First cross try

2020-04-27 07:49:08 +02:00
155 changed files with 10289 additions and 69206 deletions
--- a/scripts/shell-completions/bash
+++ b/scripts/shell-completions/bash
--- 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: ${{ matrix.os }}
-    env:
-      MACOSX_DEPLOYMENT_TARGET: 10.13
-    strategy:
-      matrix:
-        os:
-          - macOS-10.15
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v2
-
-      - uses: haskell/actions/setup@v1.2
-        with:
-          ghc-version: 8.10.4
-          cabal-version: 3.4.0.0
-
-      - name: create ~/.local/bin
-        run: mkdir -p "$HOME/.local/bin"
-        shell: bash
-
-      - name: Add ~/.local/bin to PATH
-        run: echo "$HOME/.local/bin" >> $GITHUB_PATH
-        shell: bash
-
-      - name: Update cabal cache
-        run: cabal update
-        shell: bash
-
-      - name: Install cabal dependencies
-        run: cabal build --only-dependencies --constraint="zlib +bundled-c-zlib" --constraint="lzma +static" -ftui
-        shell: bash
-
-      - name: Build
-        run: cabal build --constraint="zlib +bundled-c-zlib" --constraint="lzma +static" -ftui
-        shell: bash
-
-      - name: Install
-        run: cp "$(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
@@ -1,17 +1,2 @@
-.ghci
-.vim
-codex.tags
 dist-newstyle/
-cabal.project.local
 .stack-work/
-bin/
-/*.prof
-/*.ps
-/*.hp
-tags
-TAGS
-/tmp/
-.entangled
-release/
-releases/
-site/
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,127 +1,63 @@
-stages:
-  - checks
-  - quick-test
-  - test
-  - expensive-test
-  - release
-
 variables:
  GIT_SSL_NO_VERIFY: "1"

  # Commit of ghc/ci-images repository from which to pull Docker images
-  DOCKER_REV: 8d0224e6b2a08157649651e69302380b2bd24e11
+  DOCKER_REV: cefaee3c742af193e0f7783f87edb0d35374515c

 ############################################################
 # 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"
+  image: "alpine:edge"
  tags:
    - x86_64-linux
  variables:
    OS: "LINUX"
-    ARCH: "64"
-    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
+    BIT: "64"

 .alpine:32bit:
-  image: "i386/alpine:3.12"
+  image: "i386/alpine:edge"
  tags:
    - x86_64-linux
  variables:
    OS: "LINUX"
-    ARCH: "32"
-    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
-
-.linux:armv7:
-  image: "registry.gitlab.haskell.org/ghc/ci-images/armv7-linux-deb10:$DOCKER_REV"
-  tags:
-    - armv7-linux
-  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"
-  tags:
-    - aarch64-linux
-  variables:
-    OS: "LINUX"
-    ARCH: "ARM64"
-    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
+    BIT: "32"

 .darwin:
  tags:
    - x86_64-darwin
  variables:
    OS: "DARWIN"
-    ARCH: "64"
-    CABAL_DIR: "$CI_PROJECT_DIR/cabal"

-.darwin:aarch64:
+.freebsd:
  tags:
-    - aarch64-darwin-m1
-  variables:
-    OS: "DARWIN"
-    ARCH: "ARM64"
-    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
-
-.freebsd13:
-  tags:
-    - x86_64-freebsd13
+    - x86_64-freebsd
  variables:
    OS: "FREEBSD"
-    ARCH: "64"
-    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
-
-.freebsd12:
-  tags:
-    - x86_64-freebsd12
-  variables:
-    OS: "FREEBSD"
-    ARCH: "64"
-    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
-
-.windows:
-  tags:
-    - new-x86_64-windows
-  variables:
-    OS: "WINDOWS"
-    ARCH: "64"
-    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
-  retry: 2

 .root_cleanup:
  after_script:
-    - bash ./.gitlab/after_script.sh
+    - BUILD_DIR=$CI_PROJECT_DIR
+    - echo "Cleaning $BUILD_DIR"
+    - cd $HOME
+    - test -n "$BUILD_DIR"
+    - shopt -s extglob
+    - rm -Rf "$BUILD_DIR"/!(out)
+    - exit 0

 .test_ghcup_version:
  script:
-    - bash ./.gitlab/script/ghcup_version.sh
+    - ./.gitlab/script/ghcup_version.sh
  variables:
-    JSON_VERSION: "0.0.6"
-  artifacts:
-    expire_in: 2 week
-    paths:
-      - test/golden
-      - dist-newstyle/cache/
-    when: on_failure
-
-# .test_ghcup_scoop:
-  # script:
-    # - cl /O1 scoop-better-shimexe/shim.c
+    JSON_VERSION: "0.0.2"

 .test_ghcup_version:linux:
  extends:
@@ -130,27 +66,6 @@ variables:
  before_script:
    - ./.gitlab/before_script/linux/install_deps.sh

-.test_ghcup_version:linux32:
-  extends:
-    - .test_ghcup_version
-    - .alpine:32bit
-  before_script:
-    - ./.gitlab/before_script/linux/alpine/install_deps.sh
-
-.test_ghcup_version:armv7:
-  extends:
-    - .test_ghcup_version
-    - .linux:armv7
-  before_script:
-    - ./.gitlab/before_script/linux/install_deps.sh
-
-.test_ghcup_version:aarch64:
-  extends:
-    - .test_ghcup_version
-    - .linux:aarch64
-  before_script:
-    - ./.gitlab/before_script/linux/install_deps.sh
-
 .test_ghcup_version:darwin:
  extends:
    - .test_ghcup_version
@@ -159,279 +74,75 @@ variables:
  before_script:
    - ./.gitlab/before_script/darwin/install_deps.sh

-.test_ghcup_version:darwin:aarch64:
+.test_ghcup_version:freebsd:
  extends:
    - .test_ghcup_version
-    - .darwin:aarch64
-    - .root_cleanup
-  script: |
-    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:
-  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:
-    - ./.gitlab/before_script/freebsd/install_deps.sh
-
-.test_ghcup_version:windows:
-  extends:
-    - .test_ghcup_version
-    - .windows
-    - .root_cleanup
-  before_script:
-    - 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
+    - ./.gitlab/script/ghcup_release.sh
  artifacts:
    expire_in: 2 week
    paths:
      - out
-      - dist-newstyle/cache/
  only:
    - tags
-  variables:
-    JSON_VERSION: "0.0.6"
-
-######## stack test ########
-
-test:linux:stack:
-  stage: test
-  before_script:
-    - ./.gitlab/before_script/linux/install_deps_minimal.sh
-  script:
-    - ./.gitlab/script/ghcup_stack.sh
-  extends:
-    - .debian
-  needs: []
-
-######## bootstrap test ########
-
-test:linux:bootstrap_script:
-  stage: quick-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"
-  extends:
-    - .debian
-    - .root_cleanup
-  needs: []
-
-test:windows:bootstrap_powershell_script:
-  stage: quick-test
-  script:
-    - ./scripts/bootstrap/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"
-  extends:
-    - .windows
-  needs: []

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

-test:linux:
-  stage: test
+test:linux:recommended:
  extends: .test_ghcup_version:linux
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-  needs: []
+    GHC_VERSION: "8.6.5"
+    CABAL_VERSION: "3.2.0.0"

-test:linux:hls:
-  stage: expensive-test
-  extends:
-    - .test_ghcup_version
-    - .debian
+test:linux:latest:
+  extends: .test_ghcup_version:linux
  variables:
-    GHC_VERSION: "8.10.7"
-    HLS_TARGET_VERSION: "1.4.0"
-    CABAL_VERSION: "3.6.2.0"
-  needs: []
-  when: manual
+    GHC_VERSION: "8.8.3"
+    CABAL_VERSION: "3.2.0.0"
  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:
-  stage: test
-  extends: .test_ghcup_version:linux32
-  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-  needs: []
-
-######## arm tests ########
-
-test:linux:armv7:
-  stage: test
-  extends: .test_ghcup_version:armv7
-  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-    CROSS: ""
-  when: manual
-  needs: []
-
-test:linux:aarch64:
-  stage: test
-  extends: .test_ghcup_version:aarch64
-  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-    CROSS: ""
-  when: manual
-  needs: []

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

-test:mac:
-  stage: test
+test:mac:recommended:
  extends: .test_ghcup_version:darwin
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-  needs: []
+    GHC_VERSION: "8.6.5"
+    CABAL_VERSION: "3.2.0.0"

-test:mac:aarch64:
-  stage: test
-  extends: .test_ghcup_version:darwin:aarch64
+test:mac:latest:
+  extends: .test_ghcup_version:darwin
  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-  needs: []
+    GHC_VERSION: "8.8.3"
+    CABAL_VERSION: "3.2.0.0"
  allow_failure: true


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

-test:freebsd12:
-  stage: test
-  extends: .test_ghcup_version:freebsd12
+test:freebsd:recommended:
+  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: []
+    GHC_VERSION: "8.6.5"
+    CABAL_VERSION: "3.2.0.0"

-test:freebsd13:
-  stage: test
-  extends: .test_ghcup_version:freebsd13
+test:freebsd:latest:
+  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: []
+    GHC_VERSION: "8.8.3"
+    CABAL_VERSION: "3.2.0.0"
+  allow_failure: true

-######## windows test ########
-
-test:windows:
-  stage: test
-  extends: .test_ghcup_version:windows
-  variables:
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-  needs: []
-
-# test:windows:scoop:
-  # stage: test
-  # extends: .test_ghcup_scoop:windows
-  # needs: []

 ######## linux release ########

 release:linux:64bit:
-  stage: release
-  needs: ["test:linux"]
  extends:
    - .alpine:64bit
    - .release_ghcup
@@ -439,56 +150,25 @@ 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: "8.8.3"
+    CABAL_VERSION: "3.2.0.0"


 release:linux:32bit:
-  stage: release
-  needs: ["test:linux:32bit"]
  extends:
    - .alpine:32bit
    - .release_ghcup
  before_script:
    - ./.gitlab/before_script/linux/alpine/install_deps.sh
  variables:
-    ARTIFACT: "i386-linux-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
+    ARTIFACT: "x86_64-linux-ghcup"
+    GHC_VERSION: "8.8.3"
+    CABAL_VERSION: "3.2.0.0"

-release:linux:armv7:
-  stage: release
-  needs: ["test:linux:armv7"]
-  extends:
-    - .linux:armv7
-    - .release_ghcup
-  before_script:
-    - ./.gitlab/before_script/linux/install_deps.sh
-  variables:
-    ARTIFACT: "armv7-linux-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-    CROSS: ""
-
-release:linux:aarch64:
-  stage: release
-  needs: ["test:linux:aarch64"]
-  extends:
-    - .linux:aarch64
-    - .release_ghcup
-  before_script:
-    - ./.gitlab/before_script/linux/install_deps.sh
-  variables:
-    ARTIFACT: "aarch64-linux-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-    CROSS: ""

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

 release:darwin:
-  stage: release
-  needs: ["test:mac"]
  extends:
    - .darwin
    - .release_ghcup
@@ -497,130 +177,21 @@ 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: "8.8.3"
+    CABAL_VERSION: "3.2.0.0"
    MACOSX_DEPLOYMENT_TARGET: "10.7"

-release:darwin:aarch64:
-  stage: release
-  needs: ["test:mac:aarch64"]
-  extends:
-    - .darwin:aarch64
-    - .release_ghcup
-    - .root_cleanup
-  script: |
-    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_release.sh 2>&1
-  variables:
-    ARTIFACT: "aarch64-apple-darwin-ghcup"
-    GHC_VERSION: "8.10.7"
-    CABAL_VERSION: "3.6.2.0"
-    MACOSX_DEPLOYMENT_TARGET: "10.7"
-  allow_failure: true
-

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

-release:freebsd12:
-  stage: release
-  needs: ["test:freebsd12"]
+release:freebsd:
  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:
-    - ./.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
-
-######## windows release ########
-
-release:windows:
-  stage: release
-  needs: ["test:windows"]
-  extends:
-    - .windows
-    - .release_ghcup
-    - .root_cleanup
-  before_script:
-    - 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"
-
-######## hlint ########
-
-hlint:
-  stage: checks
-  extends:
-    - .debian
-  script:
-    - curl -sSL https://raw.github.com/ndmitchell/hlint/master/misc/run.sh | sh -s -- -r lib/ test/
-  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
+    GHC_VERSION: "8.6.5"

--- a/.gitlab/after_script.sh
+++ b/.gitlab/after_script.sh
@@ -1,15 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-BUILD_DIR=$CI_PROJECT_DIR
-echo "Cleaning $BUILD_DIR"
-cd $HOME
-test -n "$BUILD_DIR"
-shopt -s extglob
-rm -Rf "$BUILD_DIR"/!(out)
-if [ "${OS}" = "WINDOWS" ] ; then
-	rm -Rf /c/ghcup
-fi
-
-exit 0
--- a/.gitlab/before_script/darwin/install_deps.sh
+++ b/.gitlab/before_script/darwin/install_deps.sh
@@ -4,29 +4,11 @@ set -eux

 . "$( cd "$(dirname "$0")" ; pwd -P )/../../ghcup_env"

-mkdir -p "${TMPDIR}"
-
-if [ $ARCH = 'ARM64' ] ; then
-	curl -sSfL https://downloads.haskell.org/~ghcup/aarch64-apple-darwin-ghcup > ./ghcup-bin
-	chmod +x ghcup-bin
-else
-	curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-apple-darwin-ghcup > ./ghcup-bin
-	chmod +x ghcup-bin
-	./ghcup-bin upgrade -i -f
-fi
+curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-apple-darwin-ghcup > ./ghcup-bin
+chmod +x ghcup-bin

 ./ghcup-bin install ${GHC_VERSION}
 ./ghcup-bin set ${GHC_VERSION}
 ./ghcup-bin install-cabal ${CABAL_VERSION}

-if [ $ARCH = 'ARM64' ] ; then
-	cabal update
-	mkdir vendored
-	cd vendored
-	cabal unpack network-3.1.2.1
-	cd network*
-	autoreconf -fi
-	cd ../..
-fi
-
 exit 0
--- a/.gitlab/before_script/freebsd/install_deps.sh
+++ b/.gitlab/before_script/freebsd/install_deps.sh
@@ -6,14 +6,18 @@ set -eux

 . "$( cd "$(dirname "$0")" ; pwd -P )/../../ghcup_env"

-mkdir -p "${TMPDIR}"
-
 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 ${CABAL_VERSION}
+mkdir -p "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin
+# ./ghcup-bin install ${GHC_VERSION}
+# ./ghcup-bin install-cabal ${CABAL_VERSION}
+# ./ghcup-bin set ${GHC_VERSION}
+
+# install cabal-3.2.0.0
+curl -sSfL -o cabal-install-3.2.0.0-x86_64-portbld-freebsd.tar.xz 'https://hasufell.de/d/d3e215db133e4fcaa61e/files/?p=/cabal-install-3.2.0.0-x86_64-portbld-freebsd.tar.xz&dl=1'
+tar xf cabal-install-3.2.0.0-x86_64-portbld-freebsd.tar.xz
+cp cabal "${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/bin/cabal"
+chmod +x "${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/bin/cabal"

 exit 0
--- a/.gitlab/before_script/linux/alpine/install_deps.sh
+++ b/.gitlab/before_script/linux/alpine/install_deps.sh
@@ -4,15 +4,10 @@ set -eux

 . "$( cd "$(dirname "$0")" ; pwd -P )/../../../ghcup_env"

-mkdir -p "${TMPDIR}"
-
 apk add --no-cache \
 	curl \
 	gcc \
 	g++ \
-	binutils \
-	binutils-gold \
-	bsd-compat-headers \
 	gmp-dev \
 	ncurses-dev \
 	libffi-dev \
@@ -21,38 +16,45 @@ apk add --no-cache \
 	tar \
 	perl

-if [ "${ARCH}" = "32" ] ; then
-	curl -sSfL https://downloads.haskell.org/ghcup/i386-linux-ghcup > ./ghcup-bin
+ln -s libncurses.so /usr/lib/libtinfo.so
+ln -s libncursesw.so.6 /usr/lib/libtinfow.so.6
+if [ "${BIT}" = "32" ] ; then
+	curl -sSfL https://downloads.haskell.org/~ghcup/0.1.4/i386-linux-ghcup-0.1.4 > ./ghcup-bin
 else
-	curl -sSfL https://downloads.haskell.org/ghcup/x86_64-linux-ghcup > ./ghcup-bin
+	curl -sSfL https://downloads.haskell.org/~ghcup/0.1.4/x86_64-linux-ghcup-0.1.4 > ./ghcup-bin
 fi
 chmod +x ghcup-bin
-./ghcup-bin upgrade -i -f
+./ghcup-bin upgrade
 ./ghcup-bin install ${GHC_VERSION}
-./ghcup-bin install-cabal ${CABAL_VERSION}
+# ./ghcup-bin install-cabal ${CABAL_VERSION}
+# install cabal-3.2.0.0
+if [ "${BIT}" = "32" ] ; then
+	curl -sSfL -o cabal-install-3.2.0.0-i386-alpine-linux-musl.tar.xz 'https://hasufell.de/d/d3e215db133e4fcaa61e/files/?p=/cabal-install-3.2.0.0-i386-alpine-linux-musl.tar.xz&dl=1'
+	tar xf cabal-install-3.2.0.0-i386-alpine-linux-musl.tar.xz
+	cp cabal-install-3.2.0.0-i386-alpine-linux-musl "${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/bin/cabal"
+else
+	curl -sSfL -o cabal-install-3.2.0.0-x86_64-alpine-linux-musl.tar.xz 'https://hasufell.de/d/d3e215db133e4fcaa61e/files/?p=/cabal-install-3.2.0.0-x86_64-alpine-linux-musl.tar.xz&dl=1'
+	tar xf cabal-install-3.2.0.0-x86_64-alpine-linux-musl.tar.xz
+	cp cabal-install-3.2.0.0-x86_64-alpine-linux-musl "${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/bin/cabal"
+fi
+chmod +x "${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/bin/cabal"
+

 # utils
 apk add --no-cache \
-	bash \
-	git
+	bash

 ## Package specific
 apk add --no-cache \
 	zlib \
 	zlib-dev \
 	zlib-static \
-	bzip2 \
-	bzip2-dev \
-	bzip2-static \
 	gmp \
 	gmp-dev \
 	openssl-dev \
 	openssl-libs-static \
 	xz \
-	xz-dev \
-	ncurses-static
+	xz-dev
+
+

-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
@@ -2,26 +2,15 @@

 set -eux

+sudo apt-get update -y
+sudo apt-get install -y libnuma-dev zlib1g-dev libgmp-dev libgmp10 libssl-dev liblzma-dev
+
 . "$( cd "$(dirname "$0")" ; pwd -P )/../../ghcup_env"

-mkdir -p "${TMPDIR}"
+curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-linux-ghcup > ./ghcup-bin
+chmod +x ghcup-bin

-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
-
-if [ "${CROSS}" = "arm-linux-gnueabihf" ] ; then
-	sudo apt-get install -y gcc-arm-linux-gnueabihf
-	sudo dpkg --add-architecture armhf
-	sudo apt-get update -y
-	sudo apt-get install -y libncurses-dev:armhf
-fi
-
-export BOOTSTRAP_HASKELL_NONINTERACTIVE=1
-export BOOTSTRAP_HASKELL_GHC_VERSION=$GHC_VERSION
-export BOOTSTRAP_HASKELL_CABAL_VERSION=$CABAL_VERSION
-export BOOTSTRAP_HASKELL_VERBOSE=1
-
-curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
-
-rm "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/ghcup
+./ghcup-bin install ${GHC_VERSION}
+./ghcup-bin set ${GHC_VERSION}
+./ghcup-bin install-cabal ${CABAL_VERSION}

