Merge branch 'github-actions'

Switch to github actions wrt #178 and #159
Add build-tool-depends: hspec-discover:hspec-discover
2021-07-13 17:26:03 +02:00 · 2021-07-13 17:25:42 +02:00 · 2021-07-13 17:25:13 +02:00 · 2021-07-13 15:51:54 +02:00 · 2021-07-13 15:42:20 +02:00 · 2021-07-13 15:26:43 +02:00
56 changed files with 17577 additions and 17686 deletions
--- a/.github/release.yaml
+++ b/.github/release.yaml
@@ -0,0 +1,109 @@
+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
@@ -0,0 +1,109 @@
+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/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,7 +7,7 @@ variables:
  GIT_SSL_NO_VERIFY: "1"

  # Commit of ghc/ci-images repository from which to pull Docker images
-  DOCKER_REV: 1ac7f435c9312f10422a82d304194778378e2a1a
+  DOCKER_REV: 8d0224e6b2a08157649651e69302380b2bd24e11

 ############################################################
 # CI Step
@@ -20,6 +20,7 @@ variables:
  variables:
    OS: "LINUX"
    ARCH: "64"
+    CABAL_DIR: "$CI_PROJECT_DIR/cabal"

 .alpine:64bit:
  image: "alpine:3.12"
@@ -28,6 +29,7 @@ variables:
  variables:
    OS: "LINUX"
    ARCH: "64"
+    CABAL_DIR: "$CI_PROJECT_DIR/cabal"

 .alpine:32bit:
  image: "i386/alpine:3.12"
@@ -36,22 +38,25 @@ variables:
  variables:
    OS: "LINUX"
    ARCH: "32"
+    CABAL_DIR: "$CI_PROJECT_DIR/cabal"

 .linux:armv7:
-  image: "arm32v7/fedora"
+  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"

 .linux:aarch64:
-  image: "arm64v8/fedora"
+  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"

 .darwin:
  tags:
@@ -59,6 +64,15 @@ variables:
  variables:
    OS: "DARWIN"
    ARCH: "64"
+    CABAL_DIR: "$CI_PROJECT_DIR/cabal"
+
+.darwin:aarch64:
+  tags:
+    - aarch64-darwin-m1
+  variables:
+    OS: "DARWIN"
+    ARCH: "ARM64"
+    CABAL_DIR: "$CI_PROJECT_DIR/cabal"

 .freebsd:
  tags:
@@ -66,22 +80,25 @@ variables:
  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"

 .root_cleanup:
  after_script:
-    - 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
+    - bash ./.gitlab/after_script.sh

 .test_ghcup_version:
  script:
-    - ./.gitlab/script/ghcup_version.sh
+    - bash ./.gitlab/script/ghcup_version.sh
  variables:
-    JSON_VERSION: "0.0.4"
+    JSON_VERSION: "0.0.5"
  artifacts:
    expire_in: 2 week
    paths:
@@ -107,14 +124,14 @@ variables:
    - .test_ghcup_version
    - .linux:armv7
  before_script:
-    - ./.gitlab/before_script/linux/install_deps_manual.sh
+    - ./.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_manual.sh
+    - ./.gitlab/before_script/linux/install_deps.sh

 .test_ghcup_version:darwin:
  extends:
@@ -124,6 +141,32 @@ variables:
  before_script:
    - ./.gitlab/before_script/darwin/install_deps.sh

+.test_ghcup_version:darwin:aarch64:
+  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:freebsd:
  extends:
    - .test_ghcup_version
@@ -132,9 +175,18 @@ variables:
  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
+
 .release_ghcup:
  script:
-    - ./.gitlab/script/ghcup_release.sh
+    - bash ./.gitlab/script/ghcup_release.sh
  artifacts:
    expire_in: 2 week
    paths:
@@ -142,7 +194,7 @@ variables:
  only:
    - tags
  variables:
-    JSON_VERSION: "0.0.4"
+    JSON_VERSION: "0.0.5"

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

@@ -165,10 +217,27 @@ test:linux:bootstrap_script:
  script:
    - ./.gitlab/script/ghcup_bootstrap.sh
  variables:
-    GHC_VERSION: "8.10.4"
+    GHC_VERSION: "8.10.5"
    CABAL_VERSION: "3.4.0.0"
  extends:
    - .debian
+    - .root_cleanup
+  needs: []
+
+test:windows:bootstrap_powershell_script:
+  stage: test
+  script:
+    - ./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: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
+  extends:
+    - .windows
  needs: []

 ######## linux test ########
@@ -177,7 +246,7 @@ test:linux:recommended:
  stage: test
  extends: .test_ghcup_version:linux
  variables:
-    GHC_VERSION: "8.10.4"
+    GHC_VERSION: "8.10.5"
    CABAL_VERSION: "3.4.0.0"
  needs: []

@@ -185,7 +254,7 @@ test:linux:latest:
  stage: test
  extends: .test_ghcup_version:linux
  variables:
-    GHC_VERSION: "8.10.4"
+    GHC_VERSION: "9.0.1"
    CABAL_VERSION: "3.4.0.0"
  needs: []

@@ -195,7 +264,7 @@ test:linux:recommended:32bit:
  stage: test
  extends: .test_ghcup_version:linux32
  variables:
-    GHC_VERSION: "8.10.4"
+    GHC_VERSION: "8.10.5"
    CABAL_VERSION: "3.2.0.0"
  needs: []

@@ -233,10 +302,19 @@ test:mac:latest:
  stage: test
  extends: .test_ghcup_version:darwin
  variables:
-    GHC_VERSION: "8.10.4"
+    GHC_VERSION: "9.0.1"
    CABAL_VERSION: "3.4.0.0"
  needs: []

+test:mac:recommended:aarch64:
+  stage: test
+  extends: .test_ghcup_version:darwin:aarch64
+  variables:
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
+  needs: []
+  allow_failure: true
+

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

@@ -250,16 +328,15 @@ test:freebsd:recommended:
  when: manual
  needs: []

-test:freebsd:latest:
-  stage: test
-  extends: .test_ghcup_version:freebsd
-  variables:
-    GHC_VERSION: "8.10.4"
-    CABAL_VERSION: "3.4.0.0"
-  allow_failure: true # freebsd runners are unreliable
-  when: manual
-  needs: []
+######## windows test ########

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

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

@@ -273,7 +350,7 @@ release:linux:64bit:
    - ./.gitlab/before_script/linux/alpine/install_deps.sh
  variables:
    ARTIFACT: "x86_64-linux-ghcup"
-    GHC_VERSION: "8.10.4"
+    GHC_VERSION: "8.10.5"
    CABAL_VERSION: "3.4.0.0"


@@ -287,7 +364,7 @@ release:linux:32bit:
    - ./.gitlab/before_script/linux/alpine/install_deps.sh
  variables:
    ARTIFACT: "i386-linux-ghcup"
-    GHC_VERSION: "8.10.4"
+    GHC_VERSION: "8.10.5"
    CABAL_VERSION: "3.2.0.0"

 release:linux:armv7:
@@ -297,7 +374,7 @@ release:linux:armv7:
    - .linux:armv7
    - .release_ghcup
  before_script:
-    - ./.gitlab/before_script/linux/install_deps_manual.sh
+    - ./.gitlab/before_script/linux/install_deps.sh
  variables:
    ARTIFACT: "armv7-linux-ghcup"
    GHC_VERSION: "8.10.4"
@@ -310,7 +387,7 @@ release:linux:aarch64:
    - .linux:aarch64
    - .release_ghcup
  before_script:
-    - ./.gitlab/before_script/linux/install_deps_manual.sh
+    - ./.gitlab/before_script/linux/install_deps.sh
  variables:
    ARTIFACT: "aarch64-linux-ghcup"
    GHC_VERSION: "8.10.4"
@@ -329,16 +406,44 @@ release:darwin:
    - ./.gitlab/before_script/darwin/install_deps.sh
  variables:
    ARTIFACT: "x86_64-apple-darwin-ghcup"
-    GHC_VERSION: "8.10.4"
+    GHC_VERSION: "8.10.5"
    CABAL_VERSION: "3.4.0.0"
    MACOSX_DEPLOYMENT_TARGET: "10.7"

+release:darwin:aarch64:
+  stage: release
+  needs: ["test:mac:recommended:aarch64"]
+  extends:
+    - .darwin:aarch64
+    - .release_ghcup
+    - .root_cleanup
+  script: |
+    set -Eeuo pipefail
+    function runInNixShell() {
+      time nix-shell .gitlab/shell.nix \
+        -I nixpkgs=https://github.com/angerman/nixpkgs/archive/75f7281738b.tar.gz \
+        --argstr system "aarch64-darwin" \
+        --pure \
+        --keep CI_PROJECT_DIR --keep MAKE_ARGS --keep HADRIAN_ARGS --keep CABAL_CACHE \
+        --keep MACOSX_DEPLOYMENT_TARGET \
+        --keep JSON_VERSION --keep ARTIFACT \
+        --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: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
+    MACOSX_DEPLOYMENT_TARGET: "10.7"
+  allow_failure: true
+

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

 release:freebsd:
  stage: release
-  needs: ["test:freebsd:recommended", "test:freebsd:latest"]
+  needs: ["test:freebsd:recommended"]
  extends:
    - .freebsd
    - .release_ghcup
@@ -347,9 +452,25 @@ release:freebsd:
    - ./.gitlab/before_script/freebsd/install_deps.sh
  variables:
    ARTIFACT: "x86_64-portbld-freebsd-ghcup"
-    GHC_VERSION: "8.10.4"
+    GHC_VERSION: "8.10.5"
    CABAL_VERSION: "3.4.0.0"
+  allow_failure: true

+######## windows release ########
+
+release:windows:
+  stage: release
+  needs: ["test:windows:recommended"]
+  extends:
+    - .windows
+    - .release_ghcup
+    - .root_cleanup
+  before_script:
+    - bash ./.gitlab/before_script/windows/install_deps.sh
+  variables:
+    ARTIFACT: "x86_64-mingw64-ghcup"
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"

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

@@ -362,7 +483,7 @@ hlint:
  script:
    - ./.gitlab/script/hlint.sh
  variables:
-    GHC_VERSION: "8.10.4"
+    GHC_VERSION: "8.10.5"
    CABAL_VERSION: "3.4.0.0"
    JSON_VERSION: "0.0.4"
  allow_failure: true
--- a/.gitlab/after_script.sh
+++ b/.gitlab/after_script.sh
@@ -0,0 +1,15 @@
+#!/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
@@ -6,12 +6,27 @@ set -eux

 mkdir -p "${TMPDIR}"

-curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-apple-darwin-ghcup > ./ghcup-bin
-chmod +x ghcup-bin
+if [ $ARCH = 'ARM64' ] ; then
+	curl -sSfL https://downloads.haskell.org/~ghcup/0.1.15.1/aarch64-apple-darwin-ghcup-0.1.15.1 > ./ghcup-bin
+	chmod +x ghcup-bin
+else
+	curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-apple-darwin-ghcup > ./ghcup-bin
+	chmod +x ghcup-bin
+	./ghcup-bin upgrade -i -f
+fi

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

+if [ $ARCH = 'ARM64' ] ; then
+	cabal update
+	mkdir vendored
+	cd vendored
+	cabal unpack network-3.1.2.1
+	cd network*
+	autoreconf -fi
+	cd ../..
+fi
+
 exit 0
--- a/.gitlab/before_script/linux/install_deps.sh
+++ b/.gitlab/before_script/linux/install_deps.sh
@@ -7,13 +7,60 @@ set -eux
 mkdir -p "${TMPDIR}"

 sudo apt-get update -y
-sudo apt-get install -y libnuma-dev zlib1g-dev libgmp-dev libgmp10 libssl-dev liblzma-dev libbz2-dev git wget
+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

-curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-linux-ghcup > ./ghcup-bin
-chmod +x ghcup-bin
+case "${ARCH}" in
+	ARM*)
+		case "${ARCH}" in
+			"ARM")
+				ghc_url=https://downloads.haskell.org/~ghc/${GHC_VERSION}/ghc-${GHC_VERSION}-armv7-deb10-linux.tar.xz
+				cabal_url=home.smart-cactus.org/~ben/cabal-install-${CABAL_VERSION}-armv7-linux-bootstrapped.tar.xz
+				;;
+			"ARM64")
+				ghc_url=https://downloads.haskell.org/~ghc/${GHC_VERSION}/ghc-${GHC_VERSION}-aarch64-deb10-linux.tar.xz
+				cabal_url=https://downloads.haskell.org/~cabal/cabal-install-${CABAL_VERSION}/cabal-install-${CABAL_VERSION}-aarch64-ubuntu-18.04.tar.xz
+				;;
+			*)
+				exit 1 ;;
+		esac

-./ghcup-bin upgrade -i -f
-./ghcup-bin install ${GHC_VERSION}
-./ghcup-bin set ${GHC_VERSION}
-./ghcup-bin install-cabal ${CABAL_VERSION}
+		mkdir -p "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin
+
+		curl -O "${ghc_url}"
+		tar -xf ghc-*.tar.*
+		cd ghc-${GHC_VERSION}
+		./configure --prefix="${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/ghc/${GHC_VERSION}
+		make install
+		for i in "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/ghc/${GHC_VERSION}/bin/*-${GHC_VERSION} ; do
+			ln -s "${i}" "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/${i##*/}
+		done
+		for x in "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/*-${GHC_VERSION} ; do
+			ln -s ${x##*/} ${x%-${GHC_VERSION}}
+		done
+		cd ..
+		rm -rf ghc-${GHC_VERSION} ghc-*.tar.*
+		unset x i
+
+		mkdir cabal-install
+		cd cabal-install
+		curl -O "${cabal_url}"
+		tar -xf cabal-install-*
+		mv cabal "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/cabal
+		cd ..
+		rm -rf cabal-install
+
+		;;
+	*) 
+		url=https://downloads.haskell.org/~ghcup/x86_64-linux-ghcup
+
+		curl -sSfL "${url}" > ./ghcup-bin
+		chmod +x ghcup-bin
+
+		./ghcup-bin upgrade -i -f
+		./ghcup-bin install ${GHC_VERSION}
+		./ghcup-bin set ${GHC_VERSION}
+		./ghcup-bin install-cabal ${CABAL_VERSION}
+
+		;;
+esac

--- a/.gitlab/before_script/linux/install_deps_manual.sh
+++ b/.gitlab/before_script/linux/install_deps_manual.sh
@@ -1,64 +0,0 @@
-#!/bin/sh
-
-set -eux
-
-. "$( cd "$(dirname "$0")" ; pwd -P )/../../ghcup_env"
-
-mkdir -p "${TMPDIR}"
-
-ednf() {
-	case "${ARCH}" in
-		"ARM")
-			sudo dnf -y --forcearch armv7hl "$@"
-			;;
-		"ARM64")
-			sudo dnf -y --forcearch aarch64 "$@"
-			;;
-		*) exit 1 ;;
-	esac
-}
-
-ednf update
-ednf install gcc gcc-c++ gmp gmp-devel make ncurses ncurses-devel xz xz-devel perl zlib zlib-devel openssl-devel openssl-libs openssl libffi libffi-devel lbzip2 lbzip2-utils bzip2-devel
-if [ "${ARCH}" = "ARM64" ] ; then
-	ednf install numactl numactl-libs numactl-devel
-fi
-ednf install bash wget curl git tar
-ednf install llvm9.0 llvm9.0-devel llvm9.0-libs llvm9.0-static
-
-case "${ARCH}" in
-	"ARM")
-		ghc_url=https://downloads.haskell.org/~ghc/${GHC_VERSION}/ghc-${GHC_VERSION}-armv7-deb10-linux.tar.xz
-		cabal_url=home.smart-cactus.org/~ben/cabal-install-${CABAL_VERSION}-armv7-linux-bootstrapped.tar.xz
-		;;
-	"ARM64")
-		ghc_url=https://downloads.haskell.org/~ghc/${GHC_VERSION}/ghc-${GHC_VERSION}-aarch64-deb10-linux.tar.xz
-		cabal_url=https://downloads.haskell.org/~cabal/cabal-install-${CABAL_VERSION}/cabal-install-${CABAL_VERSION}-aarch64-ubuntu-18.04.tar.xz
-		;;
-	*) exit 1 ;;
-esac
-
-mkdir -p "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin
-
-curl -O "${ghc_url}"
-tar -xf ghc-*.tar.*
-cd ghc-${GHC_VERSION}
-./configure --prefix="${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/ghc/${GHC_VERSION}
-make install
-for i in "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/ghc/${GHC_VERSION}/bin/*-${GHC_VERSION} ; do
-	ln -s "${i}" "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/${i##*/}
-done
-for x in "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/*-${GHC_VERSION} ; do
-	ln -s ${x##*/} ${x%-${GHC_VERSION}}
-done
-cd ..
-rm -rf ghc-${GHC_VERSION} ghc-*.tar.*
-unset x i
-
-mkdir cabal-install
-cd cabal-install
-curl -O "${cabal_url}"
-tar -xf cabal-install-*
-mv cabal "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/cabal
-cd ..
-rm -rf cabal-install
--- a/.gitlab/before_script/windows/install_deps.sh
+++ b/.gitlab/before_script/windows/install_deps.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+set -eux
+
+. "$( 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/0.1.15.1/x86_64-mingw64-ghcup-0.1.15.1.exe
+chmod +x ghcup.exe
+
+./ghcup.exe install ${GHC_VERSION}
+./ghcup.exe set ${GHC_VERSION}
+./ghcup.exe install-cabal ${CABAL_VERSION}
+
+rm ./ghcup.exe
+
+exit 0
--- a/.gitlab/ghcup_env
+++ b/.gitlab/ghcup_env
@@ -1,3 +1,9 @@
-export GHCUP_INSTALL_BASE_PREFIX="$CI_PROJECT_DIR"
-export PATH="$CI_PROJECT_DIR/.ghcup/bin:$CI_PROJECT_DIR/.local/bin:$PATH"
-export TMPDIR="$CI_PROJECT_DIR/tmp"
+if [ "${OS}" = "WINDOWS" ] ; then
+	export GHCUP_INSTALL_BASE_PREFIX="$CI_PROJECT_DIR"
+	export PATH="$GHCUP_INSTALL_BASE_PREFIX/ghcup/bin:$CI_PROJECT_DIR/.local/bin:$PATH"
+	export TMPDIR="$CI_PROJECT_DIR/tmp"
+else
+	export GHCUP_INSTALL_BASE_PREFIX="$CI_PROJECT_DIR"
+	export PATH="$CI_PROJECT_DIR/.ghcup/bin:$CI_PROJECT_DIR/.local/bin:/opt/llvm/bin:$PATH"
+	export TMPDIR="$CI_PROJECT_DIR/tmp"
+fi
--- a/.gitlab/script/ghcup_bootstrap.sh
+++ b/.gitlab/script/ghcup_bootstrap.sh
@@ -7,7 +7,7 @@ set -eux
 mkdir -p "$CI_PROJECT_DIR"/.local/bin

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

 eghcup() {
--- a/.gitlab/script/ghcup_release.sh
+++ b/.gitlab/script/ghcup_release.sh
@@ -7,7 +7,7 @@ set -eux
 mkdir -p "$CI_PROJECT_DIR"/.local/bin

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

 git describe
@@ -29,18 +29,20 @@ if [ "${OS}" = "LINUX" ] ; then
 		ecabal build -w ghc-${GHC_VERSION} -ftui
 	fi
 elif [ "${OS}" = "FREEBSD" ] ; then
-	ecabal build -w ghc-${GHC_VERSION} --ghc-options='-split-sections' --constraint="zlib +bundled-c-zlib" -ftui
+	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-${GHC_VERSION} --constraint="zlib +bundled-c-zlib" --constraint="lzma +static"
 else
 	ecabal build -w ghc-${GHC_VERSION} --constraint="zlib +bundled-c-zlib" --constraint="lzma +static" -ftui
 fi

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

--- a/.gitlab/script/ghcup_version.sh
+++ b/.gitlab/script/ghcup_version.sh
@@ -6,12 +6,18 @@ set -eux

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

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

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

 git describe --always
@@ -28,31 +34,47 @@ 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-${GHC_VERSION} -finternal-downloader -ftui -ftar
 		ecabal test -w ghc-${GHC_VERSION} -finternal-downloader -ftui -ftar ghcup-test
+		ecabal haddock -w ghc-${GHC_VERSION} -finternal-downloader -ftui -ftar
 	else
 		ecabal build -w ghc-${GHC_VERSION} -finternal-downloader -ftui
 		ecabal test -w ghc-${GHC_VERSION} -finternal-downloader -ftui ghcup-test
+		ecabal haddock -w ghc-${GHC_VERSION} -finternal-downloader -ftui
 	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}
+	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

-ecabal haddock -w ghc-${GHC_VERSION} -ftar

-cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup')" .
-cp "$(ecabal new-exec -w ghc-${GHC_VERSION} --verbose=0 --offline sh -- -c 'command -v ghcup-gen')" .
-
-cp ./ghcup "$CI_PROJECT_DIR"/.local/bin/ghcup
-cp ./ghcup-gen "$CI_PROJECT_DIR"/.local/bin/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}

 ### cleanup

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

 ### manual cli based testing

@@ -62,8 +84,10 @@ ghcup-gen check -f ghcup-${JSON_VERSION}.yaml
 eghcup --numeric-version

 eghcup install ${GHC_VERSION}
+[ `$(eghcup whereis ghc ${GHC_VERSION}) --numeric-version` = "${GHC_VERSION}" ]
 eghcup set ${GHC_VERSION}
 eghcup install-cabal ${CABAL_VERSION}
+[ `$(eghcup whereis cabal ${CABAL_VERSION}) --numeric-version` = "${CABAL_VERSION}" ]

 cabal --version

@@ -75,40 +99,46 @@ eghcup list -t cabal

 ghc_ver=$(ghc --numeric-version)
 ghc --version
-ghci --version
-ghc-$(ghc --numeric-version) --version
-ghci-$(ghc --numeric-version) --version
-
-
-# test installing new ghc doesn't mess with currently set GHC
-# https://gitlab.haskell.org/haskell/ghcup-hs/issues/7
-if [ "${OS}" = "LINUX" ] ; then
-	eghcup --downloader=wget install 8.10.3
-else # test wget a bit
-	eghcup install 8.10.3
+ghc-${ghc_ver} --version
+if [ "${OS}" != "WINDOWS" ] ; then
+		ghci --version
+		ghci-${ghc_ver} --version
 fi
-[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
-eghcup set 8.10.3
-eghcup set 8.10.3
-[ "$(ghc --numeric-version)" = "8.10.3" ]
-eghcup set ${GHC_VERSION}
-[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
-eghcup rm 8.10.3
-[ "$(ghc --numeric-version)" = "${ghc_ver}" ]

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

-	eghcup install stack
-	stack --version
-elif [ "${OS}" = "LINUX" ] ; then
-	if [ "${ARCH}" = "64" ] ; then
+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 [ "${OS}" = "LINUX" ] ; then
+		eghcup --downloader=wget install 8.10.3
+	else # test wget a bit
+		eghcup install 8.10.3
+	fi
+	[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
+	eghcup set 8.10.3
+	eghcup set 8.10.3
+	[ "$(ghc --numeric-version)" = "8.10.3" ]
+	eghcup set ${GHC_VERSION}
+	[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
+	eghcup rm 8.10.3
+	[ "$(ghc --numeric-version)" = "${ghc_ver}" ]
+
+	if [ "${OS}" = "DARWIN" ] ; then
 		eghcup install hls
-		haskell-language-server-wrapper --version
+		$(eghcup whereis hls) --version

 		eghcup install stack
-		stack --version
+		$(eghcup whereis stack) --version
+	elif [ "${OS}" = "LINUX" ] ; then
+		if [ "${ARCH}" = "64" ] ; then
+			eghcup install hls
+			haskell-language-server-wrapper --version
+
+			eghcup install stack
+			stack --version
+		fi
 	fi
 fi

@@ -126,3 +156,11 @@ fi
 eghcup upgrade
 eghcup upgrade -f

+
+# nuke
+eghcup nuke
+if [ "${OS}" = "WINDOWS" ] ; then
+	[ ! -e "${GHCUP_INSTALL_BASE_PREFIX}/ghcup" ]
+else
+	[ ! -e "${GHCUP_INSTALL_BASE_PREFIX}/.ghcup" ]
+fi
--- a/.gitlab/shell.nix
+++ b/.gitlab/shell.nix
@@ -0,0 +1,89 @@
+{ system ? "aarch64-darwin"
+#, nixpkgs ? fetchTarball https://github.com/angerman/nixpkgs/archive/257cb120334.tar.gz #apple-silicon.tar.gz
+, pkgs ? import <nixpkgs> { inherit system; }
+, compiler ? if system == "aarch64-darwin" then "ghc8103Binary" else "ghc8103"
+}: pkgs.mkShell {
+  # this prevents nix from trying to write the env-vars file.
+  # we can't really, as NIX_BUILD_TOP/env-vars is not set.
+  noDumpEnvVars=1;
+
+  # stop polluting LDFLAGS with -liconv
+  dontAddExtraLibs = true;
+
+  # we need to inject ncurses into --with-curses-libraries.
+  # the real fix is to teach terminfo to use libcurses on macOS.
+  # CONFIGURE_ARGS = "--with-intree-gmp --with-curses-libraries=${pkgs.ncurses.out}/lib";
+  CONFIGURE_ARGS = "--with-intree-gmp --with-curses-libraries=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib --with-iconv-includes=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include --with-iconv-libraries=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib SH=/bin/bash";
+
+  # magic speedup pony :facepalm:
+  #
+  # nix has the ugly habbit of duplicating ld flags more than necessary.  This
+  # somewhat consolidates this.
+  shellHook = ''
+  export NIX_LDFLAGS=$(for a in $NIX_LDFLAGS; do echo $a; done |sort|uniq|xargs)
+  export NIX_LDFLAGS_FOR_TARGET=$(for a in $NIX_LDFLAGS_FOR_TARGET; do echo $a; done |sort|uniq|xargs)
+  export NIX_LDFLAGS_FOR_TARGET=$(comm -3 <(for l in $NIX_LDFLAGS_FOR_TARGET; do echo $l; done) <(for l in $NIX_LDFLAGS; do echo $l; done))
+
+
+  # Impurity hack for GHC releases.
+  #################################
+  # We don't want binary releases to depend on nix, thus we'll need to make sure we don't leak in references.
+  # GHC externally depends only on iconv and curses.  However we can't force a specific curses library for
+  # the terminfo package, as such we'll need to make sure we only look in the system path for the curses library
+  # and not pick up the tinfo from the nix provided ncurses package.
+  #
+  # We also need to force us to use the systems COREFOUNDATION, not the one that nix builds. Again this is impure,
+  # but it will allow us to have proper binary distributions.
+  #
+  # do not use nixpkgs provided core foundation
+  export NIX_COREFOUNDATION_RPATH=/System/Library/Frameworks
+  # drop curses from the LDFLAGS, we really want the system ones, not the nix ones.
+  export NIX_LDFLAGS=$(for lib in $NIX_LDFLAGS; do case "$lib" in *curses*);; *) echo -n "$lib ";; esac; done;)
+  export NIX_CFLAGS_COMPILE+=" -Wno-nullability-completeness -Wno-availability -Wno-expansion-to-defined -Wno-builtin-requires-header -Wno-unused-command-line-argument"
+
+  # unconditionally add the MacOSX.sdk and TargetConditional.h
+  export NIX_CFLAGS_COMPILE+=" -isystem /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include"
+
+  '';
+
+  nativeBuildInputs = (with pkgs; [
+    # This needs to come *before* ghc,
+    # otherwise we migth end up with the clang from
+    # the bootstrap GHC in PATH with higher priority.
+    clang_11
+    llvm_11
+
+    haskell.compiler.${compiler}
+    haskell.packages.${compiler}.cabal-install
+    haskell.packages.${compiler}.alex
+    haskell.packages.${compiler}.happy # _1_19_12 is needed for older GHCs.
+
+    automake
+    autoconf
+    m4
+
+    gmp
+    zlib.out
+    zlib.dev
+    glibcLocales
+    # locale doesn't build yet :-/
+    # locale
+
+    git
+
+    python3
+    # python3Full
+    # python3Packages.sphinx
+    perl
+
+    which
+    wget
+	curl
+    file
+
+    xz
+    xlibs.lndir
+
+    cacert ])
+  ++ (with pkgs.darwin.apple_sdk.frameworks; [ Foundation Security ]);
+}
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,37 +0,0 @@
-jobs:
-  include:
-    - os: osx
-      osx_image: xcode8
-      language: generic
-      env: ARTIFACT=x86_64-apple-darwin-10.11-ghcup
-
-    - os: osx
-      osx_image: xcode10.1
-      language: generic
-      env: ARTIFACT=x86_64-apple-darwin-10.13-ghcup
-
-    - os: osx
-      osx_image: xcode11.3
-      language: generic
-      env: ARTIFACT=x86_64-apple-darwin-10.14-ghcup
-
-  allow_failures:
-    - os: osx
-      osx_image: xcode8
-      language: generic
-      env: ARTIFACT=x86_64-apple-darwin-10.11-ghcup
-
-
-script: ".travis/build.sh"
-
-deploy:
-  provider: releases
-  api_key:
-    secure: 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
-  file: $ARTIFACT
-  on:
-    repo: haskell/ghcup-hs
-    tags: true
-  skip_cleanup: true
-  draft: true
-
--- a/.travis/build.sh
+++ b/.travis/build.sh
@@ -1,28 +0,0 @@
-#!/bin/sh
-
-set -ex
-
-mkdir -p ~/.ghcup/bin
-curl -sSfL https://downloads.haskell.org/~ghcup/x86_64-apple-darwin-ghcup > ~/.ghcup/bin/ghcup
-chmod +x ~/.ghcup/bin/ghcup
-
-export PATH="$HOME/.ghcup/bin:$PATH"
-
-ghcup install 8.10.4
-ghcup install-cabal 3.4.0.0
-ghcup set 8.10.4
-
-
-## install ghcup
-
-cabal update
-
-(
-	cd /tmp
-	cabal install --installdir="$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}"
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,11 +1,26 @@
 # Revision history for ghcup

-## 0.1.15 -- ????-??-??
+## 0.1.16 -- ????-??-??

-* Add date to GHC bindist names created by ghcup
+* Add 'nuke' subcommand wrt [#135](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/135), implemented by Arjun Kathuria
+
+## 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)
-* Add stack support
+* 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

--- a/HACKING.md
+++ b/HACKING.md
@@ -69,3 +69,7 @@ yaml files: `ghcup-<yaml-ver>.yaml`.
   Most of the `Version` parameters to functions had to be replaced with
   that and ensured the logic is consistent for cross and non-cross
   installs.
+2. This refactor added windows support wrt [#130](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/130).
+   The major changes here were switching `hpath` library out for `filepath`/`directory` (sadly) and
+   introducing a non-unix way of handling processes via the `process` library. It also introduced considerable
+   amounts of CPP wrt file handling, installation etc.
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 `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.
+macOS (aka Darwin), FreeBSD and Windows and can also bootstrap a fresh Haskell developer environment from scratch.
 It follows the unix UNIX philosophy of [do one thing and do it well](https://en.wikipedia.org/wiki/Unix_philosophy#Do_One_Thing_and_Do_It_Well).

 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).
@@ -85,7 +85,7 @@ handles your haskell packages and can demand that [a specific version](https://c
 A configuration file can be put in `~/.ghcup/config.yaml`. The default config file
 explaining all possible configurations can be found in this repo: [config.yaml](./config.yaml).

-Partial configuration is fine. Command line options always overwrite the config file settings.
+Partial configuration is fine. Command line options always override the config file settings.

 ### Manpages

@@ -123,6 +123,9 @@ Then you can control the locations via XDG environment variables as such:
 * `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:
@@ -132,6 +135,7 @@ This is the complete list of env variables that change GHCup behavior:
 * `GHCUP_INSTALL_BASE_PREFIX`: the base of ghcup (default: `$HOME`)
 * `GHCUP_CURL_OPTS`: additional options that can be passed to curl
 * `GHCUP_WGET_OPTS`: additional options that can be passed to wget
+* `GHCUP_SKIP_UPDATE_CHECK`: Skip the (possibly annoying) update check when you run a command
 * `CC`/`LD` etc.: full environment is passed to the build system when compiling GHC via GHCup

 ### Installing custom bindists
--- a/app/ghcup-gen/Main.hs
+++ b/app/ghcup-gen/Main.hs
@@ -69,13 +69,15 @@ tarballFilterP = option readm $
  long "tarball-filter" <> short 'u' <> metavar "<tool>-<version>" <> value def
    <> help "Only check certain tarballs (format: <tool>-<version>)"
  where
-    def = TarballFilter Nothing (makeRegex ("" :: String))
+    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 $ Just tool) <*> makeRegexOptsM compIgnoreCase execBlank (drop 1 v)
+          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

@@ -105,26 +107,21 @@ main :: IO ()
 main = do
  _ <- customExecParser (prefs showHelpOnError) (info (opts <**> helper) idm)
    >>= \Options {..} -> case optCommand of
-          ValidateYAML vopts -> case vopts of
-            ValidateYAMLOpts { vInput = Nothing } ->
-              B.getContents >>= valAndExit validate
-            ValidateYAMLOpts { vInput = Just StdInput } ->
-              B.getContents >>= valAndExit validate
-            ValidateYAMLOpts { vInput = Just (FileInput file) } ->
-              B.readFile file >>= valAndExit validate
-          ValidateTarballs vopts tarballFilter -> case vopts of
-            ValidateYAMLOpts { vInput = Nothing } ->
-              B.getContents >>= valAndExit (validateTarballs tarballFilter)
-            ValidateYAMLOpts { vInput = Just StdInput } ->
-              B.getContents >>= valAndExit (validateTarballs tarballFilter)
-            ValidateYAMLOpts { vInput = Just (FileInput file) } ->
-              B.readFile file >>= valAndExit (validateTarballs tarballFilter)
+          ValidateYAML vopts -> withValidateYamlOpts vopts validate
+          ValidateTarballs vopts tarballFilter -> withValidateYamlOpts vopts (validateTarballs tarballFilter)
  pure ()

 where
+  withValidateYamlOpts vopts f = case vopts of
+    ValidateYAMLOpts { vInput = Nothing } ->
+      B.getContents >>= valAndExit f
+    ValidateYAMLOpts { vInput = Just StdInput } ->
+      B.getContents >>= valAndExit f
+    ValidateYAMLOpts { vInput = Just (FileInput file) } ->
+      B.readFile file >>= valAndExit f
  valAndExit f contents = do
-    (GHCupInfo _ av) <- case Y.decodeEither' contents of
+    (GHCupInfo _ av gt) <- case Y.decodeEither' contents of
      Right r -> pure r
      Left  e -> die (color Red $ show e)
-    myLoggerT (LoggerConfig True (B.hPut stdout) (\_ -> pure ())) (f av)
+    myLoggerT (LoggerConfig True (B.hPut stdout) (\_ -> pure ())) (f av gt)
      >>= exitWith
--- a/app/ghcup-gen/Validate.hs
+++ b/app/ghcup-gen/Validate.hs
@@ -11,6 +11,7 @@ module Validate where
 import           GHCup
 import           GHCup.Download
 import           GHCup.Errors
+import           GHCup.Platform
 import           GHCup.Types
 import           GHCup.Types.Optics
 import           GHCup.Utils
@@ -22,6 +23,7 @@ import qualified Codec.Archive.Tar             as Tar
 #else
 import           Codec.Archive
 #endif
+import           Control.Applicative
 import           Control.Exception.Safe
 import           Control.Monad
 import           Control.Monad.IO.Class
@@ -66,8 +68,9 @@ addError = do

 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 --
@@ -181,7 +184,7 @@ validate dls = do
  isBase _        = False

 data TarballFilter = TarballFilter
-  { tfTool    :: Maybe Tool
+  { tfTool    :: Either GlobalTool (Maybe Tool)
  , tfVersion :: Regex
  }

@@ -191,22 +194,23 @@ validateTarballs :: ( Monad m
                    , MonadIO m
                    , MonadUnliftIO m
                    , MonadMask m
+                    , Alternative m
+                    , MonadFail m
                    )
                 => TarballFilter
                 -> GHCupDownloads
+                 -> M.Map GlobalTool DownloadInfo
                 -> m ExitCode
-validateTarballs (TarballFilter tool versionRegex) dls = do
+validateTarballs (TarballFilter etool versionRegex) dls gt = do
  ref <- liftIO $ newIORef 0

  flip runReaderT ref $ do
     -- download/verify all tarballs
-    let dlis = nubOrd $ dls ^.. each
-          %& indices (maybe (const True) (==) tool) %> each
-          %& indices (matchTest versionRegex . T.unpack . prettyVer)
-          % (viSourceDL % _Just `summing` viArch % each % each % each)
-    when (null dlis) $ $(logError) [i|no tarballs selected by filter|] *> addError
-
-    forM_ dlis downloadAll
+    let dlis = either (const []) (\tool -> nubOrd $ dls ^.. each %& indices (maybe (const True) (==) tool) %> each %& indices (matchTest versionRegex . T.unpack . prettyVer) % (viSourceDL % _Just `summing` viArch % each % each % each)) etool
+    let gdlis = nubOrd $ gt ^.. each
+    let allDls = either (const gdlis) (const dlis) etool
+    when (null allDls) $ $(logError) [i|no tarballs selected by filter|] *> addError
+    forM_ allDls downloadAll

    -- exit
    e <- liftIO $ readIORef ref
@@ -223,11 +227,21 @@ validateTarballs (TarballFilter tool versionRegex) dls = do
                                     }
  downloadAll dli = do
    dirs <- liftIO getDirs
-    let settings = AppState (Settings True False Never Curl False GHCupURL) dirs defaultKeyBindings
+
+    pfreq <- (
+      runLogger . runE @'[NoCompatiblePlatform, NoCompatibleArch, DistroNotFound] . liftE $ platformRequest
+      ) >>= \case
+              VRight r -> pure r
+              VLeft e -> do
+                lift $ runLogger
+                  ($(logError) $ T.pack $ prettyShow e)
+                liftIO $ exitWith (ExitFailure 2)
+
+    let appstate = AppState (Settings True False Never Curl False GHCupURL) dirs defaultKeyBindings (GHCupInfo mempty mempty mempty) pfreq

    r <-
      runLogger
-      . flip runReaderT settings
+      . flip runReaderT appstate
      . runResourceT
      . runE @'[DigestError
               , DownloadFailed
@@ -239,19 +253,21 @@ validateTarballs (TarballFilter tool versionRegex) dls = do
 #endif
               ]
      $ do
-        case tool of
-          Just GHCup -> do
-            let fn = "ghcup"
-            dir <- liftIO ghcupCacheDir
-            p <- liftE $ download dli dir (Just fn)
-            liftE $ checkDigest dli p
+        case etool of
+          Right (Just GHCup) -> do
+            tmpUnpack <- lift mkGhcupTmpDir
+            _ <- liftE $ download (settings appstate) dli tmpUnpack Nothing
            pure Nothing
-          _ -> do
-            p <- liftE $ downloadCached dli Nothing
+          Right _ -> do
+            p <- liftE $ downloadCached (settings appstate) dirs dli Nothing
            fmap (Just . head . splitDirectories . head)
              . liftE
              . getArchiveFiles
              $ p
+          Left ShimGen -> do
+            tmpUnpack <- lift mkGhcupTmpDir
+            _ <- liftE $ download (settings appstate) dli tmpUnpack Nothing
+            pure Nothing
    case r of
      VRight (Just basePath) -> do
        case _dlSubdir dli of
--- a/app/ghcup/BrickMain.hs
+++ b/app/ghcup/BrickMain.hs
@@ -6,6 +6,7 @@
 {-# LANGUAGE TemplateHaskell   #-}
 {-# LANGUAGE TypeApplications  #-}
 {-# LANGUAGE ViewPatterns      #-}
+{-# LANGUAGE RankNTypes        #-}

 module BrickMain where

@@ -32,6 +33,7 @@ import           Codec.Archive
 import           Control.Exception.Safe
 import           Control.Monad.Logger
 import           Control.Monad.Reader
+import           Control.Monad.Trans.Except
 import           Control.Monad.Trans.Resource
 import           Data.Bool
 import           Data.Functor
@@ -58,11 +60,12 @@ import qualified Graphics.Vty                  as Vty
 import qualified Data.Vector                   as V


