.4,
-             any.hspec-discover ==2.9.4,
-             any.hspec-expectations ==0.8.2,
-             any.hspec-golden-aeson ==0.9.0.0,
-             any.http-io-streams ==0.1.6.0,
-             http-io-streams -brotli +fast-xor,
-             any.indexed-profunctors ==0.1.1,
-             any.indexed-traversable ==0.1.2,
-             any.indexed-traversable-instances ==0.1.1,
-             any.integer-gmp ==1.0.3.0,
-             any.integer-logarithms ==1.0.3.1,
-             integer-logarithms -check-bounds +integer-gmp,
-             any.io-streams ==1.5.2.1,
-             io-streams +network -nointeractivetests +zlib,
-             any.language-c ==0.9.0.1,
-             language-c -allwarnings +iecfpextension +usebytestrings,
-             any.libarchive ==3.0.3.2,
-             libarchive -cross -low-memory +no-exe -system-libarchive,
-             any.libyaml-streamly ==0.2.1,
-             libyaml-streamly -no-unicode -system-libyaml,
-             any.lockfree-queue ==0.2.3.1,
-             any.lzma-static ==5.2.5.4,
-             any.megaparsec ==9.2.0,
-             megaparsec -dev,
-             any.microlens ==0.4.12.0,
-             any.microlens-mtl ==0.2.0.1,
-             any.microlens-th ==0.4.3.10,
-             any.monad-control ==1.0.3.1,
-             any.mtl ==2.2.2,
-             any.network ==3.1.2.7,
-             network -devel,
-             any.network-uri ==2.6.4.1,
-             any.openssl-streams ==1.2.3.0,
-             any.optics ==0.4,
-             any.optics-core ==0.4,
-             optics-core -explicit-generic-labels,
-             any.optics-extra ==0.4,
-             any.optics-th ==0.4,
-             any.optparse-applicative ==0.17.0.0,
-             optparse-applicative +process,
-             any.os-release ==1.0.2.1,
-             os-release -devel,
-             any.parallel ==3.2.2.0,
-             any.parsec ==3.1.14.0,
-             any.parser-combinators ==1.3.0,
-             parser-combinators -dev,
-             any.polyparse ==1.13,
-             any.pretty ==1.1.3.6,
-             any.pretty-terminal ==0.1.0.0,
-             any.primitive ==0.7.3.0,
-             any.process ==1.6.13.2,
-             any.profunctors ==5.6.2,
-             any.quickcheck-arbitrary-adt ==0.3.1.0,
-             any.quickcheck-io ==0.2.0,
-             any.random ==1.2.1,
-             any.recursion-schemes ==5.2.2.2,
-             recursion-schemes +template-haskell,
-             any.regex-base ==0.94.0.2,
-             any.regex-posix ==0.96.0.1,
-             regex-posix -_regex-posix-clib,
-             any.resourcet ==1.2.4.3,
-             any.retry ==0.8.1.2,
-             retry -lib-werror,
-             any.rts ==1.0.1,
-             any.safe ==0.3.19,
-             any.safe-exceptions ==0.1.7.2,
-             any.scientific ==0.3.7.0,
-             scientific -bytestring-builder -integer-simple,
-             any.semialign ==1.2.0.1,
-             semialign +semigroupoids,
-             any.semigroupoids ==5.3.7,
-             semigroupoids +comonad +containers +contravariant +distributive +tagged +unordered-containers,
-             any.setenv ==0.1.1.3,
-             any.split ==0.2.3.4,
-             any.splitmix ==0.1.0.4,
-             splitmix -optimised-mixer,
-             any.stm ==2.5.0.1,
-             any.streamly ==0.8.2,
-             streamly -debug -dev -fusion-plugin -has-llvm -inspection -limit-build-mem -no-fusion +opt -streamk -streamly-core -use-c-malloc -use-unliftio,
-             any.strict ==0.4.0.1,
-             strict +assoc,
-             any.strict-base ==0.4.0.0,
-             any.tagged ==0.8.6.1,
-             tagged +deepseq +transformers,
-             any.tagsoup ==0.14.8,
-             any.template-haskell ==2.16.0.0,
-             any.temporary ==1.3,
-             any.terminal-progress-bar ==0.4.1,
-             any.terminal-size ==0.3.2.1,
-             any.terminfo ==0.4.1.4,
-             any.text ==1.2.4.1,
-             any.text-short ==0.1.5,
-             text-short -asserts,
-             any.text-zipper ==0.11,
-             any.tf-random ==0.5,
-             any.th-abstraction ==0.4.3.0,
-             any.th-compat ==0.1.3,
-             any.th-lift ==0.8.2,
-             any.th-lift-instances ==0.1.19,
-             any.these ==1.1.1.1,
-             these +assoc,
-             any.time ==1.9.3,
-             any.time-compat ==1.9.6.1,
-             time-compat -old-locale,
-             any.transformers ==0.5.6.2,
-             any.transformers-base ==0.4.6,
-             transformers-base +orphaninstances,
-             any.transformers-compat ==0.7.1,
-             transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
-             any.unicode-data ==0.3.0,
-             unicode-data -ucd2haskell,
-             any.unix ==2.7.2.2,
-             any.unix-bytestring ==0.3.7.6,
-             any.unix-compat ==0.5.4,
-             unix-compat -old-time,
-             any.unliftio-core ==0.2.0.1,
-             any.unordered-containers ==0.2.17.0,
-             unordered-containers -debug,
-             any.uri-bytestring ==0.3.3.1,
-             uri-bytestring -lib-werror,
-             any.utf8-string ==1.0.2,
-             any.uuid-types ==1.0.5,
-             any.vector ==0.12.3.1,
-             vector +boundschecks -internalchecks -unsafechecks -wall,
-             any.versions ==5.0.3,
-             any.vty ==5.33,
-             any.witherable ==0.4.2,
-             any.word-wrap ==0.5,
-             any.word8 ==0.1.3,
-             any.xor ==0.0.1.1,
-             any.yaml-streamly ==0.12.1,
-             yaml-streamly +no-examples +no-exe,
-             any.zlib ==0.6.2.3,
-             zlib -bundled-c-zlib -non-blocking-ffi -pkg-config,
-             any.zlib-bindings ==0.1.1.5
-index-state: hackage.haskell.org 2022-03-15T16:43:02Z
--- a/cabal.ghc884.project
+++ b/cabal.ghc884.project
@@ -0,0 +1,20 @@
+packages: ./ghcup.cabal
+
+with-compiler: ghc-8.8.4
+
+optional-packages: ./3rdparty/*/*.cabal
+
+optimization: 2
+
+package streamly
+    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
+
+package ghcup
+    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
+
+constraints: http-io-streams -brotli
+
+package libarchive
+  flags: -system-libarchive
+
+allow-newer: base, ghc-prim, template-haskell
--- a/cabal.ghc884.project.freeze
+++ b/cabal.ghc884.project.freeze
@@ -0,0 +1,262 @@
+active-repositories: hackage.haskell.org:merge
+constraints: any.Cabal ==3.0.1.0,
+             any.HUnit ==1.6.2.0,
+             any.IfElse ==0.85,
+             any.QuickCheck ==2.14.2,
+             QuickCheck -old-random +templatehaskell,
+             any.StateVar ==1.2.1,
+             any.abstract-deque ==0.3,
+             abstract-deque -usecas,
+             any.aeson ==1.5.6.0,
+             aeson -bytestring-builder -cffi -developer -fast,
+             any.aeson-pretty ==0.8.8,
+             aeson-pretty -lib-only,
+             any.alex ==3.2.6,
+             alex +small_base,
+             any.ansi-terminal ==0.11,
+             ansi-terminal -example,
+             any.ansi-wl-pprint ==0.6.9,
+             ansi-wl-pprint -example,
+             any.array ==0.5.4.0,
+             any.ascii-string ==1.0.1.4,
+             any.assoc ==1.0.2,
+             any.async ==2.2.3,
+             async -bench,
+             any.atomic-primops ==0.8.4,
+             atomic-primops -debug,
+             any.attoparsec ==0.13.2.5,
+             attoparsec -developer,
+             any.auto-update ==0.1.6,
+             any.base ==4.13.0.0,
+             any.base-compat ==0.11.2,
+             any.base-compat-batteries ==0.11.2,
+             any.base-orphans ==0.8.4,
+             any.base16-bytestring ==1.0.1.0,
+             any.base64-bytestring ==1.2.0.1,
+             any.bifunctors ==5.5.10,
+             bifunctors +semigroups +tagged,
+             any.binary ==0.8.7.0,
+             any.blaze-builder ==0.4.2.1,
+             any.bytestring ==0.10.10.1,
+             any.bz2 ==1.0.1.0,
+             bz2 -cross +with-bzlib,
+             any.c2hs ==0.28.7,
+             c2hs +base3 -regression,
+             any.call-stack ==0.3.0,
+             any.case-insensitive ==1.2.1.0,
+             any.casing ==0.1.4.1,
+             any.cereal ==0.5.8.1,
+             cereal -bytestring-builder,
+             any.chs-cabal ==0.1.1.0,
+             any.chs-deps ==0.1.0.0,
+             chs-deps -cross,
+             any.clock ==0.8.2,
+             clock -llvm,
+             any.cmdargs ==0.10.21,
+             cmdargs +quotation -testprog,
+             any.colour ==2.3.5,
+             any.comonad ==5.0.8,
+             comonad +containers +distributive +indexed-traversable,
+             any.composition-prelude ==3.0.0.2,
+             composition-prelude -development,
+             any.concurrent-output ==1.10.12,
+             any.conduit ==1.3.4.1,
+             any.conduit-extra ==1.3.5,
+             any.containers ==0.6.2.1,
+             any.contravariant ==1.5.3,
+             contravariant +semigroups +statevar +tagged,
+             any.cryptohash-sha256 ==0.11.102.0,
+             cryptohash-sha256 -exe +use-cbits,
+             any.data-default-class ==0.1.2.0,
+             any.data-fix ==0.3.1,
+             any.deepseq ==1.4.4.0,
+             any.deferred-folds ==0.9.17,
+             any.directory ==1.3.6.0,
+             any.distributive ==0.6.2.1,
+             distributive +semigroups +tagged,
+             any.dlist ==1.0,
+             dlist -werror,
+             any.easy-file ==0.2.2,
+             any.errors ==2.3.0,
+             any.exceptions ==0.10.4,
+             exceptions +transformers-0-4,
+             any.fast-logger ==3.0.3,
+             any.filepath ==1.4.2.1,
+             any.focus ==1.0.2,
+             any.foldl ==1.4.11,
+             any.free ==5.1.6,
+             any.fusion-plugin-types ==0.1.0,
+             any.generic-arbitrary ==0.1.0,
+             any.generics-sop ==0.5.1.1,
+             any.ghc-boot-th ==8.8.4,
+             any.ghc-prim ==0.5.3,
+             ghcup -internal-downloader -tar -tui,
+             any.happy ==1.20.0,
+             any.hashable ==1.3.1.0,
+             hashable +integer-gmp,
+             any.haskell-src-exts ==1.23.1,
+             any.haskell-src-meta ==0.8.7,
+             any.haskus-utils-data ==1.4,
+             any.haskus-utils-types ==1.5.1,
+             any.haskus-utils-variant ==3.1,
+             any.heaps ==0.3.6.1,
+             any.hpath ==0.11.0,
+             any.hpath-directory ==0.14.1,
+             any.hpath-filepath ==0.10.4,
+             any.hpath-io ==0.14.1,
+             any.hpath-posix ==0.13.2,
+             any.hsc2hs ==0.68.7,
+             hsc2hs -in-ghc-tree,
+             any.hspec ==2.7.8,
+             any.hspec-core ==2.7.8,
+             any.hspec-discover ==2.7.8,
+             any.hspec-expectations ==0.8.2,
+             any.hspec-golden-aeson ==0.7.0.0,
+             any.indexed-profunctors ==0.1,
+             any.indexed-traversable ==0.1.1,
+             any.indexed-traversable-instances ==0.1,
+             any.integer-gmp ==1.0.2.0,
+             any.integer-logarithms ==1.0.3.1,
+             integer-logarithms -check-bounds +integer-gmp,
+             any.language-c ==0.8.3,
+             language-c -allwarnings +iecfpextension +separatesyb +usebytestrings,
+             any.libarchive ==3.0.2.1,
+             libarchive -cross -low-memory -system-libarchive,
+             any.libyaml ==0.1.2,
+             libyaml -no-unicode -system-libyaml,
+             any.lifted-base ==0.2.3.12,
+             any.list-t ==1.0.4,
+             any.lockfree-queue ==0.2.3.1,
+             lzma -static,
+             any.math-functions ==0.3.4.1,
+             math-functions +system-erf +system-expm1,
+             any.megaparsec ==9.0.1,
+             megaparsec -dev,
+             any.microlens ==0.4.12.0,
+             any.microlens-mtl ==0.2.0.1,
+             any.microlens-th ==0.4.3.9,
+             any.mmorph ==1.1.5,
+             any.monad-control ==1.0.2.3,
+             any.monad-logger ==0.3.36,
+             monad-logger +template_haskell,
+             any.monad-loops ==0.4.3,
+             monad-loops +base4,
+             any.mono-traversable ==1.0.15.1,
+             any.mtl ==2.2.2,
+             any.mwc-random ==0.15.0.1,
+             any.network ==3.1.2.1,
+             network -devel,
+             any.old-locale ==1.0.0.7,
+             any.old-time ==1.1.0.3,
+             any.optics ==0.4,
+             any.optics-core ==0.4,
+             optics-core -explicit-generic-labels,
+             any.optics-extra ==0.4,
+             any.optics-th ==0.4,
+             any.optics-vl ==0.2.1,
+             any.optparse-applicative ==0.16.1.0,
+             optparse-applicative +process,
+             any.os-release ==1.0.2,
+             os-release -devel,
+             any.parallel ==3.2.2.0,
+             any.parsec ==3.1.14.0,
+             any.parser-combinators ==1.3.0,
+             parser-combinators -dev,
+             any.pretty ==1.1.3.6,
+             any.pretty-terminal ==0.1.0.0,
+             any.primitive ==0.7.1.0,
+             any.primitive-extras ==0.8.2,
+             any.primitive-unlifted ==0.1.3.0,
+             any.process ==1.6.9.0,
+             any.profunctors ==5.6.2,
+             any.quickcheck-arbitrary-adt ==0.3.1.0,
+             any.quickcheck-io ==0.2.0,
+             any.random ==1.2.0,
+             any.recursion-schemes ==5.2.2,
+             recursion-schemes +template-haskell,
+             any.regex-posix ==0.96.0.0,
+             regex-posix -_regex-posix-clib,
+             any.resourcet ==1.2.4.2,
+             any.rts ==1.0,
+             any.safe ==0.3.19,
+             any.safe-exceptions ==0.1.7.1,
+             any.scientific ==0.3.6.2,
+             scientific -bytestring-builder -integer-simple,
+             any.semigroupoids ==5.3.5,
+             semigroupoids +comonad +containers +contravariant +distributive +tagged +unordered-containers,
+             any.setenv ==0.1.1.3,
+             any.sop-core ==0.5.0.1,
+             any.split ==0.2.3.4,
+             any.splitmix ==0.1.0.3,
+             splitmix -optimised-mixer,
+             any.stm ==2.5.0.0,
+             any.stm-chans ==3.0.0.4,
+             any.streaming-commons ==0.2.2.1,
+             streaming-commons -use-bytestring-builder,
+             any.streamly ==0.7.3,
+             streamly -debug -dev -examples -examples-sdl -fusion-plugin -has-llvm -inspection -no-fusion -streamk,
+             any.streamly-bytestring ==0.1.2,
+             any.streamly-posix ==0.1.0.1,
+             any.strict ==0.4.0.1,
+             strict +assoc,
+             any.strict-base ==0.4.0.0,
+             any.string-interpolate ==0.3.1.0,
+             string-interpolate -bytestring-builder -extended-benchmarks -text-builder,
+             any.syb ==0.7.2.1,
+             any.tagged ==0.8.6.1,
+             tagged +deepseq +transformers,
+             any.tasty ==1.3.1,
+             tasty +clock,
+             any.tasty-hunit ==0.10.0.3,
+             any.tasty-quickcheck ==0.10.1.2,
+             any.template-haskell ==2.15.0.0,
+             any.terminal-size ==0.3.2.1,
+             any.terminfo ==0.4.1.4,
+             any.text ==1.2.4.0,
+             any.text-conversions ==0.3.1,
+             any.text-short ==0.1.3,
+             text-short -asserts,
+             any.tf-random ==0.5,
+             any.th-abstraction ==0.4.2.0,
+             any.th-compat ==0.1.1,
+             any.th-lift ==0.8.2,
+             any.th-lift-instances ==0.1.18,
+             any.th-orphans ==0.13.11,
+             any.th-reify-many ==0.1.9,
+             any.these ==1.1.1.1,
+             these +assoc,
+             any.time ==1.9.3,
+             any.time-compat ==1.9.5,
+             time-compat -old-locale,
+             any.transformers ==0.5.6.2,
+             any.transformers-base ==0.4.5.2,
+             transformers-base +orphaninstances,
+             any.transformers-compat ==0.6.6,
+             transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
+             any.typed-process ==0.2.6.0,
+             any.unbounded-delays ==0.1.1.1,
+             any.unix ==2.7.2.2,
+             any.unix-bytestring ==0.3.7.3,
+             any.unix-compat ==0.5.3,
+             unix-compat -old-time,
+             any.unix-time ==0.4.7,
+             any.unliftio-core ==0.2.0.1,
+             any.unordered-containers ==0.2.13.0,
+             unordered-containers -debug,
+             any.uri-bytestring ==0.3.3.0,
+             uri-bytestring -lib-werror,
+             any.utf8-string ==1.0.2,
+             any.uuid-types ==1.0.4,
+             any.vector ==0.12.2.0,
+             vector +boundschecks -internalchecks -unsafechecks -wall,
+             any.vector-algorithms ==0.8.0.4,
+             vector-algorithms +bench +boundschecks -internalchecks -llvm +properties -unsafechecks,
+             any.versions ==4.0.3,
+             any.vty ==5.33,
+             any.wcwidth ==0.0.2,
+             wcwidth -cli +split-base,
+             any.word8 ==0.1.3,
+             any.yaml ==0.11.5.0,
+             yaml +no-examples +no-exe,
+             zlib -non-blocking-ffi -pkg-config -static
+index-state: hackage.haskell.org 2021-03-07T18:36:25Z
--- a/cabal.ghc902.project
+++ b/cabal.ghc902.project
@@ -1,34 +0,0 @@
-packages: ./ghcup.cabal
-
-optional-packages: ./vendored/*/*.cabal
-
-optimization: 2
-
-package ghcup
-    tests: True
-    flags: +tui
-
-source-repository-package
-  type: git
-  location: https://github.com/bgamari/terminal-size.git
-  tag: 34ea816bd63f75f800eedac12c6908c6f3736036
-
-constraints: http-io-streams -brotli,
-             any.Cabal ==3.6.2.0,
-             any.aeson >= 2.0.1.0
-
-package libarchive
-  flags: -system-libarchive
-
-package aeson-pretty
-  flags: +lib-only
-
-package cabal-plan
-  flags: -exe
-
-package aeson
-  flags: +ordered-keymap
-
-allow-newer: base, ghc-prim, template-haskell, language-c
-
-with-compiler: ghc-9.0.2
--- a/cabal.ghc902.project.freeze
+++ b/cabal.ghc902.project.freeze
@@ -1,239 +0,0 @@
-active-repositories: hackage.haskell.org:merge
-constraints: any.Cabal ==3.6.2.0,
-             Cabal -bundled-binary-generic,
-             any.HUnit ==1.6.2.0,
-             any.HsOpenSSL ==0.11.7.2,
-             HsOpenSSL -fast-bignum -homebrew-openssl -macports-openssl -use-pkg-config,
-             any.OneTuple ==0.3.1,
-             any.QuickCheck ==2.14.2,
-             QuickCheck -old-random +templatehaskell,
-             any.StateVar ==1.2.2,
-             any.abstract-deque ==0.3,
-             abstract-deque -usecas,
-             any.aeson ==2.0.3.0,
-             aeson -cffi +ordered-keymap,
-             any.aeson-pretty ==0.8.9,
-             aeson-pretty +lib-only,
-             any.alex ==3.2.7.1,
-             any.ansi-terminal ==0.11.1,
-             ansi-terminal -example,
-             any.ansi-wl-pprint ==0.6.9,
-             ansi-wl-pprint -example,
-             any.array ==0.5.4.0,
-             any.assoc ==1.0.2,
-             any.async ==2.2.4,
-             async -bench,
-             any.atomic-primops ==0.8.4,
-             atomic-primops -debug,
-             any.attoparsec ==0.14.4,
-             attoparsec -developer,
-             any.base ==4.15.1.0,
-             any.base-compat ==0.12.1,
-             any.base-compat-batteries ==0.12.1,
-             any.base-orphans ==0.8.6,
-             any.base16-bytestring ==1.0.2.0,
-             any.base64-bytestring ==1.2.1.0,
-             any.bifunctors ==5.5.11,
-             bifunctors +semigroups +tagged,
-             any.binary ==0.8.8.0,
-             any.blaze-builder ==0.4.2.2,
-             any.brick ==0.64.2,
-             brick -demos,
-             any.bytestring ==0.10.12.1,
-             any.bz2 ==1.0.1.0,
-             bz2 -cross +with-bzlib,
-             any.c2hs ==0.28.8,
-             c2hs +base3 -regression,
-             any.cabal-plan ==0.7.2.1,
-             cabal-plan -_ -exe -license-report,
-             any.call-stack ==0.4.0,
-             any.case-insensitive ==1.2.1.0,
-             any.casing ==0.1.4.1,
-             any.chs-cabal ==0.1.1.1,
-             any.chs-deps ==0.1.0.0,
-             chs-deps -cross,
-             any.clock ==0.8.3,
-             clock -llvm,
-             any.colour ==2.3.6,
-             any.comonad ==5.0.8,
-             comonad +containers +distributive +indexed-traversable,
-             any.composition-prelude ==3.0.0.2,
-             composition-prelude -development,
-             any.config-ini ==0.2.4.0,
-             config-ini -enable-doctests,
-             any.containers ==0.6.4.1,
-             any.contravariant ==1.5.5,
-             contravariant +semigroups +statevar +tagged,
-             any.cpphs ==1.20.9.1,
-             cpphs -old-locale,
-             any.cryptohash-sha1 ==0.11.101.0,
-             any.cryptohash-sha256 ==0.11.102.1,
-             cryptohash-sha256 -exe +use-cbits,
-             any.data-clist ==0.2,
-             any.data-fix ==0.3.2,
-             any.deepseq ==1.4.5.0,
-             any.directory ==1.3.6.2,
-             any.disk-free-space ==0.1.0.1,
-             any.distributive ==0.6.2.1,
-             distributive +semigroups +tagged,
-             any.dlist ==1.0,
-             dlist -werror,
-             any.exceptions ==0.10.4,
-             any.filepath ==1.4.2.1,
-             any.free ==5.1.7,
-             any.fusion-plugin-types ==0.1.0,
-             any.generic-arbitrary ==0.2.0,
-             any.ghc ==9.0.2,
-             any.ghc-bignum ==1.1,
-             any.ghc-boot ==9.0.2,
-             any.ghc-boot-th ==9.0.2,
-             any.ghc-byteorder ==4.11.0.0.10,
-             any.ghc-heap ==9.0.2,
-             any.ghc-prim ==0.7.0,
-             any.ghci ==9.0.2,
-             any.happy ==1.20.0,
-             any.hashable ==1.4.0.2,
-             hashable +containers +integer-gmp -random-initial-seed,
-             any.haskus-utils-data ==1.4,
-             any.haskus-utils-types ==1.5.1,
-             any.haskus-utils-variant ==3.2.1,
-             any.heaps ==0.4,
-             any.hpc ==0.6.1.0,
-             any.hsc2hs ==0.68.8,
-             hsc2hs -in-ghc-tree,
-             any.hspec ==2.9.4,
-             any.hspec-core ==2.9.4,
-             any.hspec-discover ==2.9.4,
-             any.hspec-expectations ==0.8.2,
-             any.hspec-golden-aeson ==0.9.0.0,
-             any.http-io-streams ==0.1.6.0,
-             http-io-streams -brotli +fast-xor,
-             any.indexed-profunctors ==0.1.1,
-             any.indexed-traversable ==0.1.2,
-             any.indexed-traversable-instances ==0.1.1,
-             any.integer-logarithms ==1.0.3.1,
-             integer-logarithms -check-bounds +integer-gmp,
-             any.io-streams ==1.5.2.1,
-             io-streams +network -nointeractivetests +zlib,
-             any.language-c ==0.9.0.1,
-             language-c -allwarnings +iecfpextension +usebytestrings,
-             any.libarchive ==3.0.3.2,
-             libarchive -cross -low-memory +no-exe -system-libarchive,
-             any.libyaml-streamly ==0.2.1,
-             libyaml-streamly -no-unicode -system-libyaml,
-             any.lockfree-queue ==0.2.3.1,
-             any.lzma-static ==5.2.5.4,
-             any.megaparsec ==9.2.0,
-             megaparsec -dev,
-             any.microlens ==0.4.12.0,
-             any.microlens-mtl ==0.2.0.1,
-             any.microlens-th ==0.4.3.10,
-             any.monad-control ==1.0.3.1,
-             any.mtl ==2.2.2,
-             any.network ==3.1.2.7,
-             network -devel,
-             any.network-uri ==2.6.4.1,
-             any.openssl-streams ==1.2.3.0,
-             any.optics ==0.4,
-             any.optics-core ==0.4,
-             optics-core -explicit-generic-labels,
-             any.optics-extra ==0.4,
-             any.optics-th ==0.4,
-             any.optparse-applicative ==0.17.0.0,
-             optparse-applicative +process,
-             any.os-release ==1.0.2.1,
-             os-release -devel,
-             any.parallel ==3.2.2.0,
-             any.parsec ==3.1.14.0,
-             any.parser-combinators ==1.3.0,
-             parser-combinators -dev,
-             any.polyparse ==1.13,
-             any.pretty ==1.1.3.6,
-             any.pretty-terminal ==0.1.0.0,
-             any.primitive ==0.7.3.0,
-             any.process ==1.6.13.2,
-             any.profunctors ==5.6.2,
-             any.quickcheck-arbitrary-adt ==0.3.1.0,
-             any.quickcheck-io ==0.2.0,
-             any.random ==1.2.1,
-             any.recursion-schemes ==5.2.2.2,
-             recursion-schemes +template-haskell,
-             any.regex-base ==0.94.0.2,
-             any.regex-posix ==0.96.0.1,
-             regex-posix -_regex-posix-clib,
-             any.resourcet ==1.2.4.3,
-             any.retry ==0.8.1.2,
-             retry -lib-werror,
-             any.rts ==1.0.2,
-             any.safe ==0.3.19,
-             any.safe-exceptions ==0.1.7.2,
-             any.scientific ==0.3.7.0,
-             scientific -bytestring-builder -integer-simple,
-             any.semialign ==1.2.0.1,
-             semialign +semigroupoids,
-             any.semigroupoids ==5.3.7,
-             semigroupoids +comonad +containers +contravariant +distributive +tagged +unordered-containers,
-             any.setenv ==0.1.1.3,
-             any.split ==0.2.3.4,
-             any.splitmix ==0.1.0.4,
-             splitmix -optimised-mixer,
-             any.stm ==2.5.0.0,
-             any.streamly ==0.8.2,
-             streamly -debug -dev -fusion-plugin -has-llvm -inspection -limit-build-mem -no-fusion +opt -streamk -streamly-core -use-c-malloc -use-unliftio,
-             any.strict ==0.4.0.1,
-             strict +assoc,
-             any.strict-base ==0.4.0.0,
-             any.tagged ==0.8.6.1,
-             tagged +deepseq +transformers,
-             any.tagsoup ==0.14.8,
-             any.template-haskell ==2.17.0.0,
-             any.temporary ==1.3,
-             any.terminal-progress-bar ==0.4.1,
-             any.terminal-size ==0.3.2.1,
-             any.terminfo ==0.4.1.5,
-             any.text ==1.2.5.0,
-             any.text-short ==0.1.5,
-             text-short -asserts,
-             any.text-zipper ==0.11,
-             any.tf-random ==0.5,
-             any.th-abstraction ==0.4.3.0,
-             any.th-compat ==0.1.3,
-             any.th-lift ==0.8.2,
-             any.th-lift-instances ==0.1.19,
-             any.these ==1.1.1.1,
-             these +assoc,
-             any.time ==1.9.3,
-             any.time-compat ==1.9.6.1,
-             time-compat -old-locale,
-             any.transformers ==0.5.6.2,
-             any.transformers-base ==0.4.6,
-             transformers-base +orphaninstances,
-             any.transformers-compat ==0.7.1,
-             transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
-             any.unicode-data ==0.3.0,
-             unicode-data -ucd2haskell,
-             any.unix ==2.7.2.2,
-             any.unix-bytestring ==0.3.7.6,
-             any.unix-compat ==0.5.4,
-             unix-compat -old-time,
-             any.unliftio-core ==0.2.0.1,
-             any.unordered-containers ==0.2.17.0,
-             unordered-containers -debug,
-             any.uri-bytestring ==0.3.3.1,
-             uri-bytestring -lib-werror,
-             any.utf8-string ==1.0.2,
-             any.uuid-types ==1.0.5,
-             any.vector ==0.12.3.1,
-             vector +boundschecks -internalchecks -unsafechecks -wall,
-             any.versions ==5.0.3,
-             any.vty ==5.33,
-             any.witherable ==0.4.2,
-             any.word-wrap ==0.5,
-             any.word8 ==0.1.3,
-             any.xor ==0.0.1.1,
-             any.yaml-streamly ==0.12.1,
-             yaml-streamly +no-examples +no-exe,
-             any.zlib ==0.6.2.3,
-             zlib -bundled-c-zlib -non-blocking-ffi -pkg-config,
-             any.zlib-bindings ==0.1.1.5
-index-state: hackage.haskell.org 2022-03-15T16:43:02Z
--- a/cabal.project
+++ b/cabal.project
@@ -9,26 +9,18 @@ package ghcup
    flags: +tui