--- a/.gitlab/before_script/linux/install_deps_minimal.sh
+++ b/.gitlab/before_script/linux/install_deps_minimal.sh
@@ -1,10 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../../ghcup_env"
-
-mkdir -p "${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
--- a/.gitlab/before_script/windows/install_deps.sh
+++ b/.gitlab/before_script/windows/install_deps.sh
@@ -1,21 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../../ghcup_env"
-
-mkdir -p "${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
-chmod +x ghcup.exe
-
-./ghcup.exe install ${GHC_VERSION}
-./ghcup.exe set ${GHC_VERSION}
-./ghcup.exe install-cabal ${CABAL_VERSION}
-
-rm ./ghcup.exe
-
-exit 0
--- a/.gitlab/ghc-8.10.3-linux.files
+++ b/.gitlab/ghc-8.10.3-linux.files
--- a/.gitlab/ghc-8.10.3-windows.files
+++ b/.gitlab/ghc-8.10.3-windows.files
--- a/.gitlab/ghcup_env
+++ b/.gitlab/ghcup_env
@@ -1,11 +1,3 @@
-if [ "${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:$PATH"
-	export TMPDIR="$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:/opt/llvm/bin:$PATH"
-	export TMPDIR="$CI_PROJECT_DIR/tmp"
-fi
+export GHCUP_INSTALL_BASE_PREFIX="$CI_PROJECT_DIR"
+export PATH="$CI_PROJECT_DIR/.ghcup/bin:$CI_PROJECT_DIR/.local/bin:$PATH"
+
--- a/.gitlab/script/ghcup_bootstrap.sh
+++ b/.gitlab/script/ghcup_bootstrap.sh
@@ -1,30 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup_env"
-
-mkdir -p "$CI_PROJECT_DIR"/.local/bin
-
-ecabal() {
-	cabal "$@"
-}
-
-eghcup() {
-	ghcup -v -c -s file://$(pwd)/ghcup-${JSON_VERSION}.yaml "$@"
-}
-
-git describe --always
-
-### build
-
-ecabal update
-
-export BOOTSTRAP_HASKELL_NONINTERACTIVE=yes
-export BOOTSTRAP_HASKELL_GHC_VERSION=$GHC_VERSION
-export BOOTSTRAP_HASKELL_CABAL_VERSION=$CABAL_VERSION
-
-./scripts/bootstrap/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} ${GHC_VERSION}
-
-[ `$(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
@@ -7,38 +7,20 @@ set -eux
 mkdir -p "$CI_PROJECT_DIR"/.local/bin

 ecabal() {
-	cabal "$@"
+	cabal --store-dir="$(pwd)"/.store "$@"
 }

-git describe
-
 # build
 ecabal update

-
 if [ "${OS}" = "LINUX" ] ; then
-	if [ "${ARCH}" = "32" ] ; then
-		ecabal build -w ghc-${GHC_VERSION} --ghc-options='-split-sections -optl-static' -ftui
-	elif [ "${ARCH}" = "64" ] ; then
-		ecabal build -w ghc-${GHC_VERSION} --ghc-options='-split-sections -optl-static' -ftui
-	else
-		ecabal build -w ghc-${GHC_VERSION} -ftui
-	fi
-elif [ "${OS}" = "FREEBSD" ] ; then
-	ecabal build -w ghc-${GHC_VERSION} --ghc-options='-split-sections' --constraint="zlib +bundled-c-zlib" --constraint="zip +disable-zstd" -ftui
-elif [ "${OS}" = "WINDOWS" ] ; then
-	ecabal build -w ghc-${GHC_VERSION} --constraint="zlib +bundled-c-zlib" --constraint="lzma +static"
+	ecabal build -w ghc-${GHC_VERSION} -fcurl --ghc-options='-split-sections -optl-static'
 else
-	ecabal build -w ghc-${GHC_VERSION} --constraint="zlib +bundled-c-zlib" --constraint="lzma +static" -ftui
+	ecabal build -w ghc-${GHC_VERSION} -fcurl
 fi

 mkdir out
-binary=$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup')
-ver=$("${binary}" --numeric-version)
-if [ "${OS}" = "DARWIN" ] ; then
-	strip "${binary}"
-else
-	strip -s "${binary}"
-fi
-cp "${binary}" out/${ARTIFACT}-${ver}
+cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup')" .
+ver=$(./ghcup --numeric-version)
+cp ghcup out/${ARTIFACT}-${ver}

--- a/.gitlab/script/ghcup_stack.sh
+++ b/.gitlab/script/ghcup_stack.sh
@@ -1,21 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup_env"
-
-mkdir -p "$CI_PROJECT_DIR"/.local/bin
-
-git describe --always
-
-### build
-
-curl -L -O https://get.haskellstack.org/stable/linux-x86_64.tar.gz
-tar xf linux-x86_64.tar.gz
-cp stack-*-linux-*/stack "$CI_PROJECT_DIR"/.local/bin/stack
-chmod +x "$CI_PROJECT_DIR"/.local/bin/stack
-
-mkdir -p "$CI_PROJECT_DIR"/.stack_root
-export TAR_OPTIONS=--no-same-owner
-stack --allow-different-user --stack-root "$CI_PROJECT_DIR"/.stack_root build
-stack --allow-different-user --stack-root "$CI_PROJECT_DIR"/.stack_root test
--- a/.gitlab/script/ghcup_version.sh
+++ b/.gitlab/script/ghcup_version.sh
@@ -6,253 +6,82 @@ set -eux

 mkdir -p "$CI_PROJECT_DIR"/.local/bin

-CI_PROJECT_DIR=$(pwd)
-
 ecabal() {
-	cabal "$@"
-}
-
-raw_eghcup() {
-	ghcup -v -c "$@"
+	cabal --store-dir="$(pwd)"/.store "$@"
 }

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

-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

 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-${GHC_VERSION} -finternal-downloader -ftui
-	else
-		ecabal build -w ghc-${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-${GHC_VERSION} -finternal-downloader -ftui --constraint="zip +disable-zstd"
-	ecabal test -w ghc-${GHC_VERSION} -finternal-downloader -ftui --constraint="zip +disable-zstd" ghcup-test
-	ecabal haddock -w ghc-${GHC_VERSION} -finternal-downloader -ftui --constraint="zip +disable-zstd"
-elif [ "${OS}" = "WINDOWS" ] ; then
+	ecabal build -w ghc-${GHC_VERSION} -fcurl
+else
 	ecabal build -w ghc-${GHC_VERSION}
-	ecabal test -w ghc-${GHC_VERSION} ghcup-test
-	ecabal haddock -w ghc-${GHC_VERSION}
-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
 fi

+cp "$(ecabal new-exec --enable-tests --verbose=0 --offline sh -- -c 'command -v ghcup')" .
+cp "$(ecabal new-exec --enable-tests --verbose=0 --offline sh -- -c 'command -v ghcup-gen')" .

-if [ "${OS}" = "WINDOWS" ] ; then
-	ext=".exe"
-else
-	ext=''
-fi
-	cp "$(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${ext}
+cp ./ghcup "$CI_PROJECT_DIR"/.local/bin/ghcup
+cp ./ghcup-gen "$CI_PROJECT_DIR"/.local/bin/ghcup-gen

 ### cleanup

-rm -rf "${GHCUP_DIR}"
+rm -rf "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup
+

 ### manual cli based testing


-ghcup-gen check -f data/metadata/ghcup-${JSON_VERSION}.yaml
+ghcup-gen check -f ghcup-${JSON_VERSION}.json

 eghcup --numeric-version

-eghcup install ghc ${GHC_VERSION}
-[ `$(eghcup whereis ghc ${GHC_VERSION}) --numeric-version` = "${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}" ]
+# TODO: rm once we have tarballs
+if [ "${OS}"  = "FREEBSD" ] ; then
+	GHC_VERSION=8.6.3
+	CABAL_VERSION=2.4.1.0
+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

 ghc_ver=$(ghc --numeric-version)
 ghc --version
-ghc-${ghc_ver} --version
-if [ "${OS}" != "WINDOWS" ] ; then
-		ghci --version
-		ghci-${ghc_ver} --version
-fi
+ghci --version
+ghc-$(ghc --numeric-version) --version
+ghci-$(ghc --numeric-version) --version


-if [ "${OS}" = "DARWIN" ] && [ "${ARCH}" = "ARM64" ] ; then
-	echo
-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}" = "${expected}" ]
-		unset actual expected
-	else
-		eghcup prefetch ghc 8.10.3
-		eghcup --offline install ghc 8.10.3
-	fi
-	[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
-	eghcup --offline set 8.10.3
-	eghcup set 8.10.3
-	[ "$(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 ${GHC_VERSION}
-	eghcup --offline rm 8.10.3
-	[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
-
-
-	if [ "${OS}" = "DARWIN" ] ; then
-		eghcup install hls
-		$(eghcup whereis hls) --version
-
-		eghcup install stack
-		$(eghcup whereis stack) --version
-	elif [ "${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-${JSON_VERSION}.yaml"
+# test installing new ghc doesn't mess with currently set GHC
+# https://gitlab.haskell.org/haskell/ghcup-hs/issues/7
+eghcup install 8.4.4
+[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
+eghcup set 8.4.4
+eghcup set 8.4.4
+[ "$(ghc --numeric-version)" = "8.4.4" ]
+eghcup set ${GHC_VERSION}
+[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
+eghcup rm 8.4.4
+[ "$(ghc --numeric-version)" = "${ghc_ver}" ]

 eghcup rm $(ghc --numeric-version)

-# https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/116
-if [ "${OS}" = "LINUX" ] ; then
-	if [ "${ARCH}" = "64" ] ; then
-		eghcup install cabal -u https://oleg.fi/cabal-install-3.4.0.0-rc4/cabal-install-3.4.0.0-x86_64-ubuntu-16.04.tar.xz 3.4.0.0-rc4
-		eghcup rm cabal 3.4.0.0-rc4
-	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 "${GHCUP_DIR}" ]
--- a/.gitlab/script/hlint.sh
+++ b/.gitlab/script/hlint.sh
@@ -1,19 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup_env"
-
-mkdir -p "$CI_PROJECT_DIR"/.local/bin
-
-ecabal() {
-	cabal --store-dir="$(pwd)"/.store "$@"
-}
-
-git describe
-
-ecabal update
-ecabal install -w ghc-${GHC_VERSION} --installdir="$CI_PROJECT_DIR"/.local/bin hlint
-
-hlint -r lib/ test/ 
-
--- a/.gitlab/shell.nix
+++ b/.gitlab/shell.nix
@@ -1,90 +0,0 @@
-{ 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"
-  export NIX_LDFLAGS="-L/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib $NIX_LDFLAGS"
-
-  '';
-
-  nativeBuildInputs = (with pkgs; [
-    # This needs to come *before* ghc,
-    # otherwise we migth end up with the clang from
-    # the bootstrap GHC in PATH with higher priority.
-    clang_11
-    llvm_11
-
-    haskell.compiler.${compiler}
-    haskell.packages.${compiler}.cabal-install
-    haskell.packages.${compiler}.alex
-    haskell.packages.${compiler}.happy # _1_19_12 is needed for older GHCs.
-
-    automake
-    autoconf
-    m4
-
-    gmp
-    zlib.out
-    zlib.dev
-    glibcLocales
-    # locale doesn't build yet :-/
-    # locale
-
-    git
-
-    python3
-    # python3Full
-    # python3Packages.sphinx
-    perl
-
-    which
-    wget
-	curl
-    file
-
-    xz
-    xlibs.lndir
-
-    cacert ])
-  ++ (with pkgs.darwin.apple_sdk.frameworks; [ Foundation Security ]);
-}
--- a/.hlint.yaml
+++ b/.hlint.yaml
@@ -1,83 +0,0 @@
-# HLint configuration file
-# https://github.com/ndmitchell/hlint
-##########################
-
-# This file contains a template configuration file, which is typically
-# placed as .hlint.yaml in the root of your project
-
-
-# Warnings currently triggered by your code
- ignore: {name: "Redundant bang pattern"}
- ignore: {name: "Use camelCase"}
- ignore: {name: "Use if"}
- ignore: {name: "Use newtype instead of data"}
- ignore: {name: "Use <$>"}
- ignore: {name: "Use mapMaybe"}
- ignore: {name: "Use const"}
- ignore: {name: "Use list comprehension"}
- ignore: {name: "Redundant multi-way if"}
- ignore: {name: "Redundant lambda"}
- ignore: {name: "Avoid lambda"}
- ignore: {name: "Use uncurry"}
- ignore: {name: "Use replicateM"}
- ignore: {name: "Redundant irrefutable pattern"}
-
-
-# Specify additional command line arguments
-#
-# - arguments: [--color, --cpp-simple, -XQuasiQuotes]
-
-
-# Control which extensions/flags/modules/functions can be used
-#
-# - extensions:
-#   - default: false # all extension are banned by default
-#   - name: [PatternGuards, ViewPatterns] # only these listed extensions can be used
-#   - {name: CPP, within: CrossPlatform} # CPP can only be used in a given module
-#
-# - flags:
-#   - {name: -w, within: []} # -w is allowed nowhere
-#
-# - modules:
-#   - {name: [Data.Set, Data.HashSet], as: Set} # if you import Data.Set qualified, it must be as 'Set'
-#   - {name: Control.Arrow, within: []} # Certain modules are banned entirely
-#
-# - functions:
-#   - {name: unsafePerformIO, within: []} # unsafePerformIO can only appear in no modules
-
-
-# Add custom hints for this project
-#
-# Will suggest replacing "wibbleMany [myvar]" with "wibbleOne myvar"
-# - error: {lhs: "wibbleMany [x]", rhs: wibbleOne x}
-
-# The hints are named by the string they display in warning messages.
-# For example, if you see a warning starting like
-#
-# Main.hs:116:51: Warning: Redundant ==
-#
-# You can refer to that hint with `{name: Redundant ==}` (see below).
-
-# Turn on hints that are off by default
-#
-# Ban "module X(module X) where", to require a real export list
-# - warn: {name: Use explicit module export list}
-#
-# Replace a $ b $ c with a . b $ c
-# - group: {name: dollar, enabled: true}
-#
-# Generalise map to fmap, ++ to <>
-# - group: {name: generalise, enabled: true}
-
-
-# Ignore some builtin hints
-# - ignore: {name: Use let}
-# - ignore: {name: Use const, within: SpecialModule} # Only within certain modules
-
-
-# Define some custom infix operators
-# - fixity: infixr 3 ~^#^~
-
-
-# To generate a suitable file for HLint do:
-# $ hlint --default > .hlint.yaml
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,16 +10,16 @@ jobs:
      language: generic
      env: ARTIFACT=x86_64-apple-darwin-10.14-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
@@ -1,28 +1,22 @@
-#!/bin/sh
+#/bin/sh

 set -ex

+## install ghc via old ghcup
+
 mkdir -p ~/.ghcup/bin
-curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-apple-darwin-ghcup > ~/.ghcup/bin/ghcup
+curl https://gitlab.haskell.org/haskell/ghcup/raw/master/ghcup > ~/.ghcup/bin/ghcup
 chmod +x ~/.ghcup/bin/ghcup

 export PATH="$HOME/.ghcup/bin:$PATH"

-ghcup install 8.10.4
-ghcup install-cabal 3.4.0.0
-ghcup set 8.10.4
+ghcup install 8.8.3
+ghcup install-cabal 3.2.0.0
+ghcup set 8.8.3


 ## install ghcup

 cabal update
-
-(
-       cd /tmp
-       cabal install --installdir="$HOME"/.ghcup/bin hspec-discover
-)
-
-cabal build --constraint="zlib +static" --constraint="lzma +static" -ftui
-cp "$(cabal new-exec --verbose=0 --offline sh -- -c 'command -v ghcup')" .
-strip ./ghcup
-cp ghcup "./${ARTIFACT}"
+cabal build -fcurl
+cp "$(cabal new-exec --verbose=0 --offline sh -- -c 'command -v ghcup')" "./${ARTIFACT}"
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,191 +1,5 @@
 # Revision history for ghcup

-## 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
-
-* 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
-
-* Remove legacy handling of cabal binary and be more graceful about binaries not installed by ghcup (e.g. stack)
-* Fix GHC compilation from git
-* Fix 'ghcup upgrade' on windows
-* Allow to skip update checks via `GHCUP_SKIP_UPDATE_CHECK`
-* Use libarchive on windows as well, fixing unpack errors wrt [#147](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/147)
-
-## 0.1.15.1 -- 2021-06-11
-
-* Add Apple Silicon support
-* Add windows support wrt [#130](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/130)
-* Add stack support
-* Warn when /tmp doesn't have 5GB or more of disk space
-* Allow to compile GHC from git repo wrt [#126](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/126)
-* Allow to set custom ghc version when running 'ghcup compile ghc' wrt [#136](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/136)
-* Add date to GHC bindist names created by ghcup
-
-## 0.1.14.2 -- 2021-05-12
-
-* Remove dead dependency on ascii-string
-
-## 0.1.14.1 -- 2021-04-11
-
-* Make internal symlink target parser more lax, fixes [#119](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/119)
-* Prepare for hackage release
-
-## 0.1.14 -- 2021-03-07
-
-* Major bugfix: fix handling of stray versions wrt [#116](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/116)
-* Fix error messages and overhaul pretty printing wrt [#115](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/115)
-
-## 0.1.13 -- 2021-02-26
-
-* Support ARMv7/AARCH64
-* Add command line completions for installed and available versions wrt [MR #70](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/70)
-* Allow to cycle through set tools wrt [#114](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/114)
-* Fix item selection with unavailable versions wrt [#107](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/107)
-* Allow for dynamic post-install, post-remove and pre-compile msgs wrt [MR #68](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/68)
-* Alert user if upgraded ghcup is shadowed by old ghcup wrt [#111](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/111)
-* Fix to `ghcup` directory creation and placement for the XDG install mode ([MR #49](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/49))
-* Do 755 permissions on executables, wrt #97
-* Add [NO_COLOR](https://no-color.org/) support wrt [MR #47](https://gitlab.haskell.org/haskell/ghcup-hs/-/merge_requests/47)
-
-## 0.1.12 -- 2020-11-21
-
-* Fix disappearing HLS symlinks wrt #91
-* improve TUI:
-  - separators between tools sections
-  - reverse list order so latest is on top
-  - expand the blues selected bar
-  - show new latest versions in bright white
-* allow configuration file and setting TUI hotkeys wrt #41
-  - see https://gitlab.haskell.org/haskell/ghcup-hs#configuration for a more in-depth explanation
-* add a `--set` switch to `ghcup install ghc` to automatically set as default after install
-* emit warnings when CC/LD is set wrt #82
-* add support for version ranges in distro specifiers wrt #84
-  - e.g. `"(>= 19 && <= 20) || ==0.2.2"` is a valid version key for distro
-
-## 0.1.11 -- 2020-09-23
-
-* Add support for installing haskell-language-server, wrt #65
-* When compiling GHC from source create a bindist first, store that bindist in `~/.ghcup/cache` and install it, wrt #51
-* Allow to compile over existing version (`ghcup compile ghc -v 8.6.5 -b 8.6.5`) and replace it wrt #59
-* simplify installing from custom bindist wrt #60
-  - `ghcup install ghc -u <url> <version>`
-* fix bug when cabal isn't marked executable in bindist
-* fix bug when `~/.ghcup` is a valid symlink wrt #49
-* Drop support for compiling cabal from source (the old bootstrap script is discontinued)
-
-## 0.1.10 -- 2020-08-14
-
-* Show stray Cabals (useful for pre-releases or compiled ones)
-
-## 0.1.9 -- 2020-08-14
-
-* Fix bug when uninstalling all cabal versions
-* Fix bug when setting a non-installed ghc version as current default
-* Use yaml instead of generated json for download info for ease of adding new GHC versions #44
-* Allow pre-release versions of GHC/cabal
-* Add XDG dirs support (set `GHCUP_USE_XDG_DIRS`) wrt #39
-* Allow to specify regex for tarball subdir (e.g. `ghc-.*`)
-* Allow installing arbitrary bindists more seamlessly:
-  - e.g. installing GHC HEAD: `ghcup -n install ghc -u '{"dlHash": "", "dlSubdir": { "RegexDir": "ghc-.*"}, "dlUri": "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`
-* Avoid duplicate edits to .bashrc/.zshrc wrt #43
-
-## 0.1.8 -- 2020-07-21
-
-* Fix bug in logging thread dying on newlines
-* Allow to install from arbitrary bindists: `ghcup -n install ghc -u '{"dlHash": "", "dlSubdir": "ghc-8.10.1", "dlUri": "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-x86_64-deb9-linux.tar.xz"}' 8.10.1`
-
-## 0.1.7 -- 2020-07-20
-
-* Fix a bug in libarchive not unpacking some uncleanly packed bindists
-* Improved fish support in bootstrap-haskell
-* Only check for upgrades when not upgrading
-* Fix platform detection for i386 docker images
-* Improve alpine support
-  - more/proper bindists
-  - don't fall back to glibc based bindists
-  - install bindists with `--disable-ld-override` to avoid ld.gold bugs
-
-## 0.1.6 -- 2020-07-13
-
-* Create a new curses (brick) based TUI, accessible via `ghcup tui` #24
-* Support multiple installed versions of cabal #23
-* Improvements to `ghcup list` (show unavailable bindists for platform)
-* Fix redhat downloads #29
-* Support for hadrian bindists (fixes alpine-8.10.1) #31
-* Add FreeBSD bindists 8.6.5 and 8.8.3
-* Fix memory leak during unpack
-
-## 0.1.5 -- 2020-04-30
-
-* Fix errors when PATH variable contains path components that are actually files
-* Add `--version` and `--numeric-version` options
-* Add `changelog` command
-* Also check for available GHC and Cabal updates on start
-* Add base versions as tags for every GHC version (these are "installable" tags and the latest GHC version matching the tag will be picked)
-* Added `--format-raw` to list subcommand
-* Allow to install X.Y versions (e.g.: ghcup install 8.8)
-* Implement `--keep=<always|errors|never>` to control temporary build directories cleanup
-* Add proper shell completions to the repo
-* Fix building of documentation
-* Allow to work in offline mode and use cached files if possible
-* Allow to set the downloader via `--downloader=<curl|wget>`
-* Support for compiling and installing a cross GHC (see README). This is experimental.
-
 ## 0.1.4 -- 2020-04-16