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

 data BrickData = BrickData
  { lr    :: [ListResult]
-  , dls   :: GHCupDownloads
-  , pfreq :: PlatformRequest
  }
  deriving Show

@@ -97,7 +100,7 @@ keyHandlers KeyBindings {..} =
  [ (bQuit, const "Quit"     , halt)
  , (bInstall, const "Install"  , withIOAction install')
  , (bUninstall, const "Uninstall", withIOAction del')
-  , (bSet, const "Set"      , withIOAction set')
+  , (bSet, const "Set"      , withIOAction ((liftIO .) . set'))
  , (bChangelog, const "ChangeLog", withIOAction changelog')
  , ( bShowAllVersions
    , \BrickSettings {..} ->
@@ -149,12 +152,7 @@ ui dimAttrs BrickState{ appSettings = as@BrickSettings{}, ..}
      <+> minHSize 15 (str "Version")
      <+> padLeft (Pad 1) (minHSize 25 $ str "Tags")
      <+> padLeft (Pad 5) (str "Notes")
-  renderList' = withDefAttr listAttr . drawListElements renderItem True . filterStack
-  filterStack appState'
-    | showAllTools as = appState'
-    | let v = clr appState'
-          nv = V.filter (\ListResult{..} -> lTool /= Stack) v
-    , otherwise = BrickInternalState { clr = nv, ix = ix appState' }
+  renderList' = withDefAttr listAttr . drawListElements renderItem True
  renderItem _ b listResult@ListResult{..} =
    let marks = if
          | lSet       -> (withAttr "set" $ str "✔✔")
@@ -329,21 +327,25 @@ moveCursor steps ais@BrickInternalState{..} direction =

 -- | 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) -> IO (Either String a))
+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) -> suspendAndResume $ do
-    action as (ix, e) >>= \case
-      Left  err -> putStrLn ("Error: " <> err)
-      Right _   -> putStrLn "Success"
-    getAppData Nothing (pfreq . appData $ as) >>= \case
-      Right data' -> do
-        putStrLn "Press enter to continue"
-        _ <- getLine
-        pure (updateList data' as)
-      Left err -> throwIO $ userError err
+  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.
@@ -364,7 +366,9 @@ constructList :: BrickData
              -> Maybe BrickInternalState
              -> BrickInternalState
 constructList appD appSettings =
-  replaceLR (filterVisible (showAllVersions appSettings)) (lr appD)
+  replaceLR (filterVisible (showAllVersions appSettings)
+                           (showAllTools appSettings))
+            (lr appD)

 listSelectedElement' :: BrickInternalState -> Maybe (Int, ListResult)
 listSelectedElement' BrickInternalState{..} = fmap (ix, ) $ clr !? ix
@@ -397,21 +401,32 @@ replaceLR filterF lr s =
    lTool e1 == lTool e2 && lVer e1 == lVer e2 && lCross e1 == lCross e2


-filterVisible :: Bool -> ListResult -> Bool
-filterVisible showAllVersions e | lInstalled e = True
-                                | showAllVersions = True
-                                | otherwise    = not (elem Old (lTag e))
+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' :: BrickState -> (Int, ListResult) -> IO (Either String ())
-install' BrickState { appData = BrickData {..} } (_, ListResult {..}) = do
-  settings <- readIORef settings'
-  l        <- readIORef logger'
+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
+
+  l        <- liftIO $ readIORef logger'
  let runLogger = myLoggerT l

  let run =
        runLogger
-          . flip runReaderT settings
          . runResourceT
          . runE
            @'[ AlreadyInstalled
@@ -435,24 +450,24 @@ install' BrickState { appData = BrickData {..} } (_, ListResult {..}) = do
      case lTool of
        GHC   -> do
          let vi = getVersionInfo lVer GHC dls
-          liftE $ installGHCBin dls lVer pfreq $> vi
+          liftE $ installGHCBin lVer $> vi
        Cabal -> do
          let vi = getVersionInfo lVer Cabal dls
-          liftE $ installCabalBin dls lVer pfreq $> vi
+          liftE $ installCabalBin lVer $> vi
        GHCup -> do
          let vi = snd <$> getLatest dls GHCup
-          liftE $ upgradeGHCup dls Nothing False pfreq $> vi
+          liftE $ upgradeGHCup Nothing False $> vi
        HLS   -> do
          let vi = getVersionInfo lVer HLS dls
-          liftE $ installHLSBin dls lVer pfreq $> vi
+          liftE $ installHLSBin lVer $> vi
        Stack -> do
          let vi = getVersionInfo lVer Stack dls
-          liftE $ installStackBin dls lVer pfreq $> vi
+          liftE $ installStackBin lVer $> vi
    )
    >>= \case
          VRight vi                         -> do
            forM_ (_viPostInstall =<< vi) $ \msg ->
-              runLogger $ $(logInfo) msg
+              myLoggerT l $ $(logInfo) msg
            pure $ Right ()
          VLeft  (V (AlreadyInstalled _ _)) -> pure $ Right ()
          VLeft (V NoUpdate) -> pure $ Right ()
@@ -484,13 +499,16 @@ set' _ (_, ListResult {..}) = do
          VLeft  e -> pure $ Left (prettyShow e)


-del' :: BrickState -> (Int, ListResult) -> IO (Either String ())
-del' BrickState { appData = BrickData {..} } (_, ListResult {..}) = do
-  settings <- readIORef settings'
-  l        <- readIORef logger'
-  let runLogger = myLoggerT l
+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 = runLogger . flip runReaderT settings . runE @'[NotInstalled]
+  l <- liftIO $ readIORef logger'
+  let runLogger = myLoggerT l
+  let run = myLoggerT l . runE @'[NotInstalled]

  run (do
      let vi = getVersionInfo lVer lTool dls
@@ -509,8 +527,12 @@ del' BrickState { appData = BrickData {..} } (_, ListResult {..}) = do
          VLeft  e -> pure $ Left (prettyShow e)


-changelog' :: BrickState -> (Int, ListResult) -> IO (Either String ())
-changelog' BrickState { appData = BrickData {..} } (_, ListResult {..}) = do
+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
      [i|Could not find ChangeLog for #{lTool}, version #{prettyVer lVer}|]
@@ -539,6 +561,8 @@ settings' = unsafePerformIO $ do
                                })
                      dirs
                      defaultKeyBindings
+                      (GHCupInfo mempty mempty mempty)
+                      (PlatformRequest A_64 Darwin Nothing)



@@ -554,10 +578,9 @@ logger' = unsafePerformIO

 brickMain :: AppState
          -> LoggerConfig
-          -> GHCupDownloads
-          -> PlatformRequest
+          -> GHCupInfo
          -> IO ()
-brickMain s l av pfreq' = do
+brickMain s l gi = do
  writeIORef settings' s
  -- logger interpreter
  writeIORef logger'   l
@@ -565,7 +588,7 @@ brickMain s l av pfreq' = do

  no_color <- isJust <$> lookupEnv "NO_COLOR"

-  eAppData <- getAppData (Just av) pfreq'
+  eAppData <- getAppData (Just gi)
  case eAppData of
    Right ad ->
      defaultMain
@@ -586,8 +609,8 @@ defaultAppSettings :: BrickSettings
 defaultAppSettings = BrickSettings { showAllVersions = False, showAllTools = False }


-getDownloads' :: IO (Either String GHCupDownloads)
-getDownloads' = do
+getGHCupInfo :: IO (Either String GHCupInfo)
+getGHCupInfo = do
  settings <- readIORef settings'
  l        <- readIORef logger'
  let runLogger = myLoggerT l
@@ -596,29 +619,25 @@ getDownloads' = do
    runLogger
    . flip runReaderT settings
    . runE @'[JSONError , DownloadFailed , FileDoesNotExistError]
-    $ fmap _ghcupDownloads
    $ liftE
-    $ getDownloadsF (urlSource . GT.settings $ settings)
+    $ getDownloadsF (GT.settings settings) (GT.dirs settings)

  case r of
    VRight a -> pure $ Right a
    VLeft  e -> pure $ Left (prettyShow e)


-getAppData :: Maybe GHCupDownloads
-           -> PlatformRequest
+getAppData :: Maybe GHCupInfo
           -> IO (Either String BrickData)
-getAppData mg pfreq' = do
-  settings <- readIORef settings'
-  l        <- readIORef logger'
+getAppData mgi = runExceptT $ do
+  l        <- liftIO $ readIORef logger'
  let runLogger = myLoggerT l

-  r <- maybe getDownloads' (pure . Right) mg
+  r <- ExceptT $ maybe getGHCupInfo (pure . Right) mgi
+  liftIO $ modifyIORef settings' (\s -> s { ghcupInfo = r })
+  settings <- liftIO $ readIORef settings'

  runLogger . flip runReaderT settings $ do
-    case r of
-      Right dls -> do
-        lV <- listVersions dls Nothing Nothing pfreq'
-        pure $ Right $ BrickData (reverse lV) dls pfreq'
-      Left e -> pure $ Left [i|#{e}|]
+    lV <- listVersions Nothing Nothing
+    pure $ BrickData (reverse lV)

--- a/app/ghcup/Main.hs
+++ b/app/ghcup/Main.hs
@@ -79,8 +79,6 @@ import qualified Text.Megaparsec.Char          as MPC



-
-
 data Options = Options
  {
  -- global options
@@ -102,9 +100,11 @@ data Command
  | Rm (Either RmCommand RmOptions)
  | DInfo
  | Compile CompileCommand
+  | Whereis WhereisOptions WhereisCommand
  | Upgrade UpgradeOpts Bool
  | ToolRequirements
  | ChangeLog ChangeLogOptions
+  | Nuke
 #if defined(BRICK)
  | Interactive
 #endif
@@ -176,6 +176,7 @@ data GHCCompileOptions = GHCCompileOptions
  , crossTarget  :: Maybe Text
  , addConfArgs  :: [Text]
  , setCompile   :: Bool
+  , ovewrwiteVer :: Maybe Version
  }

 data UpgradeOpts = UpgradeInplace
@@ -190,6 +191,13 @@ data ChangeLogOptions = ChangeLogOptions
  }


+data WhereisCommand = WhereisTool Tool (Maybe ToolVersion)
+
+data WhereisOptions = WhereisOptions {
+   directory :: Bool
+}
+
+
 -- https://github.com/pcapriotti/optparse-applicative/issues/148

 -- | A switch that can be enabled using --foo and disabled using --no-foo.
@@ -220,7 +228,7 @@ invertableSwitch'
    -> 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' True ( enmod <> long longopt <> if defv then mempty else short shortopt)
    <|> flag' False (dismod <> long nolongopt <> if defv then short shortopt else mempty)
    )
  where
@@ -293,7 +301,7 @@ com =
          (   Install
          <$> info
                (installParser <**> helper)
-                (  progDesc "Install or update GHC/cabal"
+                (  progDesc "Install or update GHC/cabal/HLS"
                <> footerDoc (Just $ text installToolFooter)
                )
          )
@@ -309,7 +317,7 @@ com =
           "rm"
           (info
             (Rm <$> rmParser <**> helper)
-             (  progDesc "Remove a GHC/cabal version"
+             (  progDesc "Remove a GHC/cabal/HLS version"
             <> footerDoc (Just $ text rmFooter)
             )
           )
@@ -335,6 +343,17 @@ com =
           <$> info (compileP <**> helper)
                    (progDesc "Compile a tool from source")
           )
+      <> command
+           "whereis"
+            (info
+             (   (Whereis
+                     <$> (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 ))
+           )
      <> commandGroup "Main commands:"
      )
    <|> subparser
@@ -369,6 +388,14 @@ com =
              )
          <> internal
          )
+     <|> subparser
+          (command
+              "nuke"
+               (info (pure Nuke <**> helper)
+                     (progDesc "Completely remove ghcup from your system"))
+           <> commandGroup "Nuclear Commands:"
+          )
+
 where
  installToolFooter :: String
  installToolFooter = [s|Discussion:
@@ -394,6 +421,22 @@ com =
  By default returns the URI of the ChangeLog of the latest GHC release.
  Pass '-o' to automatically open via xdg-open.|]

+  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|]
+

 installCabalFooter :: String
 installCabalFooter = [s|Discussion:
@@ -699,6 +742,86 @@ Examples:
  ghcup compile ghc -j 4 -v 8.4.2 -b 8.2.2 -x armv7-unknown-linux-gnueabihf --config $(pwd)/build.mk -- --enable-unregisterised|]


+whereisP :: Parser WhereisCommand
+whereisP = subparser
+  (  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" ))
+  )
+ 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|]
+
+
 ghcCompileOpts :: Parser GHCCompileOptions
 ghcCompileOpts =
  GHCCompileOptions
@@ -764,6 +887,15 @@ ghcCompileOpts =
          (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'"
+            )
+          )


 toolVersionParser :: Parser ToolVersion
@@ -807,53 +939,47 @@ versionArgument criteria tool = argument (eitherReader tVersionEither) (metavar

 tagCompleter :: Tool -> [String] -> Completer
 tagCompleter tool add = listIOCompleter $ do
+  dirs' <- liftIO getDirs
  let loggerConfig = LoggerConfig
        { lcPrintDebug = False
        , colorOutter  = mempty
        , rawOutter    = mempty
        }
-
-      runLogger = myLoggerT loggerConfig
-
-  dirs <- getDirs
-  let simpleSettings = Settings False False Never Curl False GHCupURL
-      simpleAppState = AppState simpleSettings dirs defaultKeyBindings
-      runEnv = runLogger . flip runReaderT simpleAppState
-
-  mGhcUpInfo <- runEnv . runE $ readFromCache
-
+  let runLogger = myLoggerT loggerConfig
+  mGhcUpInfo <- runLogger . runE $ readFromCache dirs'
  case mGhcUpInfo of
-    VRight dls -> do
+    VRight ghcupInfo -> do
      let allTags = filter (\t -> t /= Old)
            $ join
            $ M.elems
-            $ availableToolVersions (_ghcupDownloads dls) tool
+            $ 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 getDirs
  let loggerConfig = LoggerConfig
        { lcPrintDebug = False
        , colorOutter  = mempty
        , rawOutter    = mempty
        }
-
-      runLogger = myLoggerT loggerConfig
-
+  let runLogger = myLoggerT loggerConfig
+  mGhcUpInfo <- runLogger . runE $ readFromCache dirs'
  mpFreq <- runLogger . runE $ platformRequest
+  forFold mpFreq $ \pfreq ->
+    forFold mGhcUpInfo $ \ghcupInfo -> do
+      let appState = AppState
+            (Settings True False Never Curl False GHCupURL)
+            dirs'
+            defaultKeyBindings
+            ghcupInfo
+            pfreq

-  forFold mpFreq $ \pfreq -> do
-    dirs <- getDirs
-    let simpleSettings = Settings False False Never Curl False GHCupURL
-        simpleAppState = AppState simpleSettings dirs defaultKeyBindings
-        runEnv = runLogger . flip runReaderT simpleAppState
+          runEnv = runLogger . flip runReaderT appState

-    mGhcUpInfo <- runEnv . runE $ readFromCache
-
-    forFold mGhcUpInfo $ \(GHCupInfo _ dls) -> do
-      installedVersions <- runEnv $ listVersions dls (Just tool) criteria pfreq
+      installedVersions <- runEnv $ listVersions (Just tool) criteria
      return $ T.unpack . prettyVer . lVer <$> installedVersions


@@ -974,9 +1100,8 @@ bindistParser :: String -> Either String URI
 bindistParser = first show . parseURI strictURIParserOptions . UTF8.fromString


-toSettings :: Options -> IO AppState
+toSettings :: Options -> IO (Settings, KeyBindings)
 toSettings options = do
-  dirs <- getDirs
  userConf <- runE @'[ JSONError ] ghcupConfigFile >>= \case
    VRight r -> pure r
    VLeft (V (JSONDecodeError e)) -> do
@@ -984,10 +1109,10 @@ toSettings options = do
      pure defaultUserSettings
    _ -> do
      die "Unexpected error!"
-  pure $ mergeConf options dirs userConf
+  pure $ mergeConf options userConf
 where
-   mergeConf :: Options -> Dirs -> UserSettings -> AppState
-   mergeConf Options{..} dirs UserSettings{..} =
+   mergeConf :: Options -> UserSettings -> (Settings, KeyBindings)
+   mergeConf Options{..} UserSettings{..} =
     let cache       = fromMaybe (fromMaybe False uCache) optCache
         noVerify    = fromMaybe (fromMaybe False uNoVerify) optNoVerify
         verbose     = fromMaybe (fromMaybe False uVerbose) optVerbose
@@ -995,7 +1120,7 @@ toSettings options = do
         downloader  = fromMaybe (fromMaybe defaultDownloader uDownloader) optsDownloader
         keyBindings = maybe defaultKeyBindings mergeKeys uKeyBindings
         urlSource   = maybe (fromMaybe GHCupURL uUrlSource) OwnSource optUrlSource
-     in AppState (Settings {..}) dirs keyBindings
+     in (Settings {..}, keyBindings)
 #if defined(INTERNAL_DOWNLOADER)
   defaultDownloader = Internal
 #else
@@ -1038,7 +1163,10 @@ upgradeOptsP =
 describe_result :: String
 describe_result = $( LitE . StringL <$>
                     runIO (do
-                             CapturedProcess{..} <- executeOut "git" ["describe"] Nothing
+                             CapturedProcess{..} <-  do
+                              dirs <- liftIO getDirs
+                              let settings = AppState (Settings True False Never Curl False GHCupURL) dirs defaultKeyBindings
+                              flip runReaderT settings $ executeOut "git" ["describe"] Nothing
                             case _exitCode of
                               ExitSuccess   -> pure . T.unpack . decUTF8Safe' $ _stdOut
                               ExitFailure _ -> pure numericVer
@@ -1048,6 +1176,11 @@ describe_result = $( LitE . StringL <$>

 main :: IO ()
 main = do
+  -- https://gitlab.haskell.org/ghc/ghc/issues/8118
+  setLocaleEncoding utf8
+
+  void enableAnsiSupport
+
  let versionHelp = infoOption
        ( ("The GHCup Haskell installer, version " <>)
          (head . lines $ describe_result)
@@ -1084,28 +1217,82 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
            (footerDoc (Just $ text main_footer))
      )
    >>= \opt@Options {..} -> do
-          appstate@AppState{dirs = Dirs{..}, ..} <- toSettings opt
+          dirs <- getDirs

          -- create ~/.ghcup dir
-          createDirRecursive' baseDir
+          ensureDirectories dirs
+
+          (settings, keybindings) <- toSettings opt

          -- logger interpreter
-          logfile <- flip runReaderT appstate $ initGHCupFileLogging
+          logfile <- initGHCupFileLogging (logsDir dirs)
          let loggerConfig = LoggerConfig
                { lcPrintDebug = verbose settings
                , colorOutter  = B.hPut stderr
-                , rawOutter    = B.appendFile logfile
+                , rawOutter    =
+                    case optCommand of
+                      Nuke -> \_ -> pure ()
+                      _ -> B.appendFile logfile
                }
          let runLogger = myLoggerT loggerConfig
+          let siletRunLogger = myLoggerT loggerConfig { colorOutter = \_ -> pure () }
+
+          pfreq <- (
+            runLogger . runE @'[NoCompatiblePlatform, NoCompatibleArch, DistroNotFound] . liftE $ platformRequest
+            ) >>= \case
+                    VRight r -> pure r
+                    VLeft e -> do
+                      runLogger
+                        ($(logError) $ T.pack $ prettyShow e)
+                      exitWith (ExitFailure 2)
+
+
+
+          ----------------------------------------
+          -- Getting download and platform info --
+          ----------------------------------------
+
+          ghcupInfo <-
+            ( runLogger
+              . runE @'[JSONError , DownloadFailed, FileDoesNotExistError]
+              $ liftE
+              $ getDownloadsF settings dirs
+              )
+              >>= \case
+                    VRight r -> pure r
+                    VLeft  e -> do
+                      runLogger
+                        ($(logError) $ T.pack $ prettyShow e)
+                      exitWith (ExitFailure 2)
+
+          let appstate@AppState{dirs = Dirs{..}
+                               , ghcupInfo = GHCupInfo { _ghcupDownloads = dls, .. }
+                               } = AppState settings dirs keybindings ghcupInfo pfreq
+
+          case optCommand of
+            Upgrade _ _ -> pure ()
+            _ -> do
+              lookupEnv "GHCUP_SKIP_UPDATE_CHECK" >>= \case
+                Nothing -> runLogger $ flip runReaderT appstate $ checkForUpdates
+                Just _ -> pure ()
+
+
+          -- ensure global tools
+          (siletRunLogger $ flip runReaderT appstate $ runE ensureGlobalTools) >>= \case
+            VRight _ -> pure ()
+            VLeft e -> do
+              runLogger
+                ($(logError) $ T.pack $ prettyShow e)
+              exitWith (ExitFailure 30)


          -------------------------
          -- Effect interpreters --
          -------------------------

-          let runInstTool' appstate' =
+          let runInstTool' appstate' mInstPlatform =
                runLogger
-                  . flip runReaderT appstate'
+                  . flip runReaderT (maybe appstate' (\x -> appstate'{ pfreq = x }) mInstPlatform)
                  . runResourceT
                  . runE
                    @'[ AlreadyInstalled
@@ -1194,6 +1381,17 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
 #endif
                      ]

+          let
+            runWhereIs =
+              runLogger
+                . flip runReaderT appstate
+                . runE
+                  @'[ NotInstalled
+                    , NoToolVersionSet
+                    , NextVerNotFound
+                    , TagNotFound
+                    ]
+
          let runUpgrade =
                runLogger
                  . flip runReaderT appstate
@@ -1208,57 +1406,22 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                      ]


-          ----------------------------------------
-          -- Getting download and platform info --
-          ----------------------------------------
-
-          pfreq <- (
-            runLogger . runE @'[NoCompatiblePlatform, NoCompatibleArch, DistroNotFound] . liftE $ platformRequest
-            ) >>= \case
-                    VRight r -> pure r
-                    VLeft e -> do
-                      runLogger
-                        ($(logError) $ T.pack $ prettyShow e)
-                      exitWith (ExitFailure 2)
-
-
-          (GHCupInfo treq dls) <-
-            ( runLogger
-              . flip runReaderT appstate
-              . runE @'[JSONError , DownloadFailed, FileDoesNotExistError]
-              $ liftE
-              $ getDownloadsF (urlSource settings)
-              )
-              >>= \case
-                    VRight r -> pure r
-                    VLeft  e -> do
-                      runLogger
-                        ($(logError) $ T.pack $ prettyShow e)
-                      exitWith (ExitFailure 2)
-
-          case optCommand of
-            Upgrade _ _ -> pure ()
-            _ -> runLogger $ flip runReaderT appstate $ checkForUpdates dls pfreq
-
-
-
          -----------------------
          -- Command functions --
          -----------------------

          let installGHC InstallOptions{..} =
                  (case instBindist of
-                     Nothing -> runInstTool $ do
-                       (v, vi) <- liftE $ fromVersion dls instVer GHC
-                       liftE $ installGHCBin dls (_tvVersion v) (fromMaybe pfreq instPlatform)
+                     Nothing -> runInstTool instPlatform $ do
+                       (v, vi) <- liftE $ fromVersion instVer GHC
+                       liftE $ installGHCBin (_tvVersion v)
                       when instSet $ void $ liftE $ setGHC v SetGHCOnly
                       pure vi
-                     Just uri -> runInstTool' appstate{ settings = settings {noVerify = True}} $ do
-                       (v, vi) <- liftE $ fromVersion dls instVer GHC
+                     Just uri -> runInstTool' appstate{ settings = settings {noVerify = True}} instPlatform $ do
+                       (v, vi) <- liftE $ fromVersion instVer GHC
                       liftE $ installGHCBindist
                         (DownloadInfo uri (Just $ RegexDir "ghc-.*") "")
                         (_tvVersion v)
-                         (fromMaybe pfreq instPlatform)
                       when instSet $ void $ liftE $ setGHC v SetGHCOnly
                       pure vi
                    )
@@ -1274,8 +1437,8 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                            pure ExitSuccess
                          VLeft err@(V (BuildFailed tmpdir _)) -> do
                            case keepDirs settings of
-                              Never -> runLogger ($(logError) $ T.pack $ prettyShow err)
-                              _ -> runLogger ($(logError) [i|#{prettyShow err}
+                              Never -> myLoggerT loggerConfig $ ($(logError) $ T.pack $ prettyShow err)
+                              _ -> myLoggerT loggerConfig $ ($(logError) [i|#{prettyShow err}
    Check the logs at #{logsDir} and the build directory #{tmpdir} for more clues.
    Make sure to clean up #{tmpdir} afterwards.|])
                            pure $ ExitFailure 3
@@ -1288,16 +1451,15 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]

          let installCabal InstallOptions{..} =
                (case instBindist of
-                   Nothing -> runInstTool $ do
-                     (v, vi) <- liftE $ fromVersion dls instVer Cabal
-                     liftE $ installCabalBin dls (_tvVersion v) (fromMaybe pfreq instPlatform)
+                   Nothing -> runInstTool instPlatform $ do
+                     (v, vi) <- liftE $ fromVersion instVer Cabal
+                     liftE $ installCabalBin (_tvVersion v)
                     pure vi
-                   Just uri -> runInstTool' appstate{ settings = settings { noVerify = True}} $ do
-                     (v, vi) <- liftE $ fromVersion dls instVer Cabal
+                   Just uri -> runInstTool' appstate{ settings = settings { noVerify = True}} instPlatform $ do
+                     (v, vi) <- liftE $ fromVersion instVer Cabal
                     liftE $ installCabalBindist
                         (DownloadInfo uri Nothing "")
                         (_tvVersion v)
-                         (fromMaybe pfreq instPlatform)
                     pure vi
                  )
                  >>= \case
@@ -1318,16 +1480,15 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]

          let installHLS InstallOptions{..} =
                (case instBindist of
-                   Nothing -> runInstTool $ do
-                     (v, vi) <- liftE $ fromVersion dls instVer HLS
-                     liftE $ installHLSBin dls (_tvVersion v) (fromMaybe pfreq instPlatform)
+                   Nothing -> runInstTool instPlatform $ do
+                     (v, vi) <- liftE $ fromVersion instVer HLS
+                     liftE $ installHLSBin (_tvVersion v)
                     pure vi
-                   Just uri -> runInstTool' appstate{ settings = settings { noVerify = True}} $ do
-                     (v, vi) <- liftE $ fromVersion dls instVer HLS
+                   Just uri -> runInstTool' appstate{ settings = settings { noVerify = True}} instPlatform $ do
+                     (v, vi) <- liftE $ fromVersion instVer HLS
                     liftE $ installHLSBindist
                         (DownloadInfo uri Nothing "")
                         (_tvVersion v)
-                         (fromMaybe pfreq instPlatform)
                     pure vi
                  )
                  >>= \case
@@ -1348,16 +1509,15 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]

          let installStack InstallOptions{..} =
                (case instBindist of
-                   Nothing -> runInstTool $ do
-                     (v, vi) <- liftE $ fromVersion dls instVer Stack
-                     liftE $ installStackBin dls (_tvVersion v) (fromMaybe pfreq instPlatform)
+                   Nothing -> runInstTool instPlatform $ do
+                     (v, vi) <- liftE $ fromVersion instVer Stack
+                     liftE $ installStackBin (_tvVersion v)
                     pure vi
-                   Just uri -> runInstTool' appstate{ settings = settings { noVerify = True}} $ do
-                     (v, vi) <- liftE $ fromVersion dls instVer Stack
+                   Just uri -> runInstTool' appstate{ settings = settings { noVerify = True}} instPlatform $ do
+                     (v, vi) <- liftE $ fromVersion instVer Stack
                     liftE $ installStackBindist
                         (DownloadInfo uri Nothing "")
                         (_tvVersion v)
-                         (fromMaybe pfreq instPlatform)
                     pure vi
                  )
                  >>= \case
@@ -1379,7 +1539,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]

          let setGHC' SetOptions{..} =
                runSetGHC (do
-                    v <- liftE $ fst <$> fromVersion' dls sToolVer GHC
+                    v <- liftE $ fst <$> fromVersion' sToolVer GHC
                    liftE $ setGHC v SetGHCOnly
                  )
                  >>= \case
@@ -1394,7 +1554,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]

          let setCabal' SetOptions{..} =
                runSetCabal (do
-                    v <- liftE $ fst <$> fromVersion' dls sToolVer Cabal
+                    v <- liftE $ fst <$> fromVersion' sToolVer Cabal
                    liftE $ setCabal (_tvVersion v)
                    pure v
                  )
@@ -1410,7 +1570,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]

          let setHLS' SetOptions{..} =
                runSetHLS (do
-                    v <- liftE $ fst <$> fromVersion' dls sToolVer HLS
+                    v <- liftE $ fst <$> fromVersion' sToolVer HLS
                    liftE $ setHLS (_tvVersion v)
                    pure v
                  )
@@ -1426,7 +1586,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]

          let setStack' SetOptions{..} =
                runSetCabal (do
-                    v <- liftE $ fst <$> fromVersion' dls sToolVer Stack
+                    v <- liftE $ fst <$> fromVersion' sToolVer Stack
                    liftE $ setStack (_tvVersion v)
                    pure v
                  )
@@ -1502,7 +1662,8 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]

          res <- case optCommand of
 #if defined(BRICK)
-            Interactive -> liftIO $ brickMain appstate loggerConfig dls pfreq >> pure ExitSuccess
+            Interactive -> do
+              liftIO $ brickMain appstate loggerConfig ghcupInfo >> pure ExitSuccess
 #endif
            Install (Right iopts) -> do
              runLogger ($(logWarn) [i|This is an old-style command for installing GHC. Use 'ghcup install ghc' instead.|])
@@ -1525,7 +1686,7 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]

            List ListOptions {..} ->
              runListGHC (do
-                  l <- listVersions dls loTool lCriteria pfreq
+                  l <- listVersions loTool lCriteria
                  liftIO $ printListResult lRawFormat l
                  pure ExitSuccess
                )
@@ -1559,14 +1720,14 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                        "...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 dls
+                targetVer <- liftE $ compileGHC
                            (first (GHCTargetVersion crossTarget) targetGhc)
+                            ovewrwiteVer
                            bootstrapGhc
                            jobs
                            buildConfig
                            patchDir
                            addConfArgs
-                            pfreq
                let vi = getVersionInfo (_tvVersion targetVer) GHC dls
                when setCompile $ void $ liftE $
                  setGHC targetVer SetGHCOnly
@@ -1585,8 +1746,8 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
                        pure ExitSuccess
                      VLeft err@(V (BuildFailed tmpdir _)) -> do
                        case keepDirs settings of
-                          Never -> runLogger $ $(logError) $ T.pack $ prettyShow err
-                          _ -> runLogger ($(logError) [i|#{prettyShow err}
+                          Never -> myLoggerT loggerConfig $ $(logError) $ T.pack $ prettyShow err
+                          _ -> myLoggerT loggerConfig $ ($(logError) [i|#{prettyShow err}
 Check the logs at #{logsDir} and the build directory #{tmpdir} for more clues.
 Make sure to clean up #{tmpdir} afterwards.|])
                        pure $ ExitFailure 9
@@ -1594,13 +1755,29 @@ Make sure to clean up #{tmpdir} afterwards.|])
                        runLogger $ $(logError) $ T.pack $ prettyShow e
                        pure $ ExitFailure 9

+            Whereis WhereisOptions{..} (WhereisTool tool whereVer) ->
+              runWhereIs (do
+                (v, _) <- liftE $ fromVersion whereVer tool
+                loc <- liftE $ whereIsTool tool v
+                if directory
+                then pure $ takeDirectory loc
+                else pure loc
+                )
+                >>= \case
+                      VRight r -> do
+                        putStr r
+                        pure ExitSuccess
+                      VLeft e -> do
+                        runLogger $ $(logError) $ T.pack $ prettyShow e
+                        pure $ ExitFailure 30
+
            Upgrade uOpts force -> do
              target <- case uOpts of
                UpgradeInplace  -> Just <$> liftIO getExecutablePath
                (UpgradeAt p)   -> pure $ Just p
-                UpgradeGHCupDir -> pure (Just (binDir </> "ghcup"))
+                UpgradeGHCupDir -> pure (Just (binDir </> "ghcup" <> exeExt))

-              runUpgrade (liftE $ upgradeGHCup dls target force pfreq) >>= \case
+              runUpgrade (liftE $ upgradeGHCup target force) >>= \case
                VRight v' -> do
                  let pretty_v = prettyVer v'
                  let vi = fromJust $ snd <$> getLatest dls GHCup
@@ -1617,12 +1794,13 @@ Make sure to clean up #{tmpdir} afterwards.|])
                  pure $ ExitFailure 11

            ToolRequirements ->
-              runLogger
+              flip runReaderT appstate
+              $ runLogger
                (runE
                  @'[NoCompatiblePlatform , DistroNotFound , NoToolRequirements]
                $ do
                    platform <- liftE getPlatform
-                    req      <- getCommonRequirements platform treq ?? NoToolRequirements
+                    req      <- getCommonRequirements platform _toolRequirements ?? NoToolRequirements
                    liftIO $ T.hPutStr stdout (prettyRequirements req)
                )
                >>= \case
@@ -1658,6 +1836,7 @@ Make sure to clean up #{tmpdir} afterwards.|])

                  if clOpen
                    then
+                      flip runReaderT appstate $
                      exec cmd
                           [T.unpack $ decUTF8Safe $ serializeURIRef' uri]
                           Nothing
@@ -1668,42 +1847,78 @@ Make sure to clean up #{tmpdir} afterwards.|])
                                >> pure (ExitFailure 13)
                    else putStrLn uri' >> pure ExitSuccess

+            Nuke ->
+              runRm (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 $ $logWarn "These Files have survived Nuclear Annihilation, you may remove them manually."
+                                  forM_ leftOverFiles putStrLn
+                                  pure ExitSuccess
+
+                            VLeft e -> do
+                              runLogger $ $(logError) $ T.pack $ prettyShow e
+                              pure $ ExitFailure 15
+
+
          case res of
            ExitSuccess        -> pure ()
            ef@(ExitFailure _) -> exitWith ef
+
+
  pure ()

 fromVersion :: (MonadLogger m, MonadFail m, MonadReader AppState m, MonadThrow m, MonadIO m, MonadCatch m)
-            => GHCupDownloads
-            -> Maybe ToolVersion
+            => Maybe ToolVersion
            -> Tool
            -> Excepts '[TagNotFound, NextVerNotFound, NoToolVersionSet] m (GHCTargetVersion, Maybe VersionInfo)
-fromVersion av tv = fromVersion' av (toSetToolVer tv)
+fromVersion tv = fromVersion' (toSetToolVer tv)

 fromVersion' :: (MonadLogger m, MonadFail m, MonadReader AppState m, MonadThrow m, MonadIO m, MonadCatch m)
-             => GHCupDownloads
-             -> SetToolVersion
+             => SetToolVersion
             -> Tool
             -> Excepts '[TagNotFound, NextVerNotFound, NoToolVersionSet] m (GHCTargetVersion, Maybe VersionInfo)
-fromVersion' av SetRecommended tool =
-  (\(x, y) -> (mkTVer x, Just y)) <$> getRecommended av tool
+fromVersion' SetRecommended tool = do
+  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- lift ask
+  (\(x, y) -> (mkTVer x, Just y)) <$> getRecommended dls tool
    ?? TagNotFound Recommended tool
-fromVersion' av (SetToolVersion v) tool = do
-  let vi = getVersionInfo (_tvVersion v) tool av
+fromVersion' (SetToolVersion v) tool = do
+  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- lift ask
+  let vi = getVersionInfo (_tvVersion v) tool dls
  case pvp $ prettyVer (_tvVersion v) of
    Left _ -> pure (v, vi)
    Right (PVP (major' :|[minor'])) ->
-      case getLatestGHCFor (fromIntegral major') (fromIntegral minor') av of
+      case getLatestGHCFor (fromIntegral major') (fromIntegral minor') dls of
        Just (v', vi') -> pure (GHCTargetVersion (_tvTarget v) v', Just vi')
        Nothing -> pure (v, vi)
    Right _ -> pure (v, vi)
-fromVersion' av  (SetToolTag Latest) tool =
-  (\(x, y) -> (mkTVer x, Just y)) <$> getLatest av tool ?? TagNotFound Latest tool
-fromVersion' av (SetToolTag Recommended) tool =
-  (\(x, y) -> (mkTVer x, Just y)) <$> getRecommended av tool ?? TagNotFound Recommended tool
-fromVersion' av (SetToolTag (Base pvp'')) GHC =
-  (\(x, y) -> (mkTVer x, Just y)) <$> getLatestBaseVersion av pvp'' ?? TagNotFound (Base pvp'') GHC
-fromVersion' av SetNext tool = do
+fromVersion' (SetToolTag Latest) tool = do
+  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- lift ask
+  (\(x, y) -> (mkTVer x, Just y)) <$> getLatest dls tool ?? TagNotFound Latest tool
+fromVersion' (SetToolTag Recommended) tool = do
+  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- lift ask
+  (\(x, y) -> (mkTVer x, Just y)) <$> getRecommended dls tool ?? TagNotFound Recommended tool
+fromVersion' (SetToolTag (Base pvp'')) GHC = do
+  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- lift ask
+  (\(x, y) -> (mkTVer x, Just y)) <$> getLatestBaseVersion dls pvp'' ?? TagNotFound (Base pvp'') GHC
+fromVersion' SetNext tool = do
+  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- lift ask
  next <- case tool of
    GHC -> do
      set <- fmap _tvVersion $ ghcSet Nothing !? NoToolVersionSet tool
@@ -1746,17 +1961,14 @@ fromVersion' av SetNext tool = do
        . sort
        $ stacks) ?? NoToolVersionSet tool
    GHCup -> fail "GHCup cannot be set"
-  let vi = getVersionInfo (_tvVersion next) tool av
+  let vi = getVersionInfo (_tvVersion next) tool dls
  pure (next, vi)
-fromVersion' _ (SetToolTag t') tool =
+fromVersion' (SetToolTag t') tool =
  throwE $ TagNotFound t' tool


 printListResult :: Bool -> [ListResult] -> IO ()
 printListResult raw lr = do
-  -- https://gitlab.haskell.org/ghc/ghc/issues/8118
-  setLocaleEncoding utf8
-
  no_color <- isJust <$> lookupEnv "NO_COLOR"

  let
@@ -1780,9 +1992,15 @@ printListResult raw lr = do
        . 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
@@ -1909,11 +2127,10 @@ checkForUpdates :: ( MonadReader AppState m
                   , MonadFail m
                   , MonadLogger m
                   )
-                => GHCupDownloads
-                -> PlatformRequest
-                -> m ()
-checkForUpdates dls pfreq = do
-  lInstalled <- listVersions dls Nothing (Just ListInstalled) pfreq
+                => m ()
+checkForUpdates = do
+  AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask
+  lInstalled <- listVersions Nothing (Just ListInstalled)
  let latestInstalled tool = (fmap lVer . lastMay . filter (\lr -> lTool lr == tool)) lInstalled

  forM_ (getLatest dls GHCup) $ \(l, _) -> do
--- a/713
+++ b/713
@@ -5,8 +5,12 @@
 #   * BOOTSTRAP_HASKELL_NO_UPGRADE - any nonzero value to not trigger the upgrade
 #   * GHCUP_USE_XDG_DIRS - any nonzero value to respect The XDG Base Directory Specification
 #   * BOOTSTRAP_HASKELL_VERBOSE - any nonzero value for more verbose installation
-#   * BOOTSTRAP_HASKELL_GHC_VERSION
-#   * BOOTSTRAP_HASKELL_CABAL_VERSION
+#   * BOOTSTRAP_HASKELL_GHC_VERSION - the ghc version to install
+#   * BOOTSTRAP_HASKELL_CABAL_VERSION - the cabal version to install
+#   * BOOTSTRAP_HASKELL_INSTALL_STACK - whether to install latest stack
+#   * BOOTSTRAP_HASKELL_INSTALL_HLS - whether to install latest hls
+#   * BOOTSTRAP_HASKELL_ADJUST_BASHRC - whether to adjust PATH in bashrc (prepend)
+#   * BOOTSTRAP_HASKELL_ADJUST_CABAL_CONFIG - whether to adjust mingw paths in cabal.config on windows