 source-repository-package
-  type: git
-  location: https://github.com/bgamari/terminal-size.git
-  tag: 34ea816bd63f75f800eedac12c6908c6f3736036
+    type: git
+    location: https://github.com/Bodigrim/tar
+    tag: ac197ec7ea4838dc2b4e22b9b888b080cedf29cf

-constraints: http-io-streams -brotli,
-             any.Cabal ==3.6.2.0,
-             any.aeson >= 2.0.1.0,
-             -- https://github.com/typeable/generic-arbitrary/issues/14
-             any.generic-arbitrary < 0.2.1
+source-repository-package
+    type: git
+    location: https://github.com/bgamari/terminal-size
+    tag: 34ea816bd63f75f800eedac12c6908c6f3736036
+
+constraints: http-io-streams -brotli

 package libarchive
  flags: -system-libarchive

-package aeson-pretty
-  flags: +lib-only
-
-package cabal-plan
-  flags: -exe
-
-package aeson
-  flags: +ordered-keymap
-
 allow-newer: base, ghc-prim, template-haskell, language-c
--- a/data/config.yaml
+++ b/data/config.yaml
@@ -8,10 +8,6 @@ verbose: False
 keep-dirs: Errors  # Always | Never | Errors
 # Which downloader to use
 downloader: Curl   # Curl | Wget | Internal
-# whether to run in offline mode
-no-network: False
-# whether/how to do gpg verification
-gpg-setting: GPGNone # GPGStrict | GPGLax | GPGNone

 # TUI key bindings,
 # see https://hackage.haskell.org/package/vty-5.31/docs/Graphics-Vty-Input-Events.html#t:Key
@@ -36,10 +32,6 @@ key-bindings:
  show-all-tools:
    KChar: 't'

-# The caching for the metadata files containing download info, depending on last access time
-# of the file. These usually are in '~/.ghcup/cache/ghcup-<ver>.yaml'.
-meta-cache: 300 # in seconds
-
 # Where to get GHC/cabal/hls download info/versions from. For more detailed explanation
 # check the 'URLSource' type in the code.
 url-source:
@@ -48,16 +40,12 @@ url-source:

  ## Example 1: Read download info from this location instead
  ## Accepts file/http/https scheme
-  ## Can also be an array of URLs or an array of 'Either GHCupInfo URL', in
-  ## which case they are merged right-biased (overwriting duplicate versions).
  # OwnSource: "file:///home/jule/git/ghcup-hs/ghcup-0.0.3.yaml"

-  ## Example 2: Add custom tarballs to the default downloads, overwriting duplicate versions.
-  ## Can also be an array of 'Either GHCupInfo URL', also see Example 3.
+  ## Example 2: Add custom tarballs to the default downloads, overwriting duplicate versions
  # AddSource:
    # Left:
-      # globalTools: {}
-      # toolRequirements: {}
+      # toolRequirements: {} # this is ignored
      # ghcupDownloads:
        # GHC:
          # 9.10.2:
@@ -70,8 +58,6 @@ url-source:
                    # dlSubdir: ghc-7.10.3
                    # dlHash: 01cfbad8dff1e8b34a5fdca8caeaf843b56e36af919e29cd68870d2588563db5