 * build on all platforms with curl (as a binary), wrt https://gitlab.haskell.org/haskell/ghcup-hs/issues/6
--- a/42
+++ b/42
@@ -0,0 +1,42 @@
+FROM alpine:edge
+
+# ghc and cabal
+RUN apk add --no-cache \
+	curl \
+	gcc \
+	g++ \
+	gmp-dev \
+	ncurses-dev \
+	libffi-dev \
+	make \
+	xz \
+	tar \
+	perl \
+	\
+	cabal \
+	ghc
+
+# utils
+RUN apk add --no-cache \
+	bash
+
+## Package specific
+RUN apk add --no-cache \
+	zlib \
+	zlib-dev \
+	zlib-static \
+	gmp \
+	gmp-dev \
+	openssl-dev \
+	openssl-libs-static \
+	xz \
+	xz-dev
+
+RUN cabal v2-update
+
+COPY . /app
+
+WORKDIR /app
+
+RUN chmod +x /app/docker/build.sh
+
--- a/HACKING.md
+++ b/HACKING.md
@@ -0,0 +1,45 @@
+# 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 filepath or directory
+
+Filepath and directory have two fundamental problems: 1. they use String as filepath (see [AFPP](https://gitlab.haskell.org/ghc/ghc/-/wikis/proposal/abstract-file-path) as to why this is wrong) and 2. they try very hard to be cross-platform at the expense of low-level correctness. Instead, we use the [hpath](https://github.com/hasufell/hpath) libraries for file and filepath related stuff, which also gives us stronger filepath types.
+
+### 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
--- a/README.md
+++ b/README.md
@@ -1,11 +1,153 @@
-## The GHCup Haskell installer
+`ghcup` makes it easy to install specific versions of `ghc` on GNU/Linux,
+macOS (aka Darwin) and FreeBSD 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/).
+*Ubuntu users may prefer [hvr's ppa](https://launchpad.net/~hvr/+archive/ubuntu/ghc).*

-Visit the [documentation](https://www.haskell.org/ghcup/) for installation instructions.
+## Table of Contents
+
+   * [Installation](#installation)
+   * [Usage](#usage)
+     * [Manpages](#manpages)
+   * [Design goals](#design-goals)
+   * [How](#how)
+   * [Known users](#known-users)
+   * [Known problems](#known-problems)
+   * [FAQ](#faq)
+
+## 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"
+```
+
+## Usage
+
+See `ghcup --help`.
+
+Common use cases are:
+
+```sh
+# list available ghc/cabal versions
+ghcup list
+
+# install the recommended GHC version
+ghcup install
+
+# install a specific GHC version
+ghcup install 8.2.2
+
+# set the currently "active" GHC version
+ghcup set 8.4.4
+
+# install cabal-install
+ghcup install-cabal
+
+# update ghcup itself
+ghcup upgrade
+```
+
+Generally this is meant to be used 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.
+
+### 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.
+
+### Bash-completion
+
+Depending on your distro and setup, install `.bash-completion` from this repo
+as e.g. `/etc/bash_completion.d/ghcup` and make sure your bashrc sources the
+startup script (`/usr/share/bash-completion/bash_completion` on some distros).
+
+## 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
+
+* [vabal](https://github.com/Franciman/vabal)
+
+## Known problems
+
+### 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?
+
+Consider using [Chocolatey](https://chocolatey.org/search?q=ghc) or [ghcups](https://github.com/kakkun61/ghcups).
+
+3. Why the haskell reimplementation?
+
+Why not?
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -0,0 +1,11 @@
+# RELEASING
+
+1. update `GHCup.Version` module. `ghcupURL` must only be updated if we change the `_toolRequirements` type or the JSON representation of it. The version of the json represents the change increments. `ghcUpVer` is the current application version.
+
+2. Add/fix downloads to `GHCupDownloads` module, then run `ghcup-gen gen` to generate the new json and validate it via `ghcup-gen check`.
+
+3. Commit and git push with tag. Wait for tests to succeed.
+
+4. Upload the new `ghcup-<ver>.json` to `webhost.haskell.org/ghcup/data/`.
+
+5. Build ghcup releases for Linux (fully static), mac (with `-fcurl`) and FreeBSD (with `-fcurl`). Upload to `webhost.haskell.org/ghcup/bin/` and update symlinks.
--- a/docs/TODO.md
+++ b/docs/TODO.md
@@ -2,19 +2,20 @@

 ## Now

-* ghcup init?
-* merge two download files
-* fetch/unpack functionality
+* try to run exe before upgrade (backup to ~/.ghcup/bin/ghcup.old)
+* allow to build 8.8
+* curl DL does not cache json
+* explain environment variables
+* add --keep=<always|error> option
+
+* allow to switch to curl/wget at runtime
+
+* cross support
 * installing multiple versions of the same
-* post-install

 * proper test suite
+* add more logging

-* !! update of 0.1.5 must go in ghcup-0.0.1.json !!
-
-* try to run exe before upgrade (backup to ~/.ghcup/bin/ghcup.old)
-* stdout flushing?
-* resume support (for make-install only)

 ## Maybe

--- a/app/ghcup-gen/Main.hs
+++ b/app/ghcup-gen/Main.hs
@@ -10,42 +10,65 @@

 module Main where

+import           GHCup.Data.GHCupInfo
 import           GHCup.Types
-import           GHCup.Errors
-import           GHCup.Platform
-import           GHCup.Utils.Dirs
-import           GHCup.Utils.Logger
 import           GHCup.Types.JSON               ( )
+import           GHCup.Utils.Logger

-import           Control.Monad.Trans.Reader     ( runReaderT )
-import           Control.Monad.IO.Class
-import           Data.Char                      ( toLower )
-import           Data.Maybe
+import           Data.Aeson                     ( eitherDecode, encode )
+import           Data.Aeson.Encode.Pretty
 #if !MIN_VERSION_base(4,13,0)
 import           Data.Semigroup                 ( (<>) )
 #endif
 import           Options.Applicative     hiding ( style )
-import           Haskus.Utils.Variant.Excepts
 import           System.Console.Pretty
-import           System.Environment
 import           System.Exit
-import           System.IO                      ( stderr )
-import           Text.Regex.Posix
+import           System.IO                      ( stdout )
 import           Validate
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )

-import qualified Data.Text.IO                  as T
-import qualified Data.Text                     as T
 import qualified Data.ByteString               as B
-import qualified Data.YAML.Aeson               as Y
+import qualified Data.ByteString.Lazy          as L


 data Options = Options
  { optCommand :: Command
  }

-data Command = ValidateYAML ValidateYAMLOpts
-             | ValidateTarballs ValidateYAMLOpts TarballFilter
+data Command = GenJSON GenJSONOpts
+             | ValidateJSON ValidateJSONOpts
+             | ValidateTarballs ValidateJSONOpts
+
+data Output
+  = FileOutput FilePath -- optsparse-applicative doesn't handle ByteString correctly anyway
+  | StdOutput
+
+fileOutput :: Parser Output
+fileOutput =
+  FileOutput
+    <$> (strOption
+          (long "file" <> short 'f' <> metavar "FILENAME" <> help
+            "Output to a file"
+          )
+        )
+
+stdOutput :: Parser Output
+stdOutput = flag'
+  StdOutput
+  (short 'o' <> long "stdout" <> help "Print to stdout (default)")
+
+outputP :: Parser Output
+outputP = fileOutput <|> stdOutput
+
+
+data GenJSONOpts = GenJSONOpts
+  { output :: Maybe Output
+  , pretty :: Bool
+  }
+
+genJSONOpts :: Parser GenJSONOpts
+genJSONOpts = GenJSONOpts <$> optional outputP <*> switch
+  (short 'p' <> long "pretty" <> help "Make JSON output pretty (human readable)"
+  )


 data Input
@@ -55,10 +78,11 @@ data Input
 fileInput :: Parser Input
 fileInput =
  FileInput
-    <$> strOption
+    <$> (strOption
          (long "file" <> short 'f' <> metavar "FILENAME" <> help
            "Input file to validate"
          )
+        )

 stdInput :: Parser Input
 stdInput = flag'
@@ -68,90 +92,82 @@ stdInput = flag'
 inputP :: Parser Input
 inputP = fileInput <|> stdInput

-data ValidateYAMLOpts = ValidateYAMLOpts
-  { vInput :: Maybe Input
+data ValidateJSONOpts = ValidateJSONOpts
+  { input :: 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
-
+validateJSONOpts :: Parser ValidateJSONOpts
+validateJSONOpts = ValidateJSONOpts <$> optional inputP

 opts :: Parser Options
 opts = Options <$> com

 com :: Parser Command
 com = subparser
-  (  command
+  (  (command
+       "gen"
+       (   GenJSON
+       <$> (info (genJSONOpts <**> helper)
+                 (progDesc "Generate the json downloads file")
+           )
+       )
+     )
+  <> (command
       "check"
-       (   ValidateYAML
-       <$> info (validateYAMLOpts <**> helper)
-                (progDesc "Validate the YAML")
+       (   ValidateJSON
+       <$> (info (validateJSONOpts <**> helper)
+                 (progDesc "Validate the JSON")
+           )
       )
-  <> command
+     )
+  <> (command
       "check-tarballs"
-       (info
-         ((ValidateTarballs <$> validateYAMLOpts <*> tarballFilterP) <**> helper)
-         (progDesc "Validate all tarballs (download and checksum)")
+       (   ValidateTarballs
+       <$> (info
+             (validateJSONOpts <**> helper)
+             (progDesc "Validate all tarballs (download and checksum)")
+           )
       )
+     )
  )



 main :: IO ()
 main = do
-  no_color <- isJust <$> lookupEnv "NO_COLOR"
-  let loggerConfig = LoggerConfig { lcPrintDebug  = True
-                                  , consoleOutter = T.hPutStr stderr
-                                  , fileOutter    = \_ -> pure ()
-                                  , fancyColors   = not no_color
-                                  }
-  dirs <- liftIO getAllDirs
-  let leanAppstate = LeanAppState (Settings True False Never Curl True GHCupURL False GPGNone False) dirs defaultKeyBindings loggerConfig
-
-  pfreq <- (
-    flip runReaderT leanAppstate . runE @'[NoCompatiblePlatform, NoCompatibleArch, DistroNotFound] $ platformRequest
-    ) >>= \case
-            VRight r -> pure r
-            VLeft e -> do
-              flip runReaderT leanAppstate $ logError $ T.pack $ prettyShow e
-              liftIO $ exitWith (ExitFailure 2)
-
-  let appstate = AppState (Settings True False Never Curl True GHCupURL False GPGNone False) dirs defaultKeyBindings (GHCupInfo mempty mempty mempty) pfreq loggerConfig
-
-  _ <- customExecParser (prefs showHelpOnError) (info (opts <**> helper) idm)
+  customExecParser (prefs showHelpOnError) (info (opts <**> helper) idm)
    >>= \Options {..} -> case optCommand of
-          ValidateYAML vopts -> withValidateYamlOpts vopts (\dl m -> flip runReaderT appstate $ validate dl m)
-          ValidateTarballs vopts tarballFilter -> withValidateYamlOpts vopts (\dl m -> flip runReaderT appstate $ validateTarballs tarballFilter dl m)
+          GenJSON gopts -> do
+            let bs True =
+                  encodePretty' (defConfig { confIndent = Spaces 2 }) ghcupInfo
+                bs False = encode ghcupInfo
+            case gopts of
+              GenJSONOpts { output = Nothing, pretty } ->
+                L.hPutStr stdout (bs pretty)
+              GenJSONOpts { output = Just StdOutput, pretty } ->
+                L.hPutStr stdout (bs pretty)
+              GenJSONOpts { output = Just (FileOutput file), pretty } ->
+                L.writeFile file (bs pretty)
+          ValidateJSON vopts -> case vopts of
+            ValidateJSONOpts { input = Nothing } ->
+              L.getContents >>= valAndExit validate
+            ValidateJSONOpts { input = Just StdInput } ->
+              L.getContents >>= valAndExit validate
+            ValidateJSONOpts { input = Just (FileInput file) } ->
+              L.readFile file >>= valAndExit validate
+          ValidateTarballs vopts -> case vopts of
+            ValidateJSONOpts { input = Nothing } ->
+              L.getContents >>= valAndExit validateTarballs
+            ValidateJSONOpts { input = Just StdInput } ->
+              L.getContents >>= valAndExit validateTarballs
+            ValidateJSONOpts { input = Just (FileInput file) } ->
+              L.readFile file >>= valAndExit validateTarballs
  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.decode1Strict contents of
+    (GHCupInfo _ av) <- case eitherDecode contents of
      Right r -> pure r
-      Left  (_, e) -> die (color Red $ show e)
-    f av gt
+      Left  e -> die (color Red $ show e)
+    myLoggerT (LoggerConfig True (B.hPut stdout) (\_ -> pure ())) (f av)
      >>= exitWith
--- a/app/ghcup-gen/Validate.hs
+++ b/app/ghcup-gen/Validate.hs
@@ -1,46 +1,35 @@
-{-# LANGUAGE CPP              #-}
-{-# LANGUAGE DataKinds        #-}
+{-# LANGUAGE TemplateHaskell  #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE QuasiQuotes      #-}
-{-# LANGUAGE TemplateHaskell  #-}
-{-# LANGUAGE TypeApplications #-}
-{-# LANGUAGE ViewPatterns     #-}
-{-# LANGUAGE OverloadedStrings #-}

 module Validate where

 import           GHCup
 import           GHCup.Download
-import           GHCup.Errors
 import           GHCup.Types
-import           GHCup.Types.Optics
-import           GHCup.Utils
 import           GHCup.Utils.Logger
-import           GHCup.Utils.Version.QQ

-import           Codec.Archive
-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
@@ -58,14 +47,13 @@ addError = do
  liftIO $ modifyIORef ref (+ 1)


-validate :: (Monad m, MonadReader env m, HasLog env, MonadThrow m, MonadIO m, MonadUnliftIO m)
+validate :: (Monad m, MonadLogger m, MonadThrow m, MonadIO m, MonadUnliftIO m)
         => GHCupDownloads
-         -> M.Map GlobalTool DownloadInfo
         -> m ExitCode
-validate dls _ = do
+validate dls = do
  ref <- liftIO $ newIORef 0

-  -- verify binary downloads --
+  -- * verify binary downloads * --
  flip runReaderT ref $ do
    -- unique tags
    forM_ (M.toList dls) $ \(t, _) -> checkUniqueTags t
@@ -74,7 +62,7 @@ validate dls _ = do
    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)
+          checkHasRequiredPlatforms t v arch (M.keys pspecs)

    checkGHCVerIsValid
    forM_ (M.toList dls) $ \(t, _) -> checkMandatoryTags t
@@ -85,39 +73,23 @@ validate dls _ = do
    if e > 0
      then pure $ ExitFailure e
      else do
-        lift $ logInfo "All good"
+        lift $ $(logInfo) [i|All good|]
        pure ExitSuccess
 where
-  checkHasRequiredPlatforms t v tags arch pspecs = do
+  checkHasRequiredPlatforms t v arch pspecs = do
    let v' = prettyVer v
-        arch' = prettyShow arch
-    when (notElem (Linux UnknownLinux) pspecs) $ do
-      lift $ logError $
-        "Linux UnknownLinux missing for for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack arch'
+    when (not $ any (== 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 $ "Darwin missing for for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack arch'
+    when ((not $ any (== 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 $
-      "FreeBSD missing for for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack arch'
-    when (notElem Windows pspecs && arch == A_64) $ do
-      lift $ logError $ "Windows missing for for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack 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 $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch)) >> addError
-        Cabal | v > [vver|2.4.1.0|]
-              , arch `elem` [A_64, A_32] -> lift (logError $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch)) >> addError
-        GHC | Latest `elem` tags || Recommended `elem` tags
-            , arch `elem` [A_64, A_32] -> lift (logError $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch))
-        _ -> lift $ logWarn $ "Linux Alpine missing for " <> T.pack (prettyShow t) <> " " <> v' <> " " <> T.pack (prettyShow arch)
+    when ((not $ any (== FreeBSD) pspecs) && arch == A_64) $ lift $ $(logWarn)
+      [i|FreeBSD missing for #{t} #{v'} #{arch}|]

  checkUniqueTags tool = do
-    let allTags = join $ fmap _viTags $ M.elems $ availableToolVersions dls tool
+    let allTags = join $ M.elems $ availableToolVersions dls tool
    let nonUnique =
          fmap fst
            .   filter (\(_, b) -> not b)
@@ -125,7 +97,7 @@ validate dls _ = do
                    (\case
                      [] -> throwM $ InternalError "empty inner list"
                      (t : ts) ->
-                        pure $ (t, ) (not (isUniqueTag t) || null ts)
+                        pure $ (t, ) $ if isUniqueTag t then ts == [] else True
                    )
                . group
                . sort
@@ -134,13 +106,11 @@ validate dls _ = do
    case join nonUnique of
      [] -> pure ()
      xs -> do
-        lift $ logError $ "Tags not unique for " <> T.pack (prettyShow tool) <> ": " <> T.pack (prettyShow xs)
+        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

@@ -150,131 +120,80 @@ validate dls _ = do
      case [ x | (x,"") <- readP_to_S V.parseVersion (T.unpack . prettyVer $ v) ] of
        [_] -> pure ()
        _   -> do
-          lift $ logError $ "GHC version " <> prettyVer v <> " is not valid"
+          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 $ fmap _viTags $ M.elems $ availableToolVersions dls tool
+    let allTags = join $ M.elems $ availableToolVersions dls tool
    forM_ [Latest, Recommended] $ \t -> case elem t allTags of
      False -> do
-        lift $ logError $ "Tag " <> T.pack (prettyShow t) <> " missing from " <> T.pack (prettyShow tool)
+        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, _viTags -> tags) -> case any isBase tags of
+    forM allTags $ \(ver, tags) -> case any isBase tags of
      False -> do
-        lift $ logError $ "Base tag missing from GHC ver " <> prettyVer ver
+        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
-                    , MonadReader env m
-                    , HasLog env
-                    , HasDirs env
-                    , HasSettings env
+                    , MonadLogger m
                    , MonadThrow m
                    , MonadIO m
                    , MonadUnliftIO m
                    , MonadMask m
-                    , Alternative m
-                    , MonadFail m
                    )
-                 => TarballFilter
-                 -> GHCupDownloads
-                 -> M.Map GlobalTool DownloadInfo
+                 => GHCupDownloads
                 -> m ExitCode
-validateTarballs (TarballFilter etool versionRegex) dls gt = do
+validateTarballs dls = do
  ref <- liftIO $ newIORef 0

-   -- 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 "no tarballs selected by filter" *> (flip runReaderT ref addError)
-  forM_ allDls (downloadAll ref)
+  flip runReaderT ref $ do
+     -- download/verify all binary tarballs
+    let
+      dlbis = nub $ join $ (M.elems dls) <&> \versions ->
+        join $ (M.elems versions) <&> \vi ->
+          join $ (M.elems $ _viArch vi) <&> \pspecs ->
+            join $ (M.elems pspecs) <&> \pverspecs -> (M.elems pverspecs)
+    forM_ dlbis $ downloadAll