 # License: LGPL-3.0

@@ -14,26 +18,76 @@
 # safety subshell to avoid executing anything in case this script is not downloaded properly
 (

-: "${GHCUP_INSTALL_BASE_PREFIX:=$HOME}"
+plat="$(uname -s)"
+arch=$(uname -m)
+ghver="0.1.15.2"
+base_url="https://downloads.haskell.org/~ghcup"

-export GHCUP_USE_XDG_DIRS
+export GHCUP_SKIP_UPDATE_CHECK=yes

-if [ -n "${GHCUP_USE_XDG_DIRS}" ] ; then
-	GHCUP_DIR=${XDG_DATA_HOME:=$HOME/.local/share}/ghcup
-	GHCUP_BIN=${XDG_BIN_HOME:=$HOME/.local/bin}
-else
-	GHCUP_DIR=${GHCUP_INSTALL_BASE_PREFIX}/.ghcup
-	GHCUP_BIN=${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/bin
-fi
+case "${plat}" in
+        MSYS*|MINGW*)
+			: "${GHCUP_INSTALL_BASE_PREFIX:=/c}"
+			GHCUP_DIR=$(cygpath -u "${GHCUP_INSTALL_BASE_PREFIX}/ghcup")
+			GHCUP_BIN=$(cygpath -u "${GHCUP_INSTALL_BASE_PREFIX}/ghcup/bin")
+			: "${GHCUP_MSYS2:=${GHCUP_DIR}/msys64}"
+			;;
+		*)
+			: "${GHCUP_INSTALL_BASE_PREFIX:=$HOME}"
+			export GHCUP_USE_XDG_DIRS
+
+			if [ -n "${GHCUP_USE_XDG_DIRS}" ] ; then
+				GHCUP_DIR=${XDG_DATA_HOME:=$HOME/.local/share}/ghcup
+				GHCUP_BIN=${XDG_BIN_HOME:=$HOME/.local/bin}
+			else
+				GHCUP_DIR=${GHCUP_INSTALL_BASE_PREFIX}/.ghcup
+				GHCUP_BIN=${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/bin
+			fi
+			;;
+esac

 : "${BOOTSTRAP_HASKELL_GHC_VERSION:=recommended}"
 : "${BOOTSTRAP_HASKELL_CABAL_VERSION:=recommended}"

+
 die() {
    (>&2 printf "\\033[0;31m%s\\033[0m\\n" "$1")
    exit 2
 }

+warn() {
+	case "${plat}" in
+			MSYS*|MINGW*)
+				echo -e "\\033[0;35m$1\\033[0m"
+				;;
+			*)
+				printf "\\033[0;35m%s\\033[0m\\n" "$1"
+				;;
+	esac
+}
+
+yellow() {
+	case "${plat}" in
+			MSYS*|MINGW*)
+				echo -e "\\033[0;33m$1\\033[0m"
+				;;
+			*)
+				printf "\\033[0;33m%s\\033[0m\\n" "$1"
+				;;
+	esac
+}
+
+green() {
+	case "${plat}" in
+			MSYS*|MINGW*)
+				echo -e "\\033[0;32m$1\\033[0m"
+				;;
+			*)
+				printf "\\033[0;32m%s\\033[0m\\n" "$1"
+				;;
+	esac
+}
+
 edo() {
    "$@" || die "\"$*\" failed!"
 }
@@ -43,196 +97,155 @@ eghcup() {
 }

 _eghcup() {
+	if [ -n "${BOOTSTRAP_HASKELL_YAML}" ] ; then
+		args="-s ${BOOTSTRAP_HASKELL_YAML}"
+	fi 
    if [ -z "${BOOTSTRAP_HASKELL_VERBOSE}" ] ; then
-        ghcup "$@"
+        "${GHCUP_BIN}/ghcup" ${args} "$@"
    else
-        ghcup --verbose "$@"
+        "${GHCUP_BIN}/ghcup" ${args} --verbose "$@"
    fi
 }

 _done() {
 	echo
-    echo "All done!"
-	echo
-	echo "To start a simple repl, run:"
-	echo "  ghci"
-	echo
-	echo "To start a new haskell project in the current directory, run:"
-	echo "  cabal init --interactive"
-	echo
-	echo "To install other GHC versions, run:"
-	echo "  ghcup tui"
+	echo "==============================================================================="
+	case "${plat}" in
+			MSYS*|MINGW*)
+				green
+				green "All done!"
+				green
+				green "In a new powershell or cmd.exe session, now you can..."
+				green
+				green "Start a simple repl via:"
+				green "  ghci"
+				green
+				green "Start a new haskell project in the current directory via:"
+				green "  cabal init --interactive"
+				green
+				green "Install other GHC versions and tools via:"
+				green "  ghcup list"
+				green "  ghcup install <tool> <version>"
+				green
+				green "To install system libraries and update msys2/mingw64,"
+				green "open the \"Mingw haskell shell\""
+				green "and the \"Mingw package management docs\""
+				green "desktop shortcuts."
+				;;
+			*)
+				green
+				green "All done!"
+				green
+				green "To start a simple repl, run:"
+				green "  ghci"
+				green
+				green "To start a new haskell project in the current directory, run:"
+				green "  cabal init --interactive"
+				green
+				green "To install other GHC versions and tools, run:"
+				green "  ghcup tui"
+				;;
+
+	esac
+

 	exit 0
 }

 download_ghcup() {
-	_plat="$(uname -s)"
-	_arch=$(uname -m)
-	_ghver="0.1.14.1"
-	_base_url="https://downloads.haskell.org/~ghcup"

-    case "${_plat}" in
+    case "${plat}" in
        "linux"|"Linux")
-			case "${_arch}" in
+			case "${arch}" in
 				x86_64|amd64)
 					# we could be in a 32bit docker container, in which
 					# case uname doesn't give us what we want
 					if [ "$(getconf LONG_BIT)" = "32" ] ; then
-						_url=${_base_url}/${_ghver}/i386-linux-ghcup-${_ghver}
+						_url=${base_url}/${ghver}/i386-linux-ghcup-${ghver}
 					elif [ "$(getconf LONG_BIT)" = "64" ] ; then
-						_url=${_base_url}/${_ghver}/x86_64-linux-ghcup-${_ghver}
+						_url=${base_url}/${ghver}/x86_64-linux-ghcup-${ghver}
 					else
 						die "Unknown long bit size: $(getconf LONG_BIT)"
 					fi
 					;;
 				i*86)
-					_url=${_base_url}/${_ghver}/i386-linux-ghcup-${_ghver}
+					_url=${base_url}/${ghver}/i386-linux-ghcup-${ghver}
 					;;
 				armv7*)
-					_url=${_base_url}/${_ghver}/armv7-linux-ghcup-${_ghver}
+					_url=${base_url}/${ghver}/armv7-linux-ghcup-${ghver}
 					;;
 				aarch64|arm64|armv8l)
-					_url=${_base_url}/${_ghver}/aarch64-linux-ghcup-${_ghver}
+					_url=${base_url}/${ghver}/aarch64-linux-ghcup-${ghver}
 					;;
-				*) die "Unknown architecture: ${_arch}"
+				*) die "Unknown architecture: ${arch}"
 					;;
 			esac
 			;;
        "FreeBSD"|"freebsd")
-			case "${_arch}" in
+			case "${arch}" in
 				x86_64|amd64)
 					;;
 				i*86)
 					die "i386 currently not supported!"
 					;;
-				*) die "Unknown architecture: ${_arch}"
+				*) die "Unknown architecture: ${arch}"
 					;;
 			esac
-			_url=${_base_url}/${_ghver}/x86_64-portbld-freebsd-ghcup-${_ghver}
+			_url=${base_url}/${ghver}/x86_64-portbld-freebsd-ghcup-${ghver}
            ;;
        "Darwin"|"darwin")
-			case "${_arch}" in
+			case "${arch}" in
 				x86_64|amd64)
+					_url=${base_url}/${ghver}/x86_64-apple-darwin-ghcup-${ghver}
+					;;
+				aarch64|arm64|armv8l)
+					_url=${base_url}/${ghver}/aarch64-apple-darwin-ghcup-${ghver}
 					;;
 				i*86)
 					die "i386 currently not supported!"
 					;;
-				*) die "Unknown architecture: ${_arch}"
+				*) die "Unknown architecture: ${arch}"
 					;;
 			esac
-			_url=${_base_url}/${_ghver}/x86_64-apple-darwin-ghcup-${_ghver} ;;
-        *) die "Unknown platform: ${_plat}"
+			;;
+        MSYS*|MINGW*)
+			case "${arch}" in
+				x86_64|amd64)
+					_url=${base_url}/${ghver}/x86_64-mingw64-ghcup-${ghver}.exe
+					;;
+				*) die "Unknown architecture: ${arch}"
+					;;
+			esac
+			;;
+        *) die "Unknown platform: ${plat}"
 			;;
    esac
+    case "${plat}" in
+        MSYS*|MINGW*)
+			edo curl -Lf "${_url}" > "${GHCUP_BIN}"/ghcup.exe
+			edo chmod +x "${GHCUP_BIN}"/ghcup.exe
+			;;
+		*)
+			edo curl -Lf "${_url}" > "${GHCUP_BIN}"/ghcup
+			edo chmod +x "${GHCUP_BIN}"/ghcup
+			;;
+	esac

-	edo curl -Lf "${_url}" > "${GHCUP_BIN}"/ghcup
+	edo mkdir -p "${GHCUP_DIR}"

-    edo chmod +x "${GHCUP_BIN}"/ghcup
-
-  edo mkdir -p "${GHCUP_DIR}"
+	# we may overwrite this in adjust_bashrc
 	cat <<-EOF > "${GHCUP_DIR}"/env || die "Failed to create env file"
 		export PATH="\$HOME/.cabal/bin:${GHCUP_BIN}:\$PATH"
 		EOF
+
 	# shellcheck disable=SC1090
    edo . "${GHCUP_DIR}"/env
    eghcup upgrade
-
-	unset _plat _arch _url _ghver _base_url
 }

-
-echo
-echo "Welcome to Haskell!"
-echo
-echo "This script will download and install the following binaries:"
-echo "  * ghcup - The Haskell toolchain installer"
-echo "            (for managing GHC/cabal versions)"
-echo "  * ghc   - The Glasgow Haskell Compiler"
-echo "  * cabal - The Cabal build tool"
-echo
-if [ -z "${GHCUP_USE_XDG_DIRS}" ] ; then
-	echo "ghcup installs only into the following directory,"
-    echo "which can be removed anytime:"
-	echo "  $GHCUP_INSTALL_BASE_PREFIX/.ghcup"
-else
-	echo "ghcup installs into XDG directories as long as"
-    echo "'GHCUP_USE_XDG_DIRS' is set."
-fi
-echo
-
-if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
-    printf "\\033[0;35m%s\\033[0m\\n" "Press ENTER to proceed 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 "${GHCUP_BIN}"
-
-if command -V "ghcup" >/dev/null 2>&1 ; then
-    if [ -z "${BOOTSTRAP_HASKELL_NO_UPGRADE}" ] ; then
-        _eghcup upgrade || download_ghcup
-    fi
-else
-	download_ghcup
-fi
-
-echo
-echo "$(ghcup tool-requirements)"
-echo
-
-if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
-    printf "\\033[0;35m%s\\033[0m\\n" "Press ENTER to proceed 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 ghc "${BOOTSTRAP_HASKELL_GHC_VERSION}"
-
-eghcup set ghc "${BOOTSTRAP_HASKELL_GHC_VERSION}"
-eghcup --cache install cabal "${BOOTSTRAP_HASKELL_CABAL_VERSION}"
-
-edo cabal new-update
-
-printf "\\033[0;35m%s\\033[0m\\n" ""
-printf "\\033[0;35m%s\\033[0m\\n" "Installation done!"
-printf "\\033[0;35m%s\\033[0m\\n" ""
-
-
-if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
-	printf "\\033[0;35m%s\\033[0m\\n" "Do you want to install haskell-language-server (HLS) now?"
-	printf "\\033[0;35m%s\\033[0m\\n" "HLS is a language-server that provides IDE-like functionality"
-	printf "\\033[0;35m%s\\033[0m\\n" "and can integrate with different editors, such as Vim, Emacs, VS Code, Atom, ..."
-	printf "\\033[0;35m%s\\033[0m\\n" "Also see https://github.com/haskell/haskell-language-server/blob/master/README.md"
-	printf "\\033[0;35m%s\\033[0m\\n" ""
-	printf "\\033[0;35m%s\\033[0m\\n" "Answer with YES or NO and press ENTER."
-	printf "\\033[0;35m%s\\033[0m\\n" ""
-
-	while true; do
-		read -r hls_answer </dev/tty
-
-		case $hls_answer in
-			[Yy]*)
-				eghcup --cache install hls
-				break ;;
-			[Nn]*)
-				break ;;
-			*)
-				echo "Please type YES or NO and press enter.";;
-		esac
-	done
-
-    echo "In order to run ghc and cabal, you need to adjust your PATH variable."
-    echo "You may want to source '$GHCUP_DIR/env' in your shell"
-    echo "configuration to do so (e.g. ~/.bashrc)."
-
+# Figures out the users login shell and sets
+# GHCUP_PROFILE_FILE and MY_SHELL variables.
+find_shell() {
 	case $SHELL in
 		*/zsh) # login shell is zsh
 			GHCUP_PROFILE_FILE="$HOME/.zshrc"
@@ -248,67 +261,393 @@ if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
 				GHCUP_PROFILE_FILE="$HOME/.zshrc"
 				MY_SHELL="zsh"
 			else
-			    _done
+				return
 			fi
 			;;
 		*/fish) # login shell is fish
 			GHCUP_PROFILE_FILE="$HOME/.config/fish/config.fish"
 			MY_SHELL="fish" ;;
-		*) _done ;;
+		*) return ;;
+	esac
+}
+
+# Ask user if they want to adjust the bashrc.
+ask_bashrc() {
+	if [ -n "${BOOTSTRAP_HASKELL_ADJUST_BASHRC}" ] ; then
+		return 1
+	fi
+
+	while true; do
+		if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+			echo "-------------------------------------------------------------------------------"
+
+			warn ""
+			warn "Detected ${MY_SHELL} shell on your system..."
+			warn "Do you want ghcup to automatically add the required PATH variable to \"${GHCUP_PROFILE_FILE}\"?"
+			warn ""
+			warn "[P] Yes, prepend  [A] Yes, append  [N] No  [?] Help (default is \"P\")."
+			warn ""
+
+			read -r bashrc_answer </dev/tty
+		else
+			return 1
+		fi
+		case $bashrc_answer in
+			[Pp]* | "")
+				return 1
+				;;
+			[Aa]*)
+				return 2
+				;;
+			[Nn]*)
+				return 0;;
+			*)
+				echo "Possible choices are:"
+				echo
+				echo "P - Yes, prepend to PATH, taking precedence (default)"
+				echo "A - Yes, append to PATH"
+				echo "N - No, don't mess with my configuration"
+				echo
+				echo "Please make your choice and press ENTER."
+				;;
+		esac
+	done
+
+	unset bashrc_answer
+}
+
+# Needs 'find_shell' to be called beforehand.
+adjust_bashrc() {
+	case $1 in
+		1)
+			cat <<-EOF > "${GHCUP_DIR}"/env || die "Failed to create env file"
+				export PATH="\$HOME/.cabal/bin:${GHCUP_BIN}:\$PATH"
+				EOF
+			;;
+		2)
+			cat <<-EOF > "${GHCUP_DIR}"/env || die "Failed to create env file"
+				export PATH="\$HOME/.cabal/bin:\$PATH:${GHCUP_BIN}"
+				EOF
+			;;
+		*) ;;
 	esac

+	case $1 in
+		1 | 2)
+			case $MY_SHELL in
+				"") break ;;
+				fish)
+					mkdir -p "${GHCUP_PROFILE_FILE%/*}"
+					sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
+					case $1 in
+						1)
+							echo "set -q GHCUP_INSTALL_BASE_PREFIX[1]; or set GHCUP_INSTALL_BASE_PREFIX \$HOME ; set -gx PATH \$HOME/.cabal/bin $GHCUP_BIN \$PATH # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+							;;
+						2)
+							echo "set -q GHCUP_INSTALL_BASE_PREFIX[1]; or set GHCUP_INSTALL_BASE_PREFIX \$HOME ; set -gx PATH \$HOME/.cabal/bin \$PATH $GHCUP_BIN # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+							;;
+					esac
+					break ;;
+				bash)
+					sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
+					echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+					case "${plat}" in
+						"Darwin"|"darwin")
+							if ! grep -q "ghcup-env" "${HOME}/.bash_profile" ; then
+								echo "[[ -f ~/.bashrc ]] && source ~/.bashrc # ghcup-env" >> "${HOME}/.bash_profile"
+							fi
+							;;
+					esac
+					break ;;

-	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" ""
+				zsh)
+					sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
+					echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+					break ;;
+			esac
+			warn "OK! ${GHCUP_PROFILE_FILE} has been modified. Restart your terminal for the changes to take effect,"
+			warn "or type \"source ${GHCUP_DIR}/env\" to apply them in your current terminal session."
+			return
+			;;
+		*)
+			;;
+	esac
+}

-    while true; do
-        read -r next_answer </dev/tty
+adjust_cabal_config() {
+	edo cabal user-config -a "extra-prog-path: $(cygpath -w "$GHCUP_BIN"), $(cygpath -w "$HOME"/AppData/Roaming/cabal/bin), $(cygpath -w "$GHCUP_MSYS2"/usr/bin), $(cygpath -w "$GHCUP_MSYS2"/mingw64/bin)" -a "extra-include-dirs: $(cygpath -w "$GHCUP_MSYS2"/mingw64/include)" -a "extra-lib-dirs: $(cygpath -w "$GHCUP_MSYS2"/mingw64/lib)" -f init
+}

-        case $next_answer in
-            [Yy]*)
-				case $MY_SHELL in
-					"") break ;;
-					fish)
-						if ! grep -q "ghcup-env" "${GHCUP_PROFILE_FILE}" ; then
-							mkdir -p "${GHCUP_PROFILE_FILE%/*}"
-							echo "# ghcup-env" >> "${GHCUP_PROFILE_FILE}"
-							echo "set -q GHCUP_INSTALL_BASE_PREFIX[1]; or set GHCUP_INSTALL_BASE_PREFIX \$HOME" >> "${GHCUP_PROFILE_FILE}"
-							echo "test -f $GHCUP_DIR/env ; and set -gx PATH \$HOME/.cabal/bin $GHCUP_BIN \$PATH" >> "${GHCUP_PROFILE_FILE}"
-						fi
-						break ;;
-					bash)
-						if ! grep -q "ghcup-env" "${GHCUP_PROFILE_FILE}" ; then
-							echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
-						fi
-						case "$(uname -s)" in
-							"Darwin"|"darwin")
-								if ! grep -q "ghcup-env" "${HOME}/.bash_profile" ; then
-									echo "[[ -f ~/.bashrc ]] && source ~/.bashrc # ghcup-env" >> "${HOME}/.bash_profile"
-								fi
+ask_cabal_config_init() {
+	case "${plat}" in
+			MSYS*|MINGW*)
+				if [ -n "${BOOTSTRAP_HASKELL_ADJUST_CABAL_CONFIG}" ] ; then
+					return 1
+				fi
+
+				if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+					echo "-------------------------------------------------------------------------------"
+					warn "Create an initial cabal.config including relevant msys2 paths (recommended)?"
+					warn "[Y] Yes  [N] No  [?] Help (default is \"Y\")."
+					echo
+					while true; do
+						read -r mingw_answer </dev/tty
+
+						case $mingw_answer in
+							[Yy]* | "")
+								return 1 ;;
+							[Nn]*)
+								return 0 ;;
+							*)
+								echo "Possible choices are:"
+								echo
+								echo "Y - Yes, create a cabal.config with pre-set paths to msys2/mingw64 (default)"
+								echo "N - No, leave the current/default cabal config untouched"
+								echo
+								echo "Please make your choice and press ENTER."
 								;;
 						esac
-						break ;;
+					done
+				else
+					return 1
+				fi
+				;;
+	esac

-					zsh)
-						if ! grep -q "ghcup-env" "${GHCUP_PROFILE_FILE}" ; then
-							echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
-						fi
-						break ;;
-				esac
-                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 ${GHCUP_DIR}/env\" to apply them in your current terminal session."
-				_done
-                ;;
-            [Nn]*)
-                _done ;;
-            *)
-                echo "Please type YES or NO and press enter.";;
-        esac
-    done
+	unset mingw_answer
+
+    return 0
+}
+
+do_cabal_config_init() {
+	case "${plat}" in
+			MSYS*|MINGW*)
+		case $1 in
+			1)
+				adjust_cabal_config
+				;;
+			0)
+				echo "Make sure that your global cabal.config references the correct mingw64 paths (extra-prog-path, extra-include-dirs and extra-lib-dirs)."
+				echo "And set the environment variable GHCUP_MSYS2 to the root path of your msys2 installation."
+				sleep 5
+				return ;;
+			*) ;;
+		esac
+	esac
+}
+
+ask_hls() {
+	if [ -n "${BOOTSTRAP_HASKELL_INSTALL_HLS}" ] ; then
+		return 1
+	fi
+
+	if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+		echo "-------------------------------------------------------------------------------"
+
+		warn "Do you want to install haskell-language-server (HLS)?"
+		warn "HLS is a language-server that provides IDE-like functionality"
+		warn "and can integrate with different editors, such as Vim, Emacs, VS Code, Atom, ..."
+		warn "Also see https://github.com/haskell/haskell-language-server/blob/master/README.md"
+		warn ""
+		warn "[Y] Yes  [N] No  [?] Help (default is \"N\")."
+		warn ""
+
+		while true; do
+			read -r hls_answer </dev/tty
+
+			case $hls_answer in
+				[Yy]*)
+					return 1
+					;;
+				[Nn]* | "")
+					return 0
+					;;
+				*)
+					echo "Possible choices are:"
+					echo
+					echo "Y - Yes, install the haskell-langauge-server"
+					echo "N - No, don't install anything more (default)"
+					echo
+					echo "Please make your choice and press ENTER."
+					;;
+			esac
+		done
+	else
+		return 0
+	fi
+
+	unset hls_answer
+}
+
+ask_stack() {
+	if [ -n "${BOOTSTRAP_HASKELL_INSTALL_STACK}" ] ; then
+		return 1
+	fi
+
+	if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+		echo "-------------------------------------------------------------------------------"
+
+		warn "Do you want to install stack?"
+		warn "Stack is a haskell build tool similar to cabal that is used by some projects."
+		warn "Also see https://docs.haskellstack.org/"
+		warn ""
+		warn "[Y] Yes  [N] No  [?] Help (default is \"N\")."
+		warn ""
+
+		while true; do
+			read -r stack_answer </dev/tty
+
+			case $stack_answer in
+				[Yy]*)
+					return 1 ;;
+				[Nn]* | "")
+					return 0 ;;
+				*)
+					echo "Possible choices are:"
+					echo
+					echo "Y - Yes, install stack"
+					echo "N - No, don't install anything more (default)"
+					echo
+					echo "Please make your choice and press ENTER."
+					;;
+			esac
+		done
+	else
+		return 0
+	fi
+
+	unset stack_answer
+}
+
+
+find_shell
+
+
+echo
+echo "Welcome to Haskell!"
+echo
+echo "This script will download and install the following binaries:"
+echo "  * ghcup - The Haskell toolchain installer"
+echo "  * ghc   - The Glasgow Haskell Compiler"
+echo "  * cabal - The Cabal build tool for managing Haskell software"
+echo "  * stack - (optional) A cross-platform program for developing Haskell projects"
+echo "  * hls   - (optional) A language server for developers to integrate with their editor/IDE"
+echo
+if [ -z "${GHCUP_USE_XDG_DIRS}" ] ; then
+	echo "ghcup installs only into the following directory,"
+    echo "which can be removed anytime:"
+	case "${plat}" in
+			MSYS*|MINGW*)
+				echo "  $(cygpath -w "$GHCUP_DIR")"
+				;;
+			*)
+				echo "  $GHCUP_DIR"
+				;;
+	esac
+else
+	echo "ghcup installs into XDG directories as long as"
+    echo "'GHCUP_USE_XDG_DIRS' is set."
 fi
+echo
+
+if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+    warn "Press ENTER to proceed or ctrl-c to abort."
+    warn "Note that this script can be re-run at any given time."
+    # Wait for user input to continue.
+    # shellcheck disable=SC2034
+    read -r answer </dev/tty
+fi
+
+ask_bashrc
+ask_bashrc_answer=$?
+ask_cabal_config_init
+ask_cabal_config_init_answer=$?
+ask_hls
+ask_hls_answer=$?
+ask_stack
+ask_stack_answer=$?
+
+edo mkdir -p "${GHCUP_BIN}"
+
+if command -V "ghcup" >/dev/null 2>&1 ; then
+    if [ -z "${BOOTSTRAP_HASKELL_NO_UPGRADE}" ] ; then
+        _eghcup upgrade || download_ghcup
+    fi
+else
+	download_ghcup
+fi
+
+echo
+echo "$(if [ -n "${BOOTSTRAP_HASKELL_YAML}" ] ; then ghcup -s "${BOOTSTRAP_HASKELL_YAML}" tool-requirements ; else ghcup tool-requirements ; fi)"
+echo
+
+if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+    warn "Press ENTER to proceed or ctrl-c to abort."
+    warn "Installation may take a while."
+    echo
+
+    # Wait for user input to continue.
+    # shellcheck disable=SC2034
+    read -r answer </dev/tty
+fi
+
+eghcup --cache install ghc "${BOOTSTRAP_HASKELL_GHC_VERSION}"
+
+eghcup set ghc "${BOOTSTRAP_HASKELL_GHC_VERSION}"
+eghcup --cache install cabal "${BOOTSTRAP_HASKELL_CABAL_VERSION}"
+
+do_cabal_config_init $ask_cabal_config_init_answer
+
+edo cabal new-update
+
+case $ask_hls_answer in
+	1)
+		_eghcup --cache install hls || warn "HLS installation failed, continuing anyway"
+		;;
+	*) ;;
+esac
+
+case $ask_stack_answer in
+	1)
+		_eghcup --cache install stack || warn "Stack installation failed, continuing anyway"
+		;;
+	*) ;;
+esac
+
+
+
+# short-circuit script based on platform
+case "${plat}" in
+        MSYS*|MINGW*)
+			# For windows we always adjust bashrc, since it's inside msys2
+			adjust_bashrc $adjust_bashrc_answer
+			;;
+		*)
+        	if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+				case $ask_bashrc_answer in
+					1 | 2)
+						echo
+						echo "==============================================================================="
+						echo
+						yellow "In order to run ghc and cabal, start a new shell or"
+						yellow "run 'source $GHCUP_DIR/env' in your current shell session."
+						adjust_bashrc $adjust_bashrc_answer
+						;;
+					*)
+						echo
+						echo "==============================================================================="
+						echo
+						yellow "In order to run ghc and cabal, you need to adjust your PATH variable."
+						yellow "You may want to source '$GHCUP_DIR/env' in your shell"
+						yellow "configuration to do so (e.g. ~/.bashrc)."
+						;;
+				esac
+			fi
+			;;
+esac
+
+_done
+
 )