-  ## Example 3: Add multiple custom download files to the default downloads via right-biased merge (overwriting duplicate
-  ## versions).
+  ## Example 3: Add a custom download file to the default downloads, overwriting duplicate versions
  # AddSource:
-    # - Right: "file:///home/jule/git/ghcup-hs/ghcup-prereleases.yaml"
-    # - Right: "file:///home/jule/git/ghcup-hs/ghcup-custom.yaml"
+    # Right: "file:///home/jule/git/ghcup-hs/ghcup-custom.yaml"
--- a/data/build_mk/cross
+++ b/data/build_mk/cross
@@ -1,9 +0,0 @@
-V=0
-BUILD_MAN = NO
-BUILD_SPHINX_HTML = NO
-BUILD_SPHINX_PDF = NO
-HADDOCK_DOCS = NO
-ifneq "$(BuildFlavour)" ""
-include mk/flavours/$(BuildFlavour).mk
-endif
-Stage1Only = YES
--- a/data/build_mk/default
+++ b/data/build_mk/default
@@ -1,8 +0,0 @@
-V=0
-BUILD_MAN = NO
-BUILD_SPHINX_HTML = NO
-BUILD_SPHINX_PDF = NO
-HADDOCK_DOCS = YES
-ifneq "$(BuildFlavour)" ""
-include mk/flavours/$(BuildFlavour).mk
-endif
--- a/data/metadata
+++ b/data/metadata
--- a/docs/BUGS.md
+++ b/docs/BUGS.md
@@ -1 +0,0 @@
-# Known BUGS
--- a/docs/Discord-Logo-Black.svg
+++ b/docs/Discord-Logo-Black.svg
@@ -1,10 +0,0 @@
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--- a/docs/about.md
+++ b/docs/about.md
@@ -1,222 +0,0 @@
-# About
-
-All you wanted to know about GHCup.
-
-## Team
-
-### Author and Maintainer
-
-* [Julian Ospald](https://github.com/hasufell) (aka: maerwald, hasufell)
-
-### Collaborators
-
-* [Arjun Kathuria](https://github.com/arjunkathuria)
-* [Ben Gamari](https://github.com/bgamari)
-* [Javier Neira](https://github.com/jneira)
-
-### Contributors
-
-* amesgen
-* Chris Smith
-* Anton-Latukha
-* Brian McKenna
-* Huw campbell
-* Tom Ellis
-* Sigmund Vestergaard
-* Ron Toland
-* Paolo Martini
-* Mario Lang
-* Jan Hrček
-* vglfr
-* Fendor
-* Enrico Maria De Angelis
-* Emily Pillmore
-* Colin Barrett
-* Artur Gajowy
-
-### Sponsors
-
-* All [opencollective](https://opencollective.com/ghcup#category-CONTRIBUTE) contributors
-* [haskell.org](https://www.haskell.org/haskell-org-committee/) via CI and infrastructure
-* [Haskell Foundation](https://haskell.foundation/affiliates/) via affiliation
-
-## How to help
-
-* if you want to contribute code or documentation, check out the [issue tracker](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues) and the [Development guide](./dev.md)
-* if you want to propose features or write user feedback, feel free to [open a ticket](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/new?issue)
-* if you want to donate to the project, visit our [opencollective](https://opencollective.com/ghcup#category-CONTRIBUTE) page
-
-## Design goals
-
-1. simplicity
-2. non-interactive CLI interface
-3. portable
-4. do one thing and do it well (UNIX philosophy)
-
-## Non-goals
-
-1. invoking `sudo`, `apt-get` or *any* package manager
-2. handling system packages
-3. handling cabal projects
-4. being a stack alternative
-
-## How
-
-Installs a specified GHC version into `~/.ghcup/ghc/<ver>`, and places `ghc-<ver>` symlinks in `~/.ghcup/bin/`.
-
-Optionally, an unversioned `ghc` link can point to a default version of your choice.
-
-This uses precompiled GHC binaries that have been compiled on fedora/debian by [upstream GHC](https://www.haskell.org/ghc/download_ghc_8_6_1.html#binaries).
-
-Alternatively, you can also tell it to compile from source (note that this might fail due to missing requirements).
-
-cabal-install/HLS/stack are installed in `~/.ghcup/bin/<tool>-<ver>` and have unversioned symlinks to the latest version by default (`~/.ghcup/bin/<tool>-<ver>`).
-
-## Known users
-
-* Github actions:
-	- [actions/virtual-environments](https://github.com/actions/virtual-environments)
-	- [haskell/actions/setup](https://github.com/haskell/actions/tree/main/setup)
-* mirrors:
-	- [sjtug](https://mirror.sjtu.edu.cn/docs/ghcup)
-* tools:
-	- [vabal](https://github.com/Franciman/vabal)
-
-## Known problems
-
-### Custom ghc version names
-
-When installing ghc bindists with custom version names as outlined in
-[installing custom bindists](#installing-custom-bindists), then cabal might
-be unable to find the correct `ghc-pkg` (also see [#73](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/73))
-if you use `cabal build --with-compiler=ghc-foo`. Instead, point it to the full path, such as:
-`cabal build --with-compiler=$HOME/.ghcup/ghc/<version-name>/bin/ghc` or set that GHC version
-as the current one via: `ghcup set ghc <version-name>`.
-
-This problem doesn't exist for regularly installed GHC versions.
-
-### Limited distributions supported
-
-Currently only GNU/Linux distributions compatible with the [upstream GHC](https://www.haskell.org/ghc/download_ghc_8_6_1.html#binaries) binaries are supported.
-
-### Precompiled binaries
-
-Since this uses precompiled binaries you may run into
-several problems.
-
-#### Missing libtinfo (ncurses)
-
-You may run into problems with *ncurses* and **missing libtinfo**, in case
-your distribution doesn't use the legacy way of building
-ncurses and has no compatibility symlinks in place.
-
-Ask your distributor on how to solve this or
-try to compile from source via `ghcup compile <version>`.
-
-#### Libnuma required
-
-This was a [bug](https://ghc.haskell.org/trac/ghc/ticket/15688) in the build system of some GHC versions that lead to
-unconditionally enabled libnuma support. To mitigate this you might have to install the libnuma
-package of your distribution. See [here](https://gitlab.haskell.org/haskell/ghcup/issues/58) for a discussion.
-
-### Compilation
-
-Although this script can compile GHC for you, it's just a very thin
-wrapper around the build system. It makes no effort in trying
-to figure out whether you have the correct toolchain and
-the correct dependencies. Refer to [the official docs](https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Linux)
-on how to prepare your environment for building GHC.
-
-### Stack support
-
-There may be a number of bugs when trying to make ghcup installed GHC versions work with stack,
-such as:
-
- https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/188
-
-Further, stack's upgrade procedure may break/confuse ghcup. There are a number of integration
-issues discussed here:
-
- https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/153
-
-### Windows support
-
-Windows support is in early stages. Since windows doesn't support symbolic links properly,
-ghcup uses a [shimgen wrapper](https://github.com/71/scoop-better-shimexe). It seems to work
-well, but there may be unknown issues with that approach.
-
-Windows 7 and Powershell 2.0 aren't well supported at the moment, also see:
-
- https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/140
- https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/197
-
-## FAQ
-
-### Why reimplement stack?
-
-GHCup is not a reimplementation of stack. The only common part is automatic installation of GHC,
-but even that differs in scope and design.
-
-### Why should I use ghcup over stack?
-
-GHCup is not a replacement for stack. Instead, it supports installing and managing stack versions.
-It does the same for cabal, GHC and HLS. As such, It doesn't make a workflow choice for you.
-
-### Why should I let ghcup manage stack?
-
-You don't need to. However, some users seem to prefer to have a central tool that manages cabal and stack
-at the same time. Additionally, it can allow better sharing of GHC installation across these tools.
-Also see:
-
-* https://docs.haskellstack.org/en/stable/yaml_configuration/#system-ghc
-* https://github.com/commercialhaskell/stack/pull/5585
-
-### Why does ghcup not use stack code?
-
-1. GHCup started as a shell script. At the time of rewriting it in Haskell, the authors didn't even know that stack exposes *some* of its [installation API](https://hackage.haskell.org/package/stack-2.5.1.1/docs/Stack-Setup.html)
-2. it doesn't support cabal installation, which was the main motivation behind GHCup back then
-3. depending on a codebase as big as stack for a central part of one's application without having a short contribution pipeline would likely have caused stagnation or resulted in simply copy-pasting the relevant code in order to adjust it
-4. it's not clear how GHCup would have been implemented with the provided API. It seems the codebases are fairly different. GHCup does a lot of symlink handling to expose a central `bin/` directory that users can easily put in PATH, without having to worry about anything more. It also provides explicit removal functionality, GHC cross-compilation, a TUI, etc etc.
-
-### Why not unify...
-
-#### ...stack and Cabal and do away with standalone installers
-
-GHCup is not involved in such decisions. cabal-install and stack might have a
-sufficiently different user experience to warrant having a choice.
-
-#### ...installer implementations and have a common library
-
-This sounds like an interesting goal. However, GHC installation isn't a hard engineering problem
-and the shared code wouldn't be too exciting. For such an effort to make sense, all involved
-parties would need to collaborate and have a short pipeline to get patches in.
-
-It's true this would solve the integration problem, but following unix principles, we can
-do similar via **hooks**. Both cabal and stack can support installation hooks. These hooks
-can then call into ghcup or anything else, also see:
-
-* https://github.com/haskell/cabal/issues/7394
-* https://github.com/commercialhaskell/stack/pull/5585
-
-#### ...installers (like, all of it)
-
-So far, there hasn't been an open discussion about this. Is this even a good idea?
-Sometimes projects converge eventually if their overlap is big enough, sometimes they don't.
-
-While unification sounds like a simplification of the ecosystem, it also takes away choice.
-Take `curl` and `wget` as an example.
-
-### Why not support windows?
-
-Windows is supported since GHCup version 0.1.15.1.
-
-### Why the haskell reimplementation?
-
-GHCup started as a portable posix shell script of maybe 50 LOC. GHC installation itself can be carried out in
-about ~3 lines of shell code (download, unpack , configure+make install). However, much convenient functionality
-has been added since, as well as ensuring that all operations are safe and correct. The shell script ended up with
-over 2k LOC, which was very hard to maintain.
-
-The main concern when switching from a portable shell script to haskell was platform/architecture support.
-However, ghcup now re-uses GHCs CI infrastructure and as such is perfectly in sync with all platforms that
-GHC supports.
--- a/docs/css/extra.css
+++ b/docs/css/extra.css
@@ -1,333 +0,0 @@
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-  --theme-purple: #5E5184;
-  --theme-purple-dark: rgba(69, 59, 97, 0.5);
-  --ukraine-top: #0057B8;
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-{
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-.index-ghcup-hero {
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-
-/* Definition List styles */
-
-dd {
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-
-/* Homepage */
-
-body.homepage div.jumbotron {
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-.center {
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-.col-md-9 img.main-logo {
-  border: 0px; 
-  padding: 0px;
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-.ghcup-intro {
-  text-align: center;
-}
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-.main-buttons {
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-.ghcup-command:before {
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-  margin-left: 15px;
-}
-
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-.command-button pre {
-
-}
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-}
-
-div.command-button button:focus {
-  background-color: #04aa6d;
-}
-
-footer > hr {
-  border-top: 0.5px solid #CCC;
-}
-
-.qi-container {
-  display: flex;
-  flex-direction: column;
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-  box-sizing: border-box;
-  padding: 0.75rem;
-  background-color: rgb(250, 250, 250);
-  margin-top: 2rem;
-  margin-bottom: 2rem;
-  margin-left: auto;
-  margin-right: auto;
-  border-radius: 3px;
-  border: 1px solid rgb(204, 204, 204);
-  box-shadow:
-    4px 8px 10px -6px rgb(204, 204, 204),
-    4px 8px 10px -6px rgb(153, 111, 194);
-}
-
-@media only screen and (max-width:1000px) {
-  .qi-container {
-    box-shadow:
-      4px 10px 10px -6px rgb(204, 204, 204),
-      4px 10px 10px -9px rgb(153, 111, 194);
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-
-.index-cta-donate .donate-button a {
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-  left: 0;
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-}
-
-.index-cta-donate .donate-button {
-  margin: 10px auto;
-  position: relative;
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-  background: none;
-  padding: none;
-  border: none;
-  background: url("https://opencollective.com/webpack/donate/button@2x.png?color=blue");
-  width: 35%;
-  min-width: 240px;
-  max-width: 280px;
-  height: 40px;
-  background-size: contain;
-  background-repeat: no-repeat;
-}
-
-.ghcup-os-container {
-  width: 100%;
-  margin: 10px 0;
-}
-.ghcup-os-container > * {
-  text-align: center;
-}
-
-/* fix list overflows (esp about page) */
-ul > li {
-  overflow-wrap: anywhere;
-}
-
-
-.footer {
-  color: grey;
-  font-size: 0.7em;
-  margin-top: 1rem;
-  margin-bottom: 1rem;
-}
-
-.footer div.show-all-platforms {
-  display: inline-block;
-}
-
-#help, #collective {
-  display: block;
-  text-align: center;
-}
-
-#help img {
-  border: none;
-  margin: 0px;
-  height: 24px;
-}
-
-.ghcup-help {
-  margin: 10px auto;
-  padding: 10px 0;
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-
-#collective img {
-  border: none;
-  margin: 0px;
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-
-#collective {
-  margin-top: 10px;
-}
-
--- a/docs/dev.md
+++ b/docs/dev.md
@@ -1,122 +0,0 @@
-# Development
-
-All you wanted to know about GHCup development.
-
-## Module graph
-
-[![Module graph](./modules_small.svg){: .center style="width:900px"}](./modules_wide.svg)
-
-Main functionality is in `GHCup` module. Utility functions are
-organised tree-ish in `GHCup.Utils` and `GHCup.Utils.*`.
-
-Anything dealing with ghcup specific directories is in
-`GHCup.Utils.Dirs`.
-
-Download information on where to fetch bindists from is in the [ghcup-metadata](https://github.com/haskell/ghcup-metadata) repository.
-
-## Design decisions
-
-### Using [Excepts](https://hackage.haskell.org/package/haskus-utils-variant-3.0/docs/Haskus-Utils-Variant-Excepts.html) as a beefed up ExceptT
-
-This is an open variant, similar to [plucky](https://hackage.haskell.org/package/plucky) or [oops](https://github.com/i-am-tom/oops) and allows us to combine different error types. Maybe it is too much and it's a little bit [unergonomic](https://github.com/haskus/packages/issues/32) at times. If it really hurts maintenance, it will be removed. It was more of an experiment.
-
-### No use of haskell-TLS
-
-I consider haskell-TLS an interesting experiment, but not a battle-tested and peer-reviewed crypto implementation. There is little to no research about what the intricacies of using haskell for low-level crypto are and how vulnerable such binaries are. Instead, we use either curl the binary or wget. There's also an implementation based on OpenSSL bindings, but it isn't enabled by default, since it would complicate shipping static binaries.
-
-### Optics instead of lens
-
-They're a little safer (less Monoid weirdness with view) and have better error messages. Consider the following with [lens](https://hackage.haskell.org/package/lens):
-
-```
-> view (_Just . to (++ "abc")) Nothing
-""
-```
-
-vs [optics](https://hackage.haskell.org/package/optics):
-
-```
-> view (_Just % to (++ "abc")) Nothing
-
-<interactive>:2:1: error:
-    • An_AffineFold cannot be used as A_Getter
-    • In the expression: view (_Just % to (++ "abc")) Nothing
-      In an equation for ‘it’: it = view (_Just % to (++ "abc")) Nothing
-```
-
-### StrictData on by default
-
-Kazu Yamamoto [explained it in his PR](https://github.com/yesodweb/wai/pull/752#issuecomment-501531386) very well. I like to agree with him. The instances where we need non-strict behavior, we annotate it.
-
-`Strict` is a little more odd as a default, since it depends on how you define your functions as well.
-
-## Code style and formatting
-
-Unfortunately, code formatters are semi-broken on this codebase, due to TH and CPP.
-
-Some light suggestions:
-
-1. mtl-style preferred
-2. no overly pointfree style
-3. use `where` a lot, so the main function body reads like prose
-4. documentation is part of the code
-
-## Common Tasks
-
-### Adding a new GHC version
-
-Head over to: [https://github.com/haskell/ghcup-metadata#adding-a-new-ghc-version](https://github.com/haskell/ghcup-metadata#adding-a-new-ghc-version)
-
-### Adding a new CLI command
-
-An example illustration on how to deal with [optparse-applicative](https://hackage.haskell.org/package/optparse-applicative) can be seen here: [https://gitlab.haskell.org/haskell/ghcup-hs/-/commit/c19dd5ee8b2edbaf0336af143f1c75b6f4843e26](https://gitlab.haskell.org/haskell/ghcup-hs/-/commit/c19dd5ee8b2edbaf0336af143f1c75b6f4843e26)
-
-Every subcommand now lives in its own module under [GHCup.OptParse.MyCommand](https://gitlab.haskell.org/haskell/ghcup-hs/-/tree/master/app/ghcup/GHCup/OptParse).
-
-## Major refactors
-
-1. First major refactor included adding cross support. This added
-   `GHCTargetVersion`, which includes the target in addition to the version.
-   Most of the `Version` parameters to functions had to be replaced with
-   that and ensured the logic is consistent for cross and non-cross
-   installs.
-2. This refactor added windows support wrt [#130](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/130).
-   The major changes here were switching `hpath` library out for `filepath`/`directory` (sadly) and
-   introducing a non-unix way of handling processes via the `process` library. It also introduced considerable
-   amounts of CPP wrt file handling, installation etc.
-3. This refactor split up the huge `Main.hs` and put every subcommand in its own module: [#212](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/212)
-
-# Releasing
-
-1. Update version in `ghcup.cabal`
-
-2. Update `GHCup.Version` module. `ghcupURL` must only be updated if we change the `GHCupInfo` type or the YAML representation of it. The version of the YAML represents the change increments. `ghcUpVer` is the current application version, read from `ghcup.cabal`.
-
-3. Add ChangeLog entry
-
-4. If a new ghcup yaml version is needed, create one at [ghcup-metadata repo](https://github.com/haskell/ghcup-metadata) and push to a temporary release branch, then update the `data/metadata` submodule in ghcup-hs repo to that branch, so CI can pass
-
-5. Commit and git push with tag. Wait for tests to succeed and release artifacts to build.
-
-6. Download release artifacts and upload them `downloads.haskell.org/~ghcup` along with checksum files (also check `scripts/releasing/pull_release_artifacts.sh` and `scripts/releasing/sftp-upload-artifacts.sh`)
-
-7. Add ghcup release artifacts to ALL yaml files, see [ghcup-metadata repo](https://github.com/haskell/ghcup-metadata)
-
-8. Upload the final `ghcup-<ver>.yaml` (and a detached GPG sig of it) to `webhost.haskell.org/ghcup/data/` (for yaml versions <= 0.0.6) as well as [https://github.com/haskell/ghcup-metadata](https://github.com/haskell/ghcup-metadata) (for all versions).
-
-9. Update version in `scripts/bootstrap/bootstrap-haskell` (`ghver` variable at the top of the script)
-
-10. Upload `scripts/bootstrap/bootstrap-haskell` and `scripts/bootstrap/bootstrap-haskell.ps1` to `webhost.haskell.org/ghcup/sh/`
-
-11. Update the top-level ghcup symlinks at `downloads.haskell.org/~ghcup` (see `scripts/releasing/sftp-symlink-artifacts.sh`)
-
-12. Update the `data/metadata` submodule in ghcup-hs repo to master
-
-13. Do hackage release
-
-14. Post on reddit/discourse/etc. and collect rewards
-
-# Documentation
-
-This documentation page is built via [mkdocs](https://www.mkdocs.org/), see `mkdocs.yml` and `docs/` subfolder.
-The module graph needs [graphmod](https://github.com/yav/graphmod) and is generated via `scripts/dev/modgraph.sh`.
--- a/docs/expand-piece.svg
+++ b/docs/expand-piece.svg
@@ -1,65 +0,0 @@
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--- a/docs/ghcup.gif
+++ b/docs/ghcup.gif
--- a/docs/guide.md
+++ b/docs/guide.md
@@ -1,317 +0,0 @@
-# User Guide
-
-This is a more in-depth guide specific to GHCup. `ghcup --help` is your friend.
-
-## Basic usage
-
-For the simple interactive TUI (not available on windows), run:
-
-```sh
-ghcup tui
-```
-
-For the full functionality via cli:
-
-```sh
-# list available ghc/cabal versions
-ghcup list
-
-# install the recommended GHC version
-ghcup install ghc
-
-# install a specific GHC version
-ghcup install ghc 8.2.2
-
-# set the currently "active" GHC version
-ghcup set ghc 8.4.4
-
-# install cabal-install
-ghcup install cabal
-
-# update ghcup itself
-ghcup upgrade
-```
-
-### Tags and shortcuts
-
-GHCup has a number of tags and version shortcuts, that can be used as arguments to **install**/**set** etc.
-All of the following are valid arguments to `ghcup install ghc`:
-
-* `latest`, `recommended`
-* `base-4.15.1.0`
-* `9.0.2`, `9.0`, `9`
-
-If the argument is omitted, the default is `recommended`.
-
-## Manpages
-
-For man pages to work you need [man-db](http://man-db.nongnu.org/) as your `man` provider, then issue `man ghc`. Manpages only work for the currently set ghc.
-`MANPATH` may be required to be unset.
-
-## Shell-completion
-
-Shell completions are in [scripts/shell-completions](https://gitlab.haskell.org/haskell/ghcup-hs/-/tree/master/scripts/shell-completions) directory of this repository.
-
-For bash: install `shell-completions/bash`
-as e.g. `/etc/bash_completion.d/ghcup` (depending on distro)
-and make sure your bashrc sources the startup script
-(`/usr/share/bash-completion/bash_completion` on some distros).
-
-# Configuration
-
-A configuration file can be put in `~/.ghcup/config.yaml`. The default config file
-explaining all possible configurations can be found in this repo: [config.yaml](https://gitlab.haskell.org/haskell/ghcup-hs/-/blob/master/data/config.yaml).
-
-Partial configuration is fine. Command line options always override the config file settings.
-
-## Env variables
-
-This is the complete list of env variables that change GHCup behavior:
-
-* `GHCUP_USE_XDG_DIRS`: see [XDG support](#xdg-support) above
-* `TMPDIR`: where ghcup does the work (unpacking, building, ...)
-* `GHCUP_INSTALL_BASE_PREFIX`: the base of ghcup (default: `$HOME`)
-* `GHCUP_CURL_OPTS`: additional options that can be passed to curl
-* `GHCUP_WGET_OPTS`: additional options that can be passed to wget
-* `GHCUP_GPG_OPTS`: additional options that can be passed to gpg
-* `GHCUP_SKIP_UPDATE_CHECK`: Skip the (possibly annoying) update check when you run a command
-* `CC`/`LD` etc.: full environment is passed to the build system when compiling GHC via GHCup
-
-### XDG support
-
-To enable XDG style directories, set the environment variable `GHCUP_USE_XDG_DIRS` to anything.
-
-Then you can control the locations via XDG environment variables as such:
-
-* `XDG_DATA_HOME`: GHCs will be unpacked in `ghcup/ghc` subdir (default: `~/.local/share`)
-* `XDG_CACHE_HOME`: logs and download files will be stored in `ghcup` subdir (default: `~/.cache`)
-* `XDG_BIN_HOME`: binaries end up here (default: `~/.local/bin`)
-* `XDG_CONFIG_HOME`: the config file is stored in `ghcup` subdir as `config.yaml` (default: `~/.config`)
-
-**Note that `ghcup` makes some assumptions about structure of files in `XDG_BIN_HOME`. So if you have other tools
-installing e.g. stack/cabal/ghc into it, this will likely clash. In that case consider disabling XDG support.**
-
-## Caching
-
-GHCup has a few caching mechanisms to avoid redownloads. All cached files end up in `~/.ghcup/cache` by default.
-
-### Downloads cache
-
-Downloaded tarballs (such as GHC, cabal, etc.) are not cached by default unless you pass `ghcup --cache` or set caching
-in your [config](#configuration) via `ghcup config set cache true`.
-
-### Metadata cache
-
-The metadata files (also see [github.com/haskell/ghcup-metadata](https://github.com/haskell/ghcup-metadata))
-have a 5 minutes cache per default depending on the last access time of the file. That means if you run
-`ghcup list` 10 times in a row, only the first time will trigger a download attempt.
-
-### Clearing the cache
-
-If you experience problems, consider clearing the cache via `ghcup gc --cache`.
-
-## Metadata
-