-  -- exit
-  e <- liftIO $ readIORef ref
-  if e > 0
-    then pure $ ExitFailure e
-    else do
-      logInfo "All good"
-      pure ExitSuccess
+    let dlsrc = nub $ join $ (M.elems dls) <&> \versions ->
+          join $ (M.elems versions) <&> maybe [] (: []) . _viSourceDL
+    forM_ dlsrc $ downloadAll
+
+    -- exit
+    e <- liftIO $ readIORef ref
+    if e > 0
+      then pure $ ExitFailure e
+      else do
+        lift $ $(logInfo) [i|All good|]
+        pure ExitSuccess

 where
-  downloadAll :: ( MonadUnliftIO m
-                 , MonadIO m
-                 , MonadReader env m
-                 , HasLog env
-                 , HasDirs env
-                 , HasSettings env
-                 , MonadCatch m
-                 , MonadMask m
-                 , MonadThrow m
-                 )
-              => IORef Int
-              -> DownloadInfo
-              -> m ()
-  downloadAll ref dli = do
-    r <- runResourceT
-      . runE @'[DigestError
-               , GPGError
-               , DownloadFailed
-               , UnknownArchive
-               , ArchiveResult
-               ]
-      $ do
-        case etool of
-          Right (Just GHCup) -> do
-            tmpUnpack <- lift mkGhcupTmpDir
-            _ <- liftE $ download (_dlUri dli) Nothing (Just (_dlHash dli)) tmpUnpack Nothing False
-            pure Nothing
-          Right _ -> do
-            p <- liftE $ downloadCached dli Nothing
-            fmap (Just . head . splitDirectories . head)
-              . liftE
-              . getArchiveFiles
-              $ p
-          Left ShimGen -> do
-            tmpUnpack <- lift mkGhcupTmpDir
-            _ <- liftE $ download (_dlUri dli) Nothing (Just (_dlHash dli)) tmpUnpack Nothing False
-            pure Nothing
+  downloadAll dli = do
+    let settings = Settings True False Never
+    let runLogger = myLoggerT LoggerConfig { lcPrintDebug = True
+                                           , colorOutter  = B.hPut stderr
+                                           , rawOutter    = (\_ -> pure ())
+                                           }
+
+    r <-
+      runLogger
+      . flip runReaderT settings
+      . runResourceT
+      . runE
+      $ downloadCached dli Nothing
    case r of
-      VRight (Just basePath) -> do
-        case _dlSubdir dli of
-          Just (RealDir prel) -> do
-            logInfo
-              $ " verifying subdir: " <> T.pack prel
-            when (basePath /= prel) $ do
-              logError $
-                "Subdir doesn't match: expected " <> T.pack prel <> ", got " <> T.pack basePath
-              (flip runReaderT ref addError)
-          Just (RegexDir regexString) -> do
-            logInfo $
-              "verifying subdir (regex): " <> T.pack regexString
-            let regex = makeRegexOpts
-                  compIgnoreCase
-                  execBlank
-                  regexString
-            when (not (match regex basePath)) $ do
-              logError $
-                "Subdir doesn't match: expected regex " <> T.pack regexString <> ", got " <> T.pack basePath
-              (flip runReaderT ref addError)
-          Nothing -> pure ()
-      VRight Nothing -> pure ()
+      VRight _ -> pure ()
      VLeft  e -> do
-        logError $
-          "Could not download (or verify hash) of " <> T.pack (show dli) <> ", Error was: " <> T.pack (prettyShow e)
-        (flip runReaderT ref addError)
+        lift $ $(logError)
+          [i|Could not download (or verify hash) of #{dli}, Error was: #{e}|]
+        addError
--- a/app/ghcup/BrickMain.hs
+++ b/app/ghcup/BrickMain.hs
@@ -1,615 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE ViewPatterns      #-}
-{-# LANGUAGE RankNTypes        #-}
-
-module BrickMain where
-
-import           GHCup
-import           GHCup.Download
-import           GHCup.Errors
-import           GHCup.Types         hiding ( LeanAppState(..) )
-import           GHCup.Utils
-import           GHCup.Utils.Logger
-import           GHCup.Utils.Prelude ( decUTF8Safe )
-import           GHCup.Utils.File
-
-import           Brick
-import           Brick.Widgets.Border
-import           Brick.Widgets.Border.Style
-import           Brick.Widgets.Center
-import           Brick.Widgets.List             ( listSelectedFocusedAttr
-                                                , listSelectedAttr
-                                                , listAttr
-                                                )
-import           Codec.Archive
-import           Control.Exception.Safe
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Except
-import           Control.Monad.Trans.Resource
-import           Data.Bool
-import           Data.Functor
-import           Data.List
-import           Data.Maybe
-import           Data.IORef
-import           Data.Vector                    ( Vector
-                                                , (!?)
-                                                )
-import           Data.Versions           hiding ( str )
-import           Haskus.Utils.Variant.Excepts
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-import           System.IO.Unsafe
-import           Text.PrettyPrint.HughesPJClass ( prettyShow )
-import           URI.ByteString
-
-import qualified Data.Text                     as T
-import qualified Graphics.Vty                  as Vty
-import qualified Data.Vector                   as V
-
-
-hiddenTools :: [Tool]
-hiddenTools = []
-
-
-data BrickData = BrickData
-  { lr    :: [ListResult]
-  }
-  deriving Show
-
-data BrickSettings = BrickSettings
-  { showAllVersions :: Bool
-  , showAllTools    :: Bool
-  }
-  deriving Show
-
-data BrickInternalState = BrickInternalState
-  { clr :: Vector ListResult
-  , ix  :: Int
-  }
-  deriving Show
-
-data BrickState = BrickState
-  { appData     :: BrickData
-  , appSettings :: BrickSettings
-  , appState    :: BrickInternalState
-  , appKeys     :: KeyBindings
-  }
-  deriving Show
-
-
-keyHandlers :: KeyBindings
-            -> [ ( Vty.Key
-                 , BrickSettings -> String
-                 , BrickState -> EventM n (Next BrickState)
-                 )
-               ]
-keyHandlers KeyBindings {..} =
-  [ (bQuit, const "Quit"     , halt)
-  , (bInstall, const "Install"  , withIOAction install')
-  , (bUninstall, const "Uninstall", withIOAction del')
-  , (bSet, const "Set"      , withIOAction ((liftIO .) . set'))
-  , (bChangelog, const "ChangeLog", withIOAction changelog')
-  , ( bShowAllVersions
-    , \BrickSettings {..} ->
-       if showAllVersions then "Don't show all versions" else "Show all versions"
-    , hideShowHandler (not . showAllVersions) showAllTools
-    )
-  , ( bShowAllTools
-    , \BrickSettings {..} ->
-       if showAllTools then "Don't show all tools" else "Show all tools"
-    , hideShowHandler showAllVersions (not . showAllTools)
-    )
-  , (bUp, const "Up", \BrickState {..} -> continue BrickState{ appState = moveCursor 1 appState Up, .. })
-  , (bDown, const "Down", \BrickState {..} -> continue BrickState{ appState = moveCursor 1 appState Down, .. })
-  ]
- where
-  hideShowHandler f p BrickState{..} =
-    let newAppSettings   = appSettings { showAllVersions = f appSettings , showAllTools = p appSettings }
-        newInternalState = constructList appData newAppSettings (Just appState)
-    in  continue (BrickState appData newAppSettings newInternalState appKeys)
-
-
-showKey :: Vty.Key -> String
-showKey (Vty.KChar c) = [c]
-showKey Vty.KUp = "↑"
-showKey Vty.KDown = "↓"
-showKey key = tail (show key)
-
-
-ui :: AttrMap -> BrickState -> Widget String
-ui dimAttrs BrickState{ appSettings = as@BrickSettings{}, ..}
-  = padBottom Max
-      ( withBorderStyle unicode
-        $ borderWithLabel (str "GHCup")
-          (center (header <=> hBorder <=> renderList' appState))
-      )
-    <=> footer
-
- where
-  footer =
-    withAttr "help"
-      . txtWrap
-      . T.pack
-      . foldr1 (\x y -> x <> "  " <> y)
-      . fmap (\(key, s, _) -> showKey key <> ":" <> s as)
-      $ keyHandlers appKeys
-  header =
-    minHSize 2 emptyWidget
-      <+> padLeft (Pad 2) (minHSize 6 $ str "Tool")
-      <+> minHSize 15 (str "Version")
-      <+> padLeft (Pad 1) (minHSize 25 $ str "Tags")
-      <+> padLeft (Pad 5) (str "Notes")
-  renderList' = withDefAttr listAttr . drawListElements renderItem True
-  renderItem _ b listResult@ListResult{..} =
-    let marks = if
-          | lSet       -> (withAttr "set" $ str "✔✔")
-          | lInstalled -> (withAttr "installed" $ str "✓ ")
-          | otherwise  -> (withAttr "not-installed" $ str "✗ ")
-        ver = case lCross of
-          Nothing -> T.unpack . prettyVer $ lVer
-          Just c  -> T.unpack (c <> "-" <> prettyVer lVer)
-        dim
-          | lNoBindist && not lInstalled
-            && not b -- TODO: overloading dim and active ignores active
-                       --       so we hack around it here
-          = updateAttrMap (const dimAttrs) . withAttr "no-bindist"
-          | otherwise  = id
-        hooray
-          | elem Latest lTag && not lInstalled =
-              withAttr "hooray"
-          | otherwise = id
-        active = if b then putCursor "GHCup" (Location (0,0)) . forceAttr "active" else id
-    in  hooray $ active $ dim
-          (   marks
-          <+> padLeft (Pad 2)
-               ( minHSize 6
-                 (printTool lTool)
-               )
-          <+> minHSize 15 (str ver)
-          <+> (let l = catMaybes . fmap printTag $ sort lTag
-               in  padLeft (Pad 1) $ minHSize 25 $ if null l
-                     then emptyWidget
-                     else foldr1 (\x y -> x <+> str "," <+> y) l
-              )
-          <+> padLeft (Pad 5)
-              ( let notes = printNotes listResult
-                in  if null notes
-                      then emptyWidget
-                      else foldr1 (\x y -> x <+> str "," <+> y) notes
-              )
-          <+> vLimit 1 (fill ' ')
-          )
-
-  printTag Recommended    = Just $ withAttr "recommended" $ str "recommended"
-  printTag Latest         = Just $ withAttr "latest" $ str "latest"
-  printTag Prerelease     = Just $ withAttr "prerelease" $ str "prerelease"
-  printTag (Base pvp'')   = Just $ str ("base-" ++ T.unpack (prettyPVP pvp''))
-  printTag Old            = Nothing
-  printTag (UnknownTag t) = Just $ str t
-
-  printTool Cabal = str "cabal"
-  printTool GHC = str "GHC"
-  printTool GHCup = str "GHCup"
-  printTool HLS = str "HLS"
-  printTool Stack = str "Stack"
-
-  printNotes ListResult {..} =
-    (if hlsPowered then [withAttr "hls-powered" $ str "hls-powered"] else mempty
-      )
-      ++ (if fromSrc then [withAttr "compiled" $ str "compiled"] else mempty)
-      ++ (if lStray then [withAttr "stray" $ str "stray"] else mempty)
-
-  -- | Draws the list elements.
-  --
-  -- Evaluates the underlying container up to, and a bit beyond, the
-  -- selected element. The exact amount depends on available height
-  -- for drawing and 'listItemHeight'. At most, it will evaluate up to
-  -- element @(i + h + 1)@ where @i@ is the selected index and @h@ is the
-  -- available height.
-  drawListElements :: (Int -> Bool -> ListResult -> Widget String)
-                   -> Bool
-                   -> BrickInternalState
-                   -> Widget String
-  drawListElements drawElem foc is@(BrickInternalState clr _) =
-    Widget Greedy Greedy $
-      let
-        es = clr
-        listSelected        = fmap fst $ listSelectedElement' is
-
-        drawnElements = flip V.imap es $ \i' e ->
-          let addSeparator w = case es !? (i' - 1) of
-                Just e' | lTool e' /= lTool e ->
-                  hBorder <=> w
-                _                             -> w
-
-              isSelected  = Just i' == listSelected
-              elemWidget  = drawElem i' isSelected e
-              selItemAttr = if foc
-                then withDefAttr listSelectedFocusedAttr
-                else withDefAttr listSelectedAttr
-              makeVisible = if isSelected then visible . selItemAttr else id
-          in  addSeparator $ makeVisible elemWidget
-
-      in render
-        $ viewport "GHCup" Vertical
-        $ vBox
-        $ V.toList drawnElements
-
-
-minHSize :: Int -> Widget n -> Widget n
-minHSize s' = hLimit s' . vLimit 1 . (<+> fill ' ')
-
-
-app :: AttrMap -> AttrMap -> App BrickState e String
-app attrs dimAttrs =
-  App { appDraw         = \st -> [ui dimAttrs st]
-  , appHandleEvent  = eventHandler
-  , appStartEvent   = return
-  , appAttrMap      = const attrs
-  , appChooseCursor = showFirstCursor
-  }
-
-defaultAttributes :: Bool -> AttrMap
-defaultAttributes no_color = attrMap
-  Vty.defAttr
-  [ ("active"       , Vty.defAttr `withBackColor` Vty.blue)
-  , ("not-installed", Vty.defAttr `withForeColor` Vty.red)
-  , ("set"          , Vty.defAttr `withForeColor` Vty.green)
-  , ("installed"    , Vty.defAttr `withForeColor` Vty.green)
-  , ("recommended"  , Vty.defAttr `withForeColor` Vty.green)
-  , ("hls-powered"  , Vty.defAttr `withForeColor` Vty.green)
-  , ("latest"       , Vty.defAttr `withForeColor` Vty.yellow)
-  , ("prerelease"   , Vty.defAttr `withForeColor` Vty.red)
-  , ("compiled"     , Vty.defAttr `withForeColor` Vty.blue)
-  , ("stray"        , Vty.defAttr `withForeColor` Vty.blue)
-  , ("help"         , Vty.defAttr `withStyle`     Vty.italic)
-  , ("hooray"       , Vty.defAttr `withForeColor` Vty.brightWhite)
-  ]
-  where
-    withForeColor | no_color  = const
-                  | otherwise = Vty.withForeColor
-
-    withBackColor | no_color  = \attr _ -> attr `Vty.withStyle` Vty.reverseVideo
-                  | otherwise = Vty.withBackColor
-
-    withStyle                 = Vty.withStyle
-
-dimAttributes :: Bool -> AttrMap
-dimAttributes no_color = attrMap
-  (Vty.defAttr `Vty.withStyle` Vty.dim)
-  [ ("active"    , Vty.defAttr `withBackColor` Vty.blue) -- has no effect ??
-  , ("no-bindist", Vty.defAttr `Vty.withStyle` Vty.dim)
-  ]
-  where
-    withBackColor | no_color  = \attr _ -> attr `Vty.withStyle` Vty.reverseVideo
-                  | otherwise = Vty.withBackColor
-
-eventHandler :: BrickState -> BrickEvent n e -> EventM n (Next BrickState)
-eventHandler st@BrickState{..} ev = do
-  AppState { keyBindings = kb } <- liftIO $ readIORef settings'
-  case ev of
-    (MouseDown _ Vty.BScrollUp _ _) ->
-      continue (BrickState { appState = moveCursor 1 appState Up, .. })
-    (MouseDown _ Vty.BScrollDown _ _) ->
-      continue (BrickState { appState = moveCursor 1 appState Down, .. })
-    (VtyEvent (Vty.EvResize _ _)) -> continue st
-    (VtyEvent (Vty.EvKey Vty.KUp _)) ->
-      continue BrickState{ appState = moveCursor 1 appState Up, .. }
-    (VtyEvent (Vty.EvKey Vty.KDown _)) ->
-      continue BrickState{ appState = moveCursor 1 appState Down, .. }
-    (VtyEvent (Vty.EvKey key _)) ->
-      case find (\(key', _, _) -> key' == key) (keyHandlers kb) of
-        Nothing -> continue st
-        Just (_, _, handler) -> handler st
-    _ -> continue st
-
-
-moveCursor :: Int -> BrickInternalState -> Direction -> BrickInternalState
-moveCursor steps ais@BrickInternalState{..} direction =
-  let newIx = if direction == Down then ix + steps else ix - steps
-  in  case clr !? newIx of
-        Just _  -> BrickInternalState { ix = newIx, .. }
-        Nothing -> ais
-
-
-- | Suspend the current UI and run an IO action in terminal. If the
-- IO action returns a Left value, then it's thrown as userError.
-withIOAction :: (BrickState
-                 -> (Int, ListResult)
-                 -> ReaderT AppState IO (Either String a))
-             -> BrickState
-             -> EventM n (Next BrickState)
-withIOAction action as = case listSelectedElement' (appState as) of
-  Nothing      -> continue as
-  Just (ix, e) -> do
-    suspendAndResume $ do
-      settings <- readIORef settings'
-      flip runReaderT settings $ action as (ix, e) >>= \case
-        Left  err -> liftIO $ putStrLn ("Error: " <> err)
-        Right _   -> liftIO $ putStrLn "Success"
-      getAppData Nothing >>= \case
-        Right data' -> do
-          putStrLn "Press enter to continue"
-          _ <- getLine
-          pure (updateList data' as)
-        Left err -> throwIO $ userError err
-
-
-- | Update app data and list internal state based on new evidence.
-- This synchronises @BrickInternalState@ with @BrickData@
-- and @BrickSettings@.
-updateList :: BrickData -> BrickState -> BrickState
-updateList appD BrickState{..} =
-  let newInternalState = constructList appD appSettings (Just appState)
-  in  BrickState { appState    = newInternalState
-                 , appData     = appD
-                 , appSettings = appSettings
-                 , appKeys     = appKeys
-                 }
-
-
-constructList :: BrickData
-              -> BrickSettings
-              -> Maybe BrickInternalState
-              -> BrickInternalState
-constructList appD appSettings =
-  replaceLR (filterVisible (showAllVersions appSettings)
-                           (showAllTools appSettings))
-            (lr appD)
-
-listSelectedElement' :: BrickInternalState -> Maybe (Int, ListResult)
-listSelectedElement' BrickInternalState{..} = fmap (ix, ) $ clr !? ix
-
-
-selectLatest :: Vector ListResult -> Int
-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
-- and a new @[ListResult]@ evidence.
-- When passed an existing @appState@, tries to keep the selected element.
-replaceLR :: (ListResult -> Bool)
-          -> [ListResult]
-          -> Maybe BrickInternalState
-          -> BrickInternalState
-replaceLR filterF lr s =
-  let oldElem = s >>= listSelectedElement'
-      newVec  = V.fromList . filter filterF $ lr
-      newSelected =
-        case oldElem >>= \(_, oldE) -> V.findIndex (toolEqual oldE) newVec of
-          Just ix -> ix
-          Nothing -> selectLatest newVec
-  in  BrickInternalState newVec newSelected
- where
-  toolEqual e1 e2 =
-    lTool e1 == lTool e2 && lVer e1 == lVer e2 && lCross e1 == lCross e2
-
-
-filterVisible :: Bool -> Bool -> ListResult -> Bool
-filterVisible v t e | lInstalled e = True
-                    | v
-                    , not t
-                    , not (elem (lTool e) hiddenTools) = True
-                    | not v
-                    , t
-                    , not (elem Old (lTag e)) = True
-                    | v
-                    , t = True
-                    | 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)
-         => BrickState
-         -> (Int, ListResult)
-         -> m (Either String ())
-install' _ (_, ListResult {..}) = do
-  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask
-
-  let run =
-        runResourceT
-          . runE
-            @'[ AlreadyInstalled
-              , ArchiveResult
-              , UnknownArchive
-              , FileDoesNotExistError
-              , CopyError
-              , NoDownload
-              , NotInstalled
-              , BuildFailed
-              , TagNotFound
-              , DigestError
-              , GPGError
-              , DownloadFailed
-              , DirNotEmpty
-              , NoUpdate
-              , TarDirDoesNotExist
-              , FileAlreadyExistsError
-              , ProcessError
-              ]
-
-  run (do
-      case lTool of
-        GHC   -> do
-          let vi = getVersionInfo lVer GHC dls
-          liftE $ installGHCBin lVer Nothing False $> vi
-        Cabal -> do
-          let vi = getVersionInfo lVer Cabal dls
-          liftE $ installCabalBin lVer Nothing False $> vi
-        GHCup -> do
-          let vi = snd <$> getLatest dls GHCup
-          liftE $ upgradeGHCup Nothing False $> vi
-        HLS   -> do
-          let vi = getVersionInfo lVer HLS dls
-          liftE $ installHLSBin lVer Nothing False $> vi
-        Stack -> do
-          let vi = getVersionInfo lVer Stack dls
-          liftE $ installStackBin lVer Nothing False $> vi
-    )
-    >>= \case
-          VRight vi                         -> do
-            forM_ (_viPostInstall =<< vi) $ \msg ->
-              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"
-
-
-set' :: BrickState -> (Int, ListResult) -> IO (Either String ())
-set' _ (_, ListResult {..}) = do
-  settings <- readIORef settings'
-
-  let run =
-        flip runReaderT settings
-          . runE @'[FileDoesNotExistError , NotInstalled , TagNotFound]
-
-  run (do
-      case lTool of
-        GHC   -> liftE $ setGHC (GHCTargetVersion lCross lVer) SetGHCOnly $> ()
-        Cabal -> liftE $ setCabal lVer $> ()
-        HLS   -> liftE $ setHLS lVer $> ()
-        Stack -> liftE $ setStack lVer $> ()
-        GHCup -> pure ()
-    )
-    >>= \case
-          VRight _ -> pure $ Right ()
-          VLeft  e -> pure $ Left (prettyShow e)
-
-
-del' :: (MonadReader AppState m, MonadIO m, MonadFail m, MonadMask m, MonadUnliftIO m)
-     => BrickState
-     -> (Int, ListResult)
-     -> m (Either String ())
-del' _ (_, ListResult {..}) = do
-  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask
-
-  let run = runE @'[NotInstalled]
-
-  run (do
-      let vi = getVersionInfo lVer lTool dls
-      case lTool of
-        GHC   -> liftE $ rmGHCVer (GHCTargetVersion lCross lVer) $> vi
-        Cabal -> liftE $ rmCabalVer lVer $> vi
-        HLS   -> liftE $ rmHLSVer lVer $> vi
-        Stack -> liftE $ rmStackVer lVer $> vi
-        GHCup -> pure Nothing
-    )
-    >>= \case
-          VRight vi -> do
-            forM_ (join $ fmap _viPostRemove vi) $ \msg ->
-              logInfo msg
-            pure $ Right ()
-          VLeft  e -> pure $ Left (prettyShow e)
-
-
-changelog' :: (MonadReader AppState m, MonadIO m)
-           => BrickState
-           -> (Int, ListResult)
-           -> m (Either String ())
-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)
-    Just uri -> do
-      let cmd = case _rPlatform pfreq of
-            Darwin  -> "open"
-            Linux _ -> "xdg-open"
-            FreeBSD -> "xdg-open"
-            Windows -> "start"
-      exec cmd [T.unpack $ decUTF8Safe $ serializeURIRef' uri] Nothing Nothing >>= \case
-        Right _ -> pure $ Right ()
-        Left  e -> pure $ Left $ prettyShow e
-
-
-settings' :: IORef AppState
-{-# NOINLINE settings' #-}
-settings' = unsafePerformIO $ do
-  dirs <- getAllDirs
-  let loggerConfig = LoggerConfig { lcPrintDebug  = False
-                                  , consoleOutter = \_ -> pure ()
-                                  , fileOutter    = \_ -> pure ()
-                                  , fancyColors   = True
-                                  }
-  newIORef $ AppState (Settings { cache      = True
-                                , noVerify   = False
-                                , keepDirs   = Never
-                                , downloader = Curl
-                                , verbose    = False
-                                , urlSource  = GHCupURL
-                                , noNetwork  = False
-                                , gpgSetting = GPGNone
-                                , noColor    = False
-                                , ..
-                                })
-                      dirs
-                      defaultKeyBindings