 # vim: tabstop=4 shiftwidth=4 expandtab
--- a/bootstrap-haskell.ps1
+++ b/bootstrap-haskell.ps1
@@ -0,0 +1,485 @@
+<#
+    .SYNOPSIS
+    Script to bootstrap a Haskell environment
+
+    .DESCRIPTION
+    This is the windows GHCup installer, installing:
+
+    * ghcup - The Haskell toolchain installer"
+    * ghc   - The Glasgow Haskell Compiler"
+    * msys2 - Unix-style toolchain needed for dependencies and tools
+    * cabal - The Cabal build tool for managing Haskell software"
+    * stack - (optional) A cross-platform program for developing Haskell projects"
+    * hls   - (optional) A language server for developers to integrate with their editor/IDE"
+#>
+param (
+    # Run an interactive installation
+    [switch]$Interactive,
+    # Specify the install root (default: 'C:\')
+    [string]$InstallDir,
+    # Instead of installing a new MSys2, use an existing installation
+    [string]$ExistingMsys2Dir,
+    # Specify the cabal root directory (default: '$InstallDir\cabal')
+    [string]$CabalDir,
+    # Overwrite (or rather backup) a previous install
+    [switch]$Overwrite,
+    # Specify the bootstrap url (default: 'https://www.haskell.org/ghcup/sh/bootstrap-haskell')
+    [string]$BootstrapUrl,
+    # Run the final bootstrap script via 'bash' instead of a full newly spawned msys2 shell
+    [switch]$InBash,
+    # Whether to install stack as well
+    [switch]$InstallStack,
+    # Whether to install hls as well
+    [switch]$InstallHLS,
+    # Skip adjusting cabal.config with mingw paths
+    [switch]$NoAdjustCabalConfig
+)
+
+$Silent = !$Interactive
+
+function Print-Msg {
+  param ( [Parameter(Mandatory=$true, HelpMessage='String to output')][string]$msg, [string]$color = "Green" )
+  Write-Host ('{0}' -f $msg) -ForegroundColor $color
+}
+
+function Create-Shortcut {
+    param ( [Parameter(Mandatory=$true,HelpMessage='Target path')][string]$SourceExe, [Parameter(Mandatory=$true,HelpMessage='Arguments to the path/exe')][AllowEmptyString()]$ArgumentsToSourceExe, [Parameter(Mandatory=$true,HelpMessage='The destination of the desktop link')][string]$DestinationPath )
+    $WshShell = New-Object -comObject WScript.Shell
+    $Shortcut = $WshShell.CreateShortcut($DestinationPath)
+    $Shortcut.TargetPath = $SourceExe
+    if($ArgumentsToSourceExe) {
+      $Shortcut.Arguments = $ArgumentsToSourceExe
+    }
+    $Shortcut.Save()
+}
+
+function Add-EnvPath {
+  param(
+      [Parameter(Mandatory=$true,HelpMessage='The Path to add to Users environment')]
+      [string] $Path,
+
+      [ValidateSet('Machine', 'User', 'Session')]
+      [string] $Container = 'Session'
+  )
+
+  if ($Container -eq 'Session') {
+      $envPaths = [Collections.Generic.List[String]]($env:Path -split ([IO.Path]::PathSeparator))
+      if ($envPaths -notcontains $Path) {
+          $envPaths.Add($Path)
+          $env:PATH = $envPaths -join ([IO.Path]::PathSeparator)
+      }
+  }
+  else {
+      [Microsoft.Win32.RegistryHive]$hive, $keyPath = switch ($Container) {
+          'Machine' { 'LocalMachine', 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment' }
+          'User' { 'CurrentUser', 'Environment' }
+      }
+
+      $hiveKey = $envKey = $null
+      try {
+          $hiveKey = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey($hive, '')
+          $envKey = $hiveKey.OpenSubKey($keyPath, $true)
+          $rawPath = $envKey.GetValue('PATH', '', 'DoNotExpandEnvironmentNames')
+
+          $envPaths = [Collections.Generic.List[String]]($rawPath -split ([IO.Path]::PathSeparator))
+          if ($envPaths -notcontains $Path) {
+              $envPaths.Add($Path)
+              $envKey.SetValue('PATH', ($envPaths -join ([IO.Path]::PathSeparator)), 'ExpandString')
+          }
+      }
+      finally {
+          if ($envKey) { $envKey.Close() }
+          if ($hiveKey) { $hiveKey.Close() }
+      }
+  }
+}
+
+
+
+filter Get-FileSize {
+	'{0:N2} {1}' -f $(
+	if ($_ -lt 1kb) { $_, 'Bytes' }
+	elseif ($_ -lt 1mb) { ($_/1kb), 'KB' }
+	elseif ($_ -lt 1gb) { ($_/1mb), 'MB' }
+	elseif ($_ -lt 1tb) { ($_/1gb), 'GB' }
+	elseif ($_ -lt 1pb) { ($_/1tb), 'TB' }
+	else { ($_/1pb), 'PB' }
+	)
+}
+
+function Get-FileWCSynchronous{
+    param(
+        [Parameter(Mandatory=$true)]
+        [string]$url, 
+        [string]$destinationFolder="$env:USERPROFILE\Downloads",
+        [switch]$includeStats
+    )
+    $wc = New-Object -TypeName Net.WebClient
+    $wc.UseDefaultCredentials = $true
+    $destination = Join-Path -Path $destinationFolder -ChildPath ($url | Split-Path -Leaf)
+    $start = Get-Date
+    $wc.DownloadFile($url, $destination)
+    $elapsed = ((Get-Date) - $start).ToString('hh\:mm\:ss')
+    $totalSize = (Get-Item -Path $destination).Length | Get-FileSize
+    if ($includeStats.IsPresent){
+        [PSCustomObject]@{Name=$MyInvocation.MyCommand;TotalSize=$totalSize;Time=$elapsed}
+    }
+    Get-Item -Path $destination | Unblock-File
+}
+
+function Test-AbsolutePath {
+  Param (
+      [Parameter(Mandatory=$True)]
+      [ValidateScript({[System.IO.Path]::IsPathRooted($_)})]
+      [String]$Path
+  )
+}
+
+function Exec
+{
+    [CmdletBinding()]
+    param(
+        [Parameter(Position = 0, Mandatory = 1)][string]$cmd,
+        [Parameter()][string]$errorMessage,
+        [parameter(ValueFromRemainingArguments = $true)]
+        [string[]]$Passthrough
+    )
+    & $cmd @Passthrough
+    if ($lastexitcode -ne 0) {
+        if (!($errorMessage)) {
+          throw ('Exec: Error executing command {0} with arguments ''{1}''' -f $cmd, "$Passthrough")
+        } else {
+          throw ('Exec: ' + $errorMessage)
+        }
+    }
+}
+
+$ErrorActionPreference = 'Stop'
+
+$GhcupBasePrefixEnv = [System.Environment]::GetEnvironmentVariable('GHCUP_INSTALL_BASE_PREFIX', 'user')
+
+if ($GhcupBasePrefixEnv) {
+  $defaultGhcupBasePrefix = $GhcupBasePrefixEnv
+} else {
+  $partitions = Get-CimInstance win32_logicaldisk
+  $defaultGhcupBasePrefix = $null
+  foreach ($p in $partitions){
+    try {
+      if ($p."FreeSpace" -lt 5368709120) { # at least 5 GB are needed
+        throw ("Not enough free space on {0}" -f $p."DeviceId")
+      }
+      $null = New-Item -Path ('{0}\' -f $p."DeviceId") -Name "ghcup.test" -ItemType "directory" -Force
+      $defaultGhcupBasePrefix = ('{0}\' -f $p."DeviceId")
+      Remove-Item -LiteralPath ('{0}\ghcup.test' -f $p."DeviceId")
+      break
+    } catch {
+      Print-Msg -color Yellow -msg ("{0} not writable or not enough disk space, trying next device" -f $p."DeviceId")
+    }
+  }
+  if ($defaultGhcupBasePrefix) {
+    Print-Msg -color Green -msg ("Picked {0} as default Install prefix!" -f $defaultGhcupBasePrefix)
+  } else {
+    Print-Msg -color Red -msg "Couldn't find a writable partition with at least 5GB free disk space!"
+    Exit 1    
+  }
+}
+
+# ask for base install prefix
+if ($Silent -and !($InstallDir)) {
+  $GhcupBasePrefix = $defaultGhcupBasePrefix
+} elseif ($InstallDir) {
+  if (!(Test-Path -LiteralPath ('{0}' -f $InstallDir) -IsValid)) {
+    Print-Msg -color Red -msg "Not a valid directory!"
+    Exit 1
+  } elseif (!(Split-Path -IsAbsolute -Path "$InstallDir")) {
+    Print-Msg -color Red -msg "Non-absolute Path specified!"
+    Exit 1
+  } else {
+    $GhcupBasePrefix = $InstallDir
+  }
+} else {
+  while ($true) {
+    Print-Msg -color Magenta -msg ('Where to install to (this should be a short Path, preferably a Drive like ''C:\''){1}Press enter to accept the default [{0}]:' -f $defaultGhcupBasePrefix, "`n")
+    $basePrefixPrompt = Read-Host
+    $GhcupBasePrefix = ($defaultGhcupBasePrefix,$basePrefixPrompt)[[bool]$basePrefixPrompt]
+    if (!($GhcupBasePrefix.EndsWith('\'))) {
+      $GhcupBasePrefix = ('{0}\' -f $GhcupBasePrefix)
+    }
+  
+    if (!($GhcupBasePrefix)) {
+      Print-Msg -color Red -msg "No directory specified!"
+    } elseif (!(Test-Path -LiteralPath ('{0}' -f $GhcupBasePrefix))) {
+      Print-Msg -color Red -msg "Directory does not exist, need to specify an existing Drive/Directory"
+    } elseif (!(Split-Path -IsAbsolute -Path "$GhcupBasePrefix")) {
+      Print-Msg -color Red -msg "Invalid/Non-absolute Path specified"
+    } else {
+      Break
+    }
+  }
+}
+
+Print-Msg -msg ('Setting env variable GHCUP_INSTALL_BASE_PREFIX to ''{0}''' -f $GhcupBasePrefix)
+$null = [Environment]::SetEnvironmentVariable("GHCUP_INSTALL_BASE_PREFIX", $GhcupBasePrefix, [System.EnvironmentVariableTarget]::User)
+
+
+$GhcupDir = ('{0}\ghcup' -f $GhcupBasePrefix)
+$MsysDir = ('{0}\msys64' -f $GhcupDir)
+$Bash = ('{0}\usr\bin\bash' -f $MsysDir)
+if (!($BootstrapUrl)) {
+  $BootstrapUrl = 'https://www.haskell.org/ghcup/sh/bootstrap-haskell'
+}
+$GhcupMsys2 = [System.Environment]::GetEnvironmentVariable('GHCUP_MSYS2', 'user')
+
+Print-Msg -msg 'Preparing for GHCup installation...'
+
+# ask what to do in case ghcup is already installed
+if (Test-Path -LiteralPath ('{0}' -f $GhcupDir)) {
+  Print-Msg -msg ('GHCup already installed at ''{0}''...' -f $GhcupDir)
+  if ($Overwrite) {
+    $decision = 0
+  } elseif (!($Silent)) {
+    $decision = $Host.UI.PromptForChoice('Install GHCup'
+                                        , 'GHCup is already installed, what do you want to do?'
+                                        , [System.Management.Automation.Host.ChoiceDescription[]] @('&Reinstall'
+                                            '&Continue'
+                                            '&Abort'), 1)
+  } else {
+    $decision = 1
+  }
+
+  if ($decision -eq 0) {
+    $suffix = [IO.Path]::GetRandomFileName()
+    Print-Msg -msg ('Backing up {0} to {0}-{1} ...' -f $GhcupDir, $suffix)
+    Rename-Item -Path ('{0}' -f $GhcupDir) -NewName ('{0}-{1}' -f $GhcupDir, $suffix)
+  } elseif ($decision -eq 1) {
+    Print-Msg -msg 'Continuing installation...'
+  } elseif ($decision -eq 2) {
+    Exit 0
+  }
+}
+
+
+$null = New-Item -Path ('{0}' -f $GhcupDir) -ItemType 'directory' -ErrorAction SilentlyContinue
+$null = New-Item -Path ('{0}' -f $GhcupDir) -Name 'bin' -ItemType 'directory' -ErrorAction SilentlyContinue
+
+# ask for cabal dir destination
+if ($CabalDir) {
+  $CabDirEnv = $CabalDir
+  if (!($CabDirEnv)) {
+    Print-Msg -color Red -msg "No directory specified!"
+    Exit 1        
+  } elseif (!(Split-Path -IsAbsolute -Path "$CabDirEnv")) {
+    Print-Msg -color Red -msg "Invalid/Non-absolute Path specified"
+    Exit 1
+  }
+} elseif (!($Silent)) {
+  while ($true) {
+
+    $defaultCabalDir = ('{0}\cabal' -f $GhcupBasePrefix)
+    Print-Msg -color Magenta -msg ('Specify Cabal directory (this is where haskell packages end up). Press enter to accept the default [{0}]:' -f $defaultCabalDir)
+    $CabalDirPrompt = Read-Host
+    $CabDirEnv = ($defaultCabalDir,$CabalDirPrompt)[[bool]$CabalDirPrompt]
+
+    if (!($CabDirEnv)) {
+      Print-Msg -color Red -msg "No directory specified!"         
+    } elseif (!(Split-Path -IsAbsolute -Path "$CabDirEnv")) {
+      Print-Msg -color Red -msg "Invalid/Non-absolute Path specified"
+    } else {
+      Break
+    }
+  }
+} else {
+  $CabDirEnv = ('{0}\cabal' -f $GhcupBasePrefix)
+}
+
+# ask whether to install HLS
+if (!($InstallHLS)) {
+  if (!($Silent)) {
+    $HLSdecision = $Host.UI.PromptForChoice('Install HLS'
+      , 'Do you want to install the haskell-language-server (HLS) for development purposes as well?'
+      , [System.Management.Automation.Host.ChoiceDescription[]] @('&Yes'
+          '&No'
+          '&Abort'), 1)
+
+    if ($HLSdecision -eq 0) {
+      $InstallHLS = $true
+    } elseif ($HLSdecision -eq 2) {
+      Exit 0
+    }
+  }
+}
+
+# ask whether to install stack
+if (!($InstallStack)) {
+  if (!($Silent)) {
+    $StackDecision = $Host.UI.PromptForChoice('Install stack'
+      , 'Do you want to install stack as well?'
+      , [System.Management.Automation.Host.ChoiceDescription[]] @('&Yes'
+          '&No'
+          '&Abort'), 1)
+
+    if ($StackDecision -eq 0) {
+      $InstallStack = $true
+    } elseif ($StackDecision -eq 2) {
+      Exit 0
+    }
+  }
+}
+
+
+# mingw foo
+Print-Msg -msg 'First checking for Msys2...'
+if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
+  if ($Silent) {
+    $msys2Decision = 0
+  } else {
+    $msys2Decision = $Host.UI.PromptForChoice('Install MSys2'
+        , 'Do you want GHCup to install a default MSys2 toolchain (recommended)?'
+        , [System.Management.Automation.Host.ChoiceDescription[]] @('&Yes'
+            '&No'), 0)
+  }
+
+  if ($msys2Decision -eq 0) {
+    Print-Msg -msg ('...Msys2 doesn''t exist, installing into {0}' -f $MsysDir)
+
+	Print-Msg -msg 'Starting installation in 5 seconds, this may take a while...'
+	Start-Sleep -s 5
+
+    # Download the archive
+    Print-Msg -msg 'Downloading Msys2 archive...'
+    $archive = 'msys2-x86_64-latest.sfx.exe'
+    
+    if (Get-Command -Name 'curl.exe' -ErrorAction SilentlyContinue) {
+      Exec "curl.exe" '-o' ('{0}\{1}' -f $env:TEMP, $archive) ('https://repo.msys2.org/distrib/{0}' -f $archive)
+    } else {
+      Get-FileWCSynchronous -url ('https://repo.msys2.org/distrib/{0}' -f $archive) -destinationFolder "$env:TEMP" -includeStats
+    }
+
+    Print-Msg -msg 'Extracting Msys2 archive...'
+    $null = & "$env:TEMP\$archive" '-y' ('-o{0}' -f $GhcupDir)  # Extract
+    Remove-Item -Path ('{0}/{1}' -f $env:TEMP, $archive)
+
+    Print-Msg -msg 'Processing MSYS2 bash for first time use...'
+    Exec "$Bash" '-lc' 'exit'
+
+    Exec "$env:windir\system32\taskkill.exe" /F /FI `"MODULES eq msys-2.0.dll`"
+
+    Print-Msg -msg 'Upgrading full system...'
+    Exec "$Bash" '-lc' 'pacman --noconfirm -Syuu'
+
+    Print-Msg -msg 'Upgrading full system twice...'
+    Exec "$Bash" '-lc' 'pacman --noconfirm -Syuu'
+
+    Print-Msg -msg 'Installing Dependencies...'
+    Exec "$Bash" '-lc' 'pacman --noconfirm -S --needed curl mingw-w64-x86_64-pkgconf'
+
+    Print-Msg -msg 'Updating SSL root certificate authorities...'
+    Exec "$Bash" '-lc' 'pacman --noconfirm -S ca-certificates'
+
+    Print-Msg -msg 'Setting default home directory...'
+    Exec "$Bash" '-lc' "sed -i -e 's/db_home:.*$/db_home: windows/' /etc/nsswitch.conf"
+  } elseif ($msys2Decision -eq 1) {
+    Print-Msg -color Yellow -msg 'Skipping MSys2 installation.'
+    while ($true) {
+      if ($GhcupMsys2) {
+        $defaultMsys2Dir = $GhcupMsys2
+        Print-Msg -color Magenta -msg ('Input existing MSys2 toolchain directory. Press enter to accept the default [{0}]:' -f $defaultMsys2Dir)
+        $MsysDirPrompt = Read-Host
+        $MsysDir = ($defaultMsys2Dir,$MsysDirPrompt)[[bool]$MsysDirPrompt]
+      } else {
+        Print-Msg -color Magenta -msg 'Input existing MSys2 toolchain directory:' 
+        $MsysDir = Read-Host
+      }
+      if (!($MsysDir)) {
+        Print-Msg -color Red -msg "No directory specified!"         
+      } elseif (!(Test-Path -LiteralPath ('{0}' -f $MsysDir))) {
+        Print-Msg -color Red -msg ('MSys2 installation at ''{0}'' could not be found!' -f $MsysDir)
+      } elseif (!(Split-Path -IsAbsolute -Path "$MsysDir")) {
+        Print-Msg -color Red -msg "Invalid/Non-absolute Path specified"
+      } else {
+        Break
+      }
+    }
+    Print-Msg -msg ('Setting GHCUP_MSYS2 env var to ''{0}''' -f $MsysDir)
+    $null = [Environment]::SetEnvironmentVariable("GHCUP_MSYS2", $MsysDir, [System.EnvironmentVariableTarget]::User)
+    $Bash = ('{0}\usr\bin\bash' -f $MsysDir)
+  }
+} else {
+    Print-Msg -msg ('...Msys2 found in {0} ...skipping Msys2 installation.' -f $MsysDir)
+
+	Print-Msg -msg 'Starting installation in 5 seconds, this may take a while...'
+	Start-Sleep -s 5
+}
+
+Print-Msg -msg 'Creating shortcuts...'
+$DesktopDir = [Environment]::GetFolderPath("Desktop")
+$GhcInstArgs = '-mingw64 -mintty -c "pacman --noconfirm -S --needed base-devel gettext autoconf make libtool automake python p7zip patch unzip"'
+Create-Shortcut -SourceExe ('{0}\msys2_shell.cmd' -f $MsysDir) -ArgumentsToSourceExe $GhcInstArgs -DestinationPath ('{0}\Install GHC dev dependencies.lnk' -f $DesktopDir)
+Create-Shortcut -SourceExe ('{0}\msys2_shell.cmd' -f $MsysDir) -ArgumentsToSourceExe '-mingw64' -DestinationPath ('{0}\Mingw haskell shell.lnk' -f $DesktopDir)
+Create-Shortcut -SourceExe 'https://www.msys2.org/docs/package-management' -ArgumentsToSourceExe '' -DestinationPath ('{0}\Mingw package management docs.url' -f $DesktopDir)
+
+Print-Msg -msg ('Adding {0}\bin to Users Path...' -f $GhcupDir)
+Add-EnvPath -Path ('{0}\bin' -f ([System.IO.Path]::GetFullPath("$GhcupDir"))) -Container 'User'
+
+
+
+$CabalDirFull = [System.IO.Path]::GetFullPath("$CabDirEnv")
+Print-Msg -msg ('Setting CABAL_DIR to ''{0}''' -f $CabalDirFull)
+$null = [Environment]::SetEnvironmentVariable("CABAL_DIR", $CabalDirFull, [System.EnvironmentVariableTarget]::User)
+
+Print-Msg -msg 'Starting GHCup installer...'
+
+$Msys2Shell = ('{0}\msys2_shell.cmd' -f $MsysDir)
+
+# The bootstrap script is always silent, since we ask relevant questions here
+$SilentExport = 'export BOOTSTRAP_HASKELL_NONINTERACTIVE=1 ;'
+
+if ($InstallStack) {
+  $StackInstallExport = 'export BOOTSTRAP_HASKELL_INSTALL_STACK=1 ;'
+}
+
+if ($InstallHLS) {
+  $HLSInstallExport = 'export BOOTSTRAP_HASKELL_INSTALL_HLS=1 ;'
+}
+
+if (!($NoAdjustCabalConfig)) {
+  $AdjustCabalConfigExport = 'export BOOTSTRAP_HASKELL_ADJUST_CABAL_CONFIG=1 ;'
+}
+
+if ((Get-Process -ID $PID).ProcessName.StartsWith("bootstrap-haskell") -Or $InBash) {
+  Exec "$Bash" '-lc' ('{4} {6} {7} {8} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport)
+} else {
+  Exec "$Msys2Shell" '-mingw64' '-mintty' '-c' ('{4} {6} {7} {8} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; trap ''echo Press any key to exit && read -n 1 && exit'' 2 ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash ; echo ''Press any key to exit'' && read -n 1' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport)
+}
+
+
+# SIG # Begin signature block
+  # MIID4QYJKoZIhvcNAQcCoIID0jCCA84CAQExCzAJBgUrDgMCGgUAMGkGCisGAQQB
+  # gjcCAQSgWzBZMDQGCisGAQQBgjcCAR4wJgIDAQAABBAfzDtgWUsITrck0sYpfvNR
+  # AgEAAgEAAgEAAgEAAgEAMCEwCQYFKw4DAhoFAAQUVqKek181kF/Jx/P7z176herc
+  # ZyCgggH/MIIB+zCCAWSgAwIBAgIQGOezhGS1A5tHh9VubW0liDANBgkqhkiG9w0B
+  # AQUFADAYMRYwFAYDVQQDDA1KdWxpYW4gT3NwYWxkMB4XDTIxMDUzMDE4Mzk1OVoX
+  # DTI1MDUzMDAwMDAwMFowGDEWMBQGA1UEAwwNSnVsaWFuIE9zcGFsZDCBnzANBgkq
+  # hkiG9w0BAQEFAAOBjQAwgYkCgYEAs76XCXYPM14buR1RkVKhOB8pyM4Df6kPaz75
+  # nkbA0nq1VmMhBfCYFWyYHd7jniqTH0LoAKGGquN1bniREaCP9j2pFWpMIgLpQH3H
+  # +jpsfmxV2BTG8q+Jok88gTXS1FlAk72E85zO/Jhr6Fja1aFYAdibBRsRxcVMTVh7
+  # 4AGLNGUCAwEAAaNGMEQwEwYDVR0lBAwwCgYIKwYBBQUHAwMwHQYDVR0OBBYEFC+R
+  # hdhPo0Ty5HnzHyo1pN35IfZQMA4GA1UdDwEB/wQEAwIHgDANBgkqhkiG9w0BAQUF
+  # AAOBgQAl3IdBVIwbJJDp7BksMYPeM4ivB3UyNvlw8aVxGwAzNgdSaezYIdMFtKXV
+  # CSv5bd4VnFRAPDJW9dhW0h3SkeJUoklUxMjKXhR3qygQhSxPDjIatAuOCffGACba
+  # ZZ7Om40b+pKXc6i/HnlApk9DGbXJ59bFcLGGcZ9QjoUae6Ex1DGCAUwwggFIAgEB
+  # MCwwGDEWMBQGA1UEAwwNSnVsaWFuIE9zcGFsZAIQGOezhGS1A5tHh9VubW0liDAJ
+  # BgUrDgMCGgUAoHgwGAYKKwYBBAGCNwIBDDEKMAigAoAAoQKAADAZBgkqhkiG9w0B
+  # CQMxDAYKKwYBBAGCNwIBBDAcBgorBgEEAYI3AgELMQ4wDAYKKwYBBAGCNwIBFTAj
+  # BgkqhkiG9w0BCQQxFgQUosm9nN1JgajqSBa1cUwxxhLrAsYwDQYJKoZIhvcNAQEB
+  # BQAEgYCnKzfsH1aDjS6xkC/uymjaBowHSnh6nFu2AkjcKu8RgcBZzP5SLBXgU9wm
+  # aED5Ujwyq3Qre+TGVRUqwkEauDhQiX2A008G00fRO6+di6yJRCRn5eaRAbdU3Xww
+  # E5VhEwLBnwzWrvLKtdEclhgUCo5Tq87QMXVdgX4aRmunl4ZE+Q==
+# SIG # End signature block
+
+
+
+
+
+
+
--- a/cabal.ghc8104.project
+++ b/cabal.ghc8104.project
@@ -1,20 +0,0 @@
-packages: ./ghcup.cabal
-
-with-compiler: ghc-8.10.4
-
-optional-packages: ./3rdparty/*/*.cabal
-
-optimization: 2
-
-package streamly
-    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
-
-package ghcup
-    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
-
-constraints: http-io-streams -brotli
-
-package libarchive
-  flags: -system-libarchive
-
-allow-newer: base, ghc-prim, template-haskell
--- a/cabal.ghc8105.project
+++ b/cabal.ghc8105.project
@@ -0,0 +1,28 @@
+packages: ./ghcup.cabal
+
+optional-packages: ./vendored/*/*.cabal
+
+optimization: 2
+
+package ghcup
+    tests: True
+    flags: +tui
+
+source-repository-package
+    type: git
+    location: https://github.com/Bodigrim/tar
+    tag: ac197ec7ea4838dc2b4e22b9b888b080cedf29cf
+
+source-repository-package
+    type: git
+    location: https://github.com/bgamari/terminal-size
+    tag: 34ea816bd63f75f800eedac12c6908c6f3736036
+
+constraints: http-io-streams -brotli
+
+package libarchive
+  flags: -system-libarchive
+
+allow-newer: base, ghc-prim, template-haskell, language-c
+
+with-compiler: ghc-8.10.5
--- a/cabal.ghc8105.project.freeze
+++ b/cabal.ghc8105.project.freeze
@@ -1,12 +1,11 @@
 active-repositories: hackage.haskell.org:merge
 constraints: any.Cabal ==3.2.1.0,
             any.HUnit ==1.6.2.0,
-             any.IfElse ==0.85,
+             any.HsOpenSSL ==0.11.7,
+             HsOpenSSL -fast-bignum -homebrew-openssl -macports-openssl -use-pkg-config,
             any.QuickCheck ==2.14.2,
             QuickCheck -old-random +templatehaskell,
             any.StateVar ==1.2.1,
-             any.abstract-deque ==0.3,
-             abstract-deque -usecas,
             any.aeson ==1.5.6.0,
             aeson -bytestring-builder -cffi -developer -fast,
             any.aeson-pretty ==0.8.8,
@@ -18,31 +17,32 @@ constraints: any.Cabal ==3.2.1.0,
             any.ansi-wl-pprint ==0.6.9,
             ansi-wl-pprint -example,
             any.array ==0.5.4.0,
-             any.ascii-string ==1.0.1.4,
             any.assoc ==1.0.2,
             any.async ==2.2.3,
             async -bench,
-             any.atomic-primops ==0.8.4,
-             atomic-primops -debug,
             any.attoparsec ==0.13.2.5,
             attoparsec -developer,
             any.auto-update ==0.1.6,
-             any.base ==4.14.1.0,
+             any.base ==4.14.2.0,
             any.base-compat ==0.11.2,
             any.base-compat-batteries ==0.11.2,
             any.base-orphans ==0.8.4,
             any.base16-bytestring ==1.0.1.0,
-             any.base64-bytestring ==1.2.0.1,
-             any.bifunctors ==5.5.10,
+             any.base64-bytestring ==1.1.0.0,
+             any.bifunctors ==5.5.11,
             bifunctors +semigroups +tagged,
             any.binary ==0.8.8.0,
+             any.bindings-DSL ==1.0.25,
             any.blaze-builder ==0.4.2.1,
+             any.brick ==0.61,
+             brick -demos,
             any.bytestring ==0.10.12.0,
             any.bz2 ==1.0.1.0,
             bz2 -cross +with-bzlib,
-             any.c2hs ==0.28.7,
+             any.bzlib-conduit ==0.3.0.2,
+             any.c2hs ==0.28.8,
             c2hs +base3 -regression,
-             any.call-stack ==0.3.0,
+             any.call-stack ==0.4.0,
             any.case-insensitive ==1.2.1.0,
             any.casing ==0.1.4.1,
             any.cereal ==0.5.8.1,
@@ -54,7 +54,7 @@ constraints: any.Cabal ==3.2.1.0,
             clock -llvm,
             any.cmdargs ==0.10.21,
             cmdargs +quotation -testprog,
-             any.colour ==2.3.5,
+             any.colour ==2.3.6,
             any.comonad ==5.0.8,
             comonad +containers +distributive +indexed-traversable,
             any.composition-prelude ==3.0.0.2,
@@ -62,16 +62,25 @@ constraints: any.Cabal ==3.2.1.0,
             any.concurrent-output ==1.10.12,
             any.conduit ==1.3.4.1,
             any.conduit-extra ==1.3.5,
-             any.containers ==0.6.2.1,
+             any.conduit-zstd ==0.0.2.0,
+             any.config-ini ==0.2.4.0,
+             config-ini -enable-doctests,
+             any.containers ==0.6.4.1,
             any.contravariant ==1.5.3,
             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-default-class ==0.1.2.0,
             any.data-fix ==0.3.1,
             any.deepseq ==1.4.4.0,
-             any.deferred-folds ==0.9.17,
+             any.digest ==0.0.1.3,
+             digest -bytestring-in-base,
             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,
@@ -79,62 +88,55 @@ constraints: any.Cabal ==3.2.1.0,
             any.easy-file ==0.2.2,
             any.errors ==2.3.0,
             any.exceptions ==0.10.4,
-             any.fast-logger ==3.0.3,
+             any.extra ==1.7.9,
+             any.fast-logger ==3.0.5,
             any.filepath ==1.4.2.1,
-             any.focus ==1.0.2,
-             any.foldl ==1.4.11,
-             any.free ==5.1.6,
-             any.fusion-plugin-types ==0.1.0,
+             any.free ==5.1.7,
             any.generic-arbitrary ==0.1.0,
             any.generics-sop ==0.5.1.1,
-             any.ghc-boot-th ==8.10.4,
+             any.ghc-boot-th ==8.10.5,
+             any.ghc-byteorder ==4.11.0.0.10,
             any.ghc-prim ==0.6.1,
-             ghcup -internal-downloader -tar -tui,
             any.happy ==1.20.0,
-             any.hashable ==1.3.1.0,
-             hashable +integer-gmp,
+             any.hashable ==1.3.2.0,
+             hashable +integer-gmp -random-initial-seed,
             any.haskell-src-exts ==1.23.1,
             any.haskell-src-meta ==0.8.7,
             any.haskus-utils-data ==1.4,
             any.haskus-utils-types ==1.5.1,
             any.haskus-utils-variant ==3.1,
-             any.heaps ==0.3.6.1,
-             any.hpath ==0.11.0,
-             any.hpath-directory ==0.14.1,
             any.hpath-filepath ==0.10.4,
-             any.hpath-io ==0.14.1,
-             any.hpath-posix ==0.13.2,
+             any.hpath-posix ==0.13.3,
             any.hsc2hs ==0.68.7,
             hsc2hs -in-ghc-tree,
-             any.hspec ==2.7.8,
-             any.hspec-core ==2.7.8,
-             any.hspec-discover ==2.7.8,
+             any.hspec ==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 ==0.7.0.0,
-             any.indexed-profunctors ==0.1,
+             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.language-c ==0.8.3,
-             language-c -allwarnings +iecfpextension +separatesyb +usebytestrings,
-             any.libarchive ==3.0.2.1,
+             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 ==3.0.2.2,
             libarchive -cross -low-memory -system-libarchive,
             any.libyaml ==0.1.2,
             libyaml -no-unicode -system-libyaml,
             any.lifted-base ==0.2.3.12,
-             any.list-t ==1.0.4,
-             any.lockfree-queue ==0.2.3.1,
-             lzma -static,
-             any.math-functions ==0.3.4.1,
-             math-functions +system-erf +system-expm1,
+             any.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 ==0.4.3.9,
-             any.mmorph ==1.1.5,
+             any.microlens-th ==0.4.3.10,
             any.monad-control ==1.0.2.3,
             any.monad-logger ==0.3.36,
             monad-logger +template_haskell,
@@ -142,11 +144,12 @@ constraints: any.Cabal ==3.2.1.0,
             monad-loops +base4,
             any.mono-traversable ==1.0.15.1,
             any.mtl ==2.2.2,
-             any.mwc-random ==0.15.0.1,
-             any.network ==3.1.2.1,
+             any.network ==3.1.2.2,
             network -devel,
+             any.network-uri ==2.6.4.1,
             any.old-locale ==1.0.0.7,
             any.old-time ==1.1.0.3,
+             any.openssl-streams ==1.2.3.0,
             any.optics ==0.4,
             any.optics-core ==0.4,
             optics-core -explicit-generic-labels,
@@ -161,25 +164,25 @@ constraints: any.Cabal ==3.2.1.0,
             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 ==0.7.1.0,
-             any.primitive-extras ==0.8.2,
-             any.primitive-unlifted ==0.1.3.0,
             any.process ==1.6.9.0,
             any.profunctors ==5.6.2,
             any.quickcheck-arbitrary-adt ==0.3.1.0,
             any.quickcheck-io ==0.2.0,
             any.random ==1.2.0,
-             any.recursion-schemes ==5.2.2,
+             any.recursion-schemes ==5.2.2.1,
             recursion-schemes +template-haskell,
+             any.regex-base ==0.94.0.1,
             any.regex-posix ==0.96.0.0,
             regex-posix -_regex-posix-clib,
             any.resourcet ==1.2.4.2,
-             any.rts ==1.0,
+             any.rts ==1.0.1,
             any.safe ==0.3.19,
-             any.safe-exceptions ==0.1.7.1,
-             any.scientific ==0.3.6.2,
+             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,
@@ -188,36 +191,31 @@ constraints: any.Cabal ==3.2.1.0,
             any.split ==0.2.3.4,
             any.splitmix ==0.1.0.3,
             splitmix -optimised-mixer,
-             any.stm ==2.5.0.0,
+             any.stm ==2.5.0.1,
             any.stm-chans ==3.0.0.4,
             any.streaming-commons ==0.2.2.1,
             streaming-commons -use-bytestring-builder,
-             any.streamly ==0.7.3,
-             streamly -debug -dev -examples -examples-sdl -fusion-plugin -has-llvm -inspection -no-fusion -streamk,
-             any.streamly-bytestring ==0.1.2,
-             any.streamly-posix ==0.1.0.1,
             any.strict ==0.4.0.1,
             strict +assoc,
             any.strict-base ==0.4.0.0,
-             any.string-interpolate ==0.3.1.0,
+             any.string-interpolate ==0.3.1.1,
             string-interpolate -bytestring-builder -extended-benchmarks -text-builder,
             any.syb ==0.7.2.1,
             any.tagged ==0.8.6.1,
             tagged +deepseq +transformers,
-             any.tasty ==1.3.1,
-             tasty +clock,
-             any.tasty-hunit ==0.10.0.3,
-             any.tasty-quickcheck ==0.10.1.2,
+             any.tar ==0.6.0.0,
             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-conversions ==0.3.1,
-             any.text-short ==0.1.3,
-             text-short -asserts,
+             any.text-zipper ==0.11,
             any.tf-random ==0.5,
             any.th-abstraction ==0.4.2.0,
-             any.th-compat ==0.1.1,
+             any.th-compat ==0.1.2,
+             any.th-expand-syns ==0.4.8.0,
             any.th-lift ==0.8.2,
             any.th-lift-instances ==0.1.18,
             any.th-orphans ==0.13.11,
@@ -225,7 +223,7 @@ constraints: any.Cabal ==3.2.1.0,
             any.these ==1.1.1.1,
             these +assoc,
             any.time ==1.9.3,
-             any.time-compat ==1.9.5,
+             any.time-compat ==1.9.6,
             time-compat -old-locale,
             any.transformers ==0.5.6.2,
             any.transformers-base ==0.4.5.2,
@@ -233,29 +231,34 @@ constraints: any.Cabal ==3.2.1.0,
             any.transformers-compat ==0.6.6,
             transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
             any.typed-process ==0.2.6.0,
-             any.unbounded-delays ==0.1.1.1,
             any.unix ==2.7.2.2,
             any.unix-bytestring ==0.3.7.3,
             any.unix-compat ==0.5.3,
             unix-compat -old-time,
             any.unix-time ==0.4.7,
             any.unliftio-core ==0.2.0.1,
-             any.unordered-containers ==0.2.13.0,
+             any.unordered-containers ==0.2.14.0,
             unordered-containers -debug,
-             any.uri-bytestring ==0.3.3.0,
+             any.uri-bytestring ==0.3.3.1,
             uri-bytestring -lib-werror,
             any.utf8-string ==1.0.2,
-             any.uuid-types ==1.0.4,
-             any.vector ==0.12.2.0,
+             any.uuid-types ==1.0.5,
+             any.vector ==0.12.3.0,
             vector +boundschecks -internalchecks -unsafechecks -wall,
             any.vector-algorithms ==0.8.0.4,
             vector-algorithms +bench +boundschecks -internalchecks -llvm +properties -unsafechecks,
-             any.versions ==4.0.3,
+             any.versions ==5.0.0,
             any.vty ==5.33,
-             any.wcwidth ==0.0.2,
-             wcwidth -cli +split-base,
+             any.word-wrap ==0.4.1,
             any.word8 ==0.1.3,
+             any.xor ==0.0.1.0,
             any.yaml ==0.11.5.0,
             yaml +no-examples +no-exe,
-             zlib -non-blocking-ffi -pkg-config -static
-index-state: hackage.haskell.org 2021-03-07T18:36:25Z
+             any.zip ==1.7.1,
+             zip -dev -disable-bzip2 -disable-zstd,
+             any.zlib ==0.6.2.3,
+             zlib -bundled-c-zlib -non-blocking-ffi -pkg-config,
+             any.zlib-bindings ==0.1.1.5,
+             any.zstd ==0.1.2.0,
+             zstd +standalone
+index-state: hackage.haskell.org 2021-07-12T18:00:24Z
--- a/cabal.ghc884.project
+++ b/cabal.ghc884.project
@@ -1,20 +0,0 @@
-packages: ./ghcup.cabal
-
-with-compiler: ghc-8.8.4
-
-optional-packages: ./3rdparty/*/*.cabal
-
-optimization: 2
-
-package streamly
-    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
-
-package ghcup
-    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16
-
-constraints: http-io-streams -brotli
-
-package libarchive
-  flags: -system-libarchive
-
-allow-newer: base, ghc-prim, template-haskell
--- a/cabal.ghc901.project
+++ b/cabal.ghc901.project
@@ -0,0 +1,28 @@
+packages: ./ghcup.cabal
+
+optional-packages: ./vendored/*/*.cabal
+
+optimization: 2
+
+package ghcup
+    tests: True
+    flags: +tui
+
+source-repository-package
+    type: git
+    location: https://github.com/Bodigrim/tar
+    tag: ac197ec7ea4838dc2b4e22b9b888b080cedf29cf
+
+source-repository-package
+    type: git
+    location: https://github.com/bgamari/terminal-size
+    tag: 34ea816bd63f75f800eedac12c6908c6f3736036
+
+constraints: http-io-streams -brotli
+
+package libarchive
+  flags: -system-libarchive
+
+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
@@ -1,12 +1,11 @@
 active-repositories: hackage.haskell.org:merge
-constraints: any.Cabal ==3.0.1.0,
+constraints: any.Cabal ==3.4.0.0,
             any.HUnit ==1.6.2.0,
-             any.IfElse ==0.85,
+             any.HsOpenSSL ==0.11.7,
+             HsOpenSSL -fast-bignum -homebrew-openssl -macports-openssl -use-pkg-config,
             any.QuickCheck ==2.14.2,
             QuickCheck -old-random +templatehaskell,
             any.StateVar ==1.2.1,
-             any.abstract-deque ==0.3,
-             abstract-deque -usecas,
             any.aeson ==1.5.6.0,
             aeson -bytestring-builder -cffi -developer -fast,
             any.aeson-pretty ==0.8.8,
@@ -18,31 +17,32 @@ constraints: any.Cabal ==3.0.1.0,
             any.ansi-wl-pprint ==0.6.9,
             ansi-wl-pprint -example,
             any.array ==0.5.4.0,
-             any.ascii-string ==1.0.1.4,
             any.assoc ==1.0.2,
             any.async ==2.2.3,
             async -bench,
-             any.atomic-primops ==0.8.4,
-             atomic-primops -debug,
             any.attoparsec ==0.13.2.5,
             attoparsec -developer,
             any.auto-update ==0.1.6,
-             any.base ==4.13.0.0,
+             any.base ==4.15.0.0,
             any.base-compat ==0.11.2,
             any.base-compat-batteries ==0.11.2,
             any.base-orphans ==0.8.4,
             any.base16-bytestring ==1.0.1.0,
-             any.base64-bytestring ==1.2.0.1,
-             any.bifunctors ==5.5.10,
+             any.base64-bytestring ==1.1.0.0,
+             any.bifunctors ==5.5.11,
             bifunctors +semigroups +tagged,
-             any.binary ==0.8.7.0,
+             any.binary ==0.8.8.0,
+             any.bindings-DSL ==1.0.25,
             any.blaze-builder ==0.4.2.1,
-             any.bytestring ==0.10.10.1,
+             any.brick ==0.61,
+             brick -demos,
+             any.bytestring ==0.10.12.1,
             any.bz2 ==1.0.1.0,
             bz2 -cross +with-bzlib,
-             any.c2hs ==0.28.7,
+             any.bzlib-conduit ==0.3.0.2,
+             any.c2hs ==0.28.8,
             c2hs +base3 -regression,
-             any.call-stack ==0.3.0,
+             any.call-stack ==0.4.0,
             any.case-insensitive ==1.2.1.0,
             any.casing ==0.1.4.1,
             any.cereal ==0.5.8.1,
@@ -54,7 +54,7 @@ constraints: any.Cabal ==3.0.1.0,
             clock -llvm,
             any.cmdargs ==0.10.21,
             cmdargs +quotation -testprog,
-             any.colour ==2.3.5,
+             any.colour ==2.3.6,
             any.comonad ==5.0.8,
             comonad +containers +distributive +indexed-traversable,
             any.composition-prelude ==3.0.0.2,
@@ -62,16 +62,25 @@ constraints: any.Cabal ==3.0.1.0,
             any.concurrent-output ==1.10.12,
             any.conduit ==1.3.4.1,
             any.conduit-extra ==1.3.5,
-             any.containers ==0.6.2.1,
+             any.conduit-zstd ==0.0.2.0,
+             any.config-ini ==0.2.4.0,
+             config-ini -enable-doctests,
+             any.containers ==0.6.4.1,
             any.contravariant ==1.5.3,
             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-default-class ==0.1.2.0,
             any.data-fix ==0.3.1,
-             any.deepseq ==1.4.4.0,
-             any.deferred-folds ==0.9.17,
-             any.directory ==1.3.6.0,
+             any.deepseq ==1.4.5.0,
+             any.digest ==0.0.1.3,
+             digest -bytestring-in-base,
+             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,
@@ -79,63 +88,55 @@ constraints: any.Cabal ==3.0.1.0,
             any.easy-file ==0.2.2,
             any.errors ==2.3.0,
             any.exceptions ==0.10.4,
-             exceptions +transformers-0-4,
-             any.fast-logger ==3.0.3,
+             any.extra ==1.7.9,
+             any.fast-logger ==3.0.5,
             any.filepath ==1.4.2.1,
-             any.focus ==1.0.2,
-             any.foldl ==1.4.11,
-             any.free ==5.1.6,
-             any.fusion-plugin-types ==0.1.0,
+             any.free ==5.1.7,
             any.generic-arbitrary ==0.1.0,
             any.generics-sop ==0.5.1.1,
-             any.ghc-boot-th ==8.8.4,
-             any.ghc-prim ==0.5.3,
-             ghcup -internal-downloader -tar -tui,
+             any.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 ==1.3.1.0,
-             hashable +integer-gmp,
+             any.hashable ==1.3.2.0,
+             hashable +integer-gmp -random-initial-seed,
             any.haskell-src-exts ==1.23.1,
             any.haskell-src-meta ==0.8.7,
             any.haskus-utils-data ==1.4,
             any.haskus-utils-types ==1.5.1,
             any.haskus-utils-variant ==3.1,
-             any.heaps ==0.3.6.1,
-             any.hpath ==0.11.0,
-             any.hpath-directory ==0.14.1,
             any.hpath-filepath ==0.10.4,
-             any.hpath-io ==0.14.1,
-             any.hpath-posix ==0.13.2,
+             any.hpath-posix ==0.13.3,
             any.hsc2hs ==0.68.7,
             hsc2hs -in-ghc-tree,
-             any.hspec ==2.7.8,
-             any.hspec-core ==2.7.8,
-             any.hspec-discover ==2.7.8,
+             any.hspec ==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 ==0.7.0.0,
-             any.indexed-profunctors ==0.1,
+             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 ==1.0.2.0,
             any.integer-logarithms ==1.0.3.1,
             integer-logarithms -check-bounds +integer-gmp,
-             any.language-c ==0.8.3,
-             language-c -allwarnings +iecfpextension +separatesyb +usebytestrings,
-             any.libarchive ==3.0.2.1,
+             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 ==3.0.2.2,
             libarchive -cross -low-memory -system-libarchive,
             any.libyaml ==0.1.2,
             libyaml -no-unicode -system-libyaml,
             any.lifted-base ==0.2.3.12,
-             any.list-t ==1.0.4,
-             any.lockfree-queue ==0.2.3.1,
-             lzma -static,
-             any.math-functions ==0.3.4.1,
-             math-functions +system-erf +system-expm1,
+             any.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 ==0.4.3.9,
-             any.mmorph ==1.1.5,
+             any.microlens-th ==0.4.3.10,
             any.monad-control ==1.0.2.3,
             any.monad-logger ==0.3.36,
             monad-logger +template_haskell,
@@ -143,11 +144,12 @@ constraints: any.Cabal ==3.0.1.0,
             monad-loops +base4,
             any.mono-traversable ==1.0.15.1,
             any.mtl ==2.2.2,
-             any.mwc-random ==0.15.0.1,
-             any.network ==3.1.2.1,
+             any.network ==3.1.2.2,
             network -devel,
+             any.network-uri ==2.6.4.1,
             any.old-locale ==1.0.0.7,
             any.old-time ==1.1.0.3,
+             any.openssl-streams ==1.2.3.0,
             any.optics ==0.4,
             any.optics-core ==0.4,
             optics-core -explicit-generic-labels,
@@ -162,25 +164,25 @@ constraints: any.Cabal ==3.0.1.0,
             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 ==0.7.1.0,
-             any.primitive-extras ==0.8.2,
-             any.primitive-unlifted ==0.1.3.0,
-             any.process ==1.6.9.0,
+             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 ==1.2.0,
-             any.recursion-schemes ==5.2.2,
+             any.recursion-schemes ==5.2.2.1,
             recursion-schemes +template-haskell,
+             any.regex-base ==0.94.0.1,
             any.regex-posix ==0.96.0.0,
             regex-posix -_regex-posix-clib,
             any.resourcet ==1.2.4.2,
             any.rts ==1.0,
             any.safe ==0.3.19,
-             any.safe-exceptions ==0.1.7.1,
-             any.scientific ==0.3.6.2,
+             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,
@@ -193,32 +195,27 @@ constraints: any.Cabal ==3.0.1.0,
             any.stm-chans ==3.0.0.4,
             any.streaming-commons ==0.2.2.1,
             streaming-commons -use-bytestring-builder,
-             any.streamly ==0.7.3,
-             streamly -debug -dev -examples -examples-sdl -fusion-plugin -has-llvm -inspection -no-fusion -streamk,
-             any.streamly-bytestring ==0.1.2,
-             any.streamly-posix ==0.1.0.1,
             any.strict ==0.4.0.1,
             strict +assoc,
             any.strict-base ==0.4.0.0,
-             any.string-interpolate ==0.3.1.0,
+             any.string-interpolate ==0.3.1.1,
             string-interpolate -bytestring-builder -extended-benchmarks -text-builder,
             any.syb ==0.7.2.1,
             any.tagged ==0.8.6.1,
             tagged +deepseq +transformers,
-             any.tasty ==1.3.1,
-             tasty +clock,
-             any.tasty-hunit ==0.10.0.3,
-             any.tasty-quickcheck ==0.10.1.2,
-             any.template-haskell ==2.15.0.0,
+             any.tar ==0.6.0.0,
+             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 ==1.2.4.0,
+             any.text ==1.2.4.1,
             any.text-conversions ==0.3.1,
-             any.text-short ==0.1.3,
-             text-short -asserts,
+             any.text-zipper ==0.11,
             any.tf-random ==0.5,
             any.th-abstraction ==0.4.2.0,
-             any.th-compat ==0.1.1,
+             any.th-compat ==0.1.2,
+             any.th-expand-syns ==0.4.8.0,
             any.th-lift ==0.8.2,
             any.th-lift-instances ==0.1.18,
             any.th-orphans ==0.13.11,
@@ -226,7 +223,7 @@ constraints: any.Cabal ==3.0.1.0,
             any.these ==1.1.1.1,
             these +assoc,
             any.time ==1.9.3,
-             any.time-compat ==1.9.5,
+             any.time-compat ==1.9.6,
             time-compat -old-locale,
             any.transformers ==0.5.6.2,
             any.transformers-base ==0.4.5.2,
@@ -234,29 +231,34 @@ constraints: any.Cabal ==3.0.1.0,
             any.transformers-compat ==0.6.6,
             transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
             any.typed-process ==0.2.6.0,
-             any.unbounded-delays ==0.1.1.1,
             any.unix ==2.7.2.2,
             any.unix-bytestring ==0.3.7.3,
             any.unix-compat ==0.5.3,
             unix-compat -old-time,
             any.unix-time ==0.4.7,
             any.unliftio-core ==0.2.0.1,
-             any.unordered-containers ==0.2.13.0,
+             any.unordered-containers ==0.2.14.0,
             unordered-containers -debug,
-             any.uri-bytestring ==0.3.3.0,
+             any.uri-bytestring ==0.3.3.1,
             uri-bytestring -lib-werror,
             any.utf8-string ==1.0.2,
-             any.uuid-types ==1.0.4,
-             any.vector ==0.12.2.0,
+             any.uuid-types ==1.0.5,
+             any.vector ==0.12.3.0,
             vector +boundschecks -internalchecks -unsafechecks -wall,
             any.vector-algorithms ==0.8.0.4,
             vector-algorithms +bench +boundschecks -internalchecks -llvm +properties -unsafechecks,
-             any.versions ==4.0.3,
+             any.versions ==5.0.0,
             any.vty ==5.33,
-             any.wcwidth ==0.0.2,
-             wcwidth -cli +split-base,
+             any.word-wrap ==0.4.1,
             any.word8 ==0.1.3,
+             any.xor ==0.0.1.0,
             any.yaml ==0.11.5.0,
             yaml +no-examples +no-exe,
-             zlib -non-blocking-ffi -pkg-config -static
-index-state: hackage.haskell.org 2021-03-07T18:36:25Z
+             any.zip ==1.7.1,
+             zip -dev -disable-bzip2 -disable-zstd,
+             any.zlib ==0.6.2.3,
+             zlib -bundled-c-zlib -non-blocking-ffi -pkg-config,
+             any.zlib-bindings ==0.1.1.5,
+             any.zstd ==0.1.2.0,
+             zstd +standalone
+index-state: hackage.haskell.org 2021-07-12T18:00:24Z
--- a/cabal.project
+++ b/cabal.project
@@ -1,12 +1,10 @@
 packages: ./ghcup.cabal