-The metadata are the files that describe tool versions, where to download them etc. and
-can be viewed here: [https://github.com/haskell/ghcup-metadata](https://github.com/haskell/ghcup-metadata)
-
-### Mirrors
-
-GHCup allows to use custom mirrors/download-info hosted by yourself or 3rd parties.
-
-To use a mirror, set the following option in `~/.ghcup/config.yaml`:
-
-```yml
-url-source:
-  # Accepts file/http/https scheme
-  OwnSource: "https://some-url/ghcup-0.0.6.yaml"
-```
-
-See [config.yaml](https://gitlab.haskell.org/haskell/ghcup-hs/-/blob/master/data/config.yaml)
-for more options.
-
-Alternatively you can do it via a cli switch:
-
-```sh
-ghcup --url-source=https://some-url/ghcup-0.0.6.yaml list
-```
-
-#### Known mirrors
-
-1. [https://mirror.sjtu.edu.cn/docs/ghcup](https://mirror.sjtu.edu.cn/docs/ghcup)
-
-### (Pre-)Release channels
-
-A release channel is basically just a metadata file location. You can add additional release
-channels that complement the default one, such as the **prerelease channel** like so:
-
-```sh
-ghcup config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml
-```
-
-This will result in `~/.ghcup/config.yaml` to contain this record:
-
-```yml
-url-source:
-  AddSource:
-  - Right: https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml
-```
-
-You can add as many channels as you like. They are combined under *Last*, so versions from the prerelease channel
-here overwrite the default ones, if any.
-
-To remove the channel, delete the entire `url-source` section or set it back to the default:
-
-```yml
-url-source:
-  GHCupURL: []
-```
-
-If you want to combine your release channel with a mirror, you'd do it like so:
-
-```yml
-url-source:
-  OwnSource:
-  # base metadata
-  - "https://mirror.sjtu.edu.cn/ghcup/yaml/ghcup/data/ghcup-0.0.6.yaml"
-  # prerelease channel
-  - "https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml"
-```
-
-# More on installation
-
-## Installing custom bindists
-
-There are a couple of good use cases to install custom bindists:
-
-1. manually built bindists (e.g. with patches)
-    - example: `ghcup install ghc -u 'file:///home/mearwald/tmp/ghc-eff-patches/ghc-8.10.2-x86_64-deb10-linux.tar.xz' 8.10.2-eff`
-2. GHC head CI bindists
-    - example: `ghcup install ghc -u 'https://gitlab.haskell.org/api/v4/projects/1/jobs/artifacts/master/raw/ghc-x86_64-fedora27-linux.tar.xz?job=validate-x86_64-linux-fedora27' head`
-3. DWARF bindists
-    - example: `ghcup install ghc -u 'https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-deb10-linux-dwarf.tar.xz' 8.10.2-dwarf`
-
-Since the version parser is pretty lax, `8.10.2-eff` and `head` are both valid versions
-and produce the binaries `ghc-8.10.2-eff` and `ghc-head` respectively.
-GHCup always needs to know which version the bindist corresponds to (this is not automatically
-detected).
-
-## Compiling GHC from source
-
-Compiling from source is supported for both source tarballs and arbitrary git refs. See `ghcup compile ghc --help`
-for a list of all available options.
-
-If you need to overwrite the existing `build.mk`, check the default files
-in [data/build_mk](https://gitlab.haskell.org/haskell/ghcup-hs/-/tree/master/data/build_mk), copy them somewhere, adjust them and
-pass `--config path/to/build.mk` to `ghcup compile ghc`.
-Common `build.mk` options are explained [here](https://gitlab.haskell.org/ghc/ghc/-/wikis/building/using#build-configuration).
-
-Make sure your system meets all the [prerequisites](https://gitlab.haskell.org/ghc/ghc/-/wikis/building/preparation).
-
-### Cross support
-
-ghcup can compile and install a cross GHC for any target. However, this
-requires that the build host has a complete cross toolchain and various
-libraries installed for the target platform.
-
-Consult the GHC documentation on the [prerequisites](https://gitlab.haskell.org/ghc/ghc/-/wikis/building/cross-compiling#tools-to-install).
-For distributions with non-standard locations of cross toolchain and
-libraries, this may need some tweaking of `build.mk` or configure args.
-See `ghcup compile ghc --help` for further information.
-
-## Isolated installs
-
-Ghcup also enables you to install a tool (GHC, Cabal, HLS, Stack) at an isolated location of your choosing.
-These installs, as the name suggests, are separate from your main installs and DO NOT conflict with them.
-
-
- No symlinks are made to these isolated installed tools, you'd have to manually point to them wherever you intend to use them.
-
- These installs, can also NOT be deleted from ghcup, you'd have to go and manually delete these.
-
-You need to use the `--isolate` or `-i` flag followed by the directory path.
-
-Examples:
-
-1. install an isolated GHC version at location /home/user/isolated_dir/ghc/  
-    - `ghcup install ghc 8.10.5 --isolate /home/user/isolated_dir/ghc`
-
-2. isolated install Cabal at a location you desire  
-    - `ghcup install cabal --isolate /home/username/my_isolated_dir/`
-
-3. do an isolated install with a custom bindist  
-    - `ghcup install ghc --isolate /home/username/my_isolated_dir/ -u 'https://gitlab.haskell.org/api/v4/projects/1/jobs/artifacts/master/raw/ghc-x86_64-fedora27-linux.tar.xz?job=validate-x86_64-linux-fedora27' head`
-
-4. isolated install HLS  
-    - `ghcup install hls --isolate /home/username/dir/hls/`
-
-5. you can even compile ghc to an isolated location.  
-    - `ghcup compile ghc -j 4 -v 9.0.1 -b 8.10.5 -i /home/username/my/dir/ghc` 
-
-## Continuous integration
-
-On windows, ghcup can be installed automatically on a CI runner non-interactively like so:
-
-```ps
-Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $false,$true,$true,$false,$false,$false,$false,"C:\"
-```
-
-On linux/darwin/freebsd, run the following on your runner:
-
-```sh
-curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_MINIMAL=1 sh
-```
-
-This will just install `ghcup` and on windows additionally `msys2`.
-
-For the full list of env variables and parameters to tweak the script behavior, see:
-
-* [bootstrap-haskell for linux/darwin/freebsd](https://gitlab.haskell.org/haskell/ghcup-hs/-/blob/master/scripts/bootstrap/bootstrap-haskell#L7)
-* [bootstrap-haskell.ps1 for windows](https://gitlab.haskell.org/haskell/ghcup-hs/-/blob/master/scripts/bootstrap/bootstrap-haskell.ps1#L17)
-
-### github workflows
-
-On github workflows you can use [https://github.com/haskell/actions/](https://github.com/haskell/actions/).
-GHCup itself is also pre-installed on all platforms, but may use non-standard install locations.
-
-## GPG verification
-
-GHCup supports verifying the GPG signature of the metadata file. The metadata file then contains SHA256 hashes of all downloads, so
-this is cryptographically secure.
-
-First, obtain the gpg key:
-
-```sh
-gpg --batch --keyserver keys.openpgp.org --recv-keys 7784930957807690A66EBDBE3786C5262ECB4A3F
-```
-
-Then verify the gpg key in one of these ways:
-
-1. find out where I live and visit me to do offline key signing
-2. figure out my mobile phone number and call me to verify the fingerprint
-3. more boring: contact me on Libera IRC (`maerwald`) and verify the fingerprint
-
-Once you've verified the key, you have to figure out if you trust me.
-
-If you trust me, then you can configure gpg in `~/.ghcup/config.yaml`:
-
-```yml
-gpg-setting: GPGLax # GPGStrict | GPGLax | GPGNone
-```
-
-In `GPGStrict` mode, ghcup will fail if verification fails. In `GPGLax` mode it will just print a warning.
-You can also pass the mode via `ghcup --gpg <strict|lax|none>`.
-   
-# Tips and tricks
-
-## ghcup run
-
-If you don't want to explicitly switch the active GHC all the time and are using
-tools that rely on the plain `ghc` binary, GHCup provides an easy way to execute
-commands with a certain toolchain prepended to PATH, e.g.:
-
-```sh
-ghcup run --ghc 8.10.7 --cabal latest --hls latest --stack latest --install -- code Setup.hs
-```
-
-This will execute vscode with GHC set to 8.10.7 and all other tools to their latest version.
--- a/docs/haskell_logo.png
+++ b/docs/haskell_logo.png
--- a/docs/index.md
+++ b/docs/index.md
@@ -1,100 +0,0 @@
---
-hide:
-  - navigation
-  - toc
---
-
-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
-<script src="javascripts/extra.js"></script>
-
-
-<section class="index-ghcup-hero">
-  <img alt="haskell logo" src="./haskell_logo.png" />
-  <h1>GHCup</h1>
-</section>
-
-<p class="ghcup-intro">GHCup is an installer for the general purpose language <a href="https://www.haskell.org">Haskell</a>.</p>
-
-<div class="text-center main-buttons">
-<a href="install/" class="btn btn-primary" role="button">Getting Started</a>
-<a href="steps/" class="btn btn-primary" role="button">First steps</a>
-<a href="guide/" class="btn btn-primary" role="button">User Guide</a>
-</div>
-
-<section class="qi-container">
-
-    <div class="ghcup-os-container" id="ghcup-instructions-unix">
-      <h3>To install on Linux, macOS, FreeBSD or <a href="https://docs.microsoft.com/en-us/windows/wsl/"> WSL2</a></h3>
-      <p>run the following in a terminal (as a non-root user):<p>
-      <div class="command-button">
-	    <pre>
-            <span class="ghcup-command" id="ghcup-command-linux">curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span>
-          </pre>
-        <button class="btn" onclick="copyToClipboardNux()" id="ghcup-linux-button"><i class="fa fa-copy"></i></button>
-      </div>
-      <span>
-      </span>
-	<div class="footer">
-		<a href="https://gitlab.haskell.org/haskell/ghcup-hs/-/blob/master/scripts/bootstrap/bootstrap-haskell" target="_blank">What does this do?</a> <b>&nbsp;&middot;&nbsp;</b> <a href="https://www.haskell.org/ghcup/install/#manual-install">I don't like curl | sh</a> <div class="show-all-platforms"><b>&nbsp;&middot;&nbsp;</b> <a class="show-all-platforms-button" href="#">Show all platforms</a></div></p>
-	</div>
-    </div>
-
-    <div class="ghcup-os-container" id="ghcup-instructions-win">
-      <h3>To install on Windows</h3>
-      <p>run the following in a PowerShell session (as a non-admin user):<p>
-
-      <div class="command-button">
-	    <pre>
-          <span class="ghcup-command" id="ghcup-command-windows">Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $true
-          </span>
-        </pre>
-        <button class="btn" onclick="copyToClipboardWin()" id="ghcup-windows-button"><i class="fa fa-copy"></i></button>
-      </div>
-	<div class="footer">
-		<a href="https://gitlab.haskell.org/haskell/ghcup-hs/-/blob/master/scripts/bootstrap/bootstrap-haskell.ps1" target="_blank">What does this do?</a> <b>&nbsp;&middot;&nbsp;</b> <a href="https://www.haskell.org/ghcup/install/#manual-install">I don't like curl | sh</a> <div class="show-all-platforms"><b>&nbsp;&middot;&nbsp;</b> <a class="show-all-platforms-button" href="#">Show all platforms</a></div></p>
-	</div>
-    </div>
-</section>
-
-<p id="help" class="ghcup-help">
-  Need help? Ask on
-  <span>
-    <a href="https://kiwiirc.com/nextclient/irc.libera.chat/?nick=Guest%7C?#haskell,#haskell-ghcup">
-      <img src="irc.svg" alt="" />
-      IRC
-    </a>
-  </span>,
-  <span>
-    <a href="https://discord.gg/pKYf3zDQU7">
-      <img src="Discord-Logo-Black.svg" alt="" />
-      Discord
-    </a>
-  </span>,
-  <span>
-    <a href="https://app.element.io/#/room/#haskell-tooling:matrix.org">
-      <img src="Matrix_logo.svg" alt=""/>
-    </a>
-  </span>
-   or
-   <span>
-     <a href="https://gitlab.haskell.org/haskell/ghcup-hs/issues">
-       report a bug
-       <img src="Octicons-bug.svg" alt="" />
-     </a>
-   </span>
-</p>
-
-<script type="text/javascript" src="javascripts/ghcup.js"></script>
-
-
----
-
-
-![GHCup](./ghcup.gif){: .center style="width:700px"}
-
-<section class="index-cta-donate">
-  <button class="donate-button">
-    <a href="https://opencollective.com/ghcup#category-CONTRIBUTE" class="donate-badge" />
-	</a>
-    </button>
-</section>
--- a/docs/install.md
+++ b/docs/install.md
@@ -1,208 +0,0 @@
-# Getting started
-
-GHCup makes it easy to install specific versions of GHC on GNU/Linux,
-macOS (aka Darwin), FreeBSD and Windows and can also bootstrap a fresh [Haskell developer environment](./install/#supported-tools) from scratch.
-It follows the UNIX philosophy of [do one thing and do it well](https://en.wikipedia.org/wiki/Unix_philosophy#Do_One_Thing_and_Do_It_Well). Similar in scope to [rustup](https://github.com/rust-lang-nursery/rustup.rs), [pyenv](https://github.com/pyenv/pyenv) and [jenv](http://www.jenv.be).
-
-## Installation
-
-The following commands will download the `ghcup` binary into `~/.ghcup/bin` (or `C:\ghcup\bin` on windows) and then
-run it to interactively install the [Haskell Toolchain](#supported-tools). These commands should be run as **non-root/non-admin
-user**.
-
-For Linux, macOS, FreeBSD or Windows Subsystem 2 for Linux, run this in a terminal:
-
-```sh
-curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
-```
-
-For Windows, run this in a PowerShell session:
-
-```psh
-Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $true
-```
-
-There's also a [youtube video](https://www.youtube.com/watch?v=bB4fmQiUYPw) explaining installation on windows.
-
-If you want to know what these scripts do, check out the [source code at the repository](https://gitlab.haskell.org/haskell/ghcup-hs/-/tree/master/scripts/bootstrap). Advanced users may want to perform a [manual installation](#manual-install) and GPG verify the binaries.
-
-### Which versions get installed?
-
-GHCup has two main channels for every tool: **recommended** and **latest**. By default, it installs *recommended*.
-
-*latest* follows the latest release of every tool, while *recommended* is at the discretion of the GHCup maintainers and based on community adoption (hackage libraries, tools like HLS, stackage support, etc.) and known bugs.
-
-Also see [tags and shortcuts](../guide/#tags-and-shortcuts) for more information.
-
-## Next steps
-
-1. Follow the [First steps guide](../steps) on how to build a "Hello world" program, use `ghc`, run an interactive REPL and create a Haskell project
-2. To understand the difference and overlap of `stack` and `cabal`, read on [here](https://gist.github.com/merijn/8152d561fb8b011f9313c48d876ceb07)
-3. To learn Haskell proper check out the links at [How to learn Haskell proper](../steps#how-to-learn-haskell-proper)
-4. To learn more about Haskell Toolchain management, check out the [ghcup user guide](./guide.md)
-
-## Uninstallation
-
-On linux, just run `ghcup nuke`, then make sure any ghcup added lines in your `~/.bashrc` (or similar) are removed.
-
-On windows, right click on the `Uninstall Haskell.ps1` PowerShell script on your Desktop and select *Run with PowerShell*.
-
-## Supported tools
-
-GHCup supports the following tools, which are also known as the **Haskell Toolchain**:
-
-<details> <summary>Show all supported <a href='https://www.haskell.org/ghc/'>GHC</a> versions</summary>
-<table>
-<thead><tr><th>GHC Version</th><th>Tags</th></tr></thead>
-<tbody>
-<tr><td>9.2.2</td><td><span style="color:blue">latest</span>, base-4.16.1.0</td></tr>
-<tr><td>9.2.1</td><td>base-4.16.0.0</td></tr>
-<tr><td>9.0.2</td><td>base-4.15.1.0</td></tr>
-<tr><td>9.0.1</td><td>base-4.15.0.0</td></tr>
-<tr><td>8.10.7</td><td><span style="color:green">recommended</span>, base-4.14.3.0</td></tr>
-<tr><td>8.10.6</td><td>base-4.14.3.0</td></tr>
-<tr><td>8.10.5</td><td>base-4.14.2.0</td></tr>
-<tr><td>8.10.4</td><td>base-4.14.1.0</td></tr>
-<tr><td>8.10.3</td><td>base-4.14.1.0</td></tr>
-<tr><td>8.10.2</td><td>base-4.14.1.0</td></tr>
-<tr><td>8.10.1</td><td>base-4.14.0.0</td></tr>
-<tr><td>8.8.4</td><td>base-4.13.0.0</td></tr>
-<tr><td>8.8.3</td><td>base-4.13.0.0</td></tr>
-<tr><td>8.8.2</td><td>base-4.13.0.0</td></tr>
-<tr><td>8.8.1</td><td>base-4.13.0.0</td></tr>
-<tr><td>8.6.5</td><td>base-4.12.0.0</td></tr>
-<tr><td>8.6.4</td><td>base-4.12.0.0</td></tr>
-<tr><td>8.6.3</td><td>base-4.12.0.0</td></tr>
-<tr><td>8.6.2</td><td>base-4.12.0.0</td></tr>
-<tr><td>8.6.1</td><td>base-4.12.0.0</td></tr>
-<tr><td>8.4.4</td><td>base-4.11.1.0</td></tr>
-<tr><td>8.4.3</td><td>base-4.11.1.0</td></tr>
-<tr><td>8.4.2</td><td>base-4.11.1.0</td></tr>
-<tr><td>8.4.1</td><td>base-4.11.0.0</td></tr>
-<tr><td>8.2.2</td><td>base-4.10.1.0</td></tr>
-<tr><td>8.0.2</td><td>base-4.9.1.0</td></tr>
-<tr><td>7.10.3</td><td>base-4.8.2.0</td></tr>
-</tbody>
-</table>
-</details>
-
-<details> <summary>Show all supported <a href='https://cabal.readthedocs.io/en/stable/'>cabal-install</a> versions</summary>
-<table>
-<thead><tr><th>Cabal Version</th><th>Tags</th></tr></thead>
-<tbody>
-<tr><td>3.6.2.0</td><td><span style="color:blue">latest</span>, <span style="color:green">recommended</span></td></tr>
-<tr><td>3.6.0.0</td><td></td></tr>
-<tr><td>3.4.1.0</td><td></td></tr>
-<tr><td>3.4.0.0</td><td></td></tr>
-<tr><td>3.2.0.0</td><td></td></tr>
-<tr><td>3.0.0.0</td><td></td></tr>
-<tr><td>2.4.1.0</td><td></td></tr>
-</tbody>
-</table>
-</details>
-
-<details> <summary>Show all supported <a href='https://haskell-language-server.readthedocs.io/en/stable/'>HLS</a> versions</summary>
-<table>
-<thead><tr><th>HLS Version</th><th>Tags</th></tr></thead>
-<tbody>
-<tr><td>1.7.0.0</td><td><span style="color:blue">latest</span>, <span style="color:green">recommended</span></td></tr>
-<tr><td>1.6.1.0</td><td></td></tr>
-<tr><td>1.6.0.0</td><td></td></tr>
-<tr><td>1.5.1</td><td></td></tr>
-<tr><td>1.5.0</td><td></td></tr>
-<tr><td>1.4.0</td><td></td></tr>
-<tr><td>1.3.0</td><td></td></tr>
-<tr><td>1.2.0</td><td></td></tr>
-<tr><td>1.1.0</td><td></td></tr>
-</tbody>
-</table>
-</details>
-
-<details> <summary>Show all supported <a href='https://docs.haskellstack.org/en/stable/README/'>Stack</a> versions</summary>
-<table>
-<thead><tr><th>Stack Version</th><th>Tags</th></tr></thead>
-<tbody>
-<tr><td>2.7.5</td><td><span style="color:blue">latest</span>, <span style="color:green">recommended</span></td></tr>
-<tr><td>2.7.3</td><td></td></tr>
-<tr><td>2.7.1</td><td></td></tr>
-<tr><td>2.5.1</td><td></td></tr>
-</tbody>
-</table>
-</details>
-
-## Supported platforms
-
-This list may not be exhaustive and specifies support for bindists only.
-
-| Platform | Architecture | ghcup | GHC | cabal | HLS | stack | 
-| ------ | ------ | ------ | ------ | ------ | ------ | ------ |
-| Windows 7 | amd64 | ❔ | ✅ | ✅ | ✅ | ✅ |
-| Windows 10 | amd64 | ✅ | ✅ | ✅ | ✅ | ✅ |
-| Windows Server 2016 | amd64 | ✅ | ✅ | ✅ | ✅ | ✅ |
-| Windows Server 2019 | amd64 | ✅ | ✅ | ✅ | ✅ | ✅ |
-| Windows Server 2022 | amd64 | ✅ | ✅ | ✅ | ✅ | ✅ |
-| Windows WSL1 | amd64 | ❌ | ❔ | ❔ | ❔ | ❔ |
-| Windows WSL2 | amd64 | ✅ | ✅ | ✅ | ✅ | ✅ |
-| MacOS >=10.13 | amd64 | ✅ | ✅ | ✅ | ✅ | ✅ |
-| MacOS <10.13 | amd64 | ❌ | ❔ | ❔ | ❔ | ❔ |
-| MacOS | aarch64 | ✅ | ✅ | ✅ | ⚠️ | ❌ |
-| FreeBSD | amd64 | ✅ | ⚠️ | ✅ | ⚠️ | ❌ |
-| Linux generic | x86 | ✅ | ✅ | ✅ | ✅ | ✅ |
-| Linux generic | amd64 | ✅ | ✅ | ✅ | ✅ | ✅ |
-| Linux generic | aarch64 | ✅ | ⚠️ | ✅ | ⚠️ | ❌ |
-| Linux generic | armv7 | ✅ | ⚠️ | ✅ | ⚠️ | ❌ |
-
-### Windows 7
-
-May or may not work, several issues:
-
-* [https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/140](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/140)
-* [https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/197](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/197)
-
-### WSL1
-
-Unsupported. GHC may or may not work. Upgrade to WSL2.
-
-### MacOS <10.13
-
-Not supported. Would require separate binaries, since >=10.13 binaries are incompatible.
-Please upgrade.
-
-### MacOS aarch64
-
-HLS bindists are still experimental. Stack has only unofficial binaries for this platform.
-There are various issues with GHC itself.
-
-### FreeBSD
-
-Lacks some upstream bindists and may need compat libs, since most bindists are built on FreeBSD-12.
-HLS bindists are experimental.
-
-### Linux ARMv7/AARCH64
-
-Lower availability of bindists. Stack and HLS binaries are experimental.
-
-## Manual install
-
-Download the binary for your platform at [https://downloads.haskell.org/~ghcup/](https://downloads.haskell.org/~ghcup/)
-and place it into your `PATH` anywhere.
-
-If you want to GPG verify the binaries, import the following key first: `7784930957807690A66EBDBE3786C5262ECB4A3F`.
-
-Then adjust your `PATH` in `~/.bashrc` (or similar, depending on your shell) like so:
-
-```sh
-export PATH="$HOME/.cabal/bin:$HOME/.ghcup/bin:$PATH"
-```
-
-## Vim integration
-
-See [ghcup.vim](https://github.com/hasufell/ghcup.vim).
-
-## Get help
-
-* [Libera IRC chat on #haskell-ghcup or #haskell](https://kiwiirc.com/nextclient/irc.libera.chat/?nick=Guest%7C?#haskell,#haskell-ghcup)
-* [GHCup issue tracker](https://gitlab.haskell.org/haskell/ghcup-hs/issues)
-* [Matrix](https://app.element.io/#/room/#haskell-tooling:matrix.org)
-* [Discord](https://discord.gg/pKYf3zDQU7)
-
--- a/docs/irc.svg
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--- a/docs/javascripts/extra.js
+++ b/docs/javascripts/extra.js
@@ -1,119 +0,0 @@
-var platforms = ["win", "unix"];
-var platform_override = null;
-
-function detect_platform() {
-    "use strict";
-
-    if (platform_override !== null) {
-        return "unknown";
-    }
-
-    var os = "unknown";
-
-    if (navigator.platform == "Linux x86_64")         {os = "unix";}
-    if (navigator.platform == "Linux i686")           {os = "unix";}
-    if (navigator.platform == "Linux i686 on x86_64") {os = "unix";}
-    if (navigator.platform == "Linux aarch64")        {os = "unix";}
-    if (navigator.platform == "Linux armv6l")         {os = "unix";}
-    if (navigator.platform == "Linux armv7l")         {os = "unix";}
-    if (navigator.platform == "Linux armv8l")         {os = "unix";}
-    if (navigator.platform == "Linux ppc64")          {os = "unix";}
-    if (navigator.platform == "Linux mips")           {os = "unix";}
-    if (navigator.platform == "Linux mips64")         {os = "unix";}
-    if (navigator.platform == "Mac")                  {os = "unix";}
-    if (navigator.platform == "Win32")                {os = "win";}
-    if (navigator.platform == "Win64" ||
-        navigator.userAgent.indexOf("WOW64") != -1 ||
-        navigator.userAgent.indexOf("Win64") != -1)   {os = "win";}
-    if (navigator.platform == "FreeBSD x86_64")       {os = "unix";}
-    if (navigator.platform == "FreeBSD amd64")        {os = "unix";}
-    // if (navigator.platform == "NetBSD x86_64") {os = "unix";}
-    // if (navigator.platform == "NetBSD amd64") {os = "unix";}
-
-    // I wish I knew by now, but I don't. Try harder.
-    if (os == "unknown") {
-        if (navigator.appVersion.indexOf("Win")!=-1)     {os = "win";}
-        if (navigator.appVersion.indexOf("Mac")!=-1)     {os = "unix";}
-        if (navigator.appVersion.indexOf("FreeBSD")!=-1) {os = "unix";}
-    }
-
-    // Firefox Quantum likes to hide platform and appVersion but oscpu works
-    if (navigator.oscpu) {
-        if (navigator.oscpu.indexOf("Win32")!=-1)   {os = "win";}
-        if (navigator.oscpu.indexOf("Win64")!=-1)   {os = "win";}
-        if (navigator.oscpu.indexOf("Mac")!=-1)     {os = "unix";}
-        if (navigator.oscpu.indexOf("Linux")!=-1)   {os = "unix";}
-        if (navigator.oscpu.indexOf("FreeBSD")!=-1) {os = "unix";}
-        // if (navigator.oscpu.indexOf("NetBSD")!=-1) {os = "unix";}
-    }
-
-    return os;
-}
-
-function adjust_for_platform() {
-    "use strict";
-
-    var platform = detect_platform();
-
-	if (platforms.includes(platform)) {
-		platforms.forEach(function (platform_elem) {
-			var platform_div = document.getElementById("ghcup-instructions-" + platform_elem);
-			platform_div.style.display = "none";
-			if (platform == platform_elem) {
-				platform_div.style.display = "block";
-			}
-		});
-	}
-}
-
-
-function show_all_platforms() {
-	platforms.forEach(function (platform_elem) {
-		var platform_div = document.getElementById("ghcup-instructions-" + platform_elem);
-		platform_div.style.display = "block";
-	});
-	
-	var buttons = document.getElementsByClassName("show-all-platforms");
-	console.log(buttons);
-	Array.from(buttons).forEach(function (button) {
-		button.style.display = "none";
-	});
-
-}
-
-function set_up_default_platform_buttons() {
-    var defaults_buttons = document.getElementsByClassName('show-all-platforms-button');
-    for (var i = 0; i < defaults_buttons.length; i++) {
-        defaults_buttons[i].onclick = show_all_platforms;
-    }
-}
-
-function copyToClipboardNux() {
-  const text = document.getElementById("ghcup-command-linux").innerText;
-  const el = document.createElement('textarea');
-  el.value = text;
-  document.body.appendChild(el);
-  el.select();
-  document.execCommand('copy');
-  document.body.removeChild(el);
-  const button = document.getElementById("ghcup-linux-button");
-  button.focus();
-}
-
-function copyToClipboardWin() {
-  const text = document.getElementById("ghcup-command-windows").innerText;