-                      (GHCupInfo mempty mempty mempty)
-                      (PlatformRequest A_64 Darwin Nothing)
-                      loggerConfig
-
-
-
-brickMain :: AppState
-          -> IO ()
-brickMain s = do
-  writeIORef settings' s
-
-  eAppData <- getAppData (Just $ ghcupInfo s)
-  case eAppData of
-    Right ad ->
-      defaultMain
-          (app (defaultAttributes (noColor $ settings s)) (dimAttributes (noColor $ settings s)))
-          (BrickState ad
-                    defaultAppSettings
-                    (constructList ad defaultAppSettings Nothing)
-                    (keyBindings (s :: AppState))
-
-          )
-        $> ()
-    Left e -> do
-      flip runReaderT s $ logError $ "Error building app state: " <> T.pack (show e)
-      exitWith $ ExitFailure 2
-
-
-defaultAppSettings :: BrickSettings
-defaultAppSettings = BrickSettings { showAllVersions = False, showAllTools = False }
-
-
-getGHCupInfo :: IO (Either String GHCupInfo)
-getGHCupInfo = do
-  settings <- readIORef settings'
-
-  r <-
-    flip runReaderT settings
-    . runE @'[DigestError, GPGError, JSONError , DownloadFailed , FileDoesNotExistError]
-    $ liftE
-    $ getDownloadsF
-
-  case r of
-    VRight a -> pure $ Right a
-    VLeft  e -> pure $ Left (prettyShow e)
-
-
-getAppData :: Maybe GHCupInfo
-           -> IO (Either String BrickData)
-getAppData mgi = runExceptT $ do
-  r <- ExceptT $ maybe getGHCupInfo (pure . Right) mgi
-  liftIO $ modifyIORef settings' (\s -> s { ghcupInfo = r })
-  settings <- liftIO $ readIORef settings'
-
-  flip runReaderT settings $ do
-    lV <- listVersions Nothing Nothing
-    pure $ BrickData (reverse lV)
-
--- a/app/ghcup/GHCup/OptParse.hs
+++ b/app/ghcup/GHCup/OptParse.hs
@@ -1,309 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# 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
-  , module GHCup.OptParse.Upgrade
-  , 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
-) where
-
-
-import           GHCup.OptParse.Common
-import           GHCup.OptParse.Install
-import           GHCup.OptParse.Set
-import           GHCup.OptParse.UnSet
-import           GHCup.OptParse.Rm
-import           GHCup.OptParse.Compile
-import           GHCup.OptParse.Config
-import           GHCup.OptParse.Whereis
-import           GHCup.OptParse.List
-import           GHCup.OptParse.Upgrade
-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
-  , 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
-  | Upgrade UpgradeOpts Bool
-  | ToolRequirements
-  | ChangeLog ChangeLogOptions
-  | Nuke
-#if defined(BRICK)
-  | Interactive
-#endif
-  | Prefetch PrefetchCommand
-  | GC GCOptions
-
-
-
-opts :: Parser Options
-opts =
-  Options
-    <$> invertableSwitch "verbose" 'v' False (help "Enable verbosity (default: disabled)")
-    <*> invertableSwitch "cache" 'c' False (help "Cache downloads in ~/.ghcup/cache (default: disabled)")
-    <*> (optional
-          (option
-            (eitherReader parseUri)
-            (  short 's'
-            <> long "url-source"
-            <> metavar "URL"
-            <> help "Alternative ghcup download info url"
-            <> internal
-            )
-          )
-        )
-    <*> (fmap . fmap) not (invertableSwitch "verify" '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
-          ))
-    <*> optional (option
-          (eitherReader downloaderParser)
-          (  long "downloader"
-#if defined(INTERNAL_DOWNLOADER)
-          <> metavar "<internal|curl|wget>"
-          <> help
-          "Downloader to use (default: internal)"
-#else
-          <> metavar "<curl|wget>"
-          <> help
-          "Downloader to use (default: curl)"
-#endif
-          <> hidden
-          ))
-    <*> invertableSwitch "offline" '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)"
-          ))
-    <*> 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 <$> listOpts <**> helper)
-                 (progDesc "Show available GHCs and other tools")
-           )
-      <> command
-           "upgrade"
-           (info
-             (    (Upgrade <$> upgradeOptsP <*> switch
-                    (short 'f' <> long "force" <> help "Force update")
-                  )
-             <**> helper
-             )
-             (progDesc "Upgrade ghcup")
-           )
-      <> 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 ))
-           )
-      <> commandGroup "Main commands:"
-      )
-    <|> subparser
-          (  command
-              "debug-info"
-              ((\_ -> DInfo) <$> info helper (progDesc "Show debug info"))
-          <> command
-               "tool-requirements"
-               (   (\_ -> ToolRequirements)
-               <$> info 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 OverloadedStrings #-}
-{-# 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)"
-            )
-          )
-    <*> 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
@@ -1,520 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-
-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.Logger
-import           GHCup.Utils.MegaParsec
-import           GHCup.Utils.Prelude
-
-import           Control.Exception.Safe
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Data.Bifunctor
-import           Data.Char
-import           Data.Either
-import           Data.Functor
-import           Data.List                      ( nub, sort, sortBy )
-import           Data.Maybe
-import           Data.Text                      ( Text )
-import           Data.Versions           hiding ( str )
-import           Data.Void
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           Safe
-import           System.FilePath
-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 GHCup.Version
-
-
-    -------------
-    --[ 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
-    -> 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")
-    -> 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 short shortopt)
-    <|> flag' False (dismod <> long nolongopt <> if defv then 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" $> A_32)
-  platformP :: MP.Parsec Void Text PlatformRequest
-  platformP = choice'
-    [ (\a mv -> PlatformRequest a FreeBSD mv)
-    <$> (archP <* MP.chunk "-")
-    <*> (  MP.chunk "portbld"
-        *> (   MP.try (Just <$> verP (MP.chunk "-freebsd" <* MP.eof))
-           <|> pure Nothing
-           )
-        <* MP.chunk "-freebsd"
-        )
-    , (\a mv -> PlatformRequest a Darwin mv)
-    <$> (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
-    ]
-
-
-bindistParser :: String -> Either String URI
-bindistParser = 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')
-
-
-toolVersionParser :: Parser ToolVersion
-toolVersionParser = verP' <|> toolP
- where
-  verP' = ToolVersion <$> versionParser
-  toolP =
-    ToolTag
-      <$> option
-            (eitherReader tagEither)
-            (short 't' <> long "tag" <> metavar "TAG" <> help "The target tag")
-
-
-
-
-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 ]--
-    ------------------
-
-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
-        (Settings True False Never Curl False GHCupURL True GPGNone False)
-        dirs'
-        defaultKeyBindings
-        loggerConfig
-
-  mGhcUpInfo <- flip runReaderT appState . runE $ getDownloadsF
-  case mGhcUpInfo of
-    VRight ghcupInfo -> do
-      let allTags = filter (\t -> t /= Old)
-            $ join
-            $ fmap _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 = Settings True False Never Curl False GHCupURL True GPGNone False
-  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
-
-
-
-
-    -----------------
-    --[ 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
-  (\(x, y) -> (mkTVer x, Just y)) <$> 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
-  (\(x, y) -> (mkTVer x, Just y)) <$> getLatest dls tool ?? TagNotFound Latest tool
-fromVersion' (SetToolTag Recommended) tool = do
-  GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-  (\(x, y) -> (mkTVer x, Just y)) <$> getRecommended dls tool ?? TagNotFound Recommended tool
-fromVersion' (SetToolTag (Base pvp'')) GHC = do
-  GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-  (\(x, y) -> (mkTVer x, Just y)) <$> 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 {..} -> _tvTarget == Nothing)
-        $ 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 ()
-checkForUpdates = do
-  GHCupInfo { _ghcupDownloads = dls } <- getGHCupInfo
-  lInstalled <- listVersions Nothing (Just ListInstalled)
-  let latestInstalled tool = (fmap lVer . lastMay . filter (\lr -> lTool lr == tool)) lInstalled
-
-  forM_ (getLatest dls GHCup) $ \(l, _) -> do
-    (Right ghc_ver) <- pure $ version $ prettyPVP ghcUpVer
-    when (l > ghc_ver)
-      $ logWarn $
-          "New GHCup version available: " <> prettyVer l <> ". To upgrade, run 'ghcup upgrade'"
-
-  forM_ (getLatest dls GHC) $ \(l, _) -> do
-    let mghc_ver = latestInstalled GHC
-    forM mghc_ver $ \ghc_ver ->
-      when (l > ghc_ver)
-        $ logWarn $
-          "New GHC version available: " <> prettyVer l <> ". To upgrade, run 'ghcup install ghc " <> prettyVer l <> "'"
-
-  forM_ (getLatest dls Cabal) $ \(l, _) -> do
-    let mcabal_ver = latestInstalled Cabal
-    forM mcabal_ver $ \cabal_ver ->
-      when (l > cabal_ver)
-        $ logWarn $
-          "New Cabal version available: " <> prettyVer l <> ". To upgrade, run 'ghcup install cabal " <> prettyVer l <> "'"
-
-  forM_ (getLatest dls HLS) $ \(l, _) -> do
-    let mhls_ver = latestInstalled HLS
-    forM mhls_ver $ \hls_ver ->
-      when (l > hls_ver)
-        $ logWarn $
-          "New HLS version available: " <> prettyVer l <> ". To upgrade, run 'ghcup install hls " <> prettyVer l <> "'"
-
-  forM_ (getLatest dls Stack) $ \(l, _) -> do
-    let mstack_ver = latestInstalled Stack
-    forM mstack_ver $ \stack_ver ->
-      when (l > stack_ver)
-        $ logWarn $
-          "New Stack version available: " <> prettyVer l <> ". To upgrade, run 'ghcup install stack " <> prettyVer l <> "'"
--- a/app/ghcup/GHCup/OptParse/Compile.hs
+++ b/app/ghcup/GHCup/OptParse/Compile.hs
@@ -1,518 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# 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 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
-  , patchDir     :: Maybe FilePath
-  , 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 FilePath
-  , cabalProjectLocal :: Maybe FilePath
-  , patchDir     :: Maybe FilePath
-  , targetGHCs   :: [ToolVersion]
-  }
-
-
-
-
-    ---------------
-    --[ 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 $(pwd)/build.mk -- --enable-unregisterised|]
-
-  compileHLSFooter = [s|Discussion:
-  Compiles and installs the specified HLS version.
-  The last argument is a list of GHC versions to compile for.
-  These need to be available in PATH prior to compilation.
-
-Examples:
-  ghcup compile hls -v 1.4.0 -j 12 8.10.5 8.10.7 9.0.1|]
-
-
-ghcCompileOpts :: Parser GHCCompileOptions
-ghcCompileOpts =
-  GHCCompileOptions
-    <$> ((Left <$> option
-          (eitherReader
-            (first (const "Not a valid version") . version . T.pack)
-          )
-          (short 'v' <> long "version" <> metavar "VERSION" <> help
-            "The tool version to compile"
-          )
-          ) <|>
-          (Right <$> (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)"))
-          )))
-    <*> 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)"
-          )
-    <*> optional
-          (option
-            (eitherReader (readEither @Int))
-            (short 'j' <> long "jobs" <> metavar "JOBS" <> help
-              "How many jobs to use for make"
-            )
-          )
-    <*> optional
-          (option
-            str
-            (short 'c' <> long "config" <> metavar "CONFIG" <> help
-              "Absolute path to build config file"
-            )
-          )
-    <*> optional
-          (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)"
-            )
-          )
-    <*> 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)"))
-    <*> flag
-          False
-          True
-          (long "set" <> 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'"
-            )
-          )
-    <*> 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"
-            )
-           )
-
-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"
-          )
-          ) <|>
-          (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)"))
-          )))
-    <*> optional
-          (option
-            (eitherReader (readEither @Int))
-            (short 'j' <> long "jobs" <> metavar "JOBS" <> help
-              "How many jobs to use for make"
-            )
-          )
-    <*> flag
-          False
-          True
-          (long "set" <> 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'"
-            )
-          )
-    <*> 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"
-            )
-           )
-    <*> optional
-          (option
-            str
-            (long "cabal-project" <> metavar "CABAL_PROJECT" <> help
-              "If relative, specifies the path to cabal.project inside the unpacked HLS tarball/checkout. If absolute, will copy the file over."
-            )
-          )
-    <*> optional
-          (option
-            (eitherReader absolutePathParser)
-            (long "cabal-project-local" <> metavar "CABAL_PROJECT_LOCAL" <> help
-              "Absolute path to a cabal.project.local to be used for the build. Will be copied over."
-            )
-          )
-    <*> optional
-          (option
-            (eitherReader absolutePathParser)
-            (short 'p' <> long "patchdir" <> metavar "PATCH_DIR" <> help
-              "Absolute path to patch directory (applies all .patch and .diff files in order using -p1)"
-            )
-          )
-    <*> some (toolVersionArgument Nothing (Just GHC))
-
-
-
-
-
-    ---------------------------
-    --[ 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
-      -> (forall eff a . ReaderT AppState m (VEither eff a) -> m (VEither eff a))
-      -> (ReaderT LeanAppState m () -> m ())
-      -> m ExitCode
-compile compileCommand settings runAppState runLogger = do
-  VRight Dirs{ .. }  <- runAppState (VRight <$> getDirs)
-  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
-                    patchDir
-        GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-        let vi = getVersionInfo targetVer HLS dls
-        when setCompile $ void $ liftE $
-          setHLS targetVer
-        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
-                    patchDir
-                    addConfArgs
-                    buildFlavour
-                    hadrian
-                    isolateDir
-        GHCupInfo { _ghcupDownloads = dls } <- lift getGHCupInfo
-        let vi = getVersionInfo (_tvVersion targetVer) GHC dls
-        when setCompile $ void $ liftE $
-          setGHC targetVer SetGHCOnly
-        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
@@ -1,169 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-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
-
-#if !MIN_VERSION_base(4,13,0)
-import           Control.Monad.Fail             ( MonadFail )
-#endif
-import           Control.Monad.Reader
-import           Control.Monad.Trans.Resource
-import           Data.Bifunctor
-import           Data.Functor
-import           Data.Maybe
-import           Haskus.Utils.Variant.Excepts
-import           Options.Applicative     hiding ( style )
-import           Prelude                 hiding ( appendFile )
-import           System.Exit
-
-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 String
-  | InitConfig
-
-
-
-    ---------------
-    --[ Parsers ]--
-    ---------------
-
-          
-configP :: Parser ConfigCommand
-configP = subparser
-      (  command "init" initP
-      <> command "set"  setP -- [set] KEY VALUE at help lhs
-      <> command "show" showP
-      )
-    <|> 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")
-  argsP = SetConfig <$> argument str (metavar "KEY") <*> argument str (metavar "VALUE")
-
-
-
-
-    --------------
-    --[ Footer ]--
-    --------------
-
-
-configFooter :: String
-configFooter = [s|Examples:
-
-  # show current config
-  ghcup config
-
-  # initialize config
-  ghcup config init
-
-  # set <key> <value> configuration pair
-  ghcup config <key> <value>|]
-
-
-
-    -----------------
-    --[ Utilities ]--
-    -----------------
-
-
-formatConfig :: UserSettings -> String
-formatConfig = UTF8.toString . Y.encode1Strict
-
-
-updateSettings :: Monad m => UTF8.ByteString -> Settings -> Excepts '[JSONError] m Settings
-updateSettings config' settings = do
-  settings' <- lE' JSONDecodeError . first snd . Y.decode1Strict $ config'
-  pure $ mergeConf settings' settings
-  where
-   mergeConf :: UserSettings -> Settings -> Settings
-   mergeConf UserSettings{..} Settings{..} =
-     let cache'      = fromMaybe cache uCache
-         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' noVerify' keepDirs' downloader' verbose' urlSource' noNetwork' gpgSetting' noColor
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-config :: ( 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 v) -> do
-    case v of
-      "" -> do
-        runLogger $ logError "Empty values are not allowed"
-        pure $ ExitFailure 55
-      _  -> do
-        r <- runE @'[JSONError] $ do
-          settings' <- updateSettings (UTF8.fromString (k <> ": " <> v <> "\n")) settings
-          path <- liftIO getConfigFilePath
-          liftIO $ writeFile path $ formatConfig $ fromSettings settings' (Just keybindings)
-          lift $ runLogger $ logDebug $ T.pack $ show settings'
-          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
--- a/app/ghcup/GHCup/OptParse/DInfo.hs
+++ b/app/ghcup/GHCup/OptParse/DInfo.hs
@@ -1,120 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# 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 (Settings True False Never Curl False GHCupURL False GPGNone False)
-                                               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
@@ -1,144 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# 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
-  lift $ 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
@@ -1,465 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-
-module GHCup.OptParse.Install where
-
-
-
-
-import           GHCup.OptParse.Common
-
-import           GHCup
-import           GHCup.Errors
-import           GHCup.Types
-import           GHCup.Utils.File
-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
-
-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"
-            )
-          )
-    <*> (   (   (,)
-            <$> optional
-                  (option
-                    (eitherReader bindistParser)
-                    (short 'u' <> long "url" <> metavar "BINDIST_URL" <> help
-                      "Install the specified version from this bindist"
-                    )
-                  )
-            <*> (Just <$> toolVersionArgument Nothing tool)
-            )
-        <|> pure (Nothing, Nothing)
-        )
-    <*> flag
-          False
-          True
-          (long "set" <> help
-            "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"
-           )
-          )
-    <*> switch
-          (short 'f' <> long "force" <> help "Force install")
-          
-
-
-
-    --------------
-    --[ 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
-                       ]
-
-
-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
-
-
-
-    -------------------
-    --[ 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 -> runInstTool s' instPlatform $ do
-         (v, vi) <- liftE $ fromVersion instVer GHC
-         liftE $ installGHCBin
-                   (_tvVersion v)
-                   isolateDir
-                   forceInstall
-         when instSet $ void $ liftE $ setGHC v SetGHCOnly
-         pure vi
-       Just uri -> do
-         runInstTool s'{ settings = settings {noVerify = True}} instPlatform $ do
-           (v, vi) <- liftE $ fromVersion instVer GHC
-           liftE $ installGHCBindist
-                     (DownloadInfo uri (Just $ RegexDir "ghc-.*") "")
-                     (_tvVersion v)
-                     isolateDir
-                     forceInstall
-           when instSet $ void $ liftE $ setGHC v SetGHCOnly
-           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 (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 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
-         (v, vi) <- liftE $ fromVersion instVer Cabal
-         liftE $ installCabalBin
-                   (_tvVersion v)
-                   isolateDir
-                   forceInstall
-         pure vi
-       Just uri -> do
-         runInstTool s'{ settings = settings { noVerify = True}} instPlatform $ do
-           (v, vi) <- liftE $ fromVersion instVer Cabal
-           liftE $ installCabalBindist 
-                     (DownloadInfo uri Nothing "")
-                     (_tvVersion v)
-                     isolateDir
-                     forceInstall
-           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 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
-         (v, vi) <- liftE $ fromVersion instVer HLS
-         liftE $ installHLSBin
-                   (_tvVersion v)
-                   isolateDir
-                   forceInstall
-         pure vi
-       Just uri -> do
-         runInstTool s'{ settings = settings { noVerify = True}} instPlatform $ do
-           (v, vi) <- liftE $ fromVersion instVer HLS
-           liftE $ installHLSBindist
-                     (DownloadInfo uri Nothing "")
-                     (_tvVersion v)
-                     isolateDir
-                     forceInstall
-           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 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
-          (v, vi) <- liftE $ fromVersion instVer Stack
-          liftE $ installStackBin
-                    (_tvVersion v)
-                    isolateDir
-                    forceInstall
-          pure vi
-        Just uri -> do
-          runInstTool s'{ settings = settings { noVerify = True}} instPlatform $ do
-            (v, vi) <- liftE $ fromVersion instVer Stack
-            liftE $ installStackBindist
-                      (DownloadInfo uri Nothing "")
-                      (_tvVersion v)
-                      isolateDir
-                      forceInstall
-            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 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
@@ -1,272 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.List where
-
-
-
-
-import           GHCup
-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"
-            )
-          )
-    <*> optional
-          (option
-            (eitherReader criteriaParser)
-            (  short 'c'
-            <> long "show-criteria"
-            <> metavar "<installed|set|available>"
-            <> help "Show only installed/set/available tool versions"
-            )
-          )