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

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

@@ -15,9 +13,14 @@ source-repository-package
    location: https://github.com/Bodigrim/tar
    tag: ac197ec7ea4838dc2b4e22b9b888b080cedf29cf

+source-repository-package
+    type: git
+    location: https://github.com/bgamari/terminal-size
+    tag: 34ea816bd63f75f800eedac12c6908c6f3736036
+
 constraints: http-io-streams -brotli

 package libarchive
  flags: -system-libarchive

-allow-newer: base, ghc-prim, template-haskell
+allow-newer: base, ghc-prim, template-haskell, language-c
--- a/cabal.project.freeze
+++ b/cabal.project.freeze
@@ -0,0 +1,2 @@
+-- windows picks weird version
+constraints: any.hsc2hs ==0.68.7
--- a/ghcup-0.0.4.yaml
+++ b/ghcup-0.0.4.yaml
@@ -170,11 +170,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/7.10.3/ghc-7.10.3-x86_64-portbld-freebsd.tar.bz2
              dlSubdir: ghc-7.10.3
              dlHash: 2aa396edd2bb651f4bc7eef7a396913ea24923de5aafdc76df6295333e487e48
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/7.10.3/ghc-7.10.3-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-7.10.3
-              dlHash: 63e1689fc9e2809ae4d7f422b4dc810052e54c9aa2afd08746e234180e711dde
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-7103-32-deb8
@@ -241,11 +236,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-8.0.2
              dlHash: b36a20e5cae24d70bbb6116ae486f21811e9384f15d3892d260f02fba3e3bb8c
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.0.2
-              dlHash: 8c42c1f4af995205b9816a1e97e2752fe758544c1f5fe77958cdcd319c9c2d53
        A_32:
          Linux_Debian:
            '( >= 7 && < 8 )':
@@ -310,11 +300,6 @@ ghcupDownloads:
              dlSubdir: ghc-8.2.2
              dlHash: cd351c704b92b9af23994024df07de8ca7090ea7675d5c8b14b2be857a46d804
            unknown_versioning: *ghc-822-64-fbsd11
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.2.2
-              dlHash: 1e033df2092aa546e763e7be63167720b32df64f76673ea1ce7ae7c9f564b223
        A_32:
          Linux_Debian:
            '( >= 7 && < 8 )':
@@ -374,11 +359,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-x86_64-portbld11-freebsd.tar.xz
              dlSubdir: ghc-8.4.1
              dlHash: e748daec098445c6190090fe32bb2817a1140553be5acd2188e1af05ad24e5aa
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.4.1
-              dlHash: 328b013fc651d34e075019107e58bb6c8a578f0155cf3ad4557e6f2661b03131
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-841-32-deb8
@@ -434,11 +414,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-8.4.2
              dlHash: e9ed417fdf94c2ff2c6e344ed16f332bf6b591511f6442c0d9ea94854882b66c
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.4.2
-              dlHash: 797634aa9812fc6b2084a24ddb4fde44fa83a2f59daea82e0af81ca3dd323fde
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-842-32-deb8
@@ -489,11 +464,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-x86_64-apple-darwin.tar.xz
              dlSubdir: ghc-8.4.3
              dlHash: af0b455f6c46b9802b4b48dad996619cfa27cc6e2bf2ce5532387b4a8c00aa64
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.4.3
-              dlHash: 8a83cfbf9ae84de0443c39c93b931693bdf2a6d4bf163ffb41855f80f4bf883e
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-843-32-deb8
@@ -562,11 +532,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-portbld-freebsd11.tar.xz
              dlSubdir: ghc-8.4.4
              dlHash: 44fbd142d1c355d6110595c59c760e2c73866ff9259ec85ebf814edb244d1940
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.4.4
-              dlHash: da29dbb0f1199611c7d5bb7b0dd6a7426ca98f67dfd6da1526b033cd3830dc05
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-844-32-deb8
@@ -627,11 +592,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-8.6.1
              dlHash: 51403b054a3a649039ac988e1d1112561f96750bfced63df864091a3fab36f08
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.6.1
-              dlHash: 7316d9cb5e486460476754f872c7bac30ee2082e42f46da4342f872d10b88099
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-861-32-deb8
@@ -678,11 +638,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-x86_64-apple-darwin.tar.xz
              dlSubdir: ghc-8.6.2
              dlHash: 8ec46a25872226dd7e5cf7271e3f3450c05f32144b96e6b9cb44cc4079db50dc
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.6.2
-              dlHash: 9a398e133cab09ff2610834337355d4e26c35e0665403fb9ff8db79315f74d3d
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-862-32-deb8
@@ -747,11 +702,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-8.6.3
              dlHash: bc2419fa180f8a7808c49775987866435995df9bdd9ce08bcd38352d63ba6031
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.6.3
-              dlHash: 2fec383904e5fa79413e9afd328faf9bc700006c8c3d4bcdd8d4f2ccf0f7fa2a
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-863-32-deb8
@@ -802,11 +752,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.6.4/ghc-8.6.4-x86_64-apple-darwin.tar.xz
              dlSubdir: ghc-8.6.4
              dlHash: cccb58f142fe41b601d73690809f6089f7715b6a50a09aa3d0104176ab4db09e
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.6.4/ghc-8.6.4-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.6.4
-              dlHash: e8d021b7a90772fc559862079da20538498d991956d7557b468ca19ddda22a08
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-864-32-deb9
@@ -875,11 +820,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/ghc/8.6.5/ghc-8.6.5-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-8.6.5
              dlHash: 83a3059a630d40a98e26cb5b520354e12094a96e36ba2f5ab002dad94cf2fb37
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.6.5
-              dlHash: 457024c6ea43bdce340af428d86319931f267089398b859b00efdfe2fd4ce93f
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-865-32-deb9
@@ -950,11 +890,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-x86_64-apple-darwin.tar.xz
              dlSubdir: ghc-8.8.1
              dlHash: 38c8917b47c31bedf58c9305dfca3abe198d8d35570366f0773c4e2948bd8abe
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.8.1
-              dlHash: 29e56e6af38017a5a76b2b6995a39d3988fa58131e4b55b62dd317ba7186ac9b
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-881-32-deb9
@@ -1014,11 +949,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-x86_64-apple-darwin.tar.xz
              dlSubdir: ghc-8.8.2
              dlHash: 25c5c1a70036abf3f22b2b19c10d26adfdb08e8f8574f89d4b2042de5947f990
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.8.2
-              dlHash: e25d9b16ee62cafc7387af2cd021eea676a99cd2c32b83533b016162c63065d9
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-882-32-deb9
@@ -1083,11 +1013,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/ghc/8.8.3/ghc-8.8.3-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-8.8.3
              dlHash: 569719075b4d14b3875a899df522090ae31e6fe085e6dffe518e875b09a2f0be
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.8.3
-              dlHash: e22586762af0911c06e8140f1792e3ca381a3a482a20d67b9054883038b3a422
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-883-32-deb9
@@ -1162,11 +1087,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/ghc/8.8.4/ghc-8.8.4-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-8.8.4
              dlHash: 8cebe5ccf454e82acd1ff52ca57590d1ab0f3f44a981b46257ec12158c8c447e
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.8.4/ghc-8.8.4-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.8.4
-              dlHash: d185055d2c8dc3bfe5b88afd59d6877eb1e722b672d1c9649f18296e148ed71f
        A_32:
          Linux_Debian:
            unknown_versioning: &ghc-884-32-deb9
@@ -1244,11 +1164,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/ghc/8.10.1/ghc-8.10.1-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-8.10.1
              dlHash: e8646ec9b60fd40aa9505ee055f22f04601290ab7a1342c2cf37c34de9d3f142
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.10.1
-              dlHash: 38a3166ea50cccd5bae7e1680eae3aae2b4ae31b61f82a1d8168fb821f43bd67
        A_32:
          Linux_Debian:
            '( >= 9 && < 10 )': &ghc-8101-32-deb9
@@ -1339,11 +1254,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-unknown-freebsd.tar.xz
              dlSubdir: ghc-8.10.2
              dlHash: 9e5957f3497f4b58ecd3699568d9caaa11a47a6d7e902032c261e450fa0f6686
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.10.2
-              dlHash: dcae4c173b9896e07ff048de5509aa0a4537233150e06e5ce8848303dfadc176
        A_32:
          Linux_Debian:
            '( >= 9 && < 10 )': &ghc-8102-32-deb9
@@ -1376,6 +1286,7 @@ ghcupDownloads:
              dlHash: bb9c97826b1f4d7a8ef8bce0616b612f1ded10480ef10fcf7fb4e6d10a6681c8
    8.10.3:
      viTags:
+      - old
      - base-4.14.1.0
      viChangeLog: https://downloads.haskell.org/~ghc/8.10.3/docs/html/users_guide/8.10.3-notes.html
      viSourceDL:
@@ -1433,11 +1344,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-8.10.3
              dlHash: 749007e995104db05cf6e3ad5bc36238cab8afac8055145661e5730e8f8af040
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.10.3
-              dlHash: 927a6c699533a115cd49772ef2c753d9af2c13bf9f0b2d3bd13645cc6a144ee3
        A_32:
          Linux_Debian:
            '( >= 9 && < 10 )': &ghc-8103-32-deb9
@@ -1470,7 +1376,6 @@ ghcupDownloads:
              dlHash: b823b58cae36fbac0741680ca7605180fa4cf4c6ae439123d282184b94d32fd6
    8.10.4:
      viTags:
-      - Recommended
      - base-4.14.1.0
      viChangeLog: https://downloads.haskell.org/~ghc/8.10.4/docs/html/users_guide/8.10.4-notes.html
      viSourceDL:
@@ -1478,7 +1383,7 @@ ghcupDownloads:
        dlSubdir: ghc-8.10.4
        dlHash: 52af871b4e08550257d720c2944ac85727d0b948407cef1bebfe7508c224910e
      viPostRemove: *ghc-post-remove
-      viPreCompile: "If you have autoconf >= 2.70 you'll need this patch https://gitlab.haskell.org/ghc/ghc/-/snippets/2040 (see the --patchdir option)"
+      viPreCompile: &ghc-pre-compile "If you have autoconf >= 2.70 you'll need this patch https://gitlab.haskell.org/ghc/ghc/-/snippets/2040 (see the --patchdir option)"
      viArch:
        A_64:
          Linux_Debian:
@@ -1529,11 +1434,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.10.4/ghc-8.10.4-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-8.10.4
              dlHash: c9776a2ccf9629b03e967206a507fcdcb6c5189800a626e9461ababf6733c357
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/8.10.4/ghc-8.10.4-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-8.10.4
-              dlHash: e9175a276504c3390a5e0084954e6997d56078737dbe7158049518892cf6bfb2
        A_32:
          Linux_Debian:
            '( >= 9 && < 10 )': &ghc-8104-32-deb9
@@ -1564,6 +1464,97 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/8.10.4/ghc-8.10.4-armv7-deb10-linux.tar.xz
              dlSubdir: ghc-8.10.4
              dlHash: 0d18ef83593272f6196a41cc3abdc48dfe5e14372db75d71ea19fe35320c4e81
+    8.10.5:
+      viTags:
+      - Recommended
+      - base-4.14.2.0
+      viChangeLog: https://downloads.haskell.org/~ghc/8.10.5/docs/html/users_guide/8.10.5-notes.html
+      viSourceDL:
+        dlUri: https://downloads.haskell.org/~ghc/8.10.5/ghc-8.10.5-src.tar.xz
+        dlSubdir: ghc-8.10.5
+        dlHash: f10941f16e4fbd98580ab5241b9271bb0851304560c4d5ca127e3b0e20e3076f
+      viPostRemove: *ghc-post-remove
+      viPreCompile: *ghc-pre-compile
+      viArch:
+        A_64:
+          Linux_Debian:
+            '( >= 9 && < 10 )': &ghc-8105-64-deb9
+              dlUri: https://downloads.haskell.org/~ghc/8.10.5/ghc-8.10.5-x86_64-deb9-linux.tar.xz
+              dlSubdir: ghc-8.10.5
+              dlHash: 15e71325c3bdfe3804be0f84c2fc5c913d811322d19b0f4d4cff20f29cdd804d
+            '( >= 10 && < 11 )': &ghc-8105-64-deb10
+              dlUri: https://downloads.haskell.org/~ghc/8.10.5/ghc-8.10.5-x86_64-deb10-linux.tar.xz
+              dlSubdir: ghc-8.10.5
+              dlHash: bc623c20ca4c5c18e952071ba14aa0cfc5c94d34219bffaa615f7b491f376787
+            unknown_versioning: *ghc-8105-64-deb9
+          Linux_Ubuntu:
+            unknown_versioning: &ghc-8105-64-fedora
+              dlUri: https://downloads.haskell.org/~ghc/8.10.5/ghc-8.10.5-x86_64-fedora27-linux.tar.xz
+              dlSubdir: ghc-8.10.5
+              dlHash: 73528ebfb219b50aa9042ee51a0a2bd764828d605f058404989d0b645752d210
+            '( >= 16 && < 19 )': *ghc-8105-64-deb9
+          Linux_Mint:
+            unknown_versioning: *ghc-8105-64-deb10
+          Linux_Fedora:
+            '( >= 27 && < 28 )': *ghc-8105-64-fedora
+            unknown_versioning: *ghc-8105-64-fedora
+          Linux_CentOS:
+            '( >= 7 && < 8 )': &ghc-8105-64-centos
+              dlUri: https://downloads.haskell.org/~ghc/8.10.5/ghc-8.10.5-x86_64-centos7-linux.tar.xz
+              dlSubdir: ghc-8.10.5
+              dlHash: 4cdb259ec74d1408dab45dab20dcedc21690f39921c2ea4546486fb3e81f4fbd
+            unknown_versioning: *ghc-8105-64-centos
+          Linux_RedHat:
+            unknown_versioning: *ghc-8105-64-centos
+          Linux_Alpine:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.5/ghc-8.10.5-x86_64-alpine3.10-linux-integer-simple.tar.xz
+              dlSubdir: ghc-8.10.5-x86_64-unknown-linux
+              dlHash: f4d7cd9ed12a4b8592219c9a63a86db1a256a09fa9e6ed755a60afc57dc782e2
+          Linux_AmazonLinux:
+            unknown_versioning: *ghc-8105-64-centos
+          Linux_UnknownLinux:
+            unknown_versioning: *ghc-8105-64-fedora
+          Darwin:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.5/ghc-8.10.5-x86_64-apple-darwin.tar.xz
+              dlSubdir: ghc-8.10.5
+              dlHash: ef0f47eff8962d58fa447123636cf8ef31c1e5b2d0ae90177d3388861ddf4a22
+          FreeBSD:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghcup/unofficial-bindists/ghc/8.10.5/ghc-8.10.5-x86_64-portbld-freebsd.tar.xz
+              dlSubdir: ghc-8.10.5
+              dlHash: 11a0b490bfb2f57b5bc87c69c197542eafce1b4991cc22f625179a6c6e567834
+        A_32:
+          Linux_Debian:
+            '( >= 9 && < 10 )': &ghc-8105-32-deb9
+              dlUri: https://downloads.haskell.org/~ghc/8.10.5/ghc-8.10.5-i386-deb9-linux.tar.xz
+              dlSubdir: ghc-8.10.5
+              dlHash: 0ccb5b2c1222374874795c35410754dd650f649b774872abbea2a4ef21ac9c9d
+            unknown_versioning: *ghc-8105-32-deb9
+          Linux_Ubuntu:
+            unknown_versioning: *ghc-8105-32-deb9
+          Linux_Mint:
+            unknown_versioning: *ghc-8105-32-deb9
+          Linux_UnknownLinux:
+            unknown_versioning: *ghc-8105-32-deb9
+          Linux_Alpine:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghcup/unofficial-bindists/ghc/8.10.5/ghc-8.10.5-i386-alpine-linux.tar.xz
+              dlSubdir: ghc-8.10.5
+              dlHash: 0e91abe61607f9375d4e252ee9c261e4856df396f60641bb1b880ab8a3a83ea7
+        A_ARM64:
+          Linux_UnknownLinux:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.5/ghc-8.10.5-aarch64-deb10-linux.tar.xz
+              dlSubdir: ghc-8.10.5
+              dlHash: 9a085cd8a7f8e0ace21ac67dbf659a56fcf41564b48817ba42cd8a1aac7f0ddc
+        A_ARM:
+          Linux_UnknownLinux:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghc/8.10.5/ghc-8.10.5-armv7-deb10-linux.tar.xz
+              dlSubdir: ghc-8.10.5
+              dlHash: 56170d1a8450e18b7eb9c23c94723da352815b27ec250bb23742a62f16dcab6c
    9.0.1:
      viTags:
      - Latest
@@ -1624,11 +1615,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/9.0.1/ghc-9.0.1-x86_64-portbld-freebsd.tar.xz
              dlSubdir: ghc-9.0.1
              dlHash: 9dbc06d8832cae5c9f86dd7b2db729b3748a47beb4fd4b1e62bb66119817c3c1
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/9.0.1/ghc-9.0.1-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-9.0.1-x86_64-unknown-mingw32
-              dlHash: 4f4ab118df01cbc7e7c510096deca0cb25025339a97730de0466416296202493
        A_32:
          Linux_Debian:
            '( >= 9 && < 10 )': &ghc-901-32-deb9
@@ -1719,11 +1705,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghc/9.2.1-alpha2/ghc-9.2.0.20210422-x86_64-apple-darwin.tar.xz
              dlSubdir: ghc-9.2.0.20210422
              dlHash: 8884c059f2b76e4c4309ff6bd7a7dde37663f751fd26220e9a2bcabb4d69a401
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghc/9.2.1-alpha2/ghc-9.2.0.20210422-x86_64-unknown-mingw32.tar.xz
-              dlSubdir: ghc-9.0.1-x86_64-unknown-mingw32
-              dlHash: 33f173b754d18f26bb27f52bb77a92fd22a48675daa2b43a1879bf01dddd7e8f
        A_32:
          Linux_Debian:
            '( >= 9 && < 10 )': &ghc-921-alpha2-32-deb9
@@ -1776,11 +1757,6 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~cabal/cabal-install-2.4.1.0/cabal-install-2.4.1.0-x86_64-portbld-freebsd.tar.xz
              dlSubdir:
              dlHash: 33b7d37ea0688c93436eac9ec139d9967687875aa1fa13f2bb73bf05a9a59a1d
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~cabal/cabal-install-2.4.1.0/cabal-install-2.4.1.0-x86_64-unknown-mingw32.zip
-              dlSubdir:
-              dlHash: 95f233efedb1ebf0e6db015fa2f55c1ed00b9938d207ec63c066f706fb4b6373
        A_32:
          Linux_UnknownLinux:
            unknown_versioning:
@@ -1809,11 +1785,6 @@ ghcupDownloads:
            unknown_versioning:
              dlUri: https://downloads.haskell.org/~cabal/cabal-install-3.0.0.0/cabal-install-3.0.0.0-x86_64-portbld-freebsd.tar.xz
              dlHash: 2240842ab2ae7b955feb8b526aba1c7991248c803383107adf39990441294d2a
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~cabal/cabal-install-3.0.0.0/cabal-install-3.0.0.0-x86_64-unknown-mingw32.zip
-              dlSubdir:
-              dlHash: 8889963ebef5e829d86329fdb59832c107efd117cf7862a605f2fe2d2360de1f
        A_32:
          Linux_Alpine:
            unknown_versioning:
@@ -1845,11 +1816,6 @@ ghcupDownloads:
            unknown_versioning:
              dlUri: https://downloads.haskell.org/~cabal/cabal-install-3.2.0.0/cabal-install-3.2.0.0-x86_64-portbld-freebsd.tar.xz
              dlHash: f1e35151cca91541b0fb4bdb3ed18f3c348038eab751845ad19c11307d66c273
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~cabal/cabal-install-3.2.0.0/cabal-install-3.2.0.0-x86_64-unknown-mingw32.zip
-              dlSubdir:
-              dlHash: 17778c3ade0482bc37f451eec326f8fce8fbe1f12b1d6aacb2e2b9e34786c054
        A_32:
          Linux_Alpine:
            unknown_versioning:
@@ -1884,11 +1850,6 @@ ghcupDownloads:
            unknown_versioning:
              dlUri: https://downloads.haskell.org/~cabal/cabal-install-3.4.0.0/cabal-install-3.4.0.0-x86_64-freebsd-12.1-release.tar.xz
              dlHash: a1e2db664ec00e42a1e071a4181f6476f6e0bad321f1ddc0cf27831119f4c6d4
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~cabal/cabal-install-3.4.0.0/cabal-install-3.4.0.0-x86_64-windows.zip
-              dlSubdir:
-              dlHash: 860fff2d39a82d1dc0ca924a77164d0988af49c2c5f45e15d615144122beb647
        A_32:
          Linux_UnknownLinux:
            unknown_versioning: &cabal-3400-32
@@ -1907,7 +1868,7 @@ ghcupDownloads:
              dlUri: https://downloads.haskell.org/~ghcup/unofficial-bindists/cabal/3.4.0.0/cabal-install-3.4.0.0-armv7-linux-bootstrapped.tar.xz
              dlHash: 16c0d1eaba24bed14f3e152970179a45d9f9bb5cc839b2c210ad06eb7d4826ed
  GHCup:
-    0.1.14.1:
+    0.1.15.2:
      viTags:
      - Recommended
      - Latest
@@ -1917,39 +1878,39 @@ ghcupDownloads:
        A_64:
          Linux_UnknownLinux:
            unknown_versioning: &ghcup-64
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.14.1/x86_64-linux-ghcup-0.1.14.1
-              dlHash: 59e31b2ede3ed20f79dce0f8ba0a68b6fb25e5f00ba2d7243f6a8af68d979ff5
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/x86_64-linux-ghcup-0.1.15.2
+              dlHash: 1eb1bb318a327754f42eaa2245bc81fe53be7c791160d28a186893ded3004ed7
          Darwin:
            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.14.1/x86_64-apple-darwin-ghcup-0.1.14.1
-              dlHash: 3e1dd173b3e7b5d90dcdece423c3ddd3efb4c83e964967b0fb574c9b7b2c44e1
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/x86_64-apple-darwin-ghcup-0.1.15.2
+              dlHash: c2a6436a49f19f108493954d4a3efcb27503e343dd6288c2641784d32320b1ea
          FreeBSD:
            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.14.1/x86_64-portbld-freebsd-ghcup-0.1.14.1
-              dlHash: 89a70980d77888dae8b9fd0f05e7a7920f421bc3bb5192da8e73fd4e7b4cb86f
-          Windows:
-            unknown_versioning:
-              dlUri: https://TODO
-              dlHash: 89a70980d77888dae8b9fd0f05e7a7920f421bc3bb5192da8e73fd4e7b4cb86f
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/x86_64-portbld-freebsd-ghcup-0.1.15.2
+              dlHash: 7e0c17dd78ebd9fd03e6ecea278c192bac31ca333721bde5b0ef99438b847a20
          Linux_Alpine:
            unknown_versioning: *ghcup-64
        A_32:
          Linux_UnknownLinux:
            unknown_versioning: &ghcup-32
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.14.1/i386-linux-ghcup-0.1.14.1
-              dlHash: 610aac7c3be3ba3874c07b9cae5b2ca0da9a92bf381afc2597bd2dc9c70aae0c
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/i386-linux-ghcup-0.1.15.2
+              dlHash: 3b1fe710cded0398e920ec9716089ba65226abf181741897f387e7c539a619c2
          Linux_Alpine:
            unknown_versioning: *ghcup-32
        A_ARM64:
          Linux_UnknownLinux:
            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.14.1/aarch64-linux-ghcup-0.1.14.1
-              dlHash: e9ae07b7d41ea03e6af9c1f3587f61287827c4e29478b6a5d46ea1ce5af4cee5
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/aarch64-linux-ghcup-0.1.15.2
+              dlHash: d91b7a5416f292f2cf813824eb419f76ad9976d258cee3581123cb6eb01db9a7
+          Darwin:
+            unknown_versioning:
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/aarch64-apple-darwin-ghcup-0.1.15.2
+              dlHash: 20625ba5e7488f2a6155331750ecead3815ea16b2695c20521633c1412f012cc
        A_ARM:
          Linux_UnknownLinux:
            unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.14.1/armv7-linux-ghcup-0.1.14.1
-              dlHash: 646832030efbc0a848df24c08b5eb7507bd15d1c2eb95fea6d9d03890f3662be
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/armv7-linux-ghcup-0.1.15.2
+              dlHash: 03a4af5ed895ada1dd21f4cc3f64dc9078a5bf4268313021d004c04bea7f9c2e
  HLS:
    1.1.0:
      viTags:
@@ -1967,63 +1928,5 @@ ghcupDownloads:
            unknown_versioning:
              dlUri: https://github.com/haskell/haskell-language-server/releases/download/1.1.0/haskell-language-server-macOS-1.1.0.tar.gz
              dlHash: 4e89b192e2f49637d772e974f2c17b16da067ecd5912575eaa542551de97681b
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/hls/1.1.0/haskell-language-server-Windows-1.1.0.tar.gz
-              dlHash: a1d3f451e64a041aa527a25da29e4716a2de6ae347cef4ef9312fc7611e168cc
          Linux_Alpine:
            unknown_versioning: *hls-64
-  Stack:
-    2.5.1:
-      viTags: []
-      viChangeLog: https://github.com/commercialhaskell/stack/blob/master/ChangeLog.md#v251
-      viArch:
-        A_64:
-          Linux_UnknownLinux:
-            unknown_versioning: &stack-251-64
-              dlUri: https://github.com/commercialhaskell/stack/releases/download/v2.5.1/stack-2.5.1-linux-x86_64.tar.gz
-              dlHash: c83b6c93d6541c0bce2175085a04062020f4160a86116e20f3b343b562f2d1e8
-              dlSubdir:
-                RegexDir: "stack-.*"
-          Darwin:
-            unknown_versioning:
-              dlUri: https://github.com/commercialhaskell/stack/releases/download/v2.5.1/stack-2.5.1-osx-x86_64.tar.gz
-              dlHash: f4aedfa8fbe371f77286ee97ec5c3c553842e7ae15b2952a8b8442dccba04bf0
-              dlSubdir:
-                RegexDir: "stack-.*"
-          Windows:
-            unknown_versioning:
-              dlUri: https://github.com/commercialhaskell/stack/releases/download/v2.5.1/stack-2.5.1-windows-x86_64.tar.gz
-              dlHash: 57150b422cfd42249f5e629d0eb678df6d95dabe486ced57e8298d300b940d41
-              dlSubdir:
-                RegexDir: "stack-.*"
-          Linux_Alpine:
-            unknown_versioning: *stack-251-64
-    2.7.1:
-      viTags:
-        - Recommended
-        - Latest
-      viChangeLog: https://github.com/commercialhaskell/stack/blob/master/ChangeLog.md#v271
-      viArch:
-        A_64:
-          Linux_UnknownLinux:
-            unknown_versioning: &stack-64
-              dlUri: https://github.com/commercialhaskell/stack/releases/download/v2.7.1/stack-2.7.1-linux-x86_64.tar.gz
-              dlHash: 2bc47749ee4be5eccb52a2d4a6a00b0f3b28b92517742b40c675836d7db2777d
-              dlSubdir:
-                RegexDir: "stack-.*"
-          Darwin:
-            unknown_versioning:
-              dlUri: https://github.com/commercialhaskell/stack/releases/download/v2.7.1/stack-2.7.1-osx-x86_64.tar.gz
-              dlHash: 4248c6fbc87e8a2c06f39e867eb5ef28eae0d99470137cb415356c631c0dcbf2
-              dlSubdir:
-                RegexDir: "stack-.*"
-          Windows:
-            unknown_versioning:
-              dlUri: https://github.com/commercialhaskell/stack/releases/download/v2.7.1/stack-2.7.1-windows-x86_64.tar.gz
-              dlHash: 8452f5fc9235620a84863f2f68e5f681c72d0d181cde50482f178a966ee0ceb9
-              dlSubdir:
-                RegexDir: "stack-.*"
-          Linux_Alpine:
-            unknown_versioning: *stack-64
-
--- a/ghcup-0.0.5.yaml
+++ b/ghcup-0.0.5.yaml
--- a/ghcup.cabal
+++ b/ghcup.cabal
@@ -1,6 +1,6 @@
 cabal-version:   3.0
 name:            ghcup
-version:         0.1.14.2
+version:         0.1.15.2
 license:         LGPL-3.0-only
 license-file:    LICENSE
 copyright:       Julian Ospald 2020
@@ -19,6 +19,7 @@ extra-doc-files:
  CHANGELOG.md
  config.yaml
  ghcup-0.0.4.yaml
+  ghcup-0.0.5.yaml
  HACKING.md
  README.md
  RELEASING.md
@@ -42,9 +43,7 @@ flag internal-downloader
  manual:      True

 flag tar
-  description:
-    Use tar-bytestring instead of libarchive. This is always enabled on windows.
-
+  description: Use tar-bytestring instead of libarchive.
  default:     False
  manual:      True

@@ -75,14 +74,20 @@ library
  autogen-modules:    Paths_ghcup
  default-language:   Haskell2010
  default-extensions:
+    DeriveGeneric
    LambdaCase
    MultiWayIf
+    NamedFieldPuns
    PackageImports
+    QuasiQuotes
    RecordWildCards
    ScopedTypeVariables
    Strict
    StrictData
    TupleSections
+    TypeApplications
+    TypeFamilies
+    ViewPatterns

  ghc-options:
    -Wall -fwarn-tabs -fwarn-incomplete-uni-patterns
@@ -108,7 +113,7 @@ library
    , generics-sop          ^>=0.5
    , haskus-utils-types    ^>=1.5
    , haskus-utils-variant  >=3.0        && <3.2
-    , lzma-static           ^>=5.2.5.2
+    , lzma-static           ^>=5.2.5.3
    , megaparsec            >=8.0.0      && <9.1
    , monad-logger          ^>=0.3.31
    , mtl                   ^>=2.2
@@ -118,17 +123,14 @@ library
    , parsec                ^>=3.1
    , pretty                ^>=1.1.3.1
    , pretty-terminal       ^>=0.1.0.0
-    , process               ^>=1.6.9.0
    , regex-posix           ^>=0.96
    , resourcet             ^>=1.2.2
    , safe                  ^>=0.3.18
    , safe-exceptions       ^>=0.1
    , split                 ^>=0.2.3.4
-    , streamly              ^>=0.7.3
-    , streamly-bytestring   ^>=0.1.2
    , strict-base           ^>=0.4
    , string-interpolate    >=0.2.0.0    && <0.4
-    , template-haskell      >=2.7        && <2.17
+    , template-haskell      >=2.7        && <2.18
    , temporary             ^>=1.3
    , text                  ^>=1.2.4.0
    , time                  ^>=1.9.3
@@ -138,10 +140,10 @@ library
    , uri-bytestring        ^>=0.3.2.2
    , utf8-string           ^>=1.0
    , vector                ^>=0.12
-    , versions              ^>=4.0.1
+    , versions              >=4.0.1      && <5.1
    , word8                 ^>=0.1.3
    , yaml                  ^>=0.11.4.0
-    , zip                   ^>=1.7.0
+    , zip                   ^>=1.7.1
    , zlib                  ^>=0.6.2.2

  if (flag(internal-downloader) && !os(windows))
@@ -150,10 +152,10 @@ library
    build-depends:
      , HsOpenSSL              >=0.11.4.18
      , http-io-streams        >=0.1.2.0
-      , io-streams             >=1.5
+      , io-streams             >=1.5.2.1
      , terminal-progress-bar  >=0.4.1

-  if (flag(tar) || os(windows))
+  if flag(tar)
    cpp-options:   -DTAR
    build-depends: tar

@@ -163,14 +165,18 @@ library
  if os(windows)
    cpp-options:   -DIS_WINDOWS
    other-modules: GHCup.Utils.File.Windows
-    build-depends: bzlib
+    build-depends:
+      , bzlib
+      , process  ^>=1.6.11.0
+      , retry    ^>=0.8.1.2
+      , Win32    ^>=2.10

  else
    other-modules: GHCup.Utils.File.Posix
    build-depends:
-        bz2              >=0.5.0.5 && <1.1
+      , bz2              >=0.5.0.5 && <1.1
      , hpath-posix      ^>=0.13.3
-      , streamly-posix   ^>=0.1.0.0
+      , process          ^>=1.6.9
      , unix             ^>=2.7
      , unix-bytestring  ^>=0.3.7.3

@@ -185,6 +191,7 @@ executable ghcup
  default-extensions:
    LambdaCase
    MultiWayIf
+    NamedFieldPuns
    PackageImports
    RecordWildCards
    ScopedTypeVariables
@@ -197,7 +204,6 @@ executable ghcup
    -fwarn-incomplete-record-updates -threaded

  build-depends:
-    , aeson                 >=1.4      && <1.6
    , base                  >=4.13     && <5
    , bytestring            ^>=0.10
    , containers            ^>=0.6
@@ -214,11 +220,11 @@ executable ghcup
    , safe                  ^>=0.3.18
    , safe-exceptions       ^>=0.1
    , string-interpolate    >=0.2.0.0  && <0.4
-    , template-haskell      >=2.7      && <2.17
+    , 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
+    , versions              >=4.0.1    && <5.1

  if flag(internal-downloader)
    cpp-options: -DINTERNAL_DOWNLOADER
@@ -227,11 +233,15 @@ executable ghcup
    cpp-options:   -DBRICK
    other-modules: BrickMain
    build-depends:
-      , brick   >=0.5    && <0.62
-      , vector  ^>=0.12
-      , vty     >=5.28.2 && <5.34
+      , brick         >=0.5    && <0.62
+      , transformers  ^>=0.5
+      , vector        ^>=0.12
+      , vty           >=5.28.2 && <5.34

-  if (flag(tar) || os(windows))
+  if os(windows)
+    cpp-options: -DIS_WINDOWS
+
+  if flag(tar)
    cpp-options: -DTAR

  else
@@ -243,20 +253,26 @@ executable ghcup-gen
  other-modules:      Validate
  default-language:   Haskell2010
  default-extensions:
+    DeriveGeneric
    LambdaCase
    MultiWayIf
+    NamedFieldPuns
    PackageImports
+    QuasiQuotes
    RecordWildCards
    ScopedTypeVariables
+    Strict
+    StrictData
    TupleSections
+    TypeApplications
+    TypeFamilies
+    ViewPatterns

  ghc-options:
    -Wall -fwarn-tabs -fwarn-incomplete-uni-patterns
    -fwarn-incomplete-record-updates -threaded

  build-depends:
-    , aeson                 >=1.4      && <1.6
-    , aeson-pretty          ^>=0.8.8
    , base                  >=4.13     && <5
    , bytestring            ^>=0.10
    , containers            ^>=0.6
@@ -276,11 +292,10 @@ executable ghcup-gen
    , text                  ^>=1.2.4.0
    , transformers          ^>=0.5
    , uri-bytestring        ^>=0.3.2.2
-    , utf8-string           ^>=1.0
-    , versions              ^>=4.0.1
+    , versions              >=4.0.1    && <5.1
    , yaml                  ^>=0.11.4.0

-  if (flag(tar) || os(windows))
+  if flag(tar)
    cpp-options:   -DTAR
    build-depends: tar

@@ -309,6 +324,8 @@ test-suite ghcup-test
    -Wall -fwarn-tabs -fwarn-incomplete-uni-patterns
    -fwarn-incomplete-record-updates

+  build-tool-depends: hspec-discover:hspec-discover
+
  build-depends:
    , base                      >=4.13    && <5
    , bytestring                ^>=0.10
@@ -316,9 +333,9 @@ test-suite ghcup-test
    , generic-arbitrary         ^>=0.1.0
    , ghcup
    , hspec                     ^>=2.7.10
-    , hspec-golden-aeson        >=0.9 && <0.10
+    , 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
+    , versions                  >=4.0.1   && <5.1
--- a/golden/GHCupInfo.json
+++ b/golden/GHCupInfo.json
--- a/lib/GHCup.hs
+++ b/lib/GHCup.hs
--- a/lib/GHCup/Download.hs
+++ b/lib/GHCup/Download.hs
@@ -36,7 +36,7 @@ import           GHCup.Errors
 import           GHCup.Types
 import           GHCup.Types.JSON               ( )
 import           GHCup.Types.Optics
-import           GHCup.Utils
+import           GHCup.Utils.Dirs
 import           GHCup.Utils.File
 import           GHCup.Utils.Prelude
 import           GHCup.Version
@@ -53,8 +53,8 @@ import           Control.Monad.Trans.Resource
                                         hiding ( throwM )
 import           Data.Aeson
 import           Data.Bifunctor
-#if defined(INTERNAL_DOWNLOADER)
 import           Data.ByteString                ( ByteString )
+#if defined(INTERNAL_DOWNLOADER)
 import           Data.CaseInsensitive           ( CI )
 #endif
 import           Data.List.Extra
@@ -66,6 +66,7 @@ import           Data.Time.Clock.POSIX
 import           Data.Time.Format
 #endif
 import           Data.Versions
+import           Data.Word8
 import           GHC.IO.Exception
 import           Haskus.Utils.Variant.Excepts
 import           Optics
@@ -80,6 +81,7 @@ import           System.IO.Error
 import           URI.ByteString

 import qualified Crypto.Hash.SHA256            as SHA256
+import qualified Data.ByteString               as B
 import qualified Data.ByteString.Base16        as B16
 import qualified Data.ByteString.Lazy          as L
 import qualified Data.Map.Strict               as M
@@ -110,26 +112,26 @@ getDownloadsF :: ( FromJSONKey Tool
                 , MonadLogger m
                 , MonadThrow m
                 , MonadFail m
-                 , MonadReader AppState m
                 )
-              => URLSource
+              => Settings
+              -> Dirs
              -> Excepts
                   '[JSONError , DownloadFailed , FileDoesNotExistError]
                   m
                   GHCupInfo
-getDownloadsF urlSource = do
+getDownloadsF settings@Settings{ urlSource } dirs = do
  case urlSource of
-    GHCupURL -> liftE getBase
+    GHCupURL -> liftE $ getBase dirs settings
    (OwnSource url) -> do
-      bs <- reThrowAll DownloadFailed $ downloadBS url
+      bs <- reThrowAll DownloadFailed $ downloadBS (downloader settings) url
      lE' JSONDecodeError $ first show $ Y.decodeEither' (L.toStrict bs)
    (OwnSpec av) -> pure av
    (AddSource (Left ext)) -> do
-      base <- liftE getBase
+      base <- liftE $ getBase dirs settings
      pure (mergeGhcupInfo base ext)
    (AddSource (Right uri)) -> do
-      base <- liftE getBase
-      bsExt <- reThrowAll DownloadFailed $ downloadBS uri
+      base <- liftE $ getBase dirs settings
+      bsExt <- reThrowAll DownloadFailed $ downloadBS (downloader settings) uri
      ext <- lE' JSONDecodeError $ first show $ Y.decodeEither' (L.toStrict bsExt)
      pure (mergeGhcupInfo base ext)