-  const el = document.createElement('textarea');
-  el.value = text;
-  document.body.appendChild(el);
-  el.select();
-  document.execCommand('copy');
-  document.body.removeChild(el);
-  const button = document.getElementById("ghcup-windows-button");
-  button.focus();
-}
-
-(function () {
-    adjust_for_platform();
-    set_up_default_platform_buttons();
-}());
-
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-<title>u31</title>
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-<text text-anchor="middle" x="1303" y="-1095.29" font-family="Times-Roman" font-size="14.00">Upgrade</text>
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-<title>u21&#45;&gt;u31</title>
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-<title>u32</title>
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-<text text-anchor="middle" x="614" y="-1095.29" font-family="Times-Roman" font-size="14.00">ChangeLog</text>
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-<!-- u21&#45;&gt;u32 -->
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-<title>u21&#45;&gt;u32</title>
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-<title>u33</title>
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-<text text-anchor="middle" x="742" y="-1095.29" font-family="Times-Roman" font-size="14.00">Prefetch</text>
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-<!-- u21&#45;&gt;u33 -->
-<g id="edge26" class="edge">
-<title>u21&#45;&gt;u33</title>
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-<g id="node17" class="node">
-<title>u34</title>
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-<text text-anchor="middle" x="235" y="-1095.29" font-family="Times-Roman" font-size="14.00">GC</text>
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-<!-- u21&#45;&gt;u34 -->
-<g id="edge27" class="edge">
-<title>u21&#45;&gt;u34</title>
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-<!-- u35 -->
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-<title>u35</title>
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-<text text-anchor="middle" x="315" y="-1095.29" font-family="Times-Roman" font-size="14.00">DInfo</text>
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-<!-- u21&#45;&gt;u35 -->
-<g id="edge28" class="edge">
-<title>u21&#45;&gt;u35</title>
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-<title>u36</title>
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-<text text-anchor="middle" x="1461" y="-1095.29" font-family="Times-Roman" font-size="14.00">ToolRequirements</text>
-</g>
-<!-- u21&#45;&gt;u36 -->
-<g id="edge29" class="edge">
-<title>u21&#45;&gt;u36</title>
-<path fill="none" stroke="black" d="M788.7,-1207.83C892.07,-1191.92 1148.03,-1152.27 1362,-1116.99 1369.56,-1115.74 1377.44,-1114.42 1385.32,-1113.09"/>
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-<title>u37</title>
-<ellipse fill="#ffbbbb" stroke="black" stroke-width="0" cx="156" cy="-1098.99" rx="33.6" ry="18"/>
-<text text-anchor="middle" x="156" y="-1095.29" font-family="Times-Roman" font-size="14.00">Nuke</text>
-</g>
-<!-- u21&#45;&gt;u37 -->
-<g id="edge30" class="edge">
-<title>u21&#45;&gt;u37</title>
-<path fill="none" stroke="black" d="M693.33,-1209.49C597.41,-1197.93 377.73,-1167.91 199,-1116.99 196.41,-1116.25 193.76,-1115.42 191.12,-1114.52"/>
-<polygon fill="black" stroke="black" points="192.23,-1111.2 181.64,-1111.08 189.84,-1117.78 192.23,-1111.2"/>
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-<!-- u22 -->
-<g id="node5" class="node">
-<title>u22</title>
-<ellipse fill="#ffbbbb" stroke="black" stroke-width="0" cx="742" cy="-981.99" rx="51.19" ry="18"/>
-<text text-anchor="middle" x="742" y="-978.29" font-family="Times-Roman" font-size="14.00">Common</text>
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-<!-- u0 -->
-<g id="node33" class="node">
-<title>u0</title>
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-<text text-anchor="middle" x="705" y="-861.29" font-family="Times-Roman" font-size="14.00">GHCup</text>
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-<!-- u22&#45;&gt;u0 -->
-<g id="edge31" class="edge">
-<title>u22&#45;&gt;u0</title>
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-<polygon fill="black" stroke="black" points="716.88,-891.48 710.48,-883.03 710.21,-893.62 716.88,-891.48"/>
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-<!-- u23&#45;&gt;u22 -->
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-<title>u23&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M831.54,-1082C813.97,-1062.57 784.14,-1029.59 763.78,-1007.08"/>
-<polygon fill="black" stroke="black" points="766.31,-1004.66 757.01,-999.59 761.12,-1009.35 766.31,-1004.66"/>
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-<!-- u24&#45;&gt;u22 -->
-<g id="edge33" class="edge">
-<title>u24&#45;&gt;u22</title>
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-<polygon fill="black" stroke="black" points="776.84,-1000.31 766.49,-998.05 773.18,-1006.27 776.84,-1000.31"/>
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-<!-- u25&#45;&gt;u0 -->
-<g id="edge34" class="edge">
-<title>u25&#45;&gt;u0</title>
-<path fill="none" stroke="black" d="M1170.9,-1085.68C1088.88,-1047.01 836.24,-927.88 741.44,-883.17"/>
-<polygon fill="black" stroke="black" points="742.78,-879.94 732.24,-878.84 739.8,-886.27 742.78,-879.94"/>
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-<!-- u26&#45;&gt;u22 -->
-<g id="edge35" class="edge">
-<title>u26&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M979.72,-1087.83C974.89,-1085.55 969.78,-1083.17 965,-1080.99 901.54,-1052.07 827.31,-1019.75 782.51,-1000.4"/>
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-<!-- u27&#45;&gt;u22 -->
-<g id="edge36" class="edge">
-<title>u27&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M1058.38,-1086.65C994.71,-1065.79 859,-1021.32 787.79,-997.99"/>
-<polygon fill="black" stroke="black" points="788.78,-994.63 778.19,-994.85 786.6,-1001.29 788.78,-994.63"/>
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-<!-- u15 -->
-<g id="node28" class="node">
-<title>u15</title>
-<ellipse fill="#ffffbb" stroke="black" stroke-width="2" cx="705" cy="-571.99" rx="30.59" ry="18"/>
-<text text-anchor="middle" x="705" y="-568.29" font-family="Times-Roman" font-size="14.00">Utils</text>
-</g>
-<!-- u28&#45;&gt;u15 -->
-<g id="edge37" class="edge">
-<title>u28&#45;&gt;u15</title>
-<path fill="none" stroke="black" d="M67.99,-1080.83C82.87,-1020.89 141.11,-819.44 271,-725.99 416.7,-621.17 526.05,-761.83 668,-651.99 684.52,-639.21 693.98,-617.26 699.19,-599.74"/>
-<polygon fill="black" stroke="black" points="702.58,-600.61 701.79,-590.04 695.82,-598.8 702.58,-600.61"/>
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-<!-- u29&#45;&gt;u22 -->
-<g id="edge38" class="edge">
-<title>u29&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M448.46,-1086.22C507.6,-1065.42 630.64,-1022.15 697.09,-998.78"/>
-<polygon fill="black" stroke="black" points="698.59,-1001.97 706.86,-995.35 696.27,-995.36 698.59,-1001.97"/>
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-<!-- u30&#45;&gt;u22 -->
-<g id="edge39" class="edge">
-<title>u30&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M528.27,-1087.58C568.07,-1068.1 654.29,-1025.91 704.21,-1001.48"/>
-<polygon fill="black" stroke="black" points="705.94,-1004.53 713.38,-996.99 702.86,-998.25 705.94,-1004.53"/>
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-<!-- u31&#45;&gt;u0 -->
-<g id="edge40" class="edge">
-<title>u31&#45;&gt;u0</title>
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-<!-- u32&#45;&gt;u22 -->
-<g id="edge41" class="edge">
-<title>u32&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M632.07,-1081.76C654.08,-1061.98 691.42,-1028.44 716.39,-1006"/>
-<polygon fill="black" stroke="black" points="718.92,-1008.43 724.02,-999.14 714.25,-1003.22 718.92,-1008.43"/>
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-<!-- u33&#45;&gt;u22 -->
-<g id="edge42" class="edge">
-<title>u33&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M742,-1080.52C742,-1061.93 742,-1032.23 742,-1010.49"/>
-<polygon fill="black" stroke="black" points="745.5,-1010.24 742,-1000.24 738.5,-1010.24 745.5,-1010.24"/>
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-<!-- u34&#45;&gt;u0 -->
-<g id="edge43" class="edge">
-<title>u34&#45;&gt;u0</title>
-<path fill="none" stroke="black" d="M253.73,-1086.02C294.34,-1060.34 393.93,-998.82 482,-955.99 543.91,-925.88 618.59,-897.22 663.9,-880.63"/>
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-<!-- u35&#45;&gt;u0 -->
-<g id="edge44" class="edge">
-<title>u35&#45;&gt;u0</title>
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-<polygon fill="black" stroke="black" points="674.39,-888.27 681.2,-880.15 670.81,-882.25 674.39,-888.27"/>
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-<!-- u14 -->
-<g id="node36" class="node">
-<title>u14</title>
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-<text text-anchor="middle" x="934" y="-740.29" font-family="Times-Roman" font-size="14.00">Platform</text>
-</g>
-<!-- u36&#45;&gt;u14 -->
-<g id="edge45" class="edge">
-<title>u36&#45;&gt;u14</title>
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-<polygon fill="black" stroke="black" points="966.82,-762.76 956.56,-760.1 962.93,-768.58 966.82,-762.76"/>
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-<!-- u18 -->
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-<title>u18</title>
-<ellipse fill="#ffffbb" stroke="black" stroke-width="0" cx="1461" cy="-743.99" rx="73.39" ry="18"/>
-<text text-anchor="middle" x="1461" y="-740.29" font-family="Times-Roman" font-size="14.00">Requirements</text>
-</g>
-<!-- u36&#45;&gt;u18 -->
-<g id="edge46" class="edge">
-<title>u36&#45;&gt;u18</title>
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-<polygon fill="black" stroke="black" points="1464.5,-772.26 1461,-762.26 1457.5,-772.26 1464.5,-772.26"/>
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-<!-- u37&#45;&gt;u0 -->
-<g id="edge47" class="edge">
-<title>u37&#45;&gt;u0</title>
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-<title>u3</title>
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-<text text-anchor="middle" x="1257" y="-316.29" font-family="Times-Roman" font-size="14.00">Types</text>
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-<!-- u4 -->
-<g id="node22" class="node">
-<title>u4</title>
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-<text text-anchor="middle" x="1329" y="-433.29" font-family="Times-Roman" font-size="14.00">Optics</text>
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-<!-- u4&#45;&gt;u3 -->
-<g id="edge48" class="edge">
-<title>u4&#45;&gt;u3</title>
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-<!-- u6 -->
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-<title>u6</title>
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-<text text-anchor="middle" x="934" y="-568.29" font-family="Times-Roman" font-size="14.00">MegaParsec</text>
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-<!-- u5&#45;&gt;u6 -->
-<g id="edge49" class="edge">
-<title>u5&#45;&gt;u6</title>
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-<title>u7</title>
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-<text text-anchor="middle" x="1030" y="-316.29" font-family="Times-Roman" font-size="14.00">Prelude</text>
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-<!-- u5&#45;&gt;u7 -->
-<g id="edge50" class="edge">
-<title>u5&#45;&gt;u7</title>
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-<title>u9</title>
-<ellipse fill="#77ff77" stroke="black" stroke-width="0" cx="803" cy="-436.99" rx="51.19" ry="18"/>
-<text text-anchor="middle" x="803" y="-433.29" font-family="Times-Roman" font-size="14.00">Common</text>
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-<!-- u12&#45;&gt;u9 -->
-<g id="edge59" class="edge">
-<title>u12&#45;&gt;u9</title>
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-<!-- u9&#45;&gt;u7 -->
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-<title>u9&#45;&gt;u7</title>
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-<!-- u10 -->
-<g id="node26" class="node">
-<title>u10</title>
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-<text text-anchor="middle" x="1030" y="-77.29" font-family="Times-Roman" font-size="14.00">QQ</text>
-</g>
-<!-- u16 -->
-<g id="node27" class="node">
-<title>u16</title>
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-<text text-anchor="middle" x="629" y="-568.29" font-family="Times-Roman" font-size="14.00">QQ</text>
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-<!-- u15&#45;&gt;u1 -->
-<g id="edge51" class="edge">
-<title>u15&#45;&gt;u1</title>
-<path fill="none" stroke="black" d="M707.81,-589.96C711.74,-608.15 720.7,-636.49 740,-651.99 869.4,-755.91 944.8,-686.54 1106,-725.99 1109.21,-726.78 1112.51,-727.62 1115.82,-728.5"/>
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-<!-- u6&#45;&gt;u3 -->
-<g id="edge52" class="edge">
-<title>u6&#45;&gt;u3</title>
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-<!-- u8 -->
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-<title>u8</title>
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-<text text-anchor="middle" x="1030" y="-199.29" font-family="Times-Roman" font-size="14.00">Logger</text>
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-<!-- u7&#45;&gt;u8 -->
-<g id="edge54" class="edge">
-<title>u7&#45;&gt;u8</title>
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-<!-- u2 -->
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-<title>u2</title>
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-<text text-anchor="middle" x="1128" y="-433.29" font-family="Times-Roman" font-size="14.00">Errors</text>
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-<!-- u7&#45;&gt;u2 -->
-<g id="edge53" class="edge">
-<title>u7&#45;&gt;u2</title>
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-<!-- u8&#45;&gt;u4 -->
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-<title>u21&#45;&gt;u31</title>
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-<title>u32</title>
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-<g id="edge25" class="edge">
-<title>u21&#45;&gt;u32</title>
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-<polygon fill="black" stroke="black" points="650.63,-751.34 640.24,-749.24 647.05,-757.36 650.63,-751.34"/>
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-<title>u33</title>
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-<text text-anchor="middle" x="742" y="-728.96" font-family="Times-Roman" font-size="14.00">Prefetch</text>
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-<!-- u21&#45;&gt;u33 -->
-<g id="edge26" class="edge">
-<title>u21&#45;&gt;u33</title>
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-<polygon fill="black" stroke="black" points="745.5,-760.84 742,-750.84 738.5,-760.84 745.5,-760.84"/>
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-<!-- u34 -->
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-<title>u34</title>
-<ellipse fill="#ffbbbb" stroke="black" stroke-width="0" cx="235" cy="-732.66" rx="27" ry="18"/>
-<text text-anchor="middle" x="235" y="-728.96" font-family="Times-Roman" font-size="14.00">GC</text>
-</g>
-<!-- u21&#45;&gt;u34 -->
-<g id="edge27" class="edge">
-<title>u21&#45;&gt;u34</title>
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-<g id="node18" class="node">
-<title>u35</title>
-<ellipse fill="#ffbbbb" stroke="black" stroke-width="0" cx="315" cy="-732.66" rx="35.19" ry="18"/>
-<text text-anchor="middle" x="315" y="-728.96" font-family="Times-Roman" font-size="14.00">DInfo</text>
-</g>
-<!-- u21&#45;&gt;u35 -->
-<g id="edge28" class="edge">
-<title>u21&#45;&gt;u35</title>
-<path fill="none" stroke="black" d="M692.02,-805.43C618.22,-798.41 476.17,-781.93 359,-750.66 356.35,-749.95 353.63,-749.14 350.92,-748.26"/>
-<polygon fill="black" stroke="black" points="351.81,-744.86 341.22,-744.85 349.49,-751.47 351.81,-744.86"/>
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-<!-- u36 -->
-<g id="node19" class="node">
-<title>u36</title>
-<ellipse fill="#ffbbbb" stroke="black" stroke-width="0" cx="1461" cy="-732.66" rx="90.18" ry="18"/>
-<text text-anchor="middle" x="1461" y="-728.96" font-family="Times-Roman" font-size="14.00">ToolRequirements</text>
-</g>
-<!-- u21&#45;&gt;u36 -->
-<g id="edge29" class="edge">
-<title>u21&#45;&gt;u36</title>
-<path fill="none" stroke="black" d="M792.37,-806.16C898.17,-798.52 1151.13,-778.76 1362,-750.66 1370.05,-749.59 1378.45,-748.34 1386.8,-747.02"/>
-<polygon fill="black" stroke="black" points="1387.62,-750.44 1396.94,-745.38 1386.51,-743.53 1387.62,-750.44"/>
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-<!-- u37 -->
-<g id="node20" class="node">
-<title>u37</title>
-<ellipse fill="#ffbbbb" stroke="black" stroke-width="0" cx="156" cy="-732.66" rx="33.6" ry="18"/>
-<text text-anchor="middle" x="156" y="-728.96" font-family="Times-Roman" font-size="14.00">Nuke</text>
-</g>
-<!-- u21&#45;&gt;u37 -->
-<g id="edge30" class="edge">
-<title>u21&#45;&gt;u37</title>
-<path fill="none" stroke="black" d="M690.3,-808.63C592.81,-805.69 375.74,-794.35 199,-750.66 196.22,-749.97 193.39,-749.15 190.56,-748.24"/>
-<polygon fill="black" stroke="black" points="191.69,-744.93 181.1,-744.88 189.35,-751.52 191.69,-744.93"/>
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-<!-- u22 -->
-<g id="node5" class="node">
-<title>u22</title>
-<ellipse fill="#ffbbbb" stroke="black" stroke-width="0" cx="742" cy="-654.66" rx="51.19" ry="18"/>
-<text text-anchor="middle" x="742" y="-650.96" font-family="Times-Roman" font-size="14.00">Common</text>
-</g>
-<!-- u0 -->
-<g id="node33" class="node">
-<title>u0</title>
-<ellipse fill="#bbffbb" stroke="black" stroke-width="2" cx="705" cy="-576.66" rx="42.49" ry="18"/>
-<text text-anchor="middle" x="705" y="-572.96" font-family="Times-Roman" font-size="14.00">GHCup</text>
-</g>
-<!-- u22&#45;&gt;u0 -->
-<g id="edge31" class="edge">
-<title>u22&#45;&gt;u0</title>
-<path fill="none" stroke="black" d="M733.79,-636.79C729.05,-627.05 722.98,-614.59 717.64,-603.63"/>
-<polygon fill="black" stroke="black" points="720.71,-601.94 713.19,-594.48 714.42,-605 720.71,-601.94"/>
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-<!-- u23&#45;&gt;u22 -->
-<g id="edge32" class="edge">
-<title>u23&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M825.95,-717.01C810.53,-705.74 788.99,-690 771.59,-677.28"/>
-<polygon fill="black" stroke="black" points="773.56,-674.39 763.42,-671.31 769.43,-680.04 773.56,-674.39"/>
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-<!-- u24&#45;&gt;u22 -->
-<g id="edge33" class="edge">
-<title>u24&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M907.79,-721.35C902.96,-719.08 897.82,-716.74 893,-714.66 857.2,-699.23 815.93,-683.23 785.6,-671.79"/>
-<polygon fill="black" stroke="black" points="786.75,-668.48 776.15,-668.24 784.29,-675.03 786.75,-668.48"/>
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-<!-- u25&#45;&gt;u0 -->
-<g id="edge34" class="edge">
-<title>u25&#45;&gt;u0</title>
-<path fill="none" stroke="black" d="M1167.62,-721.04C1161.48,-718.88 1155.04,-716.66 1149,-714.66 1003.04,-666.32 828.31,-614.02 748.55,-590.45"/>
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-<!-- u26&#45;&gt;u22 -->
-<g id="edge35" class="edge">
-<title>u26&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M979.97,-720.89C975.13,-718.64 969.95,-716.43 965,-714.66 892.52,-688.77 871.13,-693.36 797,-672.66 794.25,-671.89 791.42,-671.08 788.58,-670.25"/>
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-<!-- u27&#45;&gt;u22 -->
-<g id="edge36" class="edge">
-<title>u27&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M1058.23,-720.39C1051.24,-718.33 1043.92,-716.31 1037,-714.66 931.66,-689.55 902.27,-698.03 797,-672.66 794.04,-671.95 791,-671.16 787.94,-670.33"/>
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-<!-- u15 -->
-<g id="node28" class="node">
-<title>u15</title>
-<ellipse fill="#ffffbb" stroke="black" stroke-width="2" cx="705" cy="-380.66" rx="30.59" ry="18"/>
-<text text-anchor="middle" x="705" y="-376.96" font-family="Times-Roman" font-size="14.00">Utils</text>
-</g>
-<!-- u28&#45;&gt;u15 -->
-<g id="edge37" class="edge">
-<title>u28&#45;&gt;u15</title>
-<path fill="none" stroke="black" d="M71.46,-714.85C93.67,-667.18 164.47,-531.09 271,-477.66 310.47,-457.87 631.26,-485.14 668,-460.66 685.49,-449.01 694.89,-426.77 699.83,-408.86"/>
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-<!-- u29&#45;&gt;u22 -->
-<g id="edge38" class="edge">
-<title>u29&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M449.8,-720.49C456.78,-718.42 464.1,-716.37 471,-714.66 565.92,-691.09 592.14,-696.47 687,-672.66 689.96,-671.92 692.99,-671.11 696.04,-670.26"/>
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-<!-- u30&#45;&gt;u22 -->
-<g id="edge39" class="edge">
-<title>u30&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M528.08,-721.03C532.92,-718.78 538.09,-716.52 543,-714.66 605.33,-691.02 623.15,-691.84 687,-672.66 689.74,-671.84 692.55,-670.99 695.38,-670.12"/>
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-<!-- u31&#45;&gt;u0 -->
-<g id="edge40" class="edge">
-<title>u31&#45;&gt;u0</title>
-<path fill="none" stroke="black" d="M1267.21,-719.95C1204.45,-699.67 1070.24,-657.41 955,-628.66 885.44,-611.3 803.91,-595.51 753.35,-586.24"/>
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-<!-- u32&#45;&gt;u22 -->
-<g id="edge41" class="edge">
-<title>u32&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M639.9,-716.28C659.59,-704.59 686.84,-688.41 708.23,-675.71"/>
-<polygon fill="black" stroke="black" points="710.2,-678.61 717.01,-670.5 706.62,-672.6 710.2,-678.61"/>
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-<!-- u33&#45;&gt;u22 -->
-<g id="edge42" class="edge">
-<title>u33&#45;&gt;u22</title>
-<path fill="none" stroke="black" d="M742,-714.41C742,-705.18 742,-693.59 742,-683.15"/>
-<polygon fill="black" stroke="black" points="745.5,-682.84 742,-672.84 738.5,-682.84 745.5,-682.84"/>
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-<!-- u34&#45;&gt;u0 -->
-<g id="edge43" class="edge">
-<title>u34&#45;&gt;u0</title>
-<path fill="none" stroke="black" d="M256.18,-721.27C261.01,-719.01 266.15,-716.68 271,-714.66 321.21,-693.69 336.18,-694.54 386,-672.66 424.95,-655.55 430.98,-643.09 471,-628.66 532.58,-606.45 606.93,-592.27 655.04,-584.64"/>
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-<!-- u35&#45;&gt;u0 -->
-<g id="edge44" class="edge">
-<title>u35&#45;&gt;u0</title>
-<path fill="none" stroke="black" d="M342.11,-720.95C409.78,-694.23 586.34,-624.51 665.55,-593.24"/>
-<polygon fill="black" stroke="black" points="667.14,-596.37 675.16,-589.44 664.57,-589.86 667.14,-596.37"/>
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-<!-- u14 -->
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-<title>u14</title>
-<ellipse fill="#ffffbb" stroke="black" stroke-width="0" cx="934" cy="-495.66" rx="48.19" ry="18"/>
-<text text-anchor="middle" x="934" y="-491.96" font-family="Times-Roman" font-size="14.00">Platform</text>
-</g>
-<!-- u36&#45;&gt;u14 -->
-<g id="edge45" class="edge">
-<title>u36&#45;&gt;u14</title>
-<path fill="none" stroke="black" d="M1426.01,-716.06C1331.57,-673.94 1071.92,-558.16 972.98,-514.04"/>
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-<!-- u18 -->
-<g id="node37" class="node">
-<title>u18</title>
-<ellipse fill="#ffffbb" stroke="black" stroke-width="0" cx="1461" cy="-495.66" rx="73.39" ry="18"/>
-<text text-anchor="middle" x="1461" y="-491.96" font-family="Times-Roman" font-size="14.00">Requirements</text>
-</g>
-<!-- u36&#45;&gt;u18 -->
-<g id="edge46" class="edge">
-<title>u36&#45;&gt;u18</title>
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-<polygon fill="black" stroke="black" points="1464.5,-523.97 1461,-513.97 1457.5,-523.97 1464.5,-523.97"/>
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-<!-- u37&#45;&gt;u0 -->
-<g id="edge47" class="edge">
-<title>u37&#45;&gt;u0</title>
-<path fill="none" stroke="black" d="M178.73,-719.04C219.16,-697.17 306.76,-652.29 386,-628.66 478.02,-601.22 589.65,-587.67 653.49,-581.71"/>
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-<title>u3</title>
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-<text text-anchor="middle" x="1257" y="-209.96" font-family="Times-Roman" font-size="14.00">Types</text>
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-<!-- u4 -->
-<g id="node22" class="node">
-<title>u4</title>
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-<text text-anchor="middle" x="1329" y="-287.96" font-family="Times-Roman" font-size="14.00">Optics</text>
-</g>
-<!-- u4&#45;&gt;u3 -->
-<g id="edge48" class="edge">