-    <*> 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 = flip const
-          | 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
-#if defined(IS_WINDOWS)
-                    | lSet       -> (color Green "IS")
-                    | lInstalled -> (color Green "I ")
-                    | otherwise  -> (color Red "X ")
-#else
-                    | lSet       -> (color Green "✔✔")
-                    | lInstalled -> (color Green "✓ ")
-                    | otherwise  -> (color Red "✗ ")
-#endif
-              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) (replicate (length rows) []) rows
-      lengths = fmap maximum . (fmap . fmap) strWidth $ cols
-      padded  = fmap (\xs -> zipWith padTo xs lengths) rows
-
-  forM_ padded $ \row -> putStrLn $ intercalate " " 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
@@ -1,102 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# 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
@@ -1,220 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# 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/)")))
-          <*> ( optional (toolVersionArgument Nothing (Just GHC)) ))
-        ( progDesc "Download GHC assets for installation")
-      )
-      <>
-     command
-      "cabal"
-      (info 
-        (PrefetchCabal
-          <$> fmap PrefetchOptions (optional (option str (short 'd' <> long "directory" <> help "directory to download into (default: ~/.ghcup/cache/)")))
-          <*> ( optional (toolVersionArgument Nothing (Just Cabal)) <**> helper ))
-        ( progDesc "Download cabal assets for installation")
-      )
-      <>
-     command
-      "hls"
-      (info 
-        (PrefetchHLS
-          <$> fmap PrefetchOptions (optional (option str (short 'd' <> long "directory" <> help "directory to download into (default: ~/.ghcup/cache/)")))
-          <*> ( optional (toolVersionArgument Nothing (Just HLS)) <**> helper ))
-        ( progDesc "Download HLS assets for installation")
-      )
-      <>
-     command
-      "stack"
-      (info 
-        (PrefetchStack
-          <$> fmap PrefetchOptions (optional (option str (short 'd' <> long "directory" <> help "directory to download into (default: ~/.ghcup/cache/)")))
-          <*> ( optional (toolVersionArgument Nothing (Just Stack)) <**> helper ))
-        ( progDesc "Download stack assets for installation")
-      )
-      <>
-     command
-      "metadata"
-      (const PrefetchMetadata <$> 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
@@ -1,233 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# 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/Set.hs
+++ b/app/ghcup/GHCup/OptParse/Set.hs
@@ -1,347 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# 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)
-
-
-
-
-    ----------------
-    --[ 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 . ( Monad m
-       , MonadMask m
-       , MonadUnliftIO m
-       , MonadFail m
-       )
-    => Either SetCommand SetOptions
-    -> (forall eff . ReaderT AppState m (VEither eff GHCTargetVersion)
-        -> m (VEither eff GHCTargetVersion))
-    -> (forall eff . ReaderT LeanAppState 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 >> pure v)
-      _ -> runSetGHC runAppState (do
-          v <- liftE $ fst <$> fromVersion' sToolVer GHC
-          liftE $ setGHC v SetGHCOnly
-        )
-      >>= \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) >> pure v)
-      _ -> runSetHLS runAppState (do
-          v <- liftE $ fst <$> fromVersion' sToolVer HLS
-          liftE $ setHLS (_tvVersion v)
-          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
@@ -1,86 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE RankNTypes #-}
-
-module GHCup.OptParse.ToolRequirements where
-
-
-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           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
-
-
-
-
-
-    ---------------------------
-    --[ 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
-                    )
-                 => (ReaderT AppState m (VEither ToolRequirementsEffects ()) -> m (VEither ToolRequirementsEffects ()))
-                 -> (ReaderT LeanAppState m () -> m ())
-                 -> m ExitCode
-toolRequirements runAppState runLogger = runToolRequirements runAppState (do
-    GHCupInfo { .. } <- lift getGHCupInfo
-    platform' <- liftE getPlatform
-    req      <- getCommonRequirements platform' _toolRequirements ?? NoToolRequirements
-    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
@@ -1,204 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# 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)
-
-
-
-
-    ----------------
-    --[ 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
-         )
-      => UnsetCommand
-      -> (ReaderT LeanAppState 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
@@ -1,153 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# 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
-        <$> option
-              str
-              (short 't' <> long "target" <> metavar "TARGET_DIR" <> help
-                "Absolute filepath to write ghcup into"
-              )
-        )
-    <|> pure UpgradeGHCupDir
-
-
-
-
-    ---------------------------
-    --[ Effect interpreters ]--
-    ---------------------------
-
-
-type UpgradeEffects = '[ DigestError
-                       , GPGError
-                       , NoDownload
-                       , NoUpdate
-                       , FileDoesNotExistError
-                       , CopyError
-                       , DownloadFailed
-                       ]
-
-
-runUpgrade :: MonadUnliftIO m
-           => (ReaderT AppState m (VEither UpgradeEffects a) -> m (VEither UpgradeEffects a))
-           -> Excepts UpgradeEffects (ResourceT (ReaderT AppState m)) a
-           -> m (VEither UpgradeEffects a)
-runUpgrade runAppState =
-  runAppState
-  . runResourceT
-  . runE
-    @UpgradeEffects
-
-
-
-    ------------------
-    --[ Entrypoint ]--
-    ------------------
-
-
-
-upgrade :: ( Monad m
-         , MonadMask m
-         , MonadUnliftIO m
-         , MonadFail m
-         )
-        => UpgradeOpts
-        -> Bool
-        -> (forall a. ReaderT AppState m (VEither UpgradeEffects a) -> m (VEither UpgradeEffects a))
-        -> (ReaderT LeanAppState m () -> m ())
-        -> m ExitCode
-upgrade uOpts force' runAppState runLogger = do
-  VRight Dirs{ .. }  <- runAppState (VRight <$> getDirs)
-  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
@@ -1,320 +0,0 @@
-{-# LANGUAGE CPP               #-}
-{-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE TypeApplications  #-}
-{-# LANGUAGE FlexibleContexts  #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TemplateHaskell   #-}
-{-# LANGUAGE QuasiQuotes       #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# 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
-  VRight Dirs{ .. }  <- runAppState (VRight <$> getDirs)
-  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{..}) ->
-      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/202
+++ b/202
@@ -0,0 +1,202 @@
+#!/bin/sh
+
+# safety subshell to avoid executing anything in case this script is not downloaded properly
+(
+
+: "${GHCUP_INSTALL_BASE_PREFIX:=$HOME}"
+
+die() {
+    (>&2 printf "\\033[0;31m%s\\033[0m\\n" "$1")
+    exit 2
+}
+
+edo()
+{
+    "$@" || die "\"$*\" failed!"
+}
+
+eghcup() {
+    if [ -z "${BOOTSTRAP_HASKELL_VERBOSE}" ] ; then
+        edo ghcup "$@"
+    else
+        edo ghcup --verbose "$@"
+    fi
+}
+
+download_ghcup() {
+	_plat="$(uname -s)"
+	_arch=$(uname -m)
+
+    case "${_plat}" in
+        "linux"|"Linux")
+			case "${_arch}" in
+				x86_64|amd64)
+					_url=https://downloads.haskell.org/~ghcup/0.1.4/x86_64-linux-ghcup-0.1.4
+					;;
+				i*86)
+					_url=https://downloads.haskell.org/~ghcup/0.1.4/i386-linux-ghcup-0.1.4
+					;;
+				*) die "Unknown architecture: ${_arch}"
+					;;
+			esac
+			;;
+        "FreeBSD"|"freebsd")
+			case "${_arch}" in
+				x86_64|amd64)
+					;;
+				i*86)
+					die "i386 currently not supported!"
+					;;
+				*) die "Unknown architecture: ${_arch}"
+					;;
+			esac
+			_url=https://downloads.haskell.org/~ghcup/0.1.4/x86_64-portbld-freebsd-ghcup-0.1.4
+            ;;
+        "Darwin"|"darwin")
+			case "${_arch}" in
+				x86_64|amd64)
+					;;
+				i*86)
+					die "i386 currently not supported!"
+					;;
+				*) die "Unknown architecture: ${_arch}"
+					;;
+			esac
+			_url=https://downloads.haskell.org/~ghcup/0.1.4/x86_64-apple-darwin-ghcup-0.1.4 ;;
+        *) die "Unknown platform: ${_plat}"
+			;;
+    esac
+
+	edo curl -Lf "${_url}" > "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/ghcup
+
+	unset _plat _arch _url
+}
+
+
+echo
+echo "Welcome to Haskell!"
+echo
+echo "This will download and install the Glasgow Haskell Compiler (GHC)"
+echo "and the Cabal build tool."
+echo
+echo "ghcup installs only into the following directory, which can be removed anytime:"
+echo "  $GHCUP_INSTALL_BASE_PREFIX/.ghcup"
+echo
+
+if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+    printf "\\033[0;35m%s\\033[0m\\n" "Press ENTER to proceed"
+    printf "\\033[0;35m%s\\033[0m\\n" "or ctrl-c to abort."
+    printf "\\033[0;35m%s\\033[0m\\n" "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 "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin
+
+if command -V "ghcup" >/dev/null 2>&1 ; then
+    if [ -z "${BOOTSTRAP_HASKELL_NO_UPGRADE}" ] ; then
+        eghcup upgrade
+    fi
+else
+	download_ghcup
+    edo chmod +x "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/ghcup
+
+	cat <<-EOF > "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/env || die "Failed to create env file"
+		export PATH="\$HOME/.cabal/bin:\${GHCUP_INSTALL_BASE_PREFIX:=\$HOME}/.ghcup/bin:\$PATH"
+		EOF
+	# shellcheck disable=SC1090
+    edo . "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/env
+    eghcup upgrade
+fi
+
+echo
+echo "$(ghcup tool-requirements)"
+echo
+
+if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+    printf "\\033[0;35m%s\\033[0m\\n" "Press ENTER to proceed"
+    printf "\\033[0;35m%s\\033[0m\\n" "or ctrl-c to abort."
+    printf "\\033[0;35m%s\\033[0m\\n" "Installation may take a while."
+    echo
+
+    # Wait for user input to continue.
+    # shellcheck disable=SC2034
+    read -r answer </dev/tty
+fi
+
+eghcup --cache install
+
+eghcup set
+eghcup --cache install-cabal
+
+edo cabal new-update
+
+printf "\\033[0;35m%s\\033[0m\\n" ""
+printf "\\033[0;35m%s\\033[0m\\n" "Installation done!"
+printf "\\033[0;35m%s\\033[0m\\n" ""
+
+if [ -z "${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_INSTALL_BASE_PREFIX/.ghcup/env' in your shell"
+    echo "configuration to do so (e.g. ~/.bashrc)."
+
+	case $SHELL in
+		*/zsh) # login shell is zsh
+			GHCUP_PROFILE_FILE="$HOME/.zshrc"
+			MY_SHELL="zsh" ;;
+		*/bash) # login shell is bash
+			if [ -f "$HOME/.bashrc" ] ; then # bashrc is not sourced by default, so assume it isn't if file does not exist
+				GHCUP_PROFILE_FILE="$HOME/.bashrc"
+			else
+				GHCUP_PROFILE_FILE="$HOME/.bash_profile"
+			fi
+
+			MY_SHELL="bash" ;;
+		*/sh) # login shell is sh, but might be a symlink to bash or zsh
+			if [ -n "${BASH}" ] ; then
+				if [ -f "$HOME/.bashrc" ] ; then # bashrc is not sourced by default, so assume it isn't if file does not exist
+					GHCUP_PROFILE_FILE="$HOME/.bashrc"
+				else
+					GHCUP_PROFILE_FILE="$HOME/.bash_profile"
+				fi
+
+				MY_SHELL="bash"
+			elif [ -n "${ZSH_VERSION}" ] ; then
+				GHCUP_PROFILE_FILE="$HOME/.zshrc"
+				MY_SHELL="zsh"
+			else
+				exit 0
+			fi
+			;;
+		*) exit 0 ;;
+	esac
+
+
+	printf "\\033[0;35m%s\\033[0m\\n" ""
+	printf "\\033[0;35m%s\\033[0m\\n" "Detected ${MY_SHELL} shell on your system..."
+	printf "\\033[0;35m%s\\033[0m\\n" "If you want ghcup to automatically add the required PATH variable to \"${GHCUP_PROFILE_FILE}\""
+	printf "\\033[0;35m%s\\033[0m\\n" "answer with YES, otherwise with NO and press ENTER."
+	printf "\\033[0;35m%s\\033[0m\\n" ""
+
+    while true; do
+        read -r next_answer </dev/tty
+
+        case $next_answer in
+            [Yy]*)
+                echo "[ -f \"\${GHCUP_INSTALL_BASE_PREFIX:=\$HOME}/.ghcup/env\" ] && source \"\${GHCUP_INSTALL_BASE_PREFIX:=\$HOME}/.ghcup/env\"" >> "${GHCUP_PROFILE_FILE}"
+                printf "\\033[0;35m%s\\033[0m\\n" "OK! ${GHCUP_PROFILE_FILE} has been modified. Restart your terminal for the changes to take effect,"
+                printf "\\033[0;35m%s\\033[0m\\n" "or type \"source ${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/env\" to apply them in your current terminal session."
+                exit 0;;
+            [Nn]*)
+                exit 0;;
+            *)
+                echo "Please type YES or NO and press enter.";;
+        esac
+    done
+fi
+)
+
+# vim: tabstop=4 shiftwidth=4 expandtab
+
--- a/cabal.ghc8107.project
+++ b/cabal.ghc8107.project
@@ -1,24 +0,0 @@
-packages: ./ghcup.cabal
-
-optional-packages: ./vendored/*/*.cabal
-
-optimization: 2
-
-package ghcup
-    tests: True
-    flags: +tui
-
-constraints: http-io-streams -brotli
-
-package libarchive
-  flags: -system-libarchive
-
-package aeson-pretty
-  flags: +lib-only
-
-package cabal-plan
-  flags: -exe
-
-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
@@ -1,213 +0,0 @@
-active-repositories: hackage.haskell.org:merge
-constraints: any.Cabal ==3.2.1.0 || ==3.6.1.0,
-             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.HsYAML ==0.2.1.0,
-             HsYAML -exe,
-             any.HsYAML-aeson ==0.2.0.0,
-             any.QuickCheck ==2.14.2,
-             QuickCheck -old-random +templatehaskell,
-             any.StateVar ==1.2.2,
-             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.assoc ==1.0.2,
-             any.async ==2.2.3,
-             async -bench,
-             any.attoparsec ==0.13.2.5,
-             attoparsec -developer,
-             any.base ==4.14.3.0,
-             any.base-compat ==0.12.0,
-             any.base-compat-batteries ==0.12.0,
-             any.base-orphans ==0.8.5,
-             any.base16-bytestring ==1.0.1.0,
-             any.base64-bytestring ==1.1.0.0,
-             any.bifunctors ==5.5.11,
-             bifunctors +semigroups +tagged,
-             any.binary ==0.8.8.0,
-             any.blaze-builder ==0.4.2.1,
-             any.brick ==0.64.1,
-             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 ==0.7.2.0,
-             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 ==0.8.2,
-             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 ==0.11.100.1,
-             any.cryptohash-sha256 ==0.11.102.0,
-             cryptohash-sha256 -exe +use-cbits,
-             any.data-clist ==0.1.2.3,
-             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.generic-arbitrary ==0.1.0,
-             any.ghc-boot-th ==8.10.7,
-             any.ghc-byteorder ==4.11.0.0.10,
-             any.ghc-prim ==0.6.1,
-             any.happy ==1.20.0,
-             any.hashable ==1.3.3.0,
-             hashable +integer-gmp -random-initial-seed,
-             any.haskus-utils-data ==1.4,
-             any.haskus-utils-types ==1.5.1,
-             any.haskus-utils-variant ==3.1,
-             any.hsc2hs ==0.68.7,
-             hsc2hs -in-ghc-tree,
-             any.hspec ==2.7.10,
-             any.hspec-core ==2.7.10,
-             any.hspec-discover ==2.7.10,
-             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 ==0.1.1,
-             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.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 ==3.0.3.0,
-             libarchive -cross -low-memory -system-libarchive,
-             any.lzma-static ==5.2.5.4,
-             any.megaparsec ==9.0.1,
-             megaparsec -dev,
-             any.microlens ==0.4.12.0,
-             any.microlens-mtl ==0.2.0.1,
-             any.microlens-th ==0.4.3.10,
-             any.mtl ==2.2.2,
-             any.network ==3.1.2.2,
-             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 ==0.16.1.0,
-             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.polyparse ==1.13,
-             any.pretty ==1.1.3.6,
-             any.pretty-terminal ==0.1.0.0,
-             any.primitive ==0.7.2.0,
-             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 ==5.2.2.1,
-             recursion-schemes +template-haskell,
-             any.regex-base ==0.94.0.1,
-             any.regex-posix ==0.96.0.1,
-             regex-posix -_regex-posix-clib,
-             any.resourcet ==1.2.4.3,
-             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.semigroupoids ==5.3.5,
-             semigroupoids +comonad +containers +contravariant +distributive +tagged +unordered-containers,
-             any.setenv ==0.1.1.3,
-             any.split ==0.2.3.4,
-             any.splitmix ==0.1.0.3,
-             splitmix -optimised-mixer,
-             any.stm ==2.5.0.1,
-             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.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-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 ==0.1.18,
-             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,
-             transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
-             any.unix ==2.7.2.2,
-             any.unix-bytestring ==0.3.7.3,
-             any.unix-compat ==0.5.3,
-             unix-compat -old-time,
-             any.unliftio-core ==0.2.0.1,
-             any.unordered-containers ==0.2.14.0,
-             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 ==5.0.0,
-             any.vty ==5.33,
-             any.word-wrap ==0.5,
-             any.word8 ==0.1.3,
-             any.xor ==0.0.1.0,
-             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 2021-10-01T15:16:26Z
--- a/cabal.ghc901.project
+++ b/cabal.ghc901.project
@@ -1,24 +0,0 @@
-packages: ./ghcup.cabal
-
-optional-packages: ./vendored/*/*.cabal
-
-optimization: 2
-
-package ghcup
-    tests: True
-    flags: +tui
-
-constraints: http-io-streams -brotli
-
-package libarchive
-  flags: -system-libarchive
-
-package aeson-pretty
-  flags: +lib-only
-
-package cabal-plan
-  flags: -exe
-
-allow-newer: base, ghc-prim, template-haskell, language-c
-
-with-compiler: ghc-9.0.1
--- a/cabal.ghc901.project.freeze
+++ b/cabal.ghc901.project.freeze
@@ -1,213 +0,0 @@
-active-repositories: hackage.haskell.org:merge
-constraints: any.Cabal ==3.4.0.0 || ==3.6.1.0,
-             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.HsYAML ==0.2.1.0,
-             HsYAML -exe,
-             any.HsYAML-aeson ==0.2.0.0,
-             any.QuickCheck ==2.14.2,
-             QuickCheck -old-random +templatehaskell,
-             any.StateVar ==1.2.2,
-             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.assoc ==1.0.2,
-             any.async ==2.2.3,
-             async -bench,
-             any.attoparsec ==0.13.2.5,
-             attoparsec -developer,
-             any.base ==4.15.0.0,
-             any.base-compat ==0.12.0,
-             any.base-compat-batteries ==0.12.0,
-             any.base-orphans ==0.8.5,
-             any.base16-bytestring ==1.0.1.0,
-             any.base64-bytestring ==1.1.0.0,
-             any.bifunctors ==5.5.11,
-             bifunctors +semigroups +tagged,
-             any.binary ==0.8.8.0,
-             any.blaze-builder ==0.4.2.1,
-             any.brick ==0.64.1,
-             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 ==0.7.2.0,
-             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 ==0.8.2,
-             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 ==0.11.100.1,
-             any.cryptohash-sha256 ==0.11.102.0,
-             cryptohash-sha256 -exe +use-cbits,
-             any.data-clist ==0.1.2.3,
-             any.data-fix ==0.3.2,
-             any.deepseq ==1.4.5.0,
-             any.directory ==1.3.6.1,
-             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.generic-arbitrary ==0.1.0,
-             any.ghc-bignum ==1.0,
-             any.ghc-boot-th ==9.0.1,
-             any.ghc-byteorder ==4.11.0.0.10,
-             any.ghc-prim ==0.7.0,
-             any.happy ==1.20.0,
-             any.hashable ==1.3.3.0,
-             hashable +integer-gmp -random-initial-seed,
-             any.haskus-utils-data ==1.4,
-             any.haskus-utils-types ==1.5.1,
-             any.haskus-utils-variant ==3.1,
-             any.hsc2hs ==0.68.7,
-             hsc2hs -in-ghc-tree,
-             any.hspec ==2.7.10,
-             any.hspec-core ==2.7.10,
-             any.hspec-discover ==2.7.10,
-             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 ==0.1.1,
-             any.indexed-traversable-instances ==0.1,
-             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 ==3.0.3.0,
-             libarchive -cross -low-memory -system-libarchive,
-             any.lzma-static ==5.2.5.4,
-             any.megaparsec ==9.0.1,
-             megaparsec -dev,
-             any.microlens ==0.4.12.0,
-             any.microlens-mtl ==0.2.0.1,
-             any.microlens-th ==0.4.3.10,
-             any.mtl ==2.2.2,
-             any.network ==3.1.2.2,
-             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 ==0.16.1.0,
-             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.polyparse ==1.13,
-             any.pretty ==1.1.3.6,
-             any.pretty-terminal ==0.1.0.0,
-             any.primitive ==0.7.2.0,
-             any.process ==1.6.11.0,
-             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 ==5.2.2.1,
-             recursion-schemes +template-haskell,
-             any.regex-base ==0.94.0.1,
-             any.regex-posix ==0.96.0.1,
-             regex-posix -_regex-posix-clib,
-             any.resourcet ==1.2.4.3,
-             any.rts ==1.0,
-             any.safe ==0.3.19,
-             any.safe-exceptions ==0.1.7.2,
-             any.scientific ==0.3.7.0,
-             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.split ==0.2.3.4,
-             any.splitmix ==0.1.0.3,
-             splitmix -optimised-mixer,
-             any.stm ==2.5.0.0,
-             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.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 ==0.4.1.4,
-             any.text ==1.2.4.1,
-             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 ==0.1.18,
-             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,
-             transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
-             any.unix ==2.7.2.2,
-             any.unix-bytestring ==0.3.7.3,
-             any.unix-compat ==0.5.3,
-             unix-compat -old-time,
-             any.unliftio-core ==0.2.0.1,
-             any.unordered-containers ==0.2.14.0,
-             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 ==5.0.0,
-             any.vty ==5.33,
-             any.word-wrap ==0.5,
-             any.word8 ==0.1.3,
-             any.xor ==0.0.1.0,
-             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 2021-10-01T15:16:26Z
--- a/cabal.project
+++ b/cabal.project
@@ -1,37 +1,16 @@
 packages: ./ghcup.cabal