@@ -138,18 +140,19 @@ getDownloadsF urlSource = do
  mergeGhcupInfo :: GHCupInfo -- ^ base to merge with
                 -> GHCupInfo -- ^ extension overwriting the base
                 -> GHCupInfo
-  mergeGhcupInfo (GHCupInfo tr base) (GHCupInfo _ ext) =
-    let new = M.mapWithKey (\k a -> case M.lookup k ext of
+  mergeGhcupInfo (GHCupInfo tr base base2) (GHCupInfo _ ext ext2) =
+    let newDownloads = M.mapWithKey (\k a -> case M.lookup k ext of
                                        Just a' -> M.union a' a
                                        Nothing -> a
-                           ) base
-    in GHCupInfo tr new
+                                    ) base
+        newGlobalTools = M.union base2 ext2
+    in GHCupInfo tr newDownloads newGlobalTools


-readFromCache :: (MonadIO m, MonadCatch m, MonadLogger m, MonadReader AppState m)
-              => Excepts '[JSONError, FileDoesNotExistError] m GHCupInfo
-readFromCache = do
-  AppState {dirs = Dirs {..}} <- lift ask
+readFromCache :: (MonadIO m, MonadCatch m, MonadLogger m)
+              => Dirs
+              -> Excepts '[JSONError, FileDoesNotExistError] m GHCupInfo
+readFromCache Dirs {..} = do
  lift $ $(logWarn)
    [i|Could not get download info, trying cached version (this may not be recent!)|]
  let path = view pathL' ghcupURL
@@ -162,12 +165,14 @@ readFromCache = do
  lE' JSONDecodeError $ first show $ Y.decodeEither' (L.toStrict bs)


-getBase :: (MonadFail m, MonadIO m, MonadCatch m, MonadLogger m, MonadReader AppState m)
-        => Excepts '[JSONError , FileDoesNotExistError] m GHCupInfo
-getBase =
-  handleIO (\_ -> readFromCache)
+getBase :: (MonadFail m, MonadIO m, MonadCatch m, MonadLogger m)
+        => Dirs
+        -> Settings
+        -> Excepts '[JSONError , FileDoesNotExistError] m GHCupInfo
+getBase dirs@Dirs{..} Settings{ downloader }  =
+  handleIO (\_ -> readFromCache dirs)
  $ catchE @_ @'[JSONError, FileDoesNotExistError]
-      (\(DownloadFailed _) -> readFromCache)
+      (\(DownloadFailed _) -> readFromCache dirs)
  (reThrowAll @_ @_ @'[JSONError, DownloadFailed] DownloadFailed (smartDl ghcupURL)
    >>= (liftE . lE' @_ @_ @'[JSONError] JSONDecodeError . first show . Y.decodeEither' . L.toStrict))
    where
@@ -185,7 +190,6 @@ getBase =
             , MonadIO m1
             , MonadFail m1
             , MonadLogger m1
-             , MonadReader AppState m1
             )
          => URI
          -> Excepts
@@ -200,7 +204,6 @@ getBase =
               m1
               L.ByteString
  smartDl uri' = do
-    AppState {dirs = Dirs {..}} <- lift ask
    let path = view pathL' uri'
    let json_file = cacheDir </> (T.unpack . decUTF8Safe . urlBaseName $ path)
    e         <- liftIO $ doesFileExist json_file
@@ -224,7 +227,6 @@ getBase =
          else -- access in less than 5 minutes, re-use file
               liftIO $ L.readFile json_file
      else do
-        liftIO $ createDirRecursive' cacheDir
        getModTime >>= \case
          Just modTime -> dlWithMod modTime json_file
          Nothing -> do
@@ -235,12 +237,12 @@ getBase =

   where
    dlWithMod modTime json_file = do
-      bs <- liftE $ downloadBS uri'
+      bs <- liftE $ downloadBS downloader uri'
      liftIO $ writeFileWithModTime modTime json_file bs
      pure bs
    dlWithoutMod json_file = do
-      bs <- liftE $ downloadBS uri'
-      liftIO $ hideError doesNotExistErrorType $ removeFile json_file
+      bs <- liftE $ downloadBS downloader uri'
+      liftIO $ hideError doesNotExistErrorType $ rmFile json_file
      liftIO $ L.writeFile json_file bs
      liftIO $ setModificationTime json_file (posixSecondsToUTCTime (fromIntegral @Int 0))
      pure bs
@@ -320,16 +322,16 @@ getDownloadInfo t v (PlatformRequest a p mv) dls = maybe
 --
 -- The file must not exist.
 download :: ( MonadMask m
-            , MonadReader AppState m
            , MonadThrow m
            , MonadLogger m
            , MonadIO m
            )
-         => DownloadInfo
+         => Settings
+         -> DownloadInfo
         -> FilePath          -- ^ destination dir
         -> Maybe FilePath    -- ^ optional filename
         -> Excepts '[DigestError , DownloadFailed] m FilePath
-download dli dest mfn
+download settings@Settings{ downloader } dli dest mfn
  | scheme == "https" = dl
  | scheme == "http"  = dl
  | scheme == "file"  = cp
@@ -354,20 +356,20 @@ download dli dest mfn

    -- download
    flip onException
-         (liftIO $ hideError doesNotExistErrorType $ removeFile destFile)
+         (liftIO $ hideError doesNotExistErrorType $ rmFile destFile)
     $ catchAllE @_ @'[ProcessError, DownloadFailed, UnsupportedScheme]
          (\e ->
-            liftIO (hideError doesNotExistErrorType $ removeFile destFile)
+            liftIO (hideError doesNotExistErrorType $ rmFile destFile)
              >> (throwE . DownloadFailed $ e)
          ) $ do
-              lift getDownloader >>= \case
+              case downloader of
                Curl -> do
                  o' <- liftIO getCurlOpts
-                  liftE $ lEM @_ @'[ProcessError] $ liftIO $ exec "curl" 
+                  liftE $ lEM @_ @'[ProcessError] $ exec "curl" 
                    (o' ++ ["-fL", "-o", destFile, (T.unpack . decUTF8Safe) $ serializeURIRef' $ view dlUri dli]) Nothing Nothing
                Wget -> do
                  o' <- liftIO getWgetOpts
-                  liftE $ lEM @_ @'[ProcessError] $ liftIO $ exec "wget" 
+                  liftE $ lEM @_ @'[ProcessError] $ exec "wget" 
                    (o' ++ ["-O", destFile , (T.unpack . decUTF8Safe) $ serializeURIRef' $ view dlUri dli]) Nothing Nothing
 #if defined(INTERNAL_DOWNLOADER)
                Internal -> do
@@ -375,7 +377,7 @@ download dli dest mfn
                  liftE $ downloadToFile https host fullPath port destFile
 #endif

-    liftE $ checkDigest dli destFile
+    liftE $ checkDigest settings dli destFile
    pure destFile

  -- Manage to find a file we can write the body into.
@@ -393,27 +395,40 @@ downloadCached :: ( MonadMask m
                  , MonadLogger m
                  , MonadIO m
                  , MonadUnliftIO m
-                  , MonadReader AppState m
                  )
-               => DownloadInfo
+               => Settings
+               -> Dirs
+               -> DownloadInfo
               -> Maybe FilePath  -- ^ optional filename
               -> Excepts '[DigestError , DownloadFailed] m FilePath
-downloadCached dli mfn = do
-  cache <- lift getCache
+downloadCached settings@Settings{ cache } dirs dli mfn = do
  case cache of
-    True -> do
-      AppState {dirs = Dirs {..}} <- lift ask
-      let fn = fromMaybe ((T.unpack . decUTF8Safe) $ urlBaseName $ view (dlUri % pathL') dli) mfn
-      let cachfile = cacheDir </> fn
-      fileExists <- liftIO $ doesFileExist cachfile
-      if
-        | fileExists -> do
-          liftE $ checkDigest dli cachfile
-          pure cachfile
-        | otherwise -> liftE $ download dli cacheDir mfn
+    True -> downloadCached' settings dirs dli mfn
    False -> do
      tmp <- lift withGHCupTmpDir
-      liftE $ download dli tmp mfn
+      liftE $ download settings dli tmp mfn
+
+
+downloadCached' :: ( MonadMask m
+                   , MonadThrow m
+                   , MonadLogger m
+                   , MonadIO m
+                   , MonadUnliftIO m
+                   )
+                => Settings
+                -> Dirs
+                -> DownloadInfo
+                -> Maybe FilePath  -- ^ optional filename
+                -> Excepts '[DigestError , DownloadFailed] m FilePath
+downloadCached' settings Dirs{..} dli mfn = do
+  let fn = fromMaybe ((T.unpack . decUTF8Safe) $ urlBaseName $ view (dlUri % pathL') dli) mfn
+  let cachfile = cacheDir </> fn
+  fileExists <- liftIO $ doesFileExist cachfile
+  if
+    | fileExists -> do
+      liftE $ checkDigest settings dli cachfile
+      pure cachfile
+    | otherwise -> liftE $ download settings dli cacheDir mfn



@@ -426,8 +441,9 @@ downloadCached dli mfn = do


 -- | This is used for downloading the JSON.
-downloadBS :: (MonadReader AppState m, MonadCatch m, MonadIO m, MonadLogger m)
-           => URI
+downloadBS :: (MonadCatch m, MonadIO m, MonadLogger m)
+           => Downloader
+           -> URI
           -> Excepts
                '[ FileDoesNotExistError
                 , HTTPStatusError
@@ -439,7 +455,7 @@ downloadBS :: (MonadReader AppState m, MonadCatch m, MonadIO m, MonadLogger m)
                 ]
                m
                L.ByteString
-downloadBS uri'
+downloadBS downloader uri'
  | scheme == "https"
  = dl True
  | scheme == "http"
@@ -459,12 +475,12 @@ downloadBS uri'
  dl _ = do
 #endif
    lift $ $(logDebug) [i|downloading: #{serializeURIRef' uri'}|]
-    lift getDownloader >>= \case
+    case downloader of
      Curl -> do
        o' <- liftIO getCurlOpts
        let exe = "curl"
            args = o' ++ ["-sSfL", T.unpack $ decUTF8Safe $ serializeURIRef' uri']
-        liftIO (executeOut exe args Nothing) >>= \case
+        lift (executeOut exe args Nothing) >>= \case
          CapturedProcess ExitSuccess stdout _ -> do
            pure stdout
          CapturedProcess (ExitFailure i') _ _ -> throwE $ NonZeroExit i' exe args
@@ -472,7 +488,7 @@ downloadBS uri'
        o' <- liftIO getWgetOpts
        let exe = "wget"
            args = o' ++ ["-qO-", T.unpack $ decUTF8Safe $ serializeURIRef' uri']
-        liftIO (executeOut exe args Nothing) >>= \case
+        lift (executeOut exe args Nothing) >>= \case
          CapturedProcess ExitSuccess stdout _ -> do
            pure stdout
          CapturedProcess (ExitFailure i') _ _ -> throwE $ NonZeroExit i' exe args
@@ -483,12 +499,13 @@ downloadBS uri'
 #endif


-checkDigest :: (MonadIO m, MonadThrow m, MonadLogger m, MonadReader AppState m)
-            => DownloadInfo
+checkDigest :: (MonadIO m, MonadThrow m, MonadLogger m)
+            => Settings
+            -> DownloadInfo
            -> FilePath
            -> Excepts '[DigestError] m ()
-checkDigest dli file = do
-  verify <- lift ask <&> (not . noVerify . settings)
+checkDigest Settings{ noVerify } dli file = do
+  let verify = not noVerify
  when verify $ do
    let p' = takeFileName file
    lift $ $(logInfo) [i|verifying digest of: #{p'}|]
@@ -513,3 +530,8 @@ getWgetOpts =
    Just r  -> pure $ splitOn " " r
    Nothing -> pure []

+
+urlBaseName :: ByteString  -- ^ the url path (without scheme and host)
+            -> ByteString
+urlBaseName = snd . B.breakEnd (== _slash) . urlDecode False
+
--- a/lib/GHCup/Platform.hs
+++ b/lib/GHCup/Platform.hs
@@ -44,6 +44,7 @@ import           Prelude                 hiding ( abs
 import           System.Info
 import           System.Directory
 import           System.OsRelease
+import           Text.PrettyPrint.HughesPJClass ( prettyShow )
 import           Text.Regex.Posix

 import qualified Data.Text                     as T
@@ -57,7 +58,7 @@ import qualified Data.Text.IO                  as T


 -- | Get the full platform request, consisting of architecture, distro, ...
-platformRequest :: (MonadLogger m, MonadCatch m, MonadIO m)
+platformRequest :: (Alternative m, MonadFail m, MonadLogger m, MonadCatch m, MonadIO m)
                => Excepts
                     '[NoCompatiblePlatform, NoCompatibleArch, DistroNotFound]
                     m
@@ -82,7 +83,7 @@ getArchitecture = case arch of
  what          -> Left (NoCompatibleArch what)


-getPlatform :: (MonadLogger m, MonadCatch m, MonadIO m)
+getPlatform :: (Alternative m, MonadLogger m, MonadCatch m, MonadIO m, MonadFail m)
            => Excepts
                 '[NoCompatiblePlatform, DistroNotFound]
                 m
@@ -97,7 +98,6 @@ getPlatform = do
        either (const Nothing) Just
          . versioning
          -- TODO: maybe do this somewhere else
-          . getMajorVersion
          . decUTF8Safe'
        <$> getDarwinVersion
      pure $ PlatformResult { _platform = Darwin, _distroVersion = ver }
@@ -108,26 +108,24 @@ getPlatform = do
      pure $ PlatformResult { _platform = FreeBSD, _distroVersion = ver }
    "mingw32" -> pure PlatformResult { _platform = Windows, _distroVersion = Nothing }
    what -> throwE $ NoCompatiblePlatform what
-  lift $ $(logDebug) [i|Identified Platform as: #{pfr}|]
+  lift $ $(logDebug) [i|Identified Platform as: #{prettyShow pfr}|]
  pure pfr
 where
-  getMajorVersion = T.intercalate "." . take 2 . T.split (== '.')
-  getFreeBSDVersion =
-    liftIO $ fmap _stdOut $ executeOut "freebsd-version" [] Nothing
-  getDarwinVersion = liftIO $ fmap _stdOut $ executeOut "sw_vers"
+  getFreeBSDVersion = lift $ fmap _stdOut $ executeOut "freebsd-version" [] Nothing
+  getDarwinVersion = lift $ fmap _stdOut $ executeOut "sw_vers"
                                                        ["-productVersion"]
                                                        Nothing


-getLinuxDistro :: (MonadCatch m, MonadIO m)
+getLinuxDistro :: (Alternative m, MonadCatch m, MonadIO m, MonadFail m)
               => Excepts '[DistroNotFound] m (LinuxDistro, Maybe Versioning)
 getLinuxDistro = do
  -- TODO: don't do alternative on IO, because it hides bugs
-  (name, ver) <- handleIO (\_ -> throwE DistroNotFound) $ liftIO $ asum
-    [ try_os_release
+  (name, ver) <- handleIO (\_ -> throwE DistroNotFound) $ lift $ asum
+    [ liftIO try_os_release
    , try_lsb_release_cmd
-    , try_redhat_release
-    , try_debian_version
+    , liftIO try_redhat_release
+    , liftIO try_debian_version
    ]
  let parsedVer = ver >>= either (const Nothing) Just . versioning
      distro    = if
@@ -163,9 +161,10 @@ getLinuxDistro = do
      fmap osRelease <$> parseOsRelease
    pure (T.pack name, fmap T.pack version_id)

-  try_lsb_release_cmd :: IO (Text, Maybe Text)
+  try_lsb_release_cmd :: (MonadFail m, MonadIO m)
+                      => m (Text, Maybe Text)
  try_lsb_release_cmd = do
-    (Just _) <- findExecutable lsb_release_cmd
+    (Just _) <- liftIO $ findExecutable lsb_release_cmd
    name     <- fmap _stdOut $ executeOut lsb_release_cmd ["-si"] Nothing
    ver      <- fmap _stdOut $ executeOut lsb_release_cmd ["-sr"] Nothing
    pure (decUTF8Safe' name, Just $ decUTF8Safe' ver)
--- a/lib/GHCup/Types.hs
+++ b/lib/GHCup/Types.hs
@@ -20,16 +20,20 @@ module GHCup.Types
  )
  where

+import           Control.Applicative
+import           Control.Monad.Logger
 import           Data.Map.Strict                ( Map )
 import           Data.List.NonEmpty             ( NonEmpty (..) )
 import           Data.Text                      ( Text )
 import           Data.Versions
+import           Haskus.Utils.Variant.Excepts
 import           Text.PrettyPrint.HughesPJClass (Pretty, pPrint, text)
 import           URI.ByteString
 #if defined(BRICK)
 import           Graphics.Vty                   ( Key(..) )
 #endif

+import qualified Control.Monad.Trans.Class     as Trans
 import qualified Data.Text                     as T
 import qualified GHC.Generics                  as GHC

@@ -52,6 +56,7 @@ data Key = KEsc  | KChar Char | KBS | KEnter
 data GHCupInfo = GHCupInfo
  { _toolRequirements :: ToolRequirements
  , _ghcupDownloads   :: GHCupDownloads
+  , _globalTools      :: Map GlobalTool DownloadInfo
  }
  deriving (Show, GHC.Generic)

@@ -100,6 +105,9 @@ data Tool = GHC
          | Stack
  deriving (Eq, GHC.Generic, Ord, Show, Enum, Bounded)

+data GlobalTool = ShimGen
+  deriving (Eq, GHC.Generic, Ord, Show, Enum, Bounded)
+

 -- | All necessary information of a tool version, including
 -- source download and per-architecture downloads.
@@ -307,6 +315,8 @@ data AppState = AppState
  { settings :: Settings
  , dirs :: Dirs
  , keyBindings :: KeyBindings
+  , ghcupInfo :: GHCupInfo
+  , pfreq :: PlatformRequest
  } deriving (Show)

 data Settings = Settings
@@ -437,3 +447,16 @@ instance Pretty Versioning where

 instance Pretty Version where
  pPrint = text . T.unpack . prettyVer
+
+
+instance (Monad m, Alternative m) => Alternative (LoggingT m) where
+    empty   = Trans.lift empty
+    {-# INLINE empty #-}
+    m <|> n = LoggingT $ \ r -> runLoggingT m r <|> runLoggingT n r
+    {-# INLINE (<|>) #-}
+
+
+instance MonadLogger m => MonadLogger (Excepts e m) where
+  monadLoggerLog a b c d = Trans.lift $ monadLoggerLog a b c d
+
+
--- a/lib/GHCup/Types/JSON.hs
+++ b/lib/GHCup/Types/JSON.hs
@@ -44,23 +44,16 @@ import qualified Text.Megaparsec.Char          as MPC

 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } { fieldLabelModifier = removeLensFieldLabel } ''Architecture
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''LinuxDistro
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Mess
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''MChunk
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Platform
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''SemVer
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Tool
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''VSep
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''VUnit
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''VersionInfo
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''DownloadInfo
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''GHCupInfo
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Requirements
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''MChunk
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Platform
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Mess
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''SemVer
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Tool
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''GlobalTool
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''KeepDirs
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Downloader
-deriveJSON defaultOptions { sumEncoding = ObjectWithSingleField } ''URLSource
-deriveJSON defaultOptions { fieldLabelModifier = \str' -> maybe str' T.unpack . T.stripPrefix (T.pack "u-") . T.pack . kebab $ str' } ''UserSettings
-deriveJSON defaultOptions { fieldLabelModifier = \str' -> maybe str' T.unpack . T.stripPrefix (T.pack "k-") . T.pack . kebab $ str' } ''UserKeyBindings
-deriveJSON defaultOptions { sumEncoding = ObjectWithSingleField } ''Key

 instance ToJSON Tag where
  toJSON Latest             = String "Latest"
@@ -197,6 +190,12 @@ instance ToJSONKey Tool where
 instance FromJSONKey Tool where
  fromJSONKey = genericFromJSONKey defaultJSONKeyOptions

+instance ToJSONKey GlobalTool where
+  toJSONKey = genericToJSONKey defaultJSONKeyOptions
+
+instance FromJSONKey GlobalTool where
+  fromJSONKey = genericFromJSONKey defaultJSONKeyOptions
+
 instance ToJSON TarDir where
  toJSON (RealDir  p) = toJSON p
  toJSON (RegexDir r) = object ["RegexDir" .= r]
@@ -306,3 +305,14 @@ instance FromJSONKey (Maybe VersionRange)  where
    just t = case MP.parse versionRangeP "" t of
      Right x -> pure $ Just x
      Left  e -> fail $ "Failure in (Maybe VersionRange) (FromJSONKey)" <> MP.errorBundlePretty e
+
+
+
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Requirements
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''DownloadInfo
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''VersionInfo
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''GHCupInfo
+deriveJSON defaultOptions { sumEncoding = ObjectWithSingleField } ''URLSource
+deriveJSON defaultOptions { sumEncoding = ObjectWithSingleField } ''Key
+deriveJSON defaultOptions { fieldLabelModifier = \str' -> maybe str' T.unpack . T.stripPrefix (T.pack "k-") . T.pack . kebab $ str' } ''UserKeyBindings
+deriveJSON defaultOptions { fieldLabelModifier = \str' -> maybe str' T.unpack . T.stripPrefix (T.pack "u-") . T.pack . kebab $ str' } ''UserSettings
--- a/lib/GHCup/Utils.hs
+++ b/lib/GHCup/Utils.hs
@@ -26,6 +26,9 @@ module GHCup.Utils
 where


+#if defined(IS_WINDOWS)
+import           GHCup.Download
+#endif
 import           GHCup.Errors
 import           GHCup.Types
 import           GHCup.Types.Optics
@@ -48,6 +51,11 @@ import           Control.Monad.Fail             ( MonadFail )
 #endif
 import           Control.Monad.Logger
 import           Control.Monad.Reader
+import           Control.Monad.Trans.Resource
+                                         hiding ( throwM )
+#if defined(IS_WINDOWS)
+import           Data.Bits
+#endif
 import           Data.ByteString                ( ByteString )
 import           Data.Either
 import           Data.Foldable
@@ -58,7 +66,6 @@ import           Data.Maybe
 import           Data.String.Interpolate
 import           Data.Text                      ( Text )
 import           Data.Versions
-import           Data.Word8
 import           GHC.IO.Exception
 import           Haskus.Utils.Variant.Excepts
 import           Optics
@@ -66,7 +73,11 @@ import           Safe
 import           System.Directory      hiding   ( findFiles )
 import           System.FilePath
 import           System.IO.Error
-import           System.IO.Unsafe               ( unsafeInterleaveIO )
+#if defined(IS_WINDOWS)
+import           System.Win32.Console
+import           System.Win32.File     hiding ( copyFile )
+import           System.Win32.Types
+#endif
 import           Text.Regex.Posix
 import           URI.ByteString

@@ -76,7 +87,6 @@ import qualified Codec.Archive.Tar             as Tar
 import qualified Codec.Compression.BZip        as BZip
 import qualified Codec.Compression.GZip        as GZip
 import qualified Codec.Compression.Lzma        as Lzma
-import qualified Data.ByteString               as B
 import qualified Data.ByteString.Lazy          as BL
 import qualified Data.Map.Strict               as Map
 import qualified Data.Text                     as T
@@ -121,7 +131,7 @@ rmMinorSymlinks tv@GHCTargetVersion{..} = do
    let f_xyz = f <> "-" <> T.unpack (prettyVer _tvVersion) <> exeExt
    let fullF = binDir </> f_xyz
    lift $ $(logDebug) [i|rm -f #{fullF}|]
-    liftIO $ hideError doesNotExistErrorType $ removeFile fullF
+    liftIO $ hideError doesNotExistErrorType $ rmLink fullF


 -- | Removes the set ghc version for the given target, if any.
@@ -141,11 +151,11 @@ rmPlain target = do
    forM_ files $ \f -> do
      let fullF = binDir </> f <> exeExt
      lift $ $(logDebug) [i|rm -f #{fullF}|]
-      liftIO $ hideError doesNotExistErrorType $ removeFile fullF
+      liftIO $ hideError doesNotExistErrorType $ rmLink fullF
    -- old ghcup
    let hdc_file = binDir </> "haddock-ghc" <> exeExt
    lift $ $(logDebug) [i|rm -f #{hdc_file}|]
-    liftIO $ hideError doesNotExistErrorType $ removeFile hdc_file
+    liftIO $ hideError doesNotExistErrorType $ rmLink hdc_file


 -- | Remove the major GHC symlink, e.g. ghc-8.6.
@@ -168,7 +178,7 @@ rmMajorSymlinks tv@GHCTargetVersion{..} = do
    let f_xy = f <> "-" <> T.unpack v' <> exeExt
    let fullF = binDir </> f_xy
    lift $ $(logDebug) [i|rm -f #{fullF}|]
-    liftIO $ hideError doesNotExistErrorType $ removeFile fullF
+    liftIO $ hideError doesNotExistErrorType $ rmLink fullF



@@ -205,27 +215,27 @@ ghcSet mtarget = do
  -- link destination is of the form ../ghc/<ver>/bin/ghc
  -- for old ghcup, it is ../ghc/<ver>/bin/ghc-<ver>
  liftIO $ handleIO' NoSuchThing (\_ -> pure Nothing) $ do
-    link <- liftIO $ getSymbolicLinkTarget ghcBin
+    link <- liftIO $ getLinkTarget ghcBin
    Just <$> ghcLinkVersion link
-
-ghcLinkVersion :: MonadThrow m => FilePath -> m GHCTargetVersion
-ghcLinkVersion (T.pack . dropSuffix exeExt -> t) = throwEither $ MP.parse parser "ghcLinkVersion" t
 where
-  parser =
-      (do
-         _    <- parseUntil1 ghcSubPath
-         _    <- ghcSubPath
-         r    <- parseUntil1 pathSep
-         rest <- MP.getInput
-         MP.setInput r
-         x <- ghcTargetVerP
-         MP.setInput rest
-         pure x
-       )
-      <* pathSep
-      <* MP.takeRest
-      <* MP.eof
-  ghcSubPath = pathSep <* MP.chunk "ghc" *> pathSep
+  ghcLinkVersion :: MonadThrow m => FilePath -> m GHCTargetVersion
+  ghcLinkVersion (T.pack . dropSuffix exeExt -> t) = throwEither $ MP.parse parser "ghcLinkVersion" t
+   where
+    parser =
+        (do
+           _    <- parseUntil1 ghcSubPath
+           _    <- ghcSubPath
+           r    <- parseUntil1 pathSep
+           rest <- MP.getInput
+           MP.setInput r
+           x <- ghcTargetVerP
+           MP.setInput rest
+           pure x
+         )
+        <* pathSep
+        <* MP.takeRest
+        <* MP.eof
+    ghcSubPath = pathSep <* MP.chunk "ghc" *> pathSep

 -- | Get all installed GHCs by reading ~/.ghcup/ghc/<dir>.
 -- If a dir cannot be parsed, returns left.
@@ -242,23 +252,15 @@ getInstalledGHCs = do
 getInstalledCabals :: (MonadLogger m, MonadReader AppState m, MonadIO m, MonadCatch m)
                   => m [Either FilePath Version]
 getInstalledCabals = do
-  cs <- cabalSet -- for legacy cabal
-  getInstalledCabals' cs
-
-
-getInstalledCabals' :: (MonadLogger m, MonadReader AppState m, MonadIO m, MonadCatch m)
-                   => Maybe Version
-                   -> m [Either FilePath Version]
-getInstalledCabals' cs = do
  AppState {dirs = Dirs {..}} <- ask
  bins   <- liftIO $ handleIO (\_ -> pure []) $ findFiles
    binDir
    (makeRegexOpts compExtended execBlank ([s|^cabal-.*$|] :: ByteString))
-  vs <- forM bins $ \f -> case fmap (version . T.pack . dropSuffix exeExt) . stripPrefix "cabal-" $ f of
+  vs <- forM bins $ \f -> case version . T.pack <$> (stripSuffix exeExt =<< stripPrefix "cabal-" f) of
    Just (Right r) -> pure $ Right r
    Just (Left  _) -> pure $ Left f
    Nothing        -> pure $ Left f
-  pure $ maybe vs (\x -> nub $ Right x:vs) cs
+  pure $ nub vs


 -- | Whether the given cabal version is installed.
@@ -273,38 +275,27 @@ cabalSet :: (MonadLogger m, MonadReader AppState m, MonadIO m, MonadThrow m, Mon
 cabalSet = do
  AppState {dirs = Dirs {..}} <- ask
  let cabalbin = binDir </> "cabal" <> exeExt
-  b        <- handleIO (\_ -> pure False) $ liftIO $ pathIsSymbolicLink cabalbin
-  if
-    | b -> do
-      handleIO' NoSuchThing (\_ -> pure Nothing) $ do
-        broken <- liftIO $ isBrokenSymlink cabalbin
-        if broken
-          then pure Nothing
-          else do
-            link <- liftIO $ getSymbolicLinkTarget cabalbin
-            case linkVersion link of
-              Right v -> pure $ Just v
-              Left err -> do
-                $(logWarn) [i|Failed to parse cabal symlink target with: "#{err}". The symlink #{cabalbin} needs to point to valid cabal binary, such as 'cabal-3.4.0.0'.|]
-                pure Nothing
-    | otherwise -> do -- legacy behavior
-      mc <- liftIO $ handleIO (\_ -> pure Nothing) $ fmap Just $ executeOut
-        cabalbin
-        ["--numeric-version"]
-        Nothing
-      fmap join $ forM mc $ \c -> if
-        | not (BL.null (_stdOut c)), _exitCode c == ExitSuccess -> do
-          let reportedVer = fst . B.spanEnd (== _lf) . BL.toStrict . _stdOut $ c
-          case version $ decUTF8Safe reportedVer of
-            Left  e -> throwM e
-            Right r -> pure $ Just r
-        | otherwise -> pure Nothing
+
+  handleIO' NoSuchThing (\_ -> pure Nothing) $ do
+    broken <- liftIO $ isBrokenSymlink cabalbin
+    if broken
+      then pure Nothing
+      else do
+        link <- liftIO
+          $ handleIO' InvalidArgument
+            (\e -> pure $ Left (toException e))
+          $ fmap Right $ getLinkTarget cabalbin
+        case linkVersion =<< link of
+          Right v -> pure $ Just v
+          Left err -> do
+            $(logWarn) [i|Failed to parse cabal symlink target with: "#{err}". The symlink #{cabalbin} needs to point to valid cabal binary, such as 'cabal-3.4.0.0'.|]
+            pure Nothing
 where
  -- We try to be extra permissive with link destination parsing,
  -- because of:
  --   https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/119
  linkVersion :: MonadThrow m => FilePath -> m Version
-  linkVersion = throwEither . MP.parse parser "" . T.pack . dropSuffix exeExt
+  linkVersion = throwEither . MP.parse parser "linkVersion" . T.pack . dropSuffix exeExt

  parser
    =   MP.try (stripAbsolutePath *> cabalParse)
@@ -338,7 +329,7 @@ getInstalledHLSs = do
    )
  forM bins $ \f ->
    case
-          fmap (version . T.pack . dropSuffix exeExt) . stripPrefix "haskell-language-server-wrapper-" $ f
+          version . T.pack <$> (stripSuffix exeExt =<< stripPrefix "haskell-language-server-wrapper-" f)
      of
        Just (Right r) -> pure $ Right r
        Just (Left  _) -> pure $ Left f
@@ -357,33 +348,51 @@ getInstalledStacks = do
                   ([s|^stack-.*$|] :: ByteString)
    )
  forM bins $ \f ->
-    case
-          fmap (version . T.pack . dropSuffix exeExt) . stripPrefix "stack-" $ f
-      of
+    case version . T.pack <$> (stripSuffix exeExt =<< stripPrefix "stack-" f) of
        Just (Right r) -> pure $ Right r
        Just (Left  _) -> pure $ Left f
        Nothing        -> pure $ Left f

 -- Return the currently set stack version, if any.
 -- TODO: there's a lot of code duplication here :>
-stackSet :: (MonadReader AppState m, MonadIO m, MonadThrow m, MonadCatch m) => m (Maybe Version)
+stackSet :: (MonadReader AppState m, MonadIO m, MonadThrow m, MonadCatch m, MonadLogger m) => m (Maybe Version)
 stackSet = do
  AppState {dirs = Dirs {..}} <- ask
  let stackBin = binDir </> "stack" <> exeExt

-  liftIO $ handleIO' NoSuchThing (\_ -> pure Nothing) $ do
-    broken <- isBrokenSymlink stackBin
+  handleIO' NoSuchThing (\_ -> pure Nothing) $ do
+    broken <- liftIO $ isBrokenSymlink stackBin
    if broken
      then pure Nothing
      else do
-        link <- liftIO $ getSymbolicLinkTarget stackBin
-        Just <$> linkVersion link
+        link <- liftIO
+          $ handleIO' InvalidArgument
+            (\e -> pure $ Left (toException e))
+          $ fmap Right $ getLinkTarget stackBin
+        case linkVersion =<< link of
+          Right v -> pure $ Just v
+          Left err -> do
+            $(logWarn) [i|Failed to parse stack symlink target with: "#{err}". The symlink #{stackBin} needs to point to valid stack binary, such as 'stack-2.7.1'.|]
+            pure Nothing
 where
  linkVersion :: MonadThrow m => FilePath -> m Version
  linkVersion = throwEither . MP.parse parser "" . T.pack . dropSuffix exeExt
   where
-    parser =
-      MP.chunk "stack-" *> version'
+    parser
+      =   MP.try (stripAbsolutePath *> cabalParse)
+      <|> MP.try (stripRelativePath *> cabalParse)
+      <|> cabalParse
+    -- parses the version of "stack-2.7.1" -> "2.7.1"
+    cabalParse = MP.chunk "stack-" *> version'
+    -- parses any path component ending with path separator,
+    -- e.g. "foo/"
+    stripPathComponet = parseUntil1 pathSep *> pathSep
+    -- parses an absolute path up until the last path separator,
+    -- e.g. "/bar/baz/foo" -> "/bar/baz/", leaving "foo"
+    stripAbsolutePath = pathSep *> MP.many (MP.try stripPathComponet)
+    -- parses a relative path up until the last path separator,
+    -- e.g. "bar/baz/foo" -> "bar/baz/", leaving "foo"
+    stripRelativePath = MP.many (MP.try stripPathComponet)

 -- | Whether the given Stack version is installed.
 stackInstalled :: (MonadIO m, MonadReader AppState m, MonadCatch m) => Version -> m Bool
@@ -410,14 +419,27 @@ hlsSet = do
    if broken
      then pure Nothing
      else do
-        link <- liftIO $ getSymbolicLinkTarget hlsBin
+        link <- liftIO $ getLinkTarget hlsBin
        Just <$> linkVersion link
 where
  linkVersion :: MonadThrow m => FilePath -> m Version
  linkVersion = throwEither . MP.parse parser "" . T.pack . dropSuffix exeExt
   where
-    parser =
-      MP.chunk "haskell-language-server-wrapper-" *> version'
+    parser
+      =   MP.try (stripAbsolutePath *> cabalParse)
+      <|> MP.try (stripRelativePath *> cabalParse)
+      <|> cabalParse
+    -- parses the version of "haskell-language-server-wrapper-1.1.0" -> "1.1.0"
+    cabalParse = MP.chunk "haskell-language-server-wrapper-" *> version'
+    -- parses any path component ending with path separator,
+    -- e.g. "foo/"
+    stripPathComponet = parseUntil1 pathSep *> pathSep
+    -- parses an absolute path up until the last path separator,
+    -- e.g. "/bar/baz/foo" -> "/bar/baz/", leaving "foo"
+    stripAbsolutePath = pathSep *> MP.many (MP.try stripPathComponet)
+    -- parses a relative path up until the last path separator,
+    -- e.g. "bar/baz/foo" -> "bar/baz/", leaving "foo"
+    stripRelativePath = MP.many (MP.try stripPathComponet)


 -- | Return the GHC versions the currently selected HLS supports.
@@ -500,7 +522,7 @@ hlsSymlinks = do
    )
  filterM
    ( liftIO
-    . pathIsSymbolicLink
+    . pathIsLink
    . (binDir </>)
    )
    oldSyms
@@ -726,11 +748,6 @@ getDownloader = ask <&> downloader . settings
    -------------


-urlBaseName :: ByteString  -- ^ the url path (without scheme and host)
-            -> ByteString
-urlBaseName = snd . B.breakEnd (== _slash) . urlDecode False
-
-
 -- | Get tool files from @~\/.ghcup\/bin\/ghc\/\<ver\>\/bin\/\*@
 -- while ignoring @*-\<ver\>@ symlinks and accounting for cross triple prefix.
 --
@@ -810,19 +827,20 @@ make args workdir = do
  let mymake = if has_gmake then "gmake" else "make"
  execLogged mymake args workdir "ghc-make" Nothing

-makeOut :: [String]
+makeOut :: (MonadReader AppState m, MonadIO m)
+        => [String]
        -> Maybe FilePath
-        -> IO CapturedProcess
+        -> m CapturedProcess
 makeOut args workdir = do
  spaths    <- liftIO getSearchPath
  has_gmake <- isJust <$> liftIO (searchPath spaths "gmake")
  let mymake = if has_gmake then "gmake" else "make"
-  liftIO $ executeOut mymake args workdir
+  executeOut mymake args workdir


 -- | Try to apply patches in order. Fails with 'PatchFailed'
 -- on first failure.
-applyPatches :: (MonadLogger m, MonadIO m)
+applyPatches :: (MonadReader AppState m, MonadLogger m, MonadIO m)
             => FilePath   -- ^ dir containing patches
             -> FilePath   -- ^ dir to apply patches in
             -> Excepts '[PatchFailed] m ()
@@ -831,7 +849,7 @@ applyPatches pdir ddir = do
  forM_ (sort patches) $ \patch' -> do
    lift $ $(logInfo) [i|Applying patch #{patch'}|]
    fmap (either (const Nothing) Just)
-         (liftIO $ exec
+         (exec
           "patch"
           ["-p1", "-i", patch']
           (Just ddir)
@@ -840,7 +858,10 @@ applyPatches pdir ddir = do