-<title>u4&#45;&gt;u3</title>
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-<title>u6</title>
-<ellipse fill="#ffbbff" stroke="black" stroke-width="0" cx="934" cy="-380.66" rx="64.19" ry="18"/>
-<text text-anchor="middle" x="934" y="-376.96" font-family="Times-Roman" font-size="14.00">MegaParsec</text>
-</g>
-<!-- u5&#45;&gt;u6 -->
-<g id="edge49" class="edge">
-<title>u5&#45;&gt;u6</title>
-<path fill="none" stroke="black" d="M1226.6,-309.05C1217.94,-320.06 1204.99,-333.77 1190,-340.66 1152.94,-357.69 1046.95,-346.43 1007,-354.66 997.85,-356.55 988.26,-359.26 979.16,-362.21"/>
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-<!-- u7 -->
-<g id="node30" class="node">
-<title>u7</title>
-<ellipse fill="#ffbbff" stroke="black" stroke-width="0" cx="1030" cy="-213.66" rx="44.39" ry="18"/>
-<text text-anchor="middle" x="1030" y="-209.96" font-family="Times-Roman" font-size="14.00">Prelude</text>
-</g>
-<!-- u5&#45;&gt;u7 -->
-<g id="edge50" class="edge">
-<title>u5&#45;&gt;u7</title>
-<path fill="none" stroke="black" d="M1218.91,-276.55C1213.05,-272.65 1206.44,-268.67 1200,-265.66 1160.61,-247.27 1113.01,-233.67 1078.21,-225.15"/>
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-<!-- u9 -->
-<g id="node25" class="node">
-<title>u9</title>
-<ellipse fill="#77ff77" stroke="black" stroke-width="0" cx="803" cy="-291.66" rx="51.19" ry="18"/>
-<text text-anchor="middle" x="803" y="-287.96" font-family="Times-Roman" font-size="14.00">Common</text>
-</g>
-<!-- u12&#45;&gt;u9 -->
-<g id="edge59" class="edge">
-<title>u12&#45;&gt;u9</title>
-<path fill="none" stroke="black" d="M820.65,-362.47C817.58,-350.32 813.4,-333.77 809.87,-319.84"/>
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-<!-- u9&#45;&gt;u7 -->
-<g id="edge60" class="edge">
-<title>u9&#45;&gt;u7</title>
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-<!-- u10 -->
-<g id="node26" class="node">
-<title>u10</title>
-<ellipse fill="#ffff77" stroke="black" stroke-width="0" cx="1030" cy="-53.66" rx="27" ry="18"/>
-<text text-anchor="middle" x="1030" y="-49.96" font-family="Times-Roman" font-size="14.00">QQ</text>
-</g>
-<!-- u16 -->
-<g id="node27" class="node">
-<title>u16</title>
-<ellipse fill="#7777ff" stroke="black" stroke-width="0" cx="629" cy="-380.66" rx="27" ry="18"/>
-<text text-anchor="middle" x="629" y="-376.96" font-family="Times-Roman" font-size="14.00">QQ</text>
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-<!-- u15&#45;&gt;u1 -->
-<g id="edge51" class="edge">
-<title>u15&#45;&gt;u1</title>
-<path fill="none" stroke="black" d="M707.32,-398.87C710.83,-417.56 719.45,-446.6 740,-460.66 773.6,-483.65 1065.83,-471.03 1106,-477.66 1109.69,-478.27 1113.47,-479.03 1117.26,-479.89"/>
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-<!-- u6&#45;&gt;u3 -->
-<g id="edge52" class="edge">
-<title>u6&#45;&gt;u3</title>
-<path fill="none" stroke="black" d="M969.52,-365.51C981.28,-361.37 994.54,-357.25 1007,-354.66 1044.76,-346.8 1151.18,-366.3 1180,-340.66 1205.4,-318.06 1177.53,-294.82 1195,-265.66 1202.54,-253.08 1214.35,-242.23 1225.65,-233.81"/>
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-<!-- u8 -->
-<g id="node31" class="node">
-<title>u8</title>
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-<text text-anchor="middle" x="1030" y="-131.96" font-family="Times-Roman" font-size="14.00">Logger</text>
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-<!-- u7&#45;&gt;u8 -->
-<g id="edge54" class="edge">
-<title>u7&#45;&gt;u8</title>
-<path fill="none" stroke="black" stroke-dasharray="5,2" d="M1030,-195.41C1030,-186.18 1030,-174.59 1030,-164.15"/>
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-<!-- u2 -->
-<g id="node34" class="node">
-<title>u2</title>
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-<text text-anchor="middle" x="1128" y="-287.96" font-family="Times-Roman" font-size="14.00">Errors</text>
-</g>
-<!-- u7&#45;&gt;u2 -->
-<g id="edge53" class="edge">
-<title>u7&#45;&gt;u2</title>
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-<!-- u8&#45;&gt;u4 -->
-<g id="edge55" class="edge">
-<title>u8&#45;&gt;u4</title>
-<path fill="none" stroke="black" d="M1071.74,-139.12C1139.49,-143.98 1269.17,-157.08 1302,-187.66 1322.76,-207 1328.33,-240.18 1329.47,-263.64"/>
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-<!DOCTYPE html>
-<html lang="{{ config.theme.locale|default('en') }}">
-    <head>
-      {%- block site_meta %}
-        <meta charset="utf-8">
-        <meta http-equiv="X-UA-Compatible" content="IE=edge">
-        <meta name="viewport" content="width=device-width, initial-scale=1.0">
-        {% if page and page.is_homepage %}<meta name="description" content="{{ config['site_description'] }}">{% endif %}
-        {% if config.site_author %}<meta name="author" content="{{ config.site_author }}">{% endif %}
-        {% if page and page.canonical_url %}<link rel="canonical" href="{{ page.canonical_url }}">{% endif %}
-        {% if config.site_favicon %}<link rel="shortcut icon" href="{{ config.site_favicon|url }}">
-        {% else %}<link rel="shortcut icon" href="{{ 'img/favicon.ico'|url }}">{% endif %}
-      {%- endblock %}
-
-      {%- block htmltitle %}
-        <title>{% if page and page.title and not page.is_homepage %}{{ page.title }} - {% endif %}{{ config.site_name }}</title>
-      {%- endblock %}
-
-      {%- block styles %}
-        <link href="{{ 'css/bootstrap.min.css'|url }}" rel="stylesheet">
-        <link href="{{ 'css/font-awesome.min.css'|url }}" rel="stylesheet">
-        <link href="{{ 'css/base.css'|url }}" rel="stylesheet">
-        {%- if config.theme.highlightjs %}
-        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.5.0/styles/{{ config.theme.hljs_style }}.min.css">
-        {%- endif %}
-        {%- for path in extra_css %}
-        <link href="{{ path }}" rel="stylesheet">
-        {%- endfor %}
-      {%- endblock %}
-
-      {%- block libs %}
-
-        <script src="{{ 'js/jquery-1.10.2.min.js'|url }}" defer></script>
-        <script src="{{ 'js/bootstrap.min.js'|url }}" defer></script>
-        {%- if config.theme.highlightjs %}
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.5.0/highlight.min.js"></script>
-        {%- for lang in config.theme.hljs_languages %}
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.5.0/languages/{{lang}}.min.js"></script>
-        {%- endfor %}
-        <script>hljs.initHighlightingOnLoad();</script>
-        {%- endif %}
-      {%- endblock %}
-
-      {%- block analytics %}
-        {%- if config.theme.analytics.gtag %}
-        <script async src="https://www.googletagmanager.com/gtag/js?id={{ config.theme.analytics.gtag }}"></script>
-        <script>
-          window.dataLayer = window.dataLayer || [];
-          function gtag(){dataLayer.push(arguments);}
-          gtag('js', new Date());
-
-          gtag('config', '{{ config.theme.analytics.gtag }}');
-        </script>
-        {%- elif config.google_analytics %}
-        <script>
-            (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
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-
-            ga('create', '{{ config.google_analytics[0] }}', '{{ config.google_analytics[1] }}');
-            ga('send', 'pageview');
-        </script>
-        {%- endif %}
-      {%- endblock %}
-
-      {%- block extrahead %} {% endblock %}
-    </head>
-
-    <body{% if page and page.is_homepage %} class="homepage"{% endif %}>
-        <div class="navbar fixed-top navbar-expand-lg navbar-{% if config.theme.nav_style == "light" %}light{% else %}dark{% endif %} bg-{{ config.theme.nav_style }}">
-            <div class="container">
-
-                {%- block site_name %}
-                <a class="navbar-brand" href="{{ nav.homepage.url|url }}">{{ config.site_name }}</a>
-                {%- endblock %}
-
-                {%- if nav|length>1 or (page and (page.next_page or page.previous_page)) or config.repo_url %}
-                <!-- Expander button -->
-                <button type="button" class="navbar-toggler" data-toggle="collapse" data-target="#navbar-collapse">
-                    <span class="navbar-toggler-icon"></span>
-                </button>
-                {%- endif %}
-
-                <!-- Expanded navigation -->
-                <div id="navbar-collapse" class="navbar-collapse collapse">
-                  {%- block site_nav %}
-                    {%- if nav|length>1 %}
-                        <!-- Main navigation -->
-                        <ul class="nav navbar-nav">
-                        {%- for nav_item in nav %}
-                        {%- if nav_item.children %}
-                            <li class="dropdown{% if nav_item.active %} active{% endif %}">
-                                <a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown">{{ nav_item.title }} <b class="caret"></b></a>
-                                <ul class="dropdown-menu">
-                                {%- for nav_item in nav_item.children %}
-                                    {% include "nav-sub.html" %}
-                                {%- endfor %}
-                                </ul>
-                            </li>
-                        {%- else %}
-                            <li class="navitem{% if nav_item.active %} active{% endif %}">
-                                <a href="{{ nav_item.url|url }}" class="nav-link">{{ nav_item.title }}</a>
-                            </li>
-                        {%- endif %}
-                        {%- endfor %}
-                        </ul>
-                    {%- endif %}
-                  {%- endblock %}
-
-                    <ul class="nav navbar-nav ml-auto">
-                      {%- block search_button %}
-                        {%- if 'search' in config['plugins'] %}
-                        <li class="nav-item">
-                            <a href="#" class="nav-link" data-toggle="modal" data-target="#mkdocs_search_modal">
-                                <i class="fa fa-search"></i> {% trans %}Search{% endtrans %}
-                            </a>
-                        </li>
-                        {%- endif %}
-                      {%- endblock %}
-
-                      {%- block next_prev %}
-                      {%- endblock %}
-
-                      {%- block repo %}
-                        {%- if page and page.edit_url %}
-                            <li class="nav-item">
-                                <a href="{{ page.edit_url }}" class="nav-link">
-                                    {%- if config.repo_name == 'GitHub' -%}
-                                        <i class="fa fa-github"></i> {% trans repo_name=config.repo_name %}Edit on {{ repo_name }}{% endtrans %}
-                                    {%- elif config.repo_name == 'Bitbucket' -%}
-                                        <i class="fa fa-bitbucket"></i> {% trans repo_name=config.repo_name %}Edit on {{ repo_name }}{% endtrans %}
-                                    {%- elif config.repo_name == 'GitLab' -%}
-                                        <i class="fa fa-gitlab"></i> {% trans repo_name=config.repo_name %}Edit on {{ repo_name }}{% endtrans %}
-                                    {%- else -%}
-                                    {% trans repo_name=config.repo_name%}Edit on {{ repo_name }}{% endtrans %}
-                                    {%- endif -%}
-                                </a>
-                            </li>
-                        {%- elif config.repo_url %}
-                            <li class="nav-item">
-                                <a href="{{ config.repo_url }}" class="nav-link">
-                                    {%- if config.repo_name == 'GitHub' -%}
-                                        <i class="fa fa-github"></i> {{ config.repo_name }}
-                                    {%- elif config.repo_name == 'Bitbucket' -%}
-                                        <i class="fa fa-bitbucket"></i> {{ config.repo_name }}
-                                    {%- elif config.repo_name == 'GitLab' -%}
-                                        <i class="fa fa-gitlab"></i> {{ config.repo_name }}
-                                    {%- else -%}
-                                    {{ config.repo_name }}
-                                    {%- endif -%}
-                                </a>
-                            </li>
-                        {%- endif %}
-                      {%- endblock %}
-                    </ul>
-                </div>
-            </div>
-        </div>
-
-        <div class="container">
-            <div class="row">
-                {%- block content %}
-                    <div class="col-md-3">{% include "toc.html" %}</div>
-                    <div class="col-md-9" role="main">{% include "content.html" %}</div>
-                {%- endblock %}
-            </div>
-        </div>
-
-        <footer class="col-md-12">
-          {%- block footer %}
-            <hr>
-            {%- if config.copyright %}
-                <p>{{ config.copyright }}</p>
-            {%- endif %}
-            <p>{% trans mkdocs_link='<a href="https://www.mkdocs.org/">MkDocs</a>' %}Documentation built with {{ mkdocs_link }}.{% endtrans %}</p>
-          {%- endblock %}
-        </footer>
-
-      {%- block scripts %}
-        <script>
-            var base_url = {{ base_url | tojson }},
-                shortcuts = {{ config.theme.shortcuts | tojson }};
-        </script>
-        <script src="{{ 'js/base.js'|url }}" defer></script>
-        {%- for path in extra_javascript %}
-        <script src="{{ path }}" defer></script>
-        {%- endfor %}
-      {%- endblock %}
-
-        {% if 'search' in config['plugins'] %}{%- include "search-modal.html" %}{% endif %}
-        {%- include "keyboard-modal.html" %}
-
-    </body>
-</html>
-{% if page and page.is_homepage %}
-<!--
-MkDocs version : {{ mkdocs_version }}
-Build Date UTC : {{ build_date_utc }}
-->
-{% endif %}
--- a/docs/steps.md
+++ b/docs/steps.md
@@ -1,349 +0,0 @@
-# First steps
-
-In this guide we'll take a look at a few core tools that are installed
-with the Haskell toolchain, namely, `ghc`, `runghc` and `ghci`.
-These tools can be used to compile, interpret or explore Haskell programs.
-
-First, let's start by opening your system's command line interface
-and running `ghc --version` to make sure we have successfully
-installed a Haskell toolchain:
-
-```
-➜ ghc --version
-The Glorious Glasgow Haskell Compilation System, version 8.10.7
-```
-
-If this fails, consult [the Getting started page](../install) for information on
-how to install Haskell on your computer.
-
-This guide is partly based on [Gil Mizrahi's blog](https://gilmi.me/blog/post/2021/08/14/hs-core-tools).
-
-## Compiling programs with ghc
-
-Running `ghc` invokes the Glasgow Haskell Compiler (GHC), and can be used to
-compile Haskell modules and programs into native executables and libraries.
-
-Create a new Haskell source file named `hello.hs`,
-and write the following code in it:
-
-```hs
-main = putStrLn "Hello, Haskell!"
-```
-
-Now, we can compile the program by invoking `ghc` with the file name:
-
-```sh
-➜ ghc hello.hs
-[1 of 1] Compiling Main             ( hello.hs, hello.o )
-Linking hello ...
-```
-
-For more in-depth information about the files `ghc` produces,
-follow the [GHC user guide](https://downloads.haskell.org/ghc/latest/docs/html/users_guide/using.html#getting-started-compiling-programs) guide.
-
-Now we run our program:
-
-```sh
-➜ ./hello 
-Hello, Haskell!
-```
-
-Alternatively, we can skip the compilation phase by using the command `runghc`:
-
-```sh
-➜ runghc hello.hs
-Hello, Haskell!
-```
-
-`runghc` interprets the source file instead of compiling it and does not
-create build artifacts. This makes it very useful when developing programs
-and can help accelerate the feedback loop. More information about `runghc`
-can be found in the
-[GHC user guide](https://downloads.haskell.org/ghc/latest/docs/html/users_guide/runghc.html).
-
-### Turning on warnings
-
-The `-Wall` flag will enable GHC to emit warnings about our code.
-
-```sh
-➜ ghc -Wall hello.hs -fforce-recomp
-[1 of 1] Compiling Main             ( hello.hs, hello.o )
-
-hello.hs:1:1: warning: [-Wmissing-signatures]
-    Top-level binding with no type signature: main :: IO ()
-  |
-1 | main = putStrLn "Hello, Haskell!"
-  | ^^^^
-Linking hello ...
-```
-
-While Haskell can infer
-the types of most expressions, it is recommended that top-level definitions
-are annotated with their types.
-
-Now our `hello.hs` source file should looks like this:
-
-```hs
-main :: IO ()
-main = putStrLn "Hello, world!"
-```
-
-And now GHC will compile `hello.hs` without warnings.
-
-## An interactive environment
-
-GHC provides an interactive environment in a form of a
-Read-Evaluate-Print Loop (REPL) called GHCi.
-To enter the environment run the program `ghci`.
-
-```sh
-➜ ghci
-GHCi, version 9.0.2: https://www.haskell.org/ghc/  :? for help
-ghci> 
-```
-
-It provides an interactive prompt where Haskell expressions can be written and
-evaluated.
-
-For example:
-
-```sh
-ghci> 1 + 1
-2
-ghci> putStrLn "Hello, world!"
-Hello, world!
-```
-
-We can define new names:
-
-```sh
-ghci> double x = x + x
-ghci> double 2
-4
-```
-
-We can write multi-line code by surrounding it with `:{` and `:}`:
-
-```hs
-ghci> :{
-| map f list =
-|     case list of
-|         [] -> []
-|         x : xs -> f x : map f xs
-| :}
-ghci> map (+1) [1, 2, 3]
-[2,3,4]
-
-```
-
-We can import Haskell source files using the `:load` command (`:l` for short):
-
-```sh
-ghci> :load hello.hs
-[1 of 1] Compiling Main             ( hello.hs, interpreted )
-Ok, one module loaded.
-ghci> main
-Hello, Haskell!
-```
-
-As well as import library modules:
-
-```sh
-ghci> import Data.Bits
-ghci> shiftL 32 1
-64
-ghci> clearBit 33 0
-32
-```
-
-We can even ask what the type of an expression is using the `:type` command
-(`:t` for short):
-
-```sh
-λ> :type putStrLn
-putStrLn :: String -> IO ()
-```
-
-To exit `ghci`, use the `:quit` command (or `:q` for short)
-
-```sh
-ghci> :quit
-Leaving GHCi.
-```
-
-A more thorough introduction to GHCi can be found in the
-[GHC user guide](https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/ghci.html).
-
-### Using external packages in ghci
-
-By default, GHCi can only load and use packages that are
-[included with the GHC installation](https://downloads.haskell.org/ghc/latest/docs/html/users_guide/9.2.2-notes.html#included-libraries).
-
-However, users of the [cabal-install](https://www.haskell.org/cabal) and
-[stack](http://haskellstack.org) build tools can download and load external packages
-very easily using the following commands:
-
-cabal-install:
-
-```sh
-cabal repl --build-depends async,say
-```
-
-Stack:
-
-```sh
-stack exec --package async --package say -- ghci
-```
-
-And the modules of the relevant packages will be available for import:
-
-```sh
-GHCi, version 9.0.1: https://www.haskell.org/ghc/  :? for help
-ghci> import Control.Concurrent.Async 
-ghci> import Say
-ghci> concurrently_ (sayString "Hello") (sayString "World")
-Hello
-World
-```
-
-Stack users can also use this feature with `runghc` and `ghc` by replacing
-`ghci` in the command above, and cabal-install users can generate an
-environment file that will make `async` and `say` visible for GHC tools
-in the current directory using this command:
-
-```sh
-cabal install --lib async say --package-env .
-```
-
-Many more packages are waiting for you on [Hackage](https://hackage.haskell.org).
-
-## Creating a proper package with modules
-
-The previous methods to compile Haskell code are for quick experiments and small
-programs. Usually in Haskell, we create cabal projects, where build tools such as
-`cabal-install` or `stack` will install necessary dependencies and compile modules
-in correct order. For simplicity's sake, this section will only use `cabal-install`.
-
-To get started, run:
-
-```sh
-mkdir haskell-project
-cd haskell-project
-cabal init --interactive
-```
-
-If you let it generate a simple project with sensible defaults, then you should have these files:
-
-* `src/MyLib.hs`: the library module of your project
-* `app/Main.hs`: the entry point of your project
-* `haskell-project.cabal`: the "cabal" file, describing your project, its dependencies and how it's built
-
-To build the project, run:
-
-```sh
-cabal build
-```
-
-To run the main executable, run:
-
-```sh
-➜ cabal run
-Hello, Haskell!
-someFunc
-```
-
-### Adding dependencies
-
-Now let's add a dependency and adjust our library module. Open `haskell-project.cabal`
-and find the library section:
-
-```
-library
-    exposed-modules:  MyLib
-
-    -- Modules included in this library but not exported.
-    -- other-modules:
-
-    -- LANGUAGE extensions used by modules in this package.
-    -- other-extensions:
-    build-depends:    base ^>=4.14.3.0
-    hs-source-dirs:   src
-    default-language: Haskell2010
-```
-
-The interesting parts here are `exposed-modules` and `build-depends`.
-To add a dependency, it should look like this:
-
-```
-    build-depends:    base ^>=4.14.3.0
-	                , directory
-```
-
-Now open `src/MyLib.hs` and change it to:
-
-```hs
-module MyLib (someFunc) where
-
-import System.Directory
-
-someFunc :: IO ()
-someFunc = do
-  contents <- listDirectory "src"
-  putStrLn (show contents)
-```
-
-### Adding modules
-
-To add a module to your package, adjust `exposed-modules`, like so
-
-```
-    exposed-modules:  MyLib
-	                  OtherLib
-```
-
-then create `src/OtherLib.hs` with the following contents:
-
-```hs
-module OtherLib where
-
-otherFunc :: String -> Int
-otherFunc str = length str
-```
-
-To use this function interactively, we can run:
-
-```sh
-➜ cabal repl
-ghci> import OtherLib
-ghci> otherFunc "Hello Haskell"
-13
-```
-
-For further information about how to manage Haskell projects
-see the [Cabal user guide](https://cabal.readthedocs.io/en/stable/getting-started.html).
-
-# Where to go from here
-
-<div class="text-center main-buttons">
-<a href="https://hackage.haskell.org/" class="btn btn-primary" role="button">Discover Haskell packages</a>
-<a href="https://hackage.haskell.org/package/base" class="btn btn-primary" role="button">The standard library</a>
-<a href="https://haskell-language-server.readthedocs.io/en/stable/installation.html" class="btn btn-primary" role="button">Editor setup with HLS</a>
-<a href="https://play-haskell.tomsmeding.com/play" class="btn btn-primary" role="button">Online playground</a>
-</div>
-
-## How to learn Haskell proper
-
-To learn Haskell, try any of those:
-
- A beginner friendly [4-lectures course](https://github.com/haskell-beginners-2022/course-plan) with exercises (by [Kowainik](https://kowainik.github.io/))
- An in-depth university [CIS 194 Haskell course](https://www.cis.upenn.edu/~cis194/spring13/) including exercises (by [Brent Yorgey](https://byorgey.wordpress.com/))
-
-## Projects to contribute to
-
-* [https://github.com/haskell/haskell-language-server](https://github.com/haskell/haskell-language-server)
-* [https://github.com/haskell/cabal](https://github.com/haskell/cabal)
-* [https://github.com/commercialhaskell/stack](https://github.com/commercialhaskell/stack)
-* [https://gitlab.haskell.org/haskell/ghcup-hs](https://gitlab.haskell.org/haskell/ghcup-hs)
-* [https://github.com/jgm/pandoc](https://github.com/jgm/pandoc)
-* [https://github.com/simonmichael/hledger](https://github.com/simonmichael/hledger)
-* [https://github.com/koalaman/shellcheck](https://github.com/koalaman/shellcheck)
--- a/ghcup-0.0.2.yaml
+++ b/ghcup-0.0.2.yaml
--- a/ghcup-0.0.3.yaml
+++ b/ghcup-0.0.3.yaml
--- a/ghcup-0.0.4.yaml
+++ b/ghcup-0.0.4.yaml
--- a/ghcup-0.0.5.yaml
+++ b/ghcup-0.0.5.yaml
--- a/ghcup.cabal
+++ b/ghcup.cabal
@@ -1,29 +1,28 @@
-cabal-version:      3.0
-name:               ghcup
-version:            0.1.17.7
-license:            LGPL-3.0-only
-license-file:       LICENSE
-copyright:          Julian Ospald 2020
-maintainer:         hasufell@posteo.de
-author:             Julian Ospald
-homepage:           https://gitlab.haskell.org/haskell/ghcup-hs
-bug-reports:        https://gitlab.haskell.org/haskell/ghcup-hs/issues
-synopsis:           ghc toolchain installer
+cabal-version:   3.0
+name:            ghcup
+version:         0.1.15.2
+license:         LGPL-3.0-only
+license-file:    LICENSE
+copyright:       Julian Ospald 2020
+maintainer:      hasufell@posteo.de
+author:          Julian Ospald
+homepage:        https://gitlab.haskell.org/haskell/ghcup-hs
+bug-reports:     https://gitlab.haskell.org/haskell/ghcup-hs/issues
+synopsis:        ghc toolchain installer
 description:
  A rewrite of the shell script ghcup, for providing
  a more stable user experience and exposing an API.