-optional-packages: ./vendored/*/*.cabal
-
 optimization: 2

+package streamly
+    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
+
 package ghcup
-    tests: True
-    flags: +tui
+    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16

-constraints: http-io-streams -brotli,
-             any.Cabal ==3.4.0.0 || ==3.6.2.0,
-             any.aeson >= 2.0.1.0
+package tar-bytestring
+    ghc-options: -O2

-source-repository-package
-    type: git
-    location: https://github.com/hasufell/aeson-pretty.git
-    tag: e902ab866bb41d990b66af3644aeb352ff7aaf6f
+constraints: http-io-streams -brotli

-source-repository-package
-    type: git
-    location: https://github.com/hasufell/HsYAML-aeson.git
-    tag: b4b4ab8592918b52a9f2e5bb0c5a795b9721b4f3
-
-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
+allow-newer: base
--- a/cabal.project.freeze
+++ b/cabal.project.freeze
@@ -1,2 +0,0 @@
-- windows picks weird version
-constraints: any.hsc2hs ==0.68.7
--- 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/config.yaml
+++ b/data/config.yaml
@@ -1,67 +0,0 @@
-# Cache downloads in ~/.ghcup/cache
-cache: False
-# Skip tarball checksum verification
-no-verify: False
-# enable verbosity
-verbose: False
-# When to keep build directories
-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
-# for possible values.
-key-bindings:
-  up:
-    KUp: []
-  down:
-    KDown: []
-  quit:
-    KChar: 'q'
-  install:
-    KChar: 'i'
-  uninstall:
-    KChar: 'u'
-  set:
-    KChar: 's'
-  changelog:
-    KChar: 'c'
-  show-all:
-    KChar: 'a'
-  show-all-tools:
-    KChar: 't'
-
-# Where to get GHC/cabal/hls download info/versions from. For more detailed explanation
-# check the 'URLSource' type in the code.
-url-source:
-  ## Use the internal download uri, this is the default
-  GHCupURL: []
-
-  ## Example 1: Read download info from this location instead
-  ## Accepts file/http/https scheme
-  # OwnSource: "file:///home/jule/git/ghcup-hs/ghcup-0.0.3.yaml"
-
-  ## Example 2: Add custom tarballs to the default downloads, overwriting duplicate versions
-  # AddSource:
-    # Left:
-      # toolRequirements: {} # this is ignored
-      # ghcupDownloads:
-        # GHC:
-          # 9.10.2:
-            # viTags: []
-            # viArch:
-              # A_64:
-                # Linux_UnknownLinux:
-                  # unknown_versioning:
-                    # dlUri: https://downloads.haskell.org/~ghc/7.10.3/ghc-7.10.3-x86_64-deb8-linux.tar.bz2
-                    # dlSubdir: ghc-7.10.3
-                    # dlHash: 01cfbad8dff1e8b34a5fdca8caeaf843b56e36af919e29cd68870d2588563db5
-
-  ## Example 3: Add a custom download file to the default downloads, overwriting duplicate versions
-  # AddSource:
-    # Right: "file:///home/jule/git/ghcup-hs/ghcup-custom.yaml"
--- a/data/metadata/ghcup-0.0.2.yaml
+++ b/data/metadata/ghcup-0.0.2.yaml
--- a/data/metadata/ghcup-0.0.3.yaml
+++ b/data/metadata/ghcup-0.0.3.yaml
--- a/data/metadata/ghcup-0.0.4.yaml
+++ b/data/metadata/ghcup-0.0.4.yaml
--- a/data/metadata/ghcup-0.0.5.yaml
+++ b/data/metadata/ghcup-0.0.5.yaml
--- a/data/metadata/ghcup-0.0.6.yaml
+++ b/data/metadata/ghcup-0.0.6.yaml
--- a/docker/build.sh
+++ b/docker/build.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -ex
+
+cd /app
+
+cabal v2-update
+
+cabal v2-install \
+	--install-method=copy \
+	--overwrite-policy=always \
+	--installdir="/bin" \
+	--ghc-options='-optl-static'
+
--- 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 @@
-<svg width="71" height="55" viewBox="0 0 71 55" fill="none" xmlns="http://www.w3.org/2000/svg">
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--- a/docs/Matrix_logo.svg
+++ b/docs/Matrix_logo.svg
@@ -1,7 +0,0 @@
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-<title>Matrix (protocol) logo</title>
- <g fill="#040404">
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--- a/docs/Octicons-bug.svg
+++ b/docs/Octicons-bug.svg
@@ -1,36 +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
@@ -1,330 +0,0 @@
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-  --theme-purple: #5E5184;
-  --link-pink: #9E358F;
-}
-
-h2
-{
-  border-bottom:1px solid #CCC;
-  padding-bottom:5px;
-  padding-top:15px;
-}
-
-h1 {
-  text-align: center;
-  font-size: 60px;
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-  padding-top:10px;
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-h4 {
-  font-size: 25px;
-  padding-top:10px;
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-
-.index-ghcup-hero {
-  display: flex;
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-  align-items: center;
-}
-
-.index-ghcup-hero img {
-  width: 10%;
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-  max-width: 120px;
-  border: none;
-  margin: 0;
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-.index-ghcup-hero h1 {
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-div.col-md-9 h1:first-of-type {
-  text-align: center;
-  font-size: 60px;
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-  text-align: center;
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-div.col-md-9 p.admonition-title:first-of-type {
-  text-align: left;
-}
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-div.col-md-9 h1:first-of-type .headerlink {
-  display: none;
-}
-
-code.no-highlight {
-  color: black;
-}
-
-div.gh-badge img {
-  margin: 0;
-  padding: 0;
-  height: 25px;
-}
-
-/* Definition List styles */
-
-dd {
-  padding-left: 20px;
-}
-
-/* Homepage */
-
-body.homepage div.jumbotron {
-  margin-top: 1.5rem;
-  padding-top: 1rem;
-  padding-bottom: 0;
-}
-
-body.homepage div.jumbotron div.card {
-  margin-bottom: 2rem;
-}
-
-body.homepage>div.container div.col-md-3 {
-  display: none;
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-body.homepage>div.container div.col-md-9 {
-  /* margin-left: 0; */
-  /* padding-left: 0; */
-  flex: 0 0 100%;
-  max-width: 100%;
-}
-
-.center {
-  display: block !important;
-}
-
-.bg-primary {
-  background-image: none;
-  background-color: var(--theme-purple) !important;
-}
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-body .bg-primary {
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-  background-color: var(--theme-purple);
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-body .btn-primary {
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-.navbar.fixed-top {
-  background-image: none;
-  background-color: var(--theme-purple);
-  border-bottom: 5px solid rgba(69, 59, 97, 0.5);
-  padding: 0px;
-}
-
-.btn-primary:hover {
-  background-color: var(--theme-purple);
-  border: 1px solid var(--theme-purple);
-}
-
-a {
-  color: var(--link-pink);
-}
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-a:hover {
-  color: #996FC2;
-}
-
-.col-md-9 img.main-logo {
-  border: 0px; 
-  padding: 0px;
-  margin: 0px;
-}
-
-.ghcup-intro {
-  text-align: center;
-}
-
-.main-buttons {
-  display: flex;
-  align-items: center;
-  flex-wrap: wrap;
-  justify-content: center;
-}
-
-.main-buttons a {
-  margin-right: 5px;
-  margin-bottom: 5px;
-}
-
-.command-button {
-  display: flex;
-  align-items: center;
-}
-
-.command-button > pre {
-  flex: 0 1 80%;
-  margin: 0;
-  padding: 10px;
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-  box-shadow: inset 0px 0px 20px 0px #333333;
-  font-size: 1em;
-  white-space: nowrap;
-  overflow: auto;
-}
-
-.ghcup-command:before {
-  color: #999;
-  content: " $ ";
-  margin-left: 15px;
-}
-
-div.command-button {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-}
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-.command-button pre {
-
-}
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-div.command-button button {
-  color: #515151;
-  background: rgb(230, 230, 230);
-  border: 1px solid grey;
-  margin: 0 0 0 10px;
-  padding: 10px;
-  flex-basis: 0 0 20%;
-}
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-div.command-button button .fa {
-  font-size: x-large;
-}
-
-div.command-button button:hover {
-  background: rgb(220, 220, 220);
-  color: black;
-  border: 1px solid black;
-}
-
-div.command-button button:focus {
-  background-color: #04aa6d;
-}
-
-footer > hr {
-  border-top: 0.5px solid #CCC;
-}
-
-.qi-container {
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  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;
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-  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 {
-  position: absolute;
-  top:0;
-  left: 0;
-  width: 100%;
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-.index-cta-donate .donate-button {
-  margin: 10px auto;
-  position: relative;
-  display: block;
-  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;
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-.footer div.show-all-platforms {
-  display: inline-block;
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-#help, #collective {
-  display: block;
-  text-align: center;
-}
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-#help img {
-  border: none;
-  margin: 0px;
-  height: 24px;
-}
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-.ghcup-help {
-  margin: 10px auto;
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-  border: none;
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-  margin-top: 10px;
-}
-
--- a/docs/dev.md
+++ b/docs/dev.md
@@ -1,120 +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 appropriate
-yaml files: `data/metadata/ghcup-<yaml-ver>.yaml`.
-
-## 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
-
-1. open the latest `data/metadata/ghcup-<yaml-ver>.yaml`
-2. find the latest ghc version (in yaml tree e.g. `ghcupDownloads -> GHC -> 8.10.7`)
-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          -f data/metadata/ghcup-<yaml-ver>.yaml`
-7. run `cabal run exe:ghcup-gen -- check-tarballs -f data/metadata/ghcup-<yaml-ver>.yaml -u 'ghc-8\.10\.8'`
-
-### 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)
-
-## 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.
-
-# Releasing
-
-1. Update version in `ghcup.cabal` and `boostrap-haskell` (`ghver` variable at the top of the script)
-
-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. Add/fix downloads in `ghcup-<ver>.yaml` (under `data/metadata`), then verify with `ghcup-gen check -f data/metadata/ghcup-<ver>.yaml` and possibly (example only) `ghcup-gen check-tarballs -f data/metadata/ghcup-<ver>.yaml -u 'ghc-8.10.7'`. Generally, new GHC/cabal/stack/hls versions are only added to the latest yaml file. New GHCup versions are added to all (great care must be taken here to not break the parser... e.g. ARM platforms don't parse in all older formats).
-
-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 (`sha256sum --tag * > SHA256SUMS && gpg --detach-sign -u <your-email> SHA256SUMS`)
-
-7. Add ghcup release artifacts to ALL yaml files (see point 4.)
-
-8. Upload the final `data/metadata/ghcup-<ver>.yaml` (and a detached GPG sig of it) to `webhost.haskell.org/ghcup/data/`.
-
-9. Update `bootstrap-haskell` and `bootstrap-haskell.ps1` to `webhost.haskell.org/ghcup/sh/`
-
-10. Update the top-level ghcup symlinks at `downloads.haskell.org/~ghcup`
-
-11. 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
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--- a/docs/ghcup.gif
+++ b/docs/ghcup.gif
--- a/docs/guide.md
+++ b/docs/guide.md
@@ -1,307 +0,0 @@
-# User Guide
-
-`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
-```
-
-## 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.
-
-## 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).
-
-## 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.
-
-## 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_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
-
-## 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).
-
-## 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)
-
-### Example github workflow
-
-On github workflows you can use [https://github.com/haskell/actions/](https://github.com/haskell/actions/)
-
-If you want to install ghcup manually though, here's an example config:
-
-```yml
-name: Haskell CI
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-jobs:
-  build-cabal:
-
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macOS-latest, windows-latest]
-        ghc: ['8.10.7', '9.0.1']
-        cabal: ['3.4.0.0']
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - if: matrix.os == 'windows-latest'
-      name: Install ghcup on windows
-      run: 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:\"
-
-    - if: matrix.os == 'windows-latest'
-      name: Add ghcup to PATH
-      run: echo "/c/ghcup/bin" >> $GITHUB_PATH
-      shell: bash
-
-    - if: matrix.os != 'windows-latest'
-      name: Install ghcup on non-windows
-      run: curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_MINIMAL=1 sh
-
-    - name: Install ghc/cabal
-      run: |
-        ghcup install ghc ${{ matrix.ghc }}
-        ghcup install cabal ${{ matrix.cabal }}
-      shell: bash
-
-    - name: Update cabal index
-      run: cabal update
-      shell: bash
-
-    - name: Build
-      run: cabal build --enable-tests --enable-benchmarks
-      shell: bash
-
-    - name: Run tests
-      run: cabal test
-      shell: bash
-```
-
-## GPG verification
-
-GHCup supports verifying the GPG signature of the metadata file. The metadata file then contains SHA256 hashes of all downloads, so
-this is cryptographically secure.
-
-First, obtain the gpg key:
-
-```sh
-gpg --batch --keyserver keys.openpgp.org --recv-keys 7784930957807690A66EBDBE3786C5262ECB4A3F
-```
-
-Then verify the gpg key in one of these ways:
-
-1. find out where I live and visit me to do offline key signing
-2. figure out my mobile phone number and call me to verify the fingerprint
-3. more boring: contact me on Libera IRC (`maerwald`) and verify the fingerprint
-
-Once you've verified the key, you have to figure out if you trust me.
-
-If you trust me, then you can configure gpg in `~/.ghcup/config.yaml`:
-
-```yml
-gpg-setting: GPGLax # GPGStrict | GPGLax | GPGNone
-```
-
-In `GPGStrict` mode, ghcup will fail if verification fails. In `GPGLax` mode it will just print a warning.
-You can also pass the mode via `ghcup --gpg <strict|lax|none>`.
-   
-## Tips and tricks
-
-### with_ghc wrapper (e.g. for HLS)
-
-Due to some HLS [bugs](https://github.com/mpickering/hie-bios/issues/194) it's necessary that the `ghc` in PATH
-is the one defined in `cabal.project`. With some simple shell functions, we can start our editor with the appropriate
-path prepended.
-
-For bash, in e.g. `~/.bashrc` define:
-
-```sh
-with_ghc() {
-  local np=$(ghcup --offline whereis -d ghc $1 || { ghcup --cache install ghc $1 && ghcup whereis -d ghc $1 ;})
-  if [ -e "${np}" ] ; then
-    shift
-    PATH="$np:$PATH" "$@"
-  else
-    >&2 echo "Cannot find or install GHC version $1"
-    return 1
-  fi
-}
-```
-
-For fish shell, in e.g. `~/.config/fish/config.fish` define:
-
-```fish
-function with_ghc
-  set --local np (ghcup --offline whereis -d ghc $argv[1] ; or begin ghcup --cache install ghc $argv[1] ; and ghcup whereis -d ghc $argv[1] ; end)
-  if test -e "$np"
-    PATH="$np:$PATH" $argv[2..-1]
-  else
-    echo "Cannot find or install GHC version $argv[1]" 1>&2
-    return 1
-  end
-end
-```
-
-Then start a new shell and issue:
-
-```sh
-# replace 'code' with your editor
-with_ghc 8.10.5 code path/to/haskell/source
-```
-
-Cabal and HLS will now see `8.10.5` as the primary GHC, without the need to
-run `ghcup set` all the time when switching between projects.
-
--- a/docs/haskell_logo.png
+++ b/docs/haskell_logo.png
--- a/docs/index.md
+++ b/docs/index.md
@@ -1,99 +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="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
@@ -1,122 +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 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
-```
-
-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.
-
-## First steps
-
-1. To get started with creating a Haskell project, follow the [Getting Started with Haskell and Cabal](https://cabal.readthedocs.io/en/latest/getting-started.html) guide
-2. To properly learn Haskell, run through the [CIS 194 Haskell course](https://www.cis.upenn.edu/~cis194/spring13/) including exercises
-3. 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, double-click on the `Uninstall Haskell.ps1` PowerShell script on your Desktop.
-
-## Supported tools
-
-GHCup supports the following tools, which are also known as the **Haskell Toolchain**:
-
-1. [GHC](https://www.haskell.org/ghc/)
-2. [cabal-install](https://cabal.readthedocs.io/en/latest/)
-3. [haskell-language-server](https://haskell-language-server.readthedocs.io/en/latest/)
-4. [stack](https://docs.haskellstack.org/en/latest/README/)
-
-## 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 <13
-
-Not supported. Would require separate binaries, since >=13 binaries are incompatible.
-Please upgrade.
-
-### MacOS aarch64
-
-HLS bindists are still experimental. Stack is theoretically supported, but has no binaries yet.
-
-### 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. HLS only has experimental ones. Stack not supported currently.
-
-## 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>u7&#45;&gt;u8</title>
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-<title>u7&#45;&gt;u2</title>
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-<polygon fill="black" stroke="black" points="544.54,-275.95 538.9,-284.91 548.9,-281.43 544.54,-275.95"/>
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-<polygon fill="black" stroke="black" points="621.5,-84.04 618,-74.04 614.5,-84.04 621.5,-84.04"/>
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-<title>u11&#45;&gt;u5</title>
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-<text text-anchor="middle" x="627" y="-602.25" font-family="Times-Roman" font-size="14.00">GHCup</text>
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-<g id="edge4" class="edge">
-<title>u0&#45;&gt;u1</title>
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-<title>u0&#45;&gt;u14</title>
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-<polygon fill="black" stroke="black" points="430.75,-238.25 420.45,-235.78 426.95,-244.14 430.75,-238.25"/>
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-<polygon fill="black" stroke="black" points="358.91,-236.36 367.66,-230.38 357.09,-229.6 358.91,-236.36"/>
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-<title>u18&#45;&gt;u5</title>
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-<polygon fill="black" stroke="black" points="112.5,-328.99 109,-318.99 105.5,-328.99 112.5,-328.99"/>
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-<text text-anchor="middle" x="627" y="-686.25" font-family="Times-Roman" font-size="14.00">Validate</text>
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-<polygon fill="black" stroke="black" points="630.5,-634.04 627,-624.04 623.5,-634.04 630.5,-634.04"/>
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-</svg>
--- a/docs/os-windows.svg
+++ b/docs/os-windows.svg
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<!-- Created with Inkscape (http://www.inkscape.org/) by Marsupilami -->
-<svg
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   version="1.1"
-   width="766"
-   height="768"
-   viewBox="-2.61977004 -2.61977004 92.56520808 92.83416708"
-   id="svg8375">
-  <defs
-     id="defs8377" />
-  <path
-     d="M 0,12.40183 35.68737,7.5416 35.70297,41.96435 0.03321,42.16748 z m 35.67037,33.52906 0.0277,34.45332 -35.66989,-4.9041 -0.002,-29.77972 z M 39.99644,6.90595 87.31462,0 l 0,41.527 -47.31818,0.37565 z M 87.32567,46.25471 87.31457,87.59463 39.9964,80.91625 39.9301,46.17767 z"
-     id="path13" />
-</svg>
-<!-- version: 20110311, original size: 87.325668 87.594627, border: 3% -->
--- a/docs/overrides/base.html
+++ b/docs/overrides/base.html
@@ -1,201 +0,0 @@
-<!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(){
-            (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
-            m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
-            })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
-
-            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/data/metadata/ghcup-0.0.1.json
+++ b/data/metadata/ghcup-0.0.1.json
--- a/data/metadata/ghcup-0.0.2.json
+++ b/data/metadata/ghcup-0.0.2.json
--- a/ghcup.cabal
+++ b/ghcup.cabal
@@ -1,54 +1,284 @@
 cabal-version:      3.0
 name:               ghcup
-version:            0.1.17.2
-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
+version:            0.1.4
+synopsis:           ghc toolchain installer as an exe/library
 description:
  A rewrite of the shell script ghcup, for providing
  a more stable user experience and exposing an API.