 -- | https://gitlab.haskell.org/ghc/ghc/-/issues/17353
-darwinNotarization :: Platform -> FilePath -> IO (Either ProcessError ())
+darwinNotarization :: (MonadReader AppState m, MonadIO m)
+                   => Platform
+                   -> FilePath
+                   -> m (Either ProcessError ())
 darwinNotarization Darwin path = exec
  "xattr"
  ["-r", "-d", "com.apple.quarantine", path]
@@ -869,11 +890,11 @@ runBuildAction bdir instdir action = do
  AppState { settings = Settings {..} } <- lift ask
  let exAction = do
        forM_ instdir $ \dir ->
-          liftIO $ hideError doesNotExistErrorType $ removeDirectoryRecursive dir
+          liftIO $ hideError doesNotExistErrorType $ rmPath dir
        when (keepDirs == Never)
          $ liftIO
          $ hideError doesNotExistErrorType
-          $ removeDirectoryRecursive bdir
+          $ rmPath bdir
  v <-
    flip onException exAction
    $ catchAllE
@@ -882,90 +903,10 @@ runBuildAction bdir instdir action = do
          throwE (BuildFailed bdir es)
        ) action

-  when (keepDirs == Never || keepDirs == Errors) $ liftIO $ removeDirectoryRecursive
-    bdir
+  when (keepDirs == Never || keepDirs == Errors) $ liftIO $ rmPath bdir
  pure v


-- | More permissive version of 'createDirRecursive'. This doesn't
-- error when the destination is a symlink to a directory.
-createDirRecursive' :: FilePath -> IO ()
-createDirRecursive' p =
-  handleIO (\e -> if isAlreadyExistsError e then isSymlinkDir e else throwIO e)
-    . createDirectoryIfMissing True
-    $ p
-
- where
-  isSymlinkDir e = do
-    ft <- pathIsSymbolicLink p
-    case ft of
-      True -> do
-        rp <- canonicalizePath p
-        rft <- doesDirectoryExist rp
-        case rft of
-          True -> pure ()
-          _ -> throwIO e
-      _ -> throwIO e
-
-
-- | Recursively copy the contents of one directory to another path.
--
-- This is a rip-off of Cabal library.
-copyDirectoryRecursive :: FilePath -> FilePath -> IO ()
-copyDirectoryRecursive srcDir destDir = do
-  srcFiles <- getDirectoryContentsRecursive srcDir
-  copyFilesWith copyFile destDir [ (srcDir, f)
-                                   | f <- srcFiles ]
-  where
-    -- | Common implementation of 'copyFiles', 'installOrdinaryFiles',
-    -- 'installExecutableFiles' and 'installMaybeExecutableFiles'.
-    copyFilesWith :: (FilePath -> FilePath -> IO ())
-                  -> FilePath -> [(FilePath, FilePath)] -> IO ()
-    copyFilesWith doCopy targetDir srcFiles = do
-
-      -- Create parent directories for everything
-      let dirs = map (targetDir </>) . nub . map (takeDirectory . snd) $ srcFiles
-      traverse_ (createDirectoryIfMissing True) dirs
-
-      -- Copy all the files
-      sequence_ [ let src  = srcBase   </> srcFile
-                      dest = targetDir </> srcFile
-                   in doCopy src dest
-                | (srcBase, srcFile) <- srcFiles ]
-
-    -- | List all the files in a directory and all subdirectories.
-    --
-    -- The order places files in sub-directories after all the files in their
-    -- parent directories. The list is generated lazily so is not well defined if
-    -- the source directory structure changes before the list is used.
-    --
-    getDirectoryContentsRecursive :: FilePath -> IO [FilePath]
-    getDirectoryContentsRecursive topdir = recurseDirectories [""]
-      where
-        recurseDirectories :: [FilePath] -> IO [FilePath]
-        recurseDirectories []         = return []
-        recurseDirectories (dir:dirs) = unsafeInterleaveIO $ do
-          (files, dirs') <- collect [] [] =<< getDirectoryContents (topdir </> dir)
-          files' <- recurseDirectories (dirs' ++ dirs)
-          return (files ++ files')
-
-          where
-            collect files dirs' []              = return (reverse files
-                                                         ,reverse dirs')
-            collect files dirs' (entry:entries) | ignore entry
-                                                = collect files dirs' entries
-            collect files dirs' (entry:entries) = do
-              let dirEntry = dir </> entry
-              isDirectory <- doesDirectoryExist (topdir </> dirEntry)
-              if isDirectory
-                then collect files (dirEntry:dirs') entries
-                else collect (dirEntry:files) dirs' entries
-
-            ignore ['.']      = True
-            ignore ['.', '.'] = True
-            ignore _          = False
-
-
 getVersionInfo :: Version
               -> Tool
               -> GHCupDownloads
@@ -979,15 +920,6 @@ getVersionInfo v' tool =
    )


-- Gathering monoidal values
-traverseFold :: (Foldable t, Applicative m, Monoid b) => (a -> m b) -> t a -> m b
-traverseFold f = foldl (\mb a -> (<>) <$> mb <*> f a) (pure mempty)
-
-- | Gathering monoidal values
-forFold :: (Foldable t, Applicative m, Monoid b) => t a -> (a -> m b) -> m b
-forFold = \t -> (`traverseFold` t)
-
-
 -- | The file extension for executables.
 exeExt :: String
 #if defined(IS_WINDOWS)
@@ -996,3 +928,168 @@ exeExt = ".exe"
 exeExt = ""
 #endif

+-- | The file extension for executables.
+exeExt' :: ByteString
+#if defined(IS_WINDOWS)
+exeExt' = ".exe"
+#else
+exeExt' = ""
+#endif
+
+
+-- | Enables ANSI support on windows, does nothing on unix.
+--
+-- Returns 'Left str' on errors and 'Right bool' on success, where
+-- 'bool' markes whether ansi support was already enabled.
+--
+-- This function never crashes.
+--
+-- Rip-off of https://docs.rs/ansi_term/0.12.1/x86_64-pc-windows-msvc/src/ansi_term/windows.rs.html#10-61
+enableAnsiSupport :: IO (Either String Bool)
+#if defined(IS_WINDOWS)
+enableAnsiSupport = handleIO (pure . Left . displayException) $ do
+  -- ref: https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilew
+  -- Using `CreateFileW("CONOUT$", ...)` to retrieve the console handle works correctly even if STDOUT and/or STDERR are redirected
+  h <- createFile "CONOUT$" (gENERIC_WRITE .|. gENERIC_READ)
+    fILE_SHARE_WRITE Nothing oPEN_EXISTING 0 Nothing
+  when (h == iNVALID_HANDLE_VALUE ) $ fail "invalid handle value"
+
+  -- ref: https://docs.microsoft.com/en-us/windows/console/getconsolemode
+  m <- getConsoleMode h
+
+  -- VT processing not already enabled?
+  if ((m .&. eNABLE_VIRTUAL_TERMINAL_PROCESSING) == 0)
+  -- https://docs.microsoft.com/en-us/windows/console/setconsolemode
+  then setConsoleMode h (m .|. eNABLE_VIRTUAL_TERMINAL_PROCESSING)
+    >> pure (Right False)
+  else pure (Right True)
+#else
+enableAnsiSupport = pure (Right True)
+#endif
+
+
+-- | On unix, we can use symlinks, so we just get the
+-- symbolic link target.
+--
+-- On windows, we have to emulate symlinks via shims,
+-- see 'createLink'.
+getLinkTarget :: FilePath -> IO FilePath
+getLinkTarget fp = do
+#if defined(IS_WINDOWS)
+  content <- readFile (dropExtension fp <.> "shim")
+  [p] <- pure . filter ("path = " `isPrefixOf`) . lines $ content
+  pure $ stripNewline $ dropPrefix "path = " p
+#else
+  getSymbolicLinkTarget fp
+#endif
+
+
+-- | Checks whether the path is a link.
+pathIsLink :: FilePath -> IO Bool
+#if defined(IS_WINDOWS)
+pathIsLink fp = doesPathExist (dropExtension fp <.> "shim")
+#else
+pathIsLink = pathIsSymbolicLink
+#endif
+
+
+rmLink :: FilePath -> IO ()
+#if defined(IS_WINDOWS)
+rmLink fp = do
+  hideError doesNotExistErrorType . liftIO . rmFile $ fp
+  hideError doesNotExistErrorType . liftIO . rmFile $ (dropExtension fp <.> "shim")
+#else
+rmLink = hideError doesNotExistErrorType . liftIO . rmFile
+#endif
+
+
+-- | Creates a symbolic link on unix and a fake symlink on windows for
+-- executables, which:
+--     1. is a shim exe
+--     2. has a corresponding .shim file in the same directory that
+--        contains the target
+--
+-- This overwrites previously existing files.
+--
+-- On windows, this requires that 'ensureGlobalTools' was run beforehand.
+createLink :: ( MonadMask m
+              , MonadThrow m
+              , MonadLogger m
+              , MonadIO m
+              , MonadReader AppState m
+              , MonadUnliftIO m
+              , MonadFail m
+              )
+           => FilePath      -- ^ path to the target executable
+           -> FilePath      -- ^ path to be created
+           -> m ()
+createLink link exe = do
+#if defined(IS_WINDOWS)
+  AppState { dirs } <- ask
+  let shimGen = cacheDir dirs </> "gs.exe"
+
+  let shim = dropExtension exe <.> "shim"
+      -- For hardlinks, link needs to be absolute.
+      -- If link is relative, it's relative to the target exe.
+      -- Note that (</>) drops lhs when rhs is absolute.
+      fullLink = takeDirectory exe </> link
+      shimContents = "path = " <> fullLink
+
+  $(logDebug) [i|rm -f #{exe}|]
+  liftIO $ rmLink exe
+
+  $(logDebug) [i|ln -s #{fullLink} #{exe}|]
+  liftIO $ copyFile shimGen exe
+  liftIO $ writeFile shim shimContents
+#else
+  $(logDebug) [i|rm -f #{exe}|]
+  liftIO $ hideError doesNotExistErrorType $ rmFile exe
+
+  $(logDebug) [i|ln -s #{link} #{exe}|]
+  liftIO $ createFileLink link exe
+#endif
+
+
+ensureGlobalTools :: ( MonadMask m
+                     , MonadThrow m
+                     , MonadLogger m
+                     , MonadIO m
+                     , MonadReader AppState m
+                     , MonadUnliftIO m
+                     , MonadFail m
+                     )
+                  => Excepts '[DigestError , DownloadFailed, NoDownload] m ()
+ensureGlobalTools = do
+#if defined(IS_WINDOWS)
+  AppState { ghcupInfo = GHCupInfo _ _ gTools, settings, dirs } <- lift ask
+  shimDownload <- liftE $ lE @_ @'[NoDownload]
+    $ maybe (Left NoDownload) Right $ Map.lookup ShimGen gTools
+  let dl = downloadCached' settings dirs shimDownload (Just "gs.exe")
+  void $ (\(DigestError _ _) -> do
+      lift $ $(logWarn) [i|Digest doesn't match, redownloading gs.exe...|]
+      lift $ $(logDebug) [i|rm -f #{shimDownload}|]
+      liftIO $ hideError doesNotExistErrorType $ rmFile (cacheDir dirs </> "gs.exe")
+      liftE @'[DigestError , DownloadFailed] $ dl
+    ) `catchE` (liftE @'[DigestError , DownloadFailed] dl)
+  pure ()
+#else
+  pure ()
+#endif
+
+
+-- | Ensure ghcup directory structure exists.
+ensureDirectories :: Dirs -> IO ()
+ensureDirectories dirs = do
+  let Dirs
+        { baseDir
+        , binDir
+        , cacheDir
+        , logsDir
+        , confDir
+        } = dirs
+  createDirRecursive' baseDir
+  createDirRecursive' binDir
+  createDirRecursive' cacheDir
+  createDirRecursive' logsDir
+  createDirRecursive' confDir
+  pure ()
--- a/lib/GHCup/Utils.hs-boot
+++ b/lib/GHCup/Utils.hs-boot
@@ -0,0 +1,4 @@
+module GHCup.Utils where
+
+getLinkTarget :: FilePath -> IO FilePath
+pathIsLink :: FilePath -> IO Bool
--- a/lib/GHCup/Utils/Dirs.hs
+++ b/lib/GHCup/Utils/Dirs.hs
@@ -17,6 +17,7 @@ Portability : portable
 -}
 module GHCup.Utils.Dirs
  ( getDirs
+  , ghcupBaseDir
  , ghcupConfigFile
  , ghcupCacheDir
  , ghcupGHCBaseDir
@@ -25,6 +26,10 @@ module GHCup.Utils.Dirs
  , parseGHCupGHCDir
  , relativeSymlink
  , withGHCupTmpDir
+  , getConfigFilePath
+#if !defined(IS_WINDOWS)
+  , useXDG
+#endif
  )
 where

@@ -47,7 +52,9 @@ import           Data.String.Interpolate
 import           GHC.IO.Exception               ( IOErrorType(NoSuchThing) )
 import           Haskus.Utils.Variant.Excepts
 import           Optics
-import           System.Directory
+#if !defined(IS_WINDOWS)
+import           System.Directory                                                
+#endif
 import           System.DiskSpace                                                
 import           System.Environment
 import           System.FilePath
@@ -72,6 +79,10 @@ import Control.Concurrent (threadDelay)
 -- then uses 'XDG_DATA_HOME/ghcup' as per xdg spec.
 ghcupBaseDir :: IO FilePath
 ghcupBaseDir = do
+#if defined(IS_WINDOWS)
+  bdir <- fromMaybe "C:\\" <$> lookupEnv "GHCUP_INSTALL_BASE_PREFIX"
+  pure (bdir </> "ghcup")
+#else
  xdg <- useXDG
  if xdg
    then do
@@ -86,6 +97,7 @@ ghcupBaseDir = do
        Just r  -> pure r
        Nothing -> liftIO getHomeDirectory
      pure (bdir </> ".ghcup")
+#endif


 -- | ~/.ghcup by default
@@ -94,6 +106,9 @@ ghcupBaseDir = do
 -- then uses 'XDG_CONFIG_HOME/ghcup' as per xdg spec.
 ghcupConfigDir :: IO FilePath
 ghcupConfigDir = do
+#if defined(IS_WINDOWS)
+  ghcupBaseDir
+#else
  xdg <- useXDG
  if xdg
    then do
@@ -108,6 +123,7 @@ ghcupConfigDir = do
        Just r  -> pure r
        Nothing -> liftIO getHomeDirectory
      pure (bdir </> ".ghcup")
+#endif


 -- | If 'GHCUP_USE_XDG_DIRS' is set (to anything),
@@ -115,6 +131,9 @@ ghcupConfigDir = do
 -- (which, sadly is not strictly xdg spec).
 ghcupBinDir :: IO FilePath
 ghcupBinDir = do
+#if defined(IS_WINDOWS)
+  ghcupBaseDir <&> (</> "bin")
+#else
  xdg <- useXDG
  if xdg
    then do
@@ -124,6 +143,7 @@ ghcupBinDir = do
          home <- liftIO getHomeDirectory
          pure (home </> ".local" </> "bin")
    else ghcupBaseDir <&> (</> "bin")
+#endif


 -- | Defaults to '~/.ghcup/cache'.
@@ -132,6 +152,9 @@ ghcupBinDir = do
 -- then uses 'XDG_CACHE_HOME/ghcup' as per xdg spec.
 ghcupCacheDir :: IO FilePath
 ghcupCacheDir = do
+#if defined(IS_WINDOWS)
+  ghcupBaseDir <&> (</> "cache")
+#else
  xdg <- useXDG
  if xdg
    then do
@@ -142,6 +165,7 @@ ghcupCacheDir = do
          pure (home </> ".cache")
      pure (bdir </> "ghcup")
    else ghcupBaseDir <&> (</> "cache")
+#endif


 -- | Defaults to '~/.ghcup/logs'.
@@ -150,6 +174,9 @@ ghcupCacheDir = do
 -- then uses 'XDG_CACHE_HOME/ghcup/logs' as per xdg spec.
 ghcupLogsDir :: IO FilePath
 ghcupLogsDir = do
+#if defined(IS_WINDOWS)
+  ghcupBaseDir <&> (</> "logs")
+#else
  xdg <- useXDG
  if xdg
    then do
@@ -160,6 +187,7 @@ ghcupLogsDir = do
          pure (home </> ".cache")
      pure (bdir </> "ghcup" </> "logs")
    else ghcupBaseDir <&> (</> "logs")
+#endif


 getDirs :: IO Dirs
@@ -177,13 +205,16 @@ getDirs = do
    --[ GHCup files ]--
    -------------------

+getConfigFilePath :: (MonadIO m) => m FilePath
+getConfigFilePath = do
+  confDir <- liftIO ghcupConfigDir
+  pure $ confDir </> "config.yaml"

 ghcupConfigFile :: (MonadIO m)
                => Excepts '[JSONError] m UserSettings
 ghcupConfigFile = do
-  confDir <- liftIO ghcupConfigDir
-  let file = confDir </> "config.yaml"
-  contents <- liftIO $ handleIO' NoSuchThing (\_ -> pure Nothing) $ Just <$> BS.readFile file
+  filepath <- getConfigFilePath
+  contents <- liftIO $ handleIO' NoSuchThing (\_ -> pure Nothing) $ Just <$> BS.readFile filepath
  case contents of
      Nothing -> pure defaultUserSettings
      Just contents' -> lE' JSONDecodeError . first show . Y.decodeEither' $ contents'
@@ -242,7 +273,7 @@ mkGhcupTmpDir = do


 withGHCupTmpDir :: (MonadUnliftIO m, MonadLogger m, MonadCatch m, MonadResource m, MonadThrow m, MonadIO m) => m FilePath
-withGHCupTmpDir = snd <$> withRunInIO (\run -> run $ allocate (run mkGhcupTmpDir) removeDirectoryRecursive)
+withGHCupTmpDir = snd <$> withRunInIO (\run -> run $ allocate (run mkGhcupTmpDir) rmPath)



@@ -252,8 +283,10 @@ withGHCupTmpDir = snd <$> withRunInIO (\run -> run $ allocate (run mkGhcupTmpDir
    --------------


+#if !defined(IS_WINDOWS)
 useXDG :: IO Bool
 useXDG = isJust <$> lookupEnv "GHCUP_USE_XDG_DIRS"
+#endif


 relativeSymlink :: FilePath  -- ^ the path in which to create the symlink
--- a/lib/GHCup/Utils/File/Common.hs
+++ b/lib/GHCup/Utils/File/Common.hs
@@ -8,7 +8,6 @@ module GHCup.Utils.File.Common where

 import           GHCup.Utils.Prelude

-import           Control.Exception
 import           Control.Monad.Extra
 import           Control.Monad.Reader
 import           Data.Maybe
@@ -17,7 +16,6 @@ import           GHC.IO.Exception
 import           Optics                  hiding ((<|), (|>))
 import           System.Directory
 import           System.FilePath
-import           System.IO.Error
 import           Text.PrettyPrint.HughesPJClass hiding ( (<>) )
 import           Text.Regex.Posix

@@ -106,17 +104,3 @@ findFiles path regex = do
  contents <- listDirectory path
  pure $ filter (match regex) contents

-
-isBrokenSymlink :: FilePath -> IO Bool
-isBrokenSymlink fp = do
-  try (pathIsSymbolicLink fp) >>= \case
-    Right True -> do
-      let symDir = takeDirectory fp
-      tfp <- getSymbolicLinkTarget fp
-      not <$> doesPathExist
-        -- this drops 'symDir' if 'tfp' is absolute
-        (symDir </> tfp)
-    Right b -> pure b
-    Left e | isDoesNotExistError e -> pure False
-           | otherwise -> throwIO e
-
--- a/lib/GHCup/Utils/File/Posix.hs
+++ b/lib/GHCup/Utils/File/Posix.hs
@@ -42,6 +42,7 @@ import           System.Console.Pretty   hiding ( Pretty )
 import           System.Console.Regions
 import           System.IO.Error
 import           System.FilePath
+import           System.Directory
 import           System.Posix.Directory
 import           System.Posix.Files
 import           System.Posix.IO
@@ -63,11 +64,12 @@ import qualified "unix-bytestring" System.Posix.IO.ByteString

 -- | Execute the given command and collect the stdout, stderr and the exit code.
 -- The command is run in a subprocess.
-executeOut :: FilePath          -- ^ command as filename, e.g. 'ls'
+executeOut :: MonadIO m
+           => FilePath          -- ^ command as filename, e.g. 'ls'
           -> [String]          -- ^ arguments to the command
           -> Maybe FilePath    -- ^ chdir to this path
-           -> IO CapturedProcess
-executeOut path args chdir = captureOutStreams $ do
+           -> m CapturedProcess
+executeOut path args chdir = liftIO $ captureOutStreams $ do
  maybe (pure ()) changeWorkingDirectory chdir
  SPP.executeFile path True args Nothing

@@ -316,12 +318,13 @@ createRegularFileFd fm dest =


 -- | Thin wrapper around `executeFile`.
-exec :: String           -- ^ thing to execute
+exec :: MonadIO m
+     => String           -- ^ thing to execute
     -> [String]         -- ^ args for the thing
     -> Maybe FilePath   -- ^ optionally chdir into this
     -> Maybe [(String, String)] -- ^ optional environment
-     -> IO (Either ProcessError ())
-exec exe args chdir env = do
+     -> m (Either ProcessError ())
+exec exe args chdir env = liftIO $ do
  pid <- SPP.forkProcess $ do
    maybe (pure ()) changeWorkingDirectory chdir
    SPP.executeFile exe (not ("./" `isPrefixOf` exe)) args env
@@ -366,3 +369,18 @@ newFilePerms =
    `unionFileModes` groupReadMode
    `unionFileModes` otherWriteMode
    `unionFileModes` otherReadMode
+
+
+-- | Checks whether the binary is a broken link.
+isBrokenSymlink :: FilePath -> IO Bool
+isBrokenSymlink fp = do
+  try (pathIsSymbolicLink fp) >>= \case
+    Right True -> do
+      let symDir = takeDirectory fp
+      tfp <- getSymbolicLinkTarget fp
+      not <$> doesPathExist
+        -- this drops 'symDir' if 'tfp' is absolute
+        (symDir </> tfp)
+    Right b -> pure b
+    Left e | isDoesNotExistError e -> pure False
+           | otherwise -> throwIO e
--- a/lib/GHCup/Utils/File/Windows.hs
+++ b/lib/GHCup/Utils/File/Windows.hs
@@ -15,6 +15,8 @@ Some of these functions use sophisticated logging.
 -}
 module GHCup.Utils.File.Windows where

+import {-# SOURCE #-} GHCup.Utils ( getLinkTarget, pathIsLink )
+import           GHCup.Utils.Dirs
 import           GHCup.Utils.File.Common
 import           GHCup.Types

@@ -23,10 +25,12 @@ import           Control.DeepSeq
 import           Control.Exception.Safe
 import           Control.Monad
 import           Control.Monad.Reader
+import           Data.List
 import           Foreign.C.Error
 import           GHC.IO.Exception
 import           GHC.IO.Handle
 import           System.Directory
+import           System.Environment
 import           System.FilePath
 import           System.IO
 import           System.Process
@@ -34,6 +38,7 @@ import           System.Process
 import qualified Control.Exception             as EX
 import qualified Data.ByteString               as BS
 import qualified Data.ByteString.Lazy          as BL
+import qualified Data.Map.Strict               as Map



@@ -63,7 +68,7 @@ readCreateProcessWithExitCodeBS cp input = do
                    std_out = CreatePipe,
                    std_err = CreatePipe
                  }
-    withCreateProcess_ "readCreateProcessWithExitCode" cp_opts $
+    withCreateProcess_ "readCreateProcessWithExitCodeBS" cp_opts $
      \mb_inh mb_outh mb_errh ph ->
        case (mb_inh, mb_outh, mb_errh) of
          (Just inh, Just outh, Just errh) -> do
@@ -130,12 +135,14 @@ withForkWait async' body = do

 -- | Execute the given command and collect the stdout, stderr and the exit code.
 -- The command is run in a subprocess.
-executeOut :: FilePath          -- ^ command as filename, e.g. 'ls'
+executeOut :: MonadIO m
+           => FilePath          -- ^ command as filename, e.g. 'ls'
           -> [String]          -- ^ arguments to the command
           -> Maybe FilePath    -- ^ chdir to this path
-           -> IO CapturedProcess
+           -> m CapturedProcess
 executeOut path args chdir = do
-  (exit, out, err) <- readCreateProcessWithExitCodeBS (proc path args){ cwd = chdir } ""
+  cp <- createProcessWithMingwPath ((proc path args){ cwd = chdir })
+  (exit, out, err) <- liftIO $ readCreateProcessWithExitCodeBS cp ""
  pure $ CapturedProcess exit out err


@@ -150,15 +157,16 @@ execLogged exe args chdir lfile env = do
  AppState { dirs = Dirs {..} } <- ask
  let stdoutLogfile = logsDir </> lfile <> ".stdout.log"
      stderrLogfile = logsDir </> lfile <> ".stderr.log"
+  cp <- createProcessWithMingwPath ((proc exe args)
+    { cwd = chdir
+    , env = env
+    , std_in = CreatePipe
+    , std_out = CreatePipe
+    , std_err = CreatePipe
+    })
  fmap (toProcessError exe args)
    $ liftIO
-    $ withCreateProcess
-        (proc exe args){ cwd = chdir
-                       , env = env
-                       , std_in = CreatePipe
-                       , std_out = CreatePipe
-                       , std_err = CreatePipe
-        }
+    $ withCreateProcess cp
    $ \_ mout merr ph ->
        case (mout, merr) of
          (Just cStdout, Just cStderr) -> do
@@ -184,15 +192,15 @@ execLogged exe args chdir lfile env = do
        

 -- | Thin wrapper around `executeFile`.
-exec :: FilePath       -- ^ thing to execute
+exec :: MonadIO m
+     => FilePath       -- ^ thing to execute
     -> [FilePath]     -- ^ args for the thing
     -> Maybe FilePath   -- ^ optionally chdir into this
     -> Maybe [(String, String)] -- ^ optional environment
-     -> IO (Either ProcessError ())
+     -> m (Either ProcessError ())
 exec exe args chdir env = do
-  exit_code <- withCreateProcess
-                 (proc exe args) { cwd = chdir, env = env } $ \_ _ _ p ->
-                 waitForProcess p
+  cp <- createProcessWithMingwPath ((proc exe args) { cwd = chdir, env = env })
+  exit_code <- liftIO $ withCreateProcess cp $ \_ _ _ p -> waitForProcess p
  pure $ toProcessError exe args exit_code


@@ -200,3 +208,40 @@ chmod_755 :: MonadIO m => FilePath -> m ()
 chmod_755 fp =
  let perm = setOwnerWritable True emptyPermissions
  in liftIO $ setPermissions fp perm
+
+
+createProcessWithMingwPath :: MonadIO m
+                          => CreateProcess
+                          -> m CreateProcess
+createProcessWithMingwPath cp = do
+  msys2Dir <- liftIO ghcupMsys2Dir
+  cEnv <- Map.fromList <$> maybe (liftIO getEnvironment) pure (env cp)
+  let mingWPaths = [msys2Dir </> "usr" </> "bin"
+                   ,msys2Dir </> "mingw64" </> "bin"]
+      paths = ["PATH", "Path"]
+      curPaths = (\x -> maybe [] splitSearchPath (Map.lookup x cEnv)) =<< paths
+      newPath = intercalate [searchPathSeparator] (mingWPaths ++ curPaths)
+      envWithoutPath = foldr (\x y -> Map.delete x y) cEnv paths
+      envWithNewPath = Map.insert "Path" newPath envWithoutPath
+  liftIO $ setEnv "Path" newPath
+  pure $ cp { env = Just $ Map.toList envWithNewPath }
+
+ghcupMsys2Dir :: IO FilePath
+ghcupMsys2Dir =
+  lookupEnv "GHCUP_MSYS2" >>= \case
+    Just fp -> pure fp
+    Nothing -> do
+      baseDir <- liftIO ghcupBaseDir
+      pure (baseDir </> "msys64")
+
+-- | Checks whether the binary is a broken link.
+isBrokenSymlink :: FilePath -> IO Bool
+isBrokenSymlink fp = do
+  b <- pathIsLink fp
+  if b
+  then do
+    tfp <- getLinkTarget fp
+    not <$> doesPathExist
+      -- this drops 'symDir' if 'tfp' is absolute
+      (takeDirectory fp </> tfp)
+  else pure False
--- a/lib/GHCup/Utils/Logger.hs
+++ b/lib/GHCup/Utils/Logger.hs
@@ -14,17 +14,15 @@ Here we define our main logger.
 -}
 module GHCup.Utils.Logger where

-import           GHCup.Types
 import           GHCup.Utils.File
 import           GHCup.Utils.String.QQ

 import           Control.Monad
 import           Control.Monad.IO.Class
-import           Control.Monad.Reader
 import           Control.Monad.Logger
+import           Data.Char               ( ord )
 import           Prelude                 hiding ( appendFile )
 import           System.Console.Pretty
-import           System.Directory        hiding ( findFiles )
 import           System.FilePath
 import           System.IO.Error
 import           Text.Regex.Posix
@@ -46,20 +44,33 @@ myLoggerT LoggerConfig {..} loggingt = runLoggingT loggingt mylogger
  mylogger :: Loc -> LogSource -> LogLevel -> LogStr -> IO ()
  mylogger _ _ level str' = do
    -- color output
+    let style' = case level of
+          LevelDebug   -> style Bold . color Blue
+          LevelInfo    -> style Bold . color Green
+          LevelWarn    -> style Bold . color Yellow
+          LevelError   -> style Bold . color Red
+          LevelOther _ -> id
    let l = case level of
-          LevelDebug   -> toLogStr (style Bold $ color Blue "[ Debug ]")
-          LevelInfo    -> toLogStr (style Bold $ color Green "[ Info  ]")
-          LevelWarn    -> toLogStr (style Bold $ color Yellow "[ Warn  ]")
-          LevelError   -> toLogStr (style Bold $ color Red "[ Error ]")
+          LevelDebug   -> toLogStr (style' "[ Debug ]")
+          LevelInfo    -> toLogStr (style' "[ Info  ]")
+          LevelWarn    -> toLogStr (style' "[ Warn  ]")
+          LevelError   -> toLogStr (style' "[ Error ]")
          LevelOther t -> toLogStr "[ " <> toLogStr t <> toLogStr " ]"
-    let out = fromLogStr (l <> toLogStr " " <> str' <> toLogStr "\n")
+    let strs = fmap toLogStr . B.split (fromIntegral $ ord '\n') . fromLogStr $ str'
+    let out = case strs of
+                [] -> B.empty
+                (x:xs) -> fromLogStr
+                  . foldr (\a b -> a <> toLogStr "\n" <> b) mempty
+                  . ((l <> toLogStr " " <> x) :)
+                  . fmap (\line' -> toLogStr (style' "[ ...   ] ") <> line' )
+                  $ xs

    when (lcPrintDebug || (not lcPrintDebug && (level /= LevelDebug)))
      $ colorOutter out

    -- raw output
    let lr = case level of
-          LevelDebug   -> toLogStr "Debug: "
+          LevelDebug   -> toLogStr "Debug:"
          LevelInfo    -> toLogStr "Info:"
          LevelWarn    -> toLogStr "Warn:"
          LevelError   -> toLogStr "Error:"
@@ -68,19 +79,17 @@ myLoggerT LoggerConfig {..} loggingt = runLoggingT loggingt mylogger
    rawOutter outr


-initGHCupFileLogging :: (MonadIO m, MonadReader AppState m) => m FilePath
-initGHCupFileLogging = do
-  AppState {dirs = Dirs {..}} <- ask
+initGHCupFileLogging :: (MonadIO m) => FilePath -> m FilePath
+initGHCupFileLogging logsDir = do
  let logfile = logsDir </> "ghcup.log"
  liftIO $ do
-    createDirectoryIfMissing True logsDir
    logFiles <- findFiles
      logsDir
      (makeRegexOpts compExtended
                     execBlank
                     ([s|^.*\.log$|] :: B.ByteString)
      )
-    forM_ logFiles $ hideError doesNotExistErrorType . removeFile . (logsDir </>)
+    forM_ logFiles $ hideError doesNotExistErrorType . rmFile . (logsDir </>)

    writeFile logfile ""
    pure logfile
--- a/lib/GHCup/Utils/Prelude.hs
+++ b/lib/GHCup/Utils/Prelude.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP                 #-}
 {-# LANGUAGE DataKinds           #-}
 {-# LANGUAGE FlexibleContexts    #-}
 {-# LANGUAGE FlexibleInstances   #-}
@@ -25,6 +26,8 @@ import           Control.Monad.IO.Class
 import           Control.Monad.Trans.Class      ( lift )
 import           Data.Bifunctor
 import           Data.ByteString                ( ByteString )
+import           Data.List                      ( nub )
+import           Data.Foldable
 import           Data.String
 import           Data.Text                      ( Text )
 import           Data.Versions
@@ -32,6 +35,15 @@ import           Data.Word8
 import           Haskus.Utils.Types.List
 import           Haskus.Utils.Variant.Excepts
 import           System.IO.Error
+import           System.IO.Unsafe
+import           System.Directory
+import           System.FilePath
+
+#if defined(IS_WINDOWS)
+import           Control.Retry
+import           GHC.IO.Exception
+#endif
+
 import qualified Data.ByteString               as B
 import qualified Data.ByteString.Lazy          as L
 import qualified Data.Strict.Maybe             as S
@@ -178,14 +190,14 @@ hideError :: (MonadIO m, MonadCatch m) => IOErrorType -> m () -> m ()
 hideError err = handleIO (\e -> if err == ioeGetErrorType e then pure () else liftIO . ioError $ e)


-hideErrorDef :: [IOErrorType] -> a -> IO a -> IO a
+hideErrorDef :: (MonadIO m, MonadCatch m) => [IOErrorType] -> a -> m a -> m a
 hideErrorDef errs def =
-  handleIO (\e -> if ioeGetErrorType e `elem` errs then pure def else ioError e)
+  handleIO (\e -> if ioeGetErrorType e `elem` errs then pure def else liftIO $ ioError e)


-hideErrorDefM :: [IOErrorType] -> IO a -> IO a -> IO a
+hideErrorDefM :: (MonadIO m, MonadCatch m) => [IOErrorType] -> m a -> m a -> m a
 hideErrorDefM errs def =
-  handleIO (\e -> if ioeGetErrorType e `elem` errs then def else ioError e)
+  handleIO (\e -> if ioeGetErrorType e `elem` errs then def else liftIO $ ioError e)


 -- TODO: does this work?
@@ -276,3 +288,140 @@ escapeVerRex = B.pack . go . B.unpack . verToBS
  go (x : xs) | x == _period = [_backslash, _period] ++ go xs
              | otherwise    = x : go xs

+-- | More permissive version of 'createDirRecursive'. This doesn't
+-- error when the destination is a symlink to a directory.
+createDirRecursive' :: FilePath -> IO ()
+createDirRecursive' p =
+  handleIO (\e -> if isAlreadyExistsError e then isSymlinkDir e else throwIO e)
+    . createDirectoryIfMissing True
+    $ p
+
+ where
+  isSymlinkDir e = do
+    ft <- pathIsSymbolicLink p
+    case ft of
+      True -> do
+        rp <- canonicalizePath p
+        rft <- doesDirectoryExist rp
+        case rft of
+          True -> pure ()
+          _ -> throwIO e
+      _ -> throwIO e
+
+
+-- | Recursively copy the contents of one directory to another path.
+--
+-- This is a rip-off of Cabal library.
+copyDirectoryRecursive :: FilePath -> FilePath -> IO ()
+copyDirectoryRecursive srcDir destDir = do
+  srcFiles <- getDirectoryContentsRecursive srcDir
+  copyFilesWith copyFile destDir [ (srcDir, f)
+                                   | f <- srcFiles ]
+  where
+    -- | Common implementation of 'copyFiles', 'installOrdinaryFiles',
+    -- 'installExecutableFiles' and 'installMaybeExecutableFiles'.
+    copyFilesWith :: (FilePath -> FilePath -> IO ())
+                  -> FilePath -> [(FilePath, FilePath)] -> IO ()
+    copyFilesWith doCopy targetDir srcFiles = do
+
+      -- Create parent directories for everything
+      let dirs = map (targetDir </>) . nub . map (takeDirectory . snd) $ srcFiles
+      traverse_ (createDirectoryIfMissing True) dirs
+
+      -- Copy all the files
+      sequence_ [ let src  = srcBase   </> srcFile
+                      dest = targetDir </> srcFile
+                   in doCopy src dest
+                | (srcBase, srcFile) <- srcFiles ]
+
+
+-- | List all the files in a directory and all subdirectories.
+--
+-- The order places files in sub-directories after all the files in their
+-- parent directories. The list is generated lazily so is not well defined if
+-- the source directory structure changes before the list is used.
+--
+getDirectoryContentsRecursive :: FilePath -> IO [FilePath]
+getDirectoryContentsRecursive topdir = recurseDirectories [""]
+  where
+    recurseDirectories :: [FilePath] -> IO [FilePath]
+    recurseDirectories []         = return []
+    recurseDirectories (dir:dirs) = unsafeInterleaveIO $ do
+      (files, dirs') <- collect [] [] =<< getDirectoryContents (topdir </> dir)
+      files' <- recurseDirectories (dirs' ++ dirs)
+      return (files ++ files')
+
+      where
+        collect files dirs' []              = return (reverse files
+                                                     ,reverse dirs')
+        collect files dirs' (entry:entries) | ignore entry
+                                            = collect files dirs' entries
+        collect files dirs' (entry:entries) = do
+          let dirEntry = dir </> entry
+          isDirectory <- doesDirectoryExist (topdir </> dirEntry)
+          if isDirectory
+            then collect files (dirEntry:dirs') entries
+            else collect (dirEntry:files) dirs' entries
+
+        ignore ['.']      = True
+        ignore ['.', '.'] = True
+        ignore _          = False
+
+-- https://github.com/haskell/directory/issues/110
+-- https://github.com/haskell/directory/issues/96
+-- https://www.sqlite.org/src/info/89f1848d7f
+rmPath :: (MonadIO m, MonadMask m)
+      => FilePath
+      -> m ()
+rmPath fp =
+#if defined(IS_WINDOWS)
+  recovering (fullJitterBackoff 25000 <> limitRetries 10)
+    [\_ -> Handler (\e -> pure $ isPermissionError e)
+    ,\_ -> Handler (\e -> pure (ioeGetErrorType e == UnsatisfiedConstraints))
+    ,\_ -> Handler (\e -> pure (ioeGetErrorType e == InappropriateType))
+    ]
+    (\_ -> liftIO $ removePathForcibly fp)
+#else
+  liftIO $ removeDirectoryRecursive fp
+#endif
+
+
+-- https://www.sqlite.org/src/info/89f1848d7f
+-- https://github.com/haskell/directory/issues/96
+rmFile :: (MonadIO m, MonadMask m)
+      => FilePath
+      -> m ()
+rmFile fp =
+#if defined(IS_WINDOWS)
+  recovering (fullJitterBackoff 25000 <> limitRetries 10)
+    [\_ -> Handler (\e -> pure $ isPermissionError e)
+    ,\_ -> Handler (\e -> pure (ioeGetErrorType e == UnsatisfiedConstraints))
+    ]
+    (\_ -> liftIO $ removeFile fp)
+#else
+  liftIO $ removeFile fp
+#endif
+
+
+-- Gathering monoidal values
+traverseFold :: (Foldable t, Applicative m, Monoid b) => (a -> m b) -> t a -> m b
+traverseFold f = foldl (\mb a -> (<>) <$> mb <*> f a) (pure mempty)
+
+-- | Gathering monoidal values
+forFold :: (Foldable t, Applicative m, Monoid b) => t a -> (a -> m b) -> m b
+forFold = \t -> (`traverseFold` t)
+
+
+-- | Strip @\\r@ and @\\n@ from 'ByteString's
+stripNewline :: String -> String
+stripNewline s
+  | null s               = []
+  | head s `elem` "\n\r" = stripNewline (tail s)
+  | otherwise            = head s : stripNewline (tail s)
+
+
+isNewLine :: Word8 -> Bool
+isNewLine w
+  | w == _lf = True
+  | w == _cr = True
+  | otherwise = False
--- a/lib/GHCup/Version.hs
+++ b/lib/GHCup/Version.hs
@@ -25,7 +25,7 @@ import qualified Data.Text                     as T