-category:           System
-build-type:         Simple
+category:        System
+build-type:      Simple
 extra-doc-files:
  CHANGELOG.md
-  data/config.yaml
+  config.yaml
+  ghcup-0.0.4.yaml
+  ghcup-0.0.5.yaml
+  HACKING.md
  README.md
-
-extra-source-files:
-  data/build_mk/cross
-  data/build_mk/default
-  test/golden/GHCupInfo.json
+  RELEASING.md

 source-repository head
  type:     git
@@ -43,15 +42,8 @@ flag internal-downloader
  default:     False
  manual:      True

-flag no-exe
-  description: Don't build any executables 
-  default:     False
-  manual:      True
-
-flag disable-upgrade
-  description:
-    Disable upgrade functionality. This is mainly to support brew packagers.
-
+flag tar
+  description: Use tar-bytestring instead of libarchive.
  default:     False
  manual:      True

@@ -65,7 +57,6 @@ library
    GHCup.Requirements
    GHCup.Types
    GHCup.Types.JSON
-    GHCup.Types.JSON.Utils
    GHCup.Types.Optics
    GHCup.Utils
    GHCup.Utils.Dirs
@@ -91,6 +82,7 @@ library
    QuasiQuotes
    RecordWildCards
    ScopedTypeVariables
+    Strict
    StrictData
    TupleSections
    TypeApplications
@@ -102,38 +94,42 @@ library
    -fwarn-incomplete-record-updates