+homepage:           https://gitlab.haskell.org/haskell/ghcup-hs
+bug-reports:        https://gitlab.haskell.org/haskell/ghcup-hs/issues
+license:            LGPL-3.0-only
+license-file:       LICENSE
+author:             Julian Ospald
+maintainer:         hasufell@posteo.de
+copyright:          Julian Ospald 2020
 category:           System
 build-type:         Simple
-extra-doc-files:
-  data/config.yaml
-  data/metadata/ghcup-0.0.4.yaml
-  data/metadata/ghcup-0.0.5.yaml
-  data/metadata/ghcup-0.0.6.yaml
-  CHANGELOG.md
-  README.md
-
-extra-source-files:
-  data/build_mk/cross
-  data/build_mk/default
-  test/golden/GHCupInfo.json
+extra-source-files: CHANGELOG.md

 source-repository head
  type:     git
  location: https://gitlab.haskell.org/haskell/ghcup-hs.git

-flag tui
-  description:
-    Build the brick powered tui (ghcup tui). This is disabled on windows.
-
+flag Curl
+  description: Use curl instead of http-io-streams for download
  default:     False
  manual:      True

-flag internal-downloader
-  description:
-    Compile the internal downloader, which links against OpenSSL. This is disabled on windows.
+common HsOpenSSL
+  build-depends: HsOpenSSL >=0.11.4.18

-  default:     False
-  manual:      True
+common aeson
+  build-depends: aeson >=1.4
+
+common aeson-pretty
+  build-depends: aeson-pretty >=0.8.8
+
+common ascii-string
+  build-depends: ascii-string >=1.0
+
+common async
+  build-depends: async >=0.8
+
+common base
+  build-depends: base >=4.12 && <5
+
+common base16-bytestring
+  build-depends: base16-bytestring >= 0.1.1.6
+
+common binary
+  build-depends: binary >=0.8.6.0
+
+common bytestring
+  build-depends: bytestring >=0.10
+
+common bz2
+  build-depends: bz2 >=0.5.0.5
+
+common case-insensitive
+  build-depends: case-insensitive >=1.2.1.0
+
+common concurrent-output
+  build-depends: concurrent-output >=1.10.11
+
+common containers
+  build-depends: containers >=0.6
+
+common cryptohash-sha256
+  build-depends: cryptohash-sha256 >= 0.11.101.0
+
+common generics-sop
+  build-depends: generics-sop >=0.5
+
+common haskus-utils-types
+  build-depends: haskus-utils-types >=1.5
+
+common haskus-utils-variant
+  build-depends: haskus-utils-variant >=3.0
+
+common hpath
+  build-depends: hpath >=0.11
+
+common hpath-directory
+  build-depends: hpath-directory >=0.13.3
+
+common hpath-filepath
+  build-depends: hpath-filepath >=0.10.3
+
+common hpath-io
+  build-depends: hpath-io >=0.13.1
+
+common hpath-posix
+  build-depends: hpath-posix >=0.13.2
+
+common http-io-streams
+  build-depends: http-io-streams >=0.1.2.0
+
+common io-streams
+  build-depends: io-streams >=1.5
+
+common language-bash
+  build-depends: language-bash >=0.9
+
+common lzma
+  build-depends: lzma >=0.0.0.3
+
+common megaparsec
+  build-depends: megaparsec >=8.0.0
+
+common monad-logger
+  build-depends: monad-logger >=0.3.31
+
+common mtl
+  build-depends: mtl >=2.2
+
+common optics
+  build-depends: optics >=0.2
+
+common optics-vl
+  build-depends: optics-vl >=0.2
+
+common optparse-applicative
+  build-depends: optparse-applicative >=0.15.1.0
+
+common parsec
+  build-depends: parsec >=3.1
+
+common pretty-terminal
+  build-depends: pretty-terminal >=0.1.0.0
+
+common regex-posix
+  build-depends: regex-posix >=0.96
+
+common resourcet
+  build-depends: resourcet >=1.2.2
+
+common safe
+  build-depends: safe >=0.3.18
+
+common safe-exceptions
+  build-depends: safe-exceptions >=0.1
+
+common streamly
+  build-depends: streamly >=0.7.1
+
+common streamly-posix
+  build-depends: streamly-posix >=0.1.0.0
+
+common streamly-bytestring
+  build-depends: streamly-bytestring >=0.1.2
+
+common strict-base
+  build-depends: strict-base >=0.4
+
+common string-interpolate
+  build-depends: string-interpolate >=0.2.0.0
+
+common table-layout
+  build-depends: table-layout >=0.8
+
+common tar-bytestring
+  build-depends: tar-bytestring >=0.6.3.1
+
+common template-haskell
+  build-depends: template-haskell >=2.7
+
+common terminal-progress-bar
+  build-depends: terminal-progress-bar >=0.4.1
+
+common text
+  build-depends: text >=1.2
+
+common time
+  build-depends: time >=1.9.3
+
+common transformers
+  build-depends: transformers >=0.5
+
+common unix
+  build-depends: unix >=2.7
+
+common unix-bytestring
+  build-depends: unix-bytestring >=0.3
+
+common uri-bytestring
+  build-depends: uri-bytestring >=0.3.2.2
+
+common utf8-string
+  build-depends: utf8-string >=1.0
+
+common vector
+  build-depends: vector >=0.12
+
+common versions
+  build-depends: versions >=3.5
+
+common waargonaut
+  build-depends: waargonaut >=0.8
+
+common word8
+  build-depends: word8 >=0.1.3
+
+common zlib
+  build-depends: zlib >=0.6.2.1
+
+common config
+  default-language:   Haskell2010
+  ghc-options:
+    -Wall -fwarn-tabs -fwarn-incomplete-uni-patterns
+    -fwarn-incomplete-record-updates -threaded
+
+  default-extensions:
+    LambdaCase
+    MultiWayIf
+    PackageImports
+    RecordWildCards
+    ScopedTypeVariables
+    Strict
+    StrictData
+    TupleSections

 library
+  import:
+    config
+    , base
+    , base16-bytestring
+    , aeson
+    , ascii-string
+    , async
+    , binary
+    , bytestring
+    , bz2
+    , case-insensitive
+    , concurrent-output
+    , containers
+    , cryptohash-sha256
+    , generics-sop
+    , haskus-utils-types
+    , haskus-utils-variant
+    , hpath
+    , hpath-directory
+    , hpath-filepath
+    , hpath-io
+    , hpath-posix
+    , language-bash
+    , lzma
+    , megaparsec
+    , monad-logger
+    , mtl
+    , optics
+    , optics-vl
+    , parsec
+    , pretty-terminal
+    , regex-posix
+    , resourcet
+    , safe
+    , safe-exceptions
+    , streamly
+    , streamly-posix
+    , streamly-bytestring
+    , strict-base
+    , string-interpolate
+    , tar-bytestring
+    , template-haskell
+    , text
+    , time
+    , transformers
+    , unix
+    , unix-bytestring
+    , uri-bytestring
+    , utf8-string
+    , vector
+    , versions
+    , word8
+    , zlib
+
  exposed-modules:
    GHCup
+    GHCup.Data.GHCupDownloads
+    GHCup.Data.GHCupInfo
+    GHCup.Data.ToolRequirements
    GHCup.Download
    GHCup.Download.Utils
    GHCup.Errors
@@ -58,9 +288,9 @@ library
    GHCup.Types.JSON
    GHCup.Types.Optics
    GHCup.Utils
+    GHCup.Utils.Bash
    GHCup.Utils.Dirs
    GHCup.Utils.File
-    GHCup.Utils.File.Common
    GHCup.Utils.Logger
    GHCup.Utils.MegaParsec
    GHCup.Utils.Prelude
@@ -68,264 +298,91 @@ library
    GHCup.Utils.Version.QQ
    GHCup.Version

-  hs-source-dirs:     lib
-  other-modules:      Paths_ghcup
-  autogen-modules:    Paths_ghcup
-  default-language:   Haskell2010
-  default-extensions:
-    DeriveGeneric
-    LambdaCase
-    MultiWayIf
-    NamedFieldPuns
-    PackageImports
-    QuasiQuotes
-    RecordWildCards
-    ScopedTypeVariables
-    StrictData
-    TupleSections
-    TypeApplications
-    TypeFamilies
-    ViewPatterns
+  -- other-modules:
+  -- other-extensions:
+  hs-source-dirs:  lib

-  ghc-options:
-    -Wall -fwarn-tabs -fwarn-incomplete-uni-patterns
-    -fwarn-incomplete-record-updates
-
-  build-depends:
-    , aeson                 >=1.4
-    , async                 >=0.8        && <2.3
-    , 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
-    , 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
-    , filepath              ^>=1.4.2.1
-    , haskus-utils-types    ^>=1.5
-    , haskus-utils-variant  >=3.0        && <3.2
-    , HsYAML-aeson          ^>=0.2.0.0
-    , libarchive            ^>=3.0.3.0
-    , lzma-static           ^>=5.2.5.3
-    , megaparsec            >=8.0.0      && <9.1
-    , mtl                   ^>=2.2
-    , optics                ^>=0.4
-    , os-release            ^>=1.0.0
-    , pretty                ^>=1.1.3.1
-    , pretty-terminal       ^>=0.1.0.0
-    , regex-posix           ^>=0.96
-    , resourcet             ^>=1.2.2
-    , safe                  ^>=0.3.18
-    , safe-exceptions       ^>=0.1
-    , split                 ^>=0.2.3.4
-    , strict-base           ^>=0.4
-    , template-haskell      >=2.7        && <2.18
-    , temporary             ^>=1.3
-    , text                  ^>=1.2.4.0
-    , time                  ^>=1.9.3
-    , transformers          ^>=0.5
-    , unliftio-core         ^>=0.2.0.1
-    , unordered-containers  ^>=0.2.10.0
-    , uri-bytestring        ^>=0.3.2.2
-    , vector                ^>=0.12
-    , versions              >=4.0.1      && <5.1
-    , word8                 ^>=0.1.3
-    , zlib                  ^>=0.6.2.2
-
-  if (flag(internal-downloader) && !os(windows))
+  if !flag(curl)
+    import:
+      , HsOpenSSL
+      , http-io-streams
+      , io-streams
+      , terminal-progress-bar
    exposed-modules: GHCup.Download.IOStreams
-    cpp-options:     -DINTERNAL_DOWNLOADER
-    build-depends:
-      , HsOpenSSL              >=0.11.4.18
-      , http-io-streams        >=0.1.2.0
-      , io-streams             >=1.5.2.1
-      , terminal-progress-bar  >=0.4.1
-
-  if os(windows)
-    cpp-options:   -DIS_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
-      System.Console.Terminal.Common
-      System.Console.Terminal.Posix
-
-    build-depends:
-      , bz2              >=0.5.0.5 && <1.1
-      , unix             ^>=2.7
-      , unix-bytestring  ^>=0.3.7.3
-
-  if (flag(tui) && !os(windows))
-    cpp-options:   -DBRICK
-    build-depends: vty >=5.28.2 && <5.34
+    cpp-options:     -DCURL

 executable ghcup
-  main-is:            Main.hs
-  other-modules:      GHCup.OptParse.Install
-                      GHCup.OptParse.Common
-                      GHCup.OptParse.Set
-                      GHCup.OptParse.UnSet
-                      GHCup.OptParse.Rm
-                      GHCup.OptParse.Compile
-                      GHCup.OptParse.Config
-                      GHCup.OptParse.Whereis
-                      GHCup.OptParse.List
-                      GHCup.OptParse.DInfo
-                      GHCup.OptParse.Upgrade
-                      GHCup.OptParse.ToolRequirements
-                      GHCup.OptParse.ChangeLog
-                      GHCup.OptParse.Nuke
-                      GHCup.OptParse.Prefetch
-                      GHCup.OptParse.GC
-                      GHCup.OptParse
-  hs-source-dirs:     app/ghcup
-  default-language:   Haskell2010
-  default-extensions:
-    LambdaCase
-    MultiWayIf
-    NamedFieldPuns
-    PackageImports
-    RecordWildCards
-    ScopedTypeVariables
-    StrictData
-    TupleSections
+  import:
+    config
+    , base
+    , bytestring
+    , containers
+    , haskus-utils-variant
+    , hpath
+    , hpath-io
+    , megaparsec
+    , monad-logger
+    , mtl
+    , optparse-applicative
+    , pretty-terminal
+    , resourcet
+    , safe
+    , string-interpolate
+    , table-layout
+    , template-haskell
+    , text
+    , uri-bytestring
+    , utf8-string
+    , versions

-  ghc-options:
-    -Wall -fwarn-tabs -fwarn-incomplete-uni-patterns
-    -fwarn-incomplete-record-updates -threaded
+  --
+  main-is:          Main.hs

-  build-depends:
-    , aeson                 >=1.4
-    , aeson-pretty          ^>=0.8.8
-    , async                 ^>=2.2.3
-    , base                  >=4.13     && <5
-    , bytestring            ^>=0.10
-    , cabal-plan            ^>=0.7.2
-    , containers            ^>=0.6
-    , deepseq               ^>=1.4
-    , filepath              ^>=1.4.2.1
-    , ghcup
-    , haskus-utils-variant  >=3.0      && <3.2
-    , HsYAML-aeson          ^>=0.2.0.0
-    , libarchive            ^>=3.0.3.0
-    , megaparsec            >=8.0.0    && <9.1
-    , mtl                   ^>=2.2
-    , optparse-applicative  >=0.15.1.0 && <0.17
-    , pretty                ^>=1.1.3.1
-    , pretty-terminal       ^>=0.1.0.0
-    , resourcet             ^>=1.2.2
-    , safe                  ^>=0.3.18
-    , safe-exceptions       ^>=0.1
-    , template-haskell      >=2.7      && <2.18
-    , text                  ^>=1.2.4.0
-    , uri-bytestring        ^>=0.3.2.2
-    , utf8-string           ^>=1.0
-    , versions              >=4.0.1    && <5.1
-
-  if flag(internal-downloader)
-    cpp-options: -DINTERNAL_DOWNLOADER
-
-  if (flag(tui) && !os(windows))
-    cpp-options:   -DBRICK
-    other-modules: BrickMain
-    build-depends:
-      , brick         ^>=0.64
-      , transformers  ^>=0.5
-      , vector        ^>=0.12
-      , vty           >=5.28.2 && <5.34
-
-  if os(windows)
-    cpp-options: -DIS_WINDOWS
+  -- other-modules:
+  -- other-extensions:
+  build-depends:    ghcup
+  hs-source-dirs:   app/ghcup
+  default-language: Haskell2010

 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
-    StrictData
-    TupleSections
-    TypeApplications
-    TypeFamilies
-    ViewPatterns
+  import:
+    config
+    , base
+    , aeson
+    , aeson-pretty
+    , bytestring
+    , containers
+    , haskus-utils-variant
+    , hpath
+    , monad-logger
+    , mtl
+    , optics
+    , optparse-applicative
+    , pretty-terminal
+    , resourcet
+    , safe-exceptions
+    , string-interpolate
+    , table-layout
+    , text
+    , transformers
+    , uri-bytestring
+    , utf8-string
+    , versions

-  ghc-options:
-    -Wall -fwarn-tabs -fwarn-incomplete-uni-patterns
-    -fwarn-incomplete-record-updates -threaded
+  --
+  main-is:          Main.hs
+  other-modules:
+    Validate

-  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
-    , HsYAML-aeson          ^>=0.2.0.0
-    , libarchive            ^>=3.0.3.0
-    , mtl                   ^>=2.2
-    , optics                ^>=0.4
-    , 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
-    , text                  ^>=1.2.4.0
-    , transformers          ^>=0.5
-    , versions              >=4.0.1    && <5.1
+  -- other-extensions:
+  build-depends:    ghcup
+  hs-source-dirs:   app/ghcup-gen
+  default-language: Haskell2010

 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
-    GHCup.Types.JSONSpec
-    Spec
-
-  default-language:   Haskell2010
-  default-extensions:
-    LambdaCase
-    MultiWayIf
-    PackageImports
-    RecordWildCards
-    ScopedTypeVariables
-    TupleSections
-
-  ghc-options:
-    -Wall -fwarn-tabs -fwarn-incomplete-uni-patterns
-    -fwarn-incomplete-record-updates
-
-  build-depends:
-    , base                      >=4.13    && <5
-    , bytestring                ^>=0.10
-    , containers                ^>=0.6
-    , generic-arbitrary         ^>=0.1.0
-    , ghcup
-    , hspec                     ^>=2.7.10
-    , hspec-golden-aeson        ^>=0.9
-    , QuickCheck                ^>=2.14.1
-    , quickcheck-arbitrary-adt  ^>=0.3.1.0
-    , text                      ^>=1.2.4.0
-    , uri-bytestring            ^>=0.3.2.2
-    , versions                  >=4.0.1   && <5.1
+  default-language: Haskell2010
+  type:             exitcode-stdio-1.0
+  hs-source-dirs:   test
+  main-is:          MyLibTest.hs
+  build-depends:    base >=4.12.0.0
--- a/hie.yaml
+++ b/hie.yaml
@@ -1,10 +0,0 @@
-cradle:
-  cabal:
-  - component: "ghcup:lib:ghcup"
-    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/lib/GHCup/Data/GHCupDownloads.hs
+++ b/lib/GHCup/Data/GHCupDownloads.hs
--- a/lib/GHCup/Data/GHCupInfo.hs
+++ b/lib/GHCup/Data/GHCupInfo.hs
@@ -0,0 +1,11 @@
+module GHCup.Data.GHCupInfo where
+
+import           GHCup.Data.GHCupDownloads
+import           GHCup.Data.ToolRequirements
+import           GHCup.Types
+
+
+ghcupInfo :: GHCupInfo
+ghcupInfo = GHCupInfo { _toolRequirements = toolRequirements
+                      , _ghcupDownloads   = ghcupDownloads
+                      }
--- a/Show More
+++ b/Show More