 -- | This reflects the API version of the YAML.
 ghcupURL :: URI
-ghcupURL = [uri|https://www.haskell.org/ghcup/data/ghcup-0.0.4.yaml|]
+ghcupURL = [uri|https://www.haskell.org/ghcup/data/ghcup-0.0.5.yaml|]

 -- | The current ghcup version.
 ghcUpVer :: PVP
--- a/refreeze.sh
+++ b/refreeze.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+set -xue
+
+rm -f cabal.*.project
+rm -f cabal.*.project.freeze
+
+for ghc_ver in "$@" ; do
+	# shellcheck disable=SC3060
+	project_file=cabal.ghc${ghc_ver//./}.project
+
+	cp cabal.project "${project_file}"
+	case "$(uname -s)" in
+        MSYS*|MINGW*)
+			cabal freeze --project-file="${project_file}" -w "ghc-${ghc_ver}"
+			;;
+		*)
+			cabal freeze --project-file="${project_file}" -w "ghc-${ghc_ver}" -ftui -finternal-downloader
+			;;
+	esac
+
+
+	echo "" >> "${project_file}"
+	echo "with-compiler: ghc-${ghc_ver}" >> "${project_file}"
+
+	sed -i -e '/ghcup/d' "${project_file}".freeze
+done
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
-resolver: lts-17.11
+resolver: lts-18.2

 packages:
  - .
@@ -12,6 +12,7 @@ extra-deps:

  - IfElse-0.85@sha256:6939b94acc6a55f545f63a168a349dd2fbe4b9a7cca73bf60282db5cc6aa47d2,445
  - ascii-string-1.0.1.4@sha256:fa34f1d9ba57e8e89c0d4c9cef5e01ba32cb2d4373d13f92dcc0b531a6c6749b,2582
+  - base16-bytestring-0.1.1.7@sha256:0021256a9628971c08da95cb8f4d0d72192f3bb8a7b30b55c080562d17c43dd3,2231
  - brotli-0.0.0.0@sha256:2bf383a4cd308745740986be0b18381c5a0784393fe69b91456aacb2d603de46,2964
  - brotli-streams-0.0.0.0@sha256:1af1e22f67b8bfd6ad0d05e61825e7a178d738f689ebbb21c1aab5f1bbcae176,2331
  - chs-cabal-0.1.1.0@sha256:20ec6a9fb5ab6991f1a4adf157c537bd5d3b98d08d3c09c387c954c7c50bd011,1153
@@ -20,23 +21,24 @@ extra-deps:
  - haskus-utils-data-1.3@sha256:f62c4e49021b463185d043f7b69c727b63af641a71d7edd582d9f4f98e80e500,1466
  - haskus-utils-types-1.5.1@sha256:991c472f4e751e2f0d7aab6ad4220ef151d6160876dcf0511bbf876bbd432020,1298
  - haskus-utils-variant-3.0@sha256:8d51e45d3b664e61ccc25a58b37c0ccc4ee7537138b9fee21cd15c356906dd34,2159
-  - http-io-streams-0.1.6.0@sha256:53f5bab177efb52cd65ec396fd04ed59b93e5f919fb3700cd7dacd6cfce6f06d,3582
  - hpath-filepath-0.10.4@sha256:e9e44fb5fdbade7f30b5b5451257dbee15b6ef1aae4060034d73008bb3b5d878,1269
  - hpath-posix-0.13.3@sha256:abe472cf16bccd3a8b8814865ed3551a728fde0f3a2baea2acc03023bec6c565,1615
  - hspec-2.7.10@sha256:c9e82c90086acebac576552a06f3cabd249bba048edd1667c7fae0b1313d5bce,1712
  - hspec-core-2.7.10@sha256:2aba6ea126442b29e8183ab27f1c811706b19b1d83b02f193a896f6fc1589d13,4621
  - hspec-discover-2.7.10@sha256:d08bf5dd785629f589571477d9beb7cd91529471bd89f39517c1cb4b9b38160f,2184
  - hspec-golden-aeson-0.9.0.0@sha256:aa17274114026661ba4dfc9c60c230673c8f408bd86482fd611d2d5cb6aff996,2179
-  - lzma-static-5.2.5.2@sha256:ac38dcad9ab423342a72ba48415bd75f62234e9c9e11831495b75603b5a060f6,7184
+  - http-io-streams-0.1.6.0@sha256:53f5bab177efb52cd65ec396fd04ed59b93e5f919fb3700cd7dacd6cfce6f06d,3582
  - libarchive-3.0.2.1@sha256:40ebf2a278e585802427bc58826867208bb33822f63d56107a1fcc3ca04d691d,10990
+  - lzma-static-5.2.5.3@sha256:2758ee58c35992fcf7db78e98684c357a16a82fa2a4e7c352a6c210c08c555d8,7308
  - os-release-1.0.1@sha256:1281c62081f438fc3f0874d3bae6a4887d5964ac25261ba06e29d368ab173467,2716
-  - primitive-0.7.0.1@sha256:a381571c36edc7dca28b77fe8159b43c14c640087ec5946adacf949feec64231,3433
+  - primitive-0.7.1.0@sha256:29de6bfd0cf8ba023ceb806203dfbec0e51e3524e75ffe41056f70b4229c6f0f,2728
  - regex-posix-clib-2.7
  - streamly-0.7.3@sha256:ad2a488fe802692ed47cab9fd0416c2904aac9e51cf2d8aafd1c3a40064c42f5,27421
  - streamly-bytestring-0.1.2@sha256:cc828f41d1c714c711d38fb213b4ed186febabba598ab080e13255f69c20b13c,2469
  - streamly-posix-0.1.0.1@sha256:5d89b806281035d34020387ed99dde1ddab282c7ed66df3b7cd010b38fd3517b,2138
  - strict-base-0.4.0.0@sha256:2ff4e43cb95eedf2995558d7fc34d19362846413dd39e6aa6a5b3ea8228fef9f,1248
  - xor-0.0.1.0@sha256:f8362b4a68562b9afbcd727ff64c1a303970df3a032e0033d2f4c094c3501df3,2243
+  - zip-1.7.1@sha256:0ce03d0fbffba47c1ab6fbb9166f8ba5373d828d78587df21b7e9d7bb150f929,3918

 flags:
  http-io-streams:
--- a/test/GHCup/ArbitraryTypes.hs
+++ b/test/GHCup/ArbitraryTypes.hs
@@ -171,6 +171,10 @@ instance Arbitrary Tool where
  arbitrary = genericArbitrary
  shrink    = genericShrink

+instance Arbitrary GlobalTool where
+  arbitrary = genericArbitrary
+  shrink    = genericShrink
+
 instance Arbitrary GHCupInfo where
  arbitrary = genericArbitrary
  shrink    = genericShrink
--- a/www/ghcup.css
+++ b/www/ghcup.css
@@ -132,13 +132,17 @@ hr {
    margin-bottom: 2em;
 }

-#platform-instructions-linux > div > pre,
-#platform-instructions-mac > div > pre,
-#platform-instructions-freebsd > div > pre,
-#platform-instructions-win32 > div > pre,
-#platform-instructions-win64 > div > pre,
-#platform-instructions-default > div > div > pre,
-#platform-instructions-unknown > div > div > pre {
+span.code {
+	font-family: 'Lucida Console', monospace;
+}
+
+#platform-instructions-linux div > pre,
+#platform-instructions-mac div > pre,
+#platform-instructions-freebsd div > pre,
+#platform-instructions-win32 div > pre,
+#platform-instructions-win64 div > pre,
+#platform-instructions-default div > div > pre,
+#platform-instructions-unknown div > div > pre {
    background-color: #515151;
    color: white;
    margin-left: auto;
--- a/www/ghcup.js
+++ b/www/ghcup.js
@@ -158,8 +158,8 @@ function copyToClipboard() {
  document.body.removeChild(el);
 }

-function copyToClipboardSilicon() {
-  const text = document.getElementById("ghcup-command-silicon").innerText;
+function copyToClipboardPowershell() {
+  const text = document.getElementById("ghcup-command-powershell").innerText;
  const el = document.createElement('textarea');
  el.value = text;
  document.body.appendChild(el);
--- a/www/index.html
+++ b/www/index.html
@@ -14,7 +14,6 @@

  <body id="idx">

-    <script id='html-content' type="text/html">
      <a id="platform-button" style="display: none;" href="#">
        click or press "n" to cycle platforms
      </a>
@@ -32,10 +31,7 @@

      <div id="platform-instructions-mac" class="instructions" style="display: none;">
        <p>Run the following in your terminal (as a user other than root), then follow the onscreen instructions.</p>
-		<p>On Intel:</p>
 		<div class="command-button"><pre><span class='ghcup-command' id="ghcup-command-normal">curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
-        <p>On Apple Silicon:</p>
-		<div class="command-button"><pre><span class='ghcup-command' id="ghcup-command-silicon">curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | arch -x86_64 /bin/bash</span></pre><button class="tooltip" onclick="copyToClipboardSilicon()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
        <p class="other-help">If you don't like curl | sh, see <a href="https://gitlab.haskell.org/haskell/ghcup-hs#manual-install">other installation methods</a>.<br/>You appear to be running macOS. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
      </div>

@@ -47,24 +43,41 @@

      <div id="platform-instructions-win32" class="instructions">
        <p>
-          To install Haskell, follow the instructions on
-          <a class="windows-download" href="https://www.haskell.org/platform/#windows">Haskell Platform</a>
-		<p>If you're a Windows Subsystem for Linux user run the following in your terminal, then follow the onscreen instructions to install Haskell.
+            To install Haskell,<br/>run the following in a powershell session (as a non-admin user).
+			<div>
+			<div class="command-button"><pre><span class='ghcup-command' id="ghcup-command-powershell">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 $true</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button>
+			</div>
+				<p class="other-help">If you want to run a non-interactive installation, change <span class='code'>$true</span> to <span class='code'>$false</span> at the end of the script.</p>
+			</div>
+		<p>If you're a Windows Subsystem 2 for Linux user run the following in your terminal, then follow the onscreen instructions to install Haskell.
 		</p>
-		<div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
+		<div>
+		<div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button>
+		</div>
+		<p class="other-help">WSL1 does not work with ghcup, follow  <a href="https://docs.microsoft.com/en-us/windows/wsl/install-win10">the instructions here</a> to upgrade to WSL2 if needed.</p>
+		</div>
        </p>
-        <p class="other-help">You appear to be running Windows 32-bit. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
+        <hr/>
+		<p class="other-help">You appear to be running Windows 32-bit. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
      </div>

      <div id="platform-instructions-win64" class="instructions" style="display: none;">
        <p>
-          To install Haskell, follow the instructions on
-          <a class="windows-download" href="https://www.haskell.org/platform/#windows">Haskell Platform</a>
+            To install Haskell,<br/>run the following in a powershell session (as a non-admin user).
+			<div>
+			<div class="command-button"><pre><span class='ghcup-command'>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 $true</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button>
+			</div>
+				<p class="other-help">If you want to run an interactive installation, change <span class='code'>$true</span> to <span class='code'>$false</span> at the end of the script.</p>
+			</div>
        </p>
-		<p>If you're a Windows Subsystem for Linux user run the following in your terminal, then follow the onscreen instructions to install Haskell.
+		<p>If you're a Windows Subsystem 2 for Linux user run the following in your terminal, then follow the onscreen instructions to install Haskell.
 		</p>
-		<div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
-        <p class="other-help">You appear to be running Windows 64-bit. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
+		<div>
+		<div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button>
+		</div>
+		<p class="other-help">WSL1 does not work with ghcup, follow  <a href="https://docs.microsoft.com/en-us/windows/wsl/install-win10">the instructions here</a> to upgrade to WSL2 if needed.</p>
+		</div>
+		<p class="other-help">You appear to be running Windows 64-bit. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
      </div>

      <div id="platform-instructions-unknown" class="instructions" style="display: none;">
@@ -86,7 +99,7 @@

        <!-- duplicate the default cross-platform instructions -->
        <div>
-          <p>If you are running Linux, macOS, FreeBSD or Windows Subsystem for Linux, run the following in your terminal (as a user other than root), then follow the onscreen instructions.</p>
+          <p>If you are running Linux, macOS, FreeBSD or Windows Subsystem 2 for Linux, run the following in your terminal (as a user other than root), then follow the onscreen instructions.</p>
 		  <div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
          <p class="other-help">If you don't like curl | sh, see <a href="https://gitlab.haskell.org/haskell/ghcup-hs#manual-install">other installation methods</a>.</p>
        </div>
@@ -95,8 +108,8 @@

        <div>
          <p>
-            If you are running Windows,<br/>follow the instructions on
-            <a class="windows-download" href="https://www.haskell.org/platform/#windows">Haskell Platform</a>
+            If you are running Windows,<br/>run the following in a powershell session (as a non-admin user).
+			<div class="command-button"><pre><span class='ghcup-command'>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</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
          </p>
        </div>

@@ -104,11 +117,9 @@

      <div id="platform-instructions-default" class="instructions">
        <div>
-          <p>To install Haskell, if you are running Linux, macOS (on Intel), FreeBSD or Windows Subsystem for Linux, run the following
+          <p>To install Haskell, if you are running Linux, macOS, FreeBSD or Windows Subsystem 2 for Linux, run the following
          in your terminal (as a user other than root), then follow the onscreen instructions.</p>
 		  <div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
-          <p>For macOS on Apple Silicon, run this instead:</p>
-          <div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | arch -x86_64 /bin/bash</span></pre><button class="tooltip" onclick="copyToClipboardSilicon()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
          <p class="other-help">If you don't like curl | sh, see <a href="https://gitlab.haskell.org/haskell/ghcup-hs#manual-install">other installation methods</a>.</p>
        </div>

@@ -116,15 +127,15 @@

        <div>
          <p>
-            If you are running Windows,<br/>follow the instructions on
-            <a class="windows-download" href="https://www.haskell.org/platform/#windows">Haskell Platform</a>
+            If you are running Windows,<br/>run the following in a powershell session (as a non-admin user).
+			<div class="command-button"><pre><span class='ghcup-command'>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</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
          </p>
        </div>

      </div>

      <p>
-        Need help? <a href="http://webchat.freenode.net/?randomnick=1&channels=%23haskell&uio=d4">Ask on #haskell</a> or <a href="https://gitlab.haskell.org/haskell/ghcup-hs/issues">report a bug</a>.
+        Need help? Ask on <a href="https://kiwiirc.com/nextclient/irc.libera.chat/#haskell-ghcup">#haskell-ghcup</a>, <a href="https://kiwiirc.com/nextclient/irc.libera.chat/#haskell">#haskell</a> or <a href="https://gitlab.haskell.org/haskell/ghcup-hs/issues">report a bug</a>.
      </p>

      <p id="about">
@@ -137,54 +148,7 @@
        &nbsp;&middot;&nbsp;
        <a href="https://github.com/rust-lang/rustup.rs/tree/master/www">web design from rustup</a>
      </p>
-    </script>
-    <script>
-      document.write(document.getElementById("html-content").innerHTML);
-    </script>
    <script type="text/javascript" src="ghcup.js"></script>

-    <noscript>
-      <p id="pitch">
-        <em>ghcup</em> is an installer for<br/>
-        the general purpose language <a href="https://www.haskell.org/">Haskell</a>
-      </p>
-
-      <div id="platform-instructions-default" class="instructions">
-        <div>
-          <p>To install Haskell, if you are running Linux, macOS (on Intel), FreeBSD or Windows Subsystem for Linux, run the following
-          in your terminal (as a user other than root), then follow the onscreen instructions.</p>
-		  <pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre>
-          <p>For macOS on Apple Silicon, run this instead:</p>
-          <div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | arch -x86_64 /bin/bash</span></pre><button class="tooltip" onclick="copyToClipboardSilicon()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
-          <p class="other-help">If you don't like curl | sh, see <a href="https://gitlab.haskell.org/haskell/ghcup-hs#manual-install">other installation methods</a>.</p>
-        </div>
-
-        <hr/>
-
-        <div>
-          <p>
-            If you are running Windows,<br/>follow the instructions on
-            <a class="windows-download" href="https://www.haskell.org/platform/#windows">Haskell Platform</a>
-          </p>
-        </div>
-
-      </div>
-
-      <p>
-        Need help? <a href="http://webchat.freenode.net/?randomnick=1&amp;channels=%23haskell&amp;uio=d4">Ask on #haskell</a>.
-      </p>
-
-      <p id="about">
-        <img src="haskell-logo.svg" alt="" />
-        ghcup is a haskell.org hosted project.
-        <br/>
-        <a href="https://www.haskell.org/downloads/">other installation options</a>
-        &nbsp;&middot;&nbsp;
-        <a href="https://gitlab.haskell.org/haskell/ghcup-hs">about ghcup</a>
-        &nbsp;&middot;&nbsp;
-        <a href="https://github.com/rust-lang/rustup.rs/tree/master/www">web design from rustup</a>
-      </p>
-
-    </noscript>
  </body>
 </html>
Author	SHA1	Message	Date
Julian Ospald	01715fdefc	Merge branch 'github-actions'	2021-07-13 17:26:03 +02:00
Julian Ospald	ab9b24e109	Switch to github actions wrt #178 and #159	2021-07-13 17:25:42 +02:00
Julian Ospald	34ecb1a56e	Add build-tool-depends: hspec-discover:hspec-discover	2021-07-13 17:25:13 +02:00
Julian Ospald	e3aef38f75	Merge branch 'update-stack-yaml'	2021-07-13 15:51:54 +02:00
Julian Ospald	ead2b76050	Switch to github actions wrt #178 and #159	2021-07-13 15:42:20 +02:00
Julian Ospald	2f35513f6e	Update stack.yaml	2021-07-13 15:26:43 +02:00
Julian Ospald	8573c99088	Update freeze stuff	2021-07-13 15:18:34 +02:00
Julian Ospald	dfe63332b2	Improve messages in bootstrap-haskell.ps1	2021-07-13 14:50:22 +02:00
Julian Ospald	767ae48c7b	Merge branch 'fix-install-stack'	2021-07-12 23:17:32 +02:00
Julian Ospald	f4160464c0	Merge branch 'www-update-win'	2021-07-12 23:15:46 +02:00
Julian Ospald	a572b1d5f0	Merge branch 'issue-177'	2021-07-12 23:15:06 +02:00
Julian Ospald	82587d26b5	Interactive should be the default!	2021-07-12 22:21:55 +02:00
Julian Ospald	ec98826e6d	Fix installStackBindist	2021-07-12 22:15:45 +02:00
Julian Ospald	b4fcd05e8f	Ask all questions at the beginning wrt #177	2021-07-12 22:14:56 +02:00
Julian Ospald	1345ec938b	Merge branch 'issue-173'	2021-07-12 17:09:46 +02:00
Julian Ospald	227f3acaa5	Implement 'whereis' subcommand, fixes #173	2021-07-12 17:09:18 +02:00
Julian Ospald	c20636f597	Fix adjust_bashrc on windows	2021-07-11 23:29:03 +02:00
Julian Ospald	c2d437150a	Merge branch 'issue-118'	2021-07-11 22:22:03 +02:00
Julian Ospald	9ff1467612	Add user choice for prepend/append of PATH Fixes #118	2021-07-11 22:08:19 +02:00
Julian Ospald	9218efd71a	Update linux aarch64 and armv7 ghcup binaries, fixing #160	2021-07-11 19:35:46 +02:00
Julian Ospald	bcd244a92a	Merge branch 'improve-logging'	2021-07-11 17:41:32 +02:00
Julian Ospald	7de552ed82	Merge branch 'issue-160-CI'	2021-07-11 16:12:01 +02:00
Julian Ospald	5cf297a4d2	Clarify stack postinstall message wrt #153	2021-07-11 15:09:16 +02:00
Julian Ospald	d86f84eef4	Improve logging with newlines	2021-07-11 14:34:05 +02:00
Julian Ospald	83458c6c1e	Merge branch 'issue-163'	2021-07-11 13:51:27 +02:00
Julian Ospald	b862ca52a9	Update arm/aarch CI	2021-07-11 13:43:53 +02:00
Julian Ospald	e8d79c9d38	Warn when powershell script is run as admin Fixes #163	2021-07-09 22:29:10 +02:00
Julian Ospald	59e1eee8ce	Update linux aarch64 ghcup binary Partly addresses #160	2021-07-09 22:06:37 +02:00
Julian Ospald	57c8ffda35	Update hacking docs	2021-07-09 19:51:21 +02:00
Julian Ospald	171ebd213d	Merge branch 'issue-175'	2021-07-07 20:47:44 +02:00
Julian Ospald	2a240cbd09	Make sure HLS and stack installation failures don't exit the entire script Fixes #175	2021-07-07 20:08:12 +02:00
Julian Ospald	068fa3454c	Update website	2021-07-04 22:15:56 +02:00
Julian Ospald	6b2bcbf2ce	Merge branch 'issue-151'	2021-07-04 20:27:45 +02:00
Julian Ospald	19e46dac18	Avoid too many questions	2021-07-04 19:45:43 +02:00
Julian Ospald	e96c863120	Speed up installation wrt #151	2021-07-03 21:16:46 +02:00
Julian Ospald	a30b3c84d7	Loosen bound on versions wrt #164	2021-07-03 17:48:39 +02:00
Julian Ospald	0ad5dc4583	Fix CI	2021-07-03 16:51:58 +02:00
Julian Ospald	7189998f3b	Cleanup rmGhcupDirs a bit	2021-07-03 11:25:49 +02:00
Julian Ospald	b6b24b8e0b	Update CHANGELOG	2021-07-03 11:15:45 +02:00
Julian Ospald	8e820c6e89	Clean up and fix nuke command	2021-07-03 11:15:37 +02:00
Julian Ospald	c74784a37c	Merge remote-tracking branch 'origin/merge-requests/101'	2021-07-03 11:15:09 +02:00
Julian Ospald	3d940cffcf	Merge remote-tracking branch 'origin/merge-requests/102'	2021-07-02 14:37:19 +02:00
Julian Ospald	0df044b284	Merge remote-tracking branch 'origin/merge-requests/103'	2021-07-02 14:02:43 +02:00
Julian Ospald	f576b9fb20	Merge remote-tracking branch 'origin/merge-requests/104'	2021-07-02 14:01:58 +02:00
Julian Ospald	5e00264119	Update hashes	2021-07-02 13:56:03 +02:00
Tom Ellis	05eeba32fa	Make it clear that Windows is supported	2021-07-01 13:43:24 +00:00
Arjun Kathuria	61019ecd49	Adds reporting remaining leftover files sorted by Depth.	2021-06-29 14:31:13 +05:30
Arjun Kathuria	bed06d1334	make reported leftover file paths absolute	2021-06-29 08:56:57 +05:30
Arjun Kathuria	f09f4bd1b7	Update the running of "Nuke" command in Main.hs	2021-06-29 08:47:44 +05:30
Arjun Kathuria	a3b11f21bb	change logWarn to logDebug in "rmghcup / handlePathNotPresent" function	2021-06-28 19:35:48 +05:30
Arjun Kathuria	69a461d9c3	Fix a couple of typos in Main.hs	2021-06-28 19:32:09 +05:30
Arjun Kathuria	1dfe5cfecf	updates path equating (which may fail) in "rmGhcup" function.	2021-06-28 13:56:20 +05:30
Arjun Kathuria	8e4550657e	couple of windows indentation fixes in source files	2021-06-27 00:25:55 +05:30
Arjun Kathuria	aee7fa52c3	warn user if current running ghcup exec is in non-standard location	2021-06-26 23:58:38 +05:30
Arjun Kathuria	d166cc84a1	change type of rmGhcup fn from "Excepts '[NotInstalled] m ()" to m ()	2021-06-26 23:26:31 +05:30
Arjun Kathuria	bb7229d224	Adds descriptive comments in rmGhcupDir explaing silent deletions and leftover reporting.	2021-06-26 22:09:32 +05:30
Arjun Kathuria	708cd5ead9	Fix a minor typo in some conditional windows code.	2021-06-26 21:59:15 +05:30
Arjun Kathuria	f7986cb4da	integrate new rmGhcupDirs fn into Main.hs	2021-06-26 21:56:52 +05:30
Arjun Kathuria	395aeb415d	change return type of rmGhcupDirs to m [Filepath] from m ()	2021-06-26 21:56:07 +05:30
Arjun Kathuria	830fb70492	adds returning left-over files back to Main.hs from rmGhcupDirs	2021-06-26 21:54:42 +05:30
Arjun Kathuria	6379a26afb	factor out `getDirectoryContentsRecursive` function in GHCup.Utils.Prelude	2021-06-26 21:53:14 +05:30
Arjun Kathuria	2277013c76	hide unsupportedOperation error in windows ghcup bin removal in case of different drives.	2021-06-26 20:05:21 +05:30
Arjun Kathuria	8934e0e6bd	Merge branch 'feat-nuke' of gitlab.haskell.org:arjun/ghcup-hs into feat-nuke	2021-06-26 20:00:37 +05:30
Arjun Kathuria	59519febbc	handle symlink case when deleting directories in rmGhcupDirs	2021-06-26 19:52:32 +05:30
Arjun Kathuria	46fcdd356c	Use rmFile instead of removeFile.	2021-06-26 19:32:53 +05:30
Tom Ellis	9f343c45e8	Fix typo	2021-06-25 20:06:18 +00:00
Arjun Kathuria	931904f388	fix minor typo in conditional windows code	2021-06-25 17:00:39 +05:30
Arjun Kathuria	a40d0cbb5c	swap out system.Directory.rename for Win32.File.moveFileEx for windows	2021-06-25 16:09:26 +05:30
Arjun Kathuria	9f5df9db10	Adds conditional windows ghcup bin removal code. Todo: test it, add more exception handling if required.	2021-06-25 15:06:02 +05:30
Arjun Kathuria	d26ddf7015	adds rudimentary ghcup bin removal code. TODO: handle windows.	2021-06-25 13:54:38 +05:30
Arjun Kathuria	9515065407	adds conditional export of useXDG in non-windows OS-es. fix in rmGhcupDirs code that used useXDG	2021-06-24 22:48:38 +05:30
Arjun Kathuria	82a8c61cf6	adds bin dir removal code, checking for XDG	2021-06-24 10:54:38 +05:30
Arjun Kathuria	3fae516ce4	Adds using 'rmFile' fn in rmGhcupDirs, it has better windows handling logic	2021-06-24 10:08:21 +05:30
Arjun Kathuria	33eaa765d7	adds better error handling when removing files and dirs in rmGhcupDirs function	2021-06-23 23:23:54 +05:30
Arjun Kathuria	3b3dde8413	updates deleting dirs in rmGhcupDirs according to feedback on merge request	2021-06-23 10:36:17 +05:30
Arjun Kathuria	118a2744fe	adds new getGhcupConfFilePath fn to GHCup.hs, also refactors to use for error handling in missing file cases	2021-06-23 10:10:28 +05:30
Arjun Kathuria	2e3dceecf8	abstracts out getting ghcup conf file path	2021-06-23 10:08:06 +05:30
Arjun Kathuria	07fb04bb74	Adds the new rmGhcupDirs function in Main.hs under Nuke command	2021-06-22 23:15:13 +05:30
Arjun Kathuria	8a1dbe9dbb	basic implementation of rmGhcupDirs function that removes relevant dirs in NUKE command	2021-06-22 23:14:25 +05:30
Arjun Kathuria	4ef3622616	Adds argument de-structuring to 'rmTool' function & remove the one in its body	2021-06-22 20:09:35 +05:30
Arjun Kathuria	82a704ab44	Adds 10s Thread-Delay and relevant Logger messages to Main.hs	2021-06-22 18:53:18 +05:30
Arjun Kathuria	0cb22945fe	Adds some logger messages.	2021-06-22 18:52:24 +05:30
Arjun Kathuria	d09adf9159	Updates Main.hs to work with new rmTool.	2021-06-22 18:51:03 +05:30
Arjun Kathuria	0b959c56fb	change rmTool type to `Excepts '[NotInstalled ] m ()`	2021-06-22 18:44:30 +05:30
Arjun Kathuria	ec29332657	Adds basic implementation of rmTool function	2021-06-22 14:29:26 +05:30
Arjun Kathuria	0f6381e67b	Move Nuke Command a little down in the file	2021-06-18 15:09:01 +05:30
Arjun Kathuria	877b55e21d	Adds basic "nuke" command structure so that it reflects in ghcup cli	2021-06-18 15:01:32 +05:30
Colin Barrett	fa11ca665f	Use GetFolderPath to get the Desktop location On my system, for example, Desktop is backed up with OneDrive	2021-06-15 22:25:24 -04:00
Julian Ospald	d9d196439f	Add windows HLS 1.2.0	2021-06-15 11:57:52 +02:00
Julian Ospald	a34fc4ad4f	Update HLS to 1.2.0	2021-06-14 00:35:21 +02:00
Julian Ospald	b4d52b88c1	Merge branch 'fix-ci'	2021-06-14 00:24:12 +02:00
Julian Ospald	3fc3d27361	Update metadata for 0.1.15.2	2021-06-14 00:21:13 +02:00
Julian Ospald	56b86add38	Fix CI	2021-06-13 22:52:26 +02:00
Julian Ospald	a608a105e3	Release 0.1.15.2	2021-06-13 22:07:33 +02:00
Julian Ospald	2e3e413f6c	Merge branch 'update-lol'	2021-06-13 21:29:22 +02:00
Julian Ospald	dfb6c09133	Enable libarchive wrt #147	2021-06-13 21:29:00 +02:00
Julian Ospald	9636276c17	Fix nancy	2021-06-13 19:29:25 +02:00
Julian Ospald	41783ff027	Fix ghcup upgrade if binary is in non-standard location	2021-06-13 15:08:31 +02:00
Julian Ospald	08b0ecd057	Allow to skip update checks	2021-06-13 15:05:39 +02:00
Julian Ospald	7e31798446	Fix ghcup_version.sh	2021-06-13 14:43:00 +02:00
Julian Ospald	534afa6e8d	Update windows CI	2021-06-13 14:15:48 +02:00
Julian Ospald	b56c44a210	Ensure directories	2021-06-13 13:41:06 +02:00
Julian Ospald	ef0c94fddd	Fix windows upgrade for good	2021-06-13 10:15:34 +02:00
Julian Ospald	f14c281841	Fix for real	2021-06-13 08:36:20 +02:00
Julian Ospald	b40cefee35	Fix 'ghcup upgrade' on windows	2021-06-13 07:51:54 +02:00
Julian Ospald	ff32ccfb50	Add warning about XDG dirs	2021-06-12 22:35:03 +02:00
Julian Ospald	581108ab65	Fix compliation from git	2021-06-12 22:27:56 +02:00
Julian Ospald	54e8e3efb0	Gracefully handle stack binary not installed by ghcup	2021-06-12 22:27:31 +02:00
Julian Ospald	4dcc63606e	Remove legacy handling of cabal binary	2021-06-12 22:26:50 +02:00
Julian Ospald	a396b6044d	Allow more failures	2021-06-12 16:08:30 +02:00
Julian Ospald	94e5d2e19f	Don't error on stack/hls failed install	2021-06-12 16:05:35 +02:00
Julian Ospald	a0976eee70	Mark stack 2.5.1 as old	2021-06-12 16:02:37 +02:00
Julian Ospald	61494d8c4b	Improve stack post install message	2021-06-12 16:01:15 +02:00
Julian Ospald	2b34c2dd69	Fix copy button under windows	2021-06-12 12:18:13 +02:00
Julian Ospald	afc30b87dd	Merge remote-tracking branch 'origin/merge-requests/97'	2021-06-12 02:42:06 +02:00
amesgen	ed0a63eb0c	fix ghcup-0.0.4.yaml Windows is an unknown platform in < 0.1.15	2021-06-12 02:11:20 +02:00
Julian Ospald	9ba590dd90	Update www	2021-06-12 01:23:49 +02:00
Julian Ospald	d4bffd2c4a	Merge branch 'prepare-0.1.15.1'	2021-06-12 00:20:03 +02:00
Julian Ospald	650f0a3e4e	Fix up 0.1.15.1	2021-06-11 23:57:16 +02:00
Julian Ospald	fd6ccf8f0a	Add FreeBSD to 0.1.14.1	2021-06-11 22:51:40 +02:00
Julian Ospald	d9fe4b8723	Use homebrew llvm	2021-06-11 22:17:18 +02:00
Julian Ospald	da2e7e0411	Fix aarch64 darwin thanks to bgamari	2021-06-11 22:17:02 +02:00
Julian Ospald	79d6a50e44	Drop some mingw64 packages we don't need	2021-06-11 22:12:23 +02:00
Julian Ospald	a13a5e5d20	Update darwin aarch64 install deps	2021-06-11 20:29:24 +02:00
Julian Ospald	82743dda2b	Merge remote-tracking branch 'origin/merge-requests/96'	2021-06-11 20:27:47 +02:00
jneira	6f80dd1fcc	Registry api win7 compat	2021-06-11 14:36:52 +02:00
Julian Ospald	1325dce493	Update darwin aarch64 install deps	2021-06-11 11:52:20 +02:00
Julian Ospald	ac21c19b7e	Remove unnecessary micro version stripping Since we can specify version bounds now, this is unnecessary.	2021-06-11 11:26:44 +02:00
Julian Ospald	2b4088d068	Add FreeBSD 8.10.5 tarballs	2021-06-10 18:24:42 +02:00
Julian Ospald	d86dc9b1d7	Fix release script	2021-06-10 15:39:50 +02:00
Julian Ospald	9982311c87	Update lzma-static	2021-06-10 15:10:53 +02:00
Julian Ospald	40c88d0b66	Add Darwin Big Sur AARCH64 binaries	2021-06-10 15:07:25 +02:00
Julian Ospald	e0ee1c2f94	Bump to 0.1.15.1	2021-06-10 14:00:26 +02:00
Julian Ospald	b4fa2780eb	Cleanup	2021-06-10 13:57:59 +02:00
Julian Ospald	df86183e97	Merge branch 'update-CI'	2021-06-10 13:57:36 +02:00
Julian Ospald	f7868dc646	Update install_deps	2021-06-10 13:57:02 +02:00
Julian Ospald	e742be7693	Allow to specify cabal directory	2021-06-10 10:58:24 +02:00
Julian Ospald	924bc8698d	Make Silent a switch	2021-06-10 10:58:07 +02:00
Julian Ospald	5214c35b20	Fix CI	2021-06-09 21:30:26 +02:00
Julian Ospald	700e04535a	Enable Mac AARCH64	2021-06-09 19:03:48 +02:00
Julian Ospald	fedc0bbef6	Debug	2021-06-09 18:38:24 +02:00
Julian Ospald	468fc5ade9	Use absolute ghcup binary path	2021-06-09 15:02:11 +02:00
Julian Ospald	2c077db36b	Improve portability	2021-06-09 14:43:48 +02:00
Julian Ospald	f80638bba4	Improve error handling	2021-06-09 14:43:36 +02:00
Julian Ospald	860aa0dafd	Improvements to bootstrap scripts	2021-06-08 23:46:20 +02:00
Julian Ospald	27510b3b51	Allow setting GHCUP_INSTALL_BASE_PREFIX on windows	2021-06-08 18:08:06 +02:00
Julian Ospald	96bcbbeeec	Update CI	2021-06-07 20:40:59 +02:00
Julian Ospald	8a632eb3b4	Merge branch 'windows-bootstrap-fixes'	2021-06-07 20:29:39 +02:00
Julian Ospald	aa992c0e5d	PrettyShow	2021-06-07 20:09:18 +02:00
Julian Ospald	810870e3a5	Fix Validate	2021-06-07 20:04:55 +02:00
Julian Ospald	d584e7b21b	Update shimgen URL	2021-06-07 20:04:45 +02:00
Julian Ospald	e93ac62c81	Add alpine 32 bit GHC-8.10.5	2021-06-07 20:04:27 +02:00
Julian Ospald	0d7d6c8382	Fix CI	2021-06-07 19:35:06 +02:00
Julian Ospald	5cd9ce8835	Fix build with zip	2021-06-07 19:33:12 +02:00
Julian Ospald	443522d526	Improve windows bootstrapping and make msys2 configurable	2021-06-07 19:33:12 +02:00
Julian Ospald	9061e60518	Allow to run powershell script straight	2021-06-07 14:48:06 +02:00
Julian Ospald	d65ab434b2	Fix windows link	2021-06-06 15:33:57 +02:00
Julian Ospald	cff592db82	Update bootstrap-haskell	2021-06-06 15:32:38 +02:00
Julian Ospald	97029e8102	Merge remote-tracking branch 'origin/merge-requests/92'	2021-06-06 12:10:35 +02:00
Fendor	828fd9eb10	Mention HLS in Help Message	2021-06-06 11:59:51 +02:00
Julian Ospald	03800d3b74	Hardcode C:\ in windows bootstrap script	2021-06-06 11:59:05 +02:00
Julian Ospald	a47304e599	Add ghcup-0.0.5.yaml to cabal extra docs	2021-06-06 11:58:51 +02:00
Julian Ospald	7b050e9fe2	Fix ghcup-gen validation for global tools	2021-06-06 11:57:37 +02:00
Julian Ospald	687a1d0c88	Merge branch 'fix-freebsd-build'	2021-06-06 11:28:36 +02:00
Julian Ospald	e09e3c264d	Fix build on FreeBSD Related: https://gitlab.haskell.org/ghc/ghc/-/issues/19948	2021-06-06 11:08:40 +02:00
Julian Ospald	b56431b4e3	Update ghcup-0.0.x.yaml	2021-06-06 08:55:41 +02:00
Julian Ospald	70ad50010d	Merge remote-tracking branch 'origin/merge-requests/90'	2021-06-06 08:12:24 +02:00
amesgen	ca3a249bea	make ghcup-0.0.4.yaml compatible with ghcup-0.1.14.1	2021-06-06 04:30:23 +02:00
amesgen	4337cdc38d	add GHC 8.10.5	2021-06-06 04:18:03 +02:00
Julian Ospald	9f92e0bc86	Fix #136	2021-06-05 22:26:35 +02:00
Julian Ospald	98751cf8fb	Merge branch 'windows-support'	2021-06-05 22:25:16 +02:00
Julian Ospald	2f62067d96	Windows support	2021-06-05 21:01:01 +02:00
Julian Ospald	2cb1554244	Fix stray br	2021-06-02 23:25:44 +02:00
Julian Ospald	6f3c143228	Update www to indicate WSL2 is needed	2021-06-02 23:17:08 +02:00
Julian Ospald	9793fc6888	Update stack things	2021-05-30 15:17:04 +02:00
Julian Ospald	043cab08ae	Update www	2021-05-20 19:21:57 +02:00
Julian Ospald	b7c83780da	Update remaining links	2021-05-19 19:22:51 +02:00
Julian Ospald	cff11135ff	Update IRC link	2021-05-19 19:19:12 +02:00