  build-depends:
-    , aeson                 >=1.4
+    , aeson                 >=1.4        && <1.6
    , async                 >=0.8        && <2.3
-    , base                  >=4.12       && <5
+    , base                  >=4.13       && <5
    , base16-bytestring     >=0.1.1.6    && <1.1
    , binary                ^>=0.8.6.0
    , bytestring            ^>=0.10
-    , Cabal                 ^>=3.6.2.0
    , case-insensitive      ^>=1.2.1.0
    , casing                ^>=0.1.4.1
+    , concurrent-output     ^>=1.10.11
    , containers            ^>=0.6
    , cryptohash-sha256     ^>=0.11.101.0
    , deepseq               ^>=1.4.4.0
    , directory             ^>=1.3.6.0
    , disk-free-space       ^>=0.1.0.1
+    , extra                 ^>=1.7.9
    , filepath              ^>=1.4.2.1
+    , generics-sop          ^>=0.5
    , haskus-utils-types    ^>=1.5
-    , haskus-utils-variant  ^>=3.2.1
-    , libarchive            ^>=3.0.3.0
+    , haskus-utils-variant  >=3.0        && <3.2
    , lzma-static           ^>=5.2.5.3
-    , megaparsec            >=8.0.0      && <9.3
+    , megaparsec            >=8.0.0      && <9.1
+    , monad-logger          ^>=0.3.31
    , mtl                   ^>=2.2
-    , optics                ^>=0.4
+    , optics                >=0.2        && <0.5
+    , optics-vl             ^>=0.2
    , os-release            ^>=1.0.0
+    , parsec                ^>=3.1
    , pretty                ^>=1.1.3.1
    , pretty-terminal       ^>=0.1.0.0
    , regex-posix           ^>=0.96
    , resourcet             ^>=1.2.2
-    , retry                 ^>=0.8.1.2
    , safe                  ^>=0.3.18
    , safe-exceptions       ^>=0.1
    , split                 ^>=0.2.3.4
    , strict-base           ^>=0.4
+    , string-interpolate    >=0.2.0.0    && <0.4
    , template-haskell      >=2.7        && <2.18
    , temporary             ^>=1.3
    , text                  ^>=1.2.4.0
@@ -142,10 +138,12 @@ library
    , unliftio-core         ^>=0.2.0.1
    , unordered-containers  ^>=0.2.10.0
    , uri-bytestring        ^>=0.3.2.2
+    , utf8-string           ^>=1.0
    , vector                ^>=0.12
    , versions              >=4.0.1      && <5.1
    , word8                 ^>=0.1.3
-    , yaml-streamly         ^>=0.12.0
+    , yaml                  ^>=0.11.4.0
+    , zip                   ^>=1.7.1
    , zlib                  ^>=0.6.2.2

  if (flag(internal-downloader) && !os(windows))
@@ -157,27 +155,28 @@ library
      , io-streams             >=1.5.2.1
      , terminal-progress-bar  >=0.4.1

+  if flag(tar)
+    cpp-options:   -DTAR
+    build-depends: tar
+
+  else
+    build-depends: libarchive ^>=3.0.0.0
+
  if os(windows)
    cpp-options:   -DIS_WINDOWS
-    other-modules:
-      GHCup.Utils.File.Windows
-      GHCup.Utils.Prelude.Windows
-      GHCup.Utils.Windows
-
+    other-modules: GHCup.Utils.File.Windows
    build-depends:
      , bzlib
      , process  ^>=1.6.11.0
+      , retry    ^>=0.8.1.2
      , Win32    ^>=2.10

  else
-    other-modules:
-      GHCup.Utils.File.Posix
-      GHCup.Utils.Posix
-      GHCup.Utils.Prelude.Posix
-
+    other-modules: GHCup.Utils.File.Posix
    build-depends:
      , bz2              >=0.5.0.5 && <1.1
-      , terminal-size    ^>=0.3.2.1
+      , hpath-posix      ^>=0.13.3
+      , process          ^>=1.6.9
      , unix             ^>=2.7
      , unix-bytestring  ^>=0.3.7.3

@@ -187,25 +186,6 @@ library

 executable ghcup
  main-is:            Main.hs
-  other-modules:
-    GHCup.OptParse
-    GHCup.OptParse.ChangeLog
-    GHCup.OptParse.Common
-    GHCup.OptParse.Compile
-    GHCup.OptParse.Config
-    GHCup.OptParse.DInfo
-    GHCup.OptParse.GC
-    GHCup.OptParse.Install
-    GHCup.OptParse.List
-    GHCup.OptParse.Nuke
-    GHCup.OptParse.Prefetch
-    GHCup.OptParse.Rm
-    GHCup.OptParse.Run
-    GHCup.OptParse.Set
-    GHCup.OptParse.ToolRequirements
-    GHCup.OptParse.UnSet
-    GHCup.OptParse.Whereis
-
  hs-source-dirs:     app/ghcup
  default-language:   Haskell2010
  default-extensions:
@@ -215,6 +195,7 @@ executable ghcup
    PackageImports
    RecordWildCards
    ScopedTypeVariables
+    Strict
    StrictData
    TupleSections

@@ -223,38 +204,27 @@ executable ghcup
    -fwarn-incomplete-record-updates -threaded

  build-depends:
-    , aeson                 >=1.4
-    , aeson-pretty          ^>=0.8.8
-    , async                 ^>=2.2.3
-    , base                  >=4.12     && <5
+    , base                  >=4.13     && <5
    , bytestring            ^>=0.10
-    , cabal-plan            ^>=0.7.2
    , containers            ^>=0.6
-    , deepseq               ^>=1.4
-    , directory             ^>=1.3.6.0
    , filepath              ^>=1.4.2.1
    , ghcup
-    , haskus-utils-variant  ^>=3.2.1
-    , libarchive            ^>=3.0.3.0
-    , megaparsec            >=8.0.0    && <9.3
+    , haskus-utils-variant  >=3.0      && <3.2
+    , megaparsec            >=8.0.0    && <9.1
+    , monad-logger          ^>=0.3.31
    , mtl                   ^>=2.2
-    , optparse-applicative  >=0.15.1.0 && <0.18
+    , optparse-applicative  >=0.15.1.0 && <0.17
    , pretty                ^>=1.1.3.1
    , pretty-terminal       ^>=0.1.0.0
-    , process               ^>=1.6.11.0
    , resourcet             ^>=1.2.2
    , safe                  ^>=0.3.18
    , safe-exceptions       ^>=0.1
-    , tagsoup               ^>=0.14
+    , string-interpolate    >=0.2.0.0  && <0.4
    , template-haskell      >=2.7      && <2.18
-    , temporary             ^>=1.3
    , text                  ^>=1.2.4.0
-    , unordered-containers  ^>=0.2
    , uri-bytestring        ^>=0.3.2.2
    , utf8-string           ^>=1.0
-    , vector                ^>=0.12
    , versions              >=4.0.1    && <5.1
-    , yaml-streamly         ^>=0.12.0

  if flag(internal-downloader)
    cpp-options: -DINTERNAL_DOWNLOADER
@@ -263,30 +233,78 @@ executable ghcup
    cpp-options:   -DBRICK
    other-modules: BrickMain
    build-depends:
-      , brick         ^>=0.64
+      , brick         >=0.5    && <0.62
      , transformers  ^>=0.5
-      , unix          ^>=2.7
+      , vector        ^>=0.12
      , vty           >=5.28.2 && <5.34

  if os(windows)
    cpp-options: -DIS_WINDOWS

-  else
-    build-depends: unix ^>=2.7
-
-  if flag(no-exe)
-    buildable: False
-
-  if flag(disable-upgrade)
-    cpp-options: -DDISABLE_UPGRADE
+  if flag(tar)
+    cpp-options: -DTAR

  else
-    other-modules: GHCup.OptParse.Upgrade
+    build-depends: libarchive ^>=3.0.0.0
+
+executable ghcup-gen
+  main-is:            Main.hs
+  hs-source-dirs:     app/ghcup-gen
+  other-modules:      Validate
+  default-language:   Haskell2010
+  default-extensions:
+    DeriveGeneric
+    LambdaCase
+    MultiWayIf
+    NamedFieldPuns
+    PackageImports
+    QuasiQuotes
+    RecordWildCards
+    ScopedTypeVariables
+    Strict
+    StrictData
+    TupleSections
+    TypeApplications
+    TypeFamilies
+    ViewPatterns
+
+  ghc-options:
+    -Wall -fwarn-tabs -fwarn-incomplete-uni-patterns
+    -fwarn-incomplete-record-updates -threaded
+
+  build-depends:
+    , base                  >=4.13     && <5
+    , bytestring            ^>=0.10
+    , containers            ^>=0.6
+    , filepath              ^>=1.4.2.1
+    , ghcup
+    , haskus-utils-variant  >=3.0      && <3.2
+    , monad-logger          ^>=0.3.31
+    , mtl                   ^>=2.2
+    , optics                >=0.2      && <0.5
+    , optparse-applicative  >=0.15.1.0 && <0.17
+    , pretty                ^>=1.1.3.1
+    , pretty-terminal       ^>=0.1.0.0
+    , regex-posix           ^>=0.96
+    , resourcet             ^>=1.2.2
+    , safe-exceptions       ^>=0.1
+    , string-interpolate    >=0.2.0.0  && <0.4
+    , text                  ^>=1.2.4.0
+    , transformers          ^>=0.5
+    , uri-bytestring        ^>=0.3.2.2
+    , versions              >=4.0.1    && <5.1
+    , yaml                  ^>=0.11.4.0
+
+  if flag(tar)
+    cpp-options:   -DTAR
+    build-depends: tar
+
+  else
+    build-depends: libarchive ^>=3.0.0.0

 test-suite ghcup-test
  type:               exitcode-stdio-1.0
  main-is:            Main.hs
-  build-tool-depends: hspec-discover:hspec-discover -any
  hs-source-dirs:     test
  other-modules:
    GHCup.ArbitraryTypes
@@ -307,12 +325,12 @@ test-suite ghcup-test
    -fwarn-incomplete-record-updates

  build-depends:
-    , base                      >=4.12    && <5
+    , base                      >=4.13    && <5
    , bytestring                ^>=0.10
    , containers                ^>=0.6
-    , generic-arbitrary         >=0.1.0   && <0.3
+    , generic-arbitrary         ^>=0.1.0
    , ghcup
-    , hspec                     >=2.7.10  && <2.10
+    , hspec                     ^>=2.7.10
    , hspec-golden-aeson        ^>=0.9
    , QuickCheck                ^>=2.14.1
    , quickcheck-arbitrary-adt  ^>=0.3.1.0
--- a/test/golden/GHCupInfo.json
+++ b/test/golden/GHCupInfo.json
--- a/hie.yaml
+++ b/hie.yaml
@@ -4,5 +4,7 @@ cradle:
    path: ./lib
  - component: "ghcup:exe:ghcup"
    path: ./app/ghcup
+  - component: "ghcup:exe:ghcup-gen"
+    path: "./app/ghcup-gen"
  - component: "ghcup:test:ghcup-test"
    path: ./test
--- a/lib/GHCup.hs
+++ b/lib/GHCup.hs
--- a/Show More
+++ b/Show More