haskell.yml

name: Haskell CI

on:
  push:
    branches: ["main"]
  pull_request:
  merge_group:

jobs:
  build:
    runs-on: ${{ matrix.os }}

    strategy:
      fail-fast: false
      matrix:
        ghc: ["8.10.7", "9.2.8", "9.4.4", "9.6.2"]
        cabal: ["3.8.1.0"]
        os: [ubuntu-latest, macos-latest, windows-latest]

    defaults:
      run:
        shell: ${{ matrix.os == 'windows-latest' && 'msys2 {0}' || 'bash' }}

    steps:
    - name: "WIN: Setup MSYS2 and libraries"
      if: runner.os == 'Windows'
      uses: msys2/setup-msys2@v2
      with:
        update: true
        install: >-
          base-devel
          autoconf-wrapper
          autoconf
          automake
          libtool
          make
          git
          mingw-w64-x86_64-jq

    - name: Set cache version
      run: echo "CACHE_VERSION=pu4Aevoo_v1" >> $GITHUB_ENV

    - name: "LINUX: Setup Haskell"
      uses: haskell/actions/setup@v2
      if: runner.os != 'Windows'
      id: setup-haskell
      with:
        ghc-version: ${{ matrix.ghc }}
        cabal-version: ${{ matrix.cabal }}

    - name: "WIN: Setup Haskell"
      id: win-setup-haskell
      if: runner.os == 'Windows'
      run: |
        # see https://gitlab.haskell.org/haskell/ghcup-hs/-/blob/master/scripts/bootstrap/bootstrap-haskell
        curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | \
          BOOTSTRAP_HASKELL_NONINTERACTIVE=1 \
          BOOTSTRAP_HASKELL_ADJUST_CABAL_CONFIG=1 \
          BOOTSTRAP_HASKELL_ADJUST_BASHRC=1 \
          BOOTSTRAP_HASKELL_GHC_VERSION="${{ matrix.ghc }}" \
          BOOTSTRAP_HASKELL_CABAL_VERSION="${{ matrix.cabal }}" \
          sh

        # MSYS2 doesn't inherit $GITHUB_PATH so this is needed
        cat <(echo "source /c/ghcup/env") ~/.bashrc > ~/.bashrc.new
        mv ~/.bashrc.new ~/.bashrc

        source ~/.bashrc

        # There is an issue with crt libraries, fixed by prepending the ghc
        # mingw32 libraries directory to every other library directory.
        echo "# Original cabal config extra-lib-dirs"
        grep extra-lib-dirs /c/cabal/config

        sed -i 's/C:\\msys64\\mingw64\\lib/C:\\ghcup\\ghc\\${{matrix.ghc}}\\mingw\\x86_64-w64-mingw32\\lib, C:\\msys64\\mingw64\\lib/g' /c/cabal/config

        echo "# Modified cabal config extra-lib-dirs"
        grep extra-lib-dirs /c/cabal/config

        ghc --version
        cabal --version
        echo "cabal-store=$(dirname $(cabal --help | tail -1 | tr -d ' '))\\store" >> $GITHUB_OUTPUT

    - uses: actions/checkout@v3

    - name: "Configure cabal.project.local"
      run: |
        cat ./.github/workflows/cabal.project.local > ./cabal.project.local
        cat ./cabal.project.local

    - name: "Cabal update"
      run: cabal update

    - name: Record dependencies
      id: record-deps
      run: |
        cabal build all --dry-run
        cat dist-newstyle/cache/plan.json | jq -r '."install-plan"[].id' | sort | uniq > dependencies.txt
        echo "weeknum=$(/bin/date -u "+%W")" >> $GITHUB_OUTPUT

    - uses: actions/cache@v3
      name: "Cache cabal store"
      with:
        path: ${{ runner.os == 'Windows' && steps.win-setup-haskell.outputs.cabal-store || steps.setup-haskell.outputs.cabal-store }}
        key: cache-dependencies-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('dependencies.txt') }}
        restore-keys: cache-dependencies-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}

    - uses: actions/cache@v3
      name: "Cache `dist-newstyle`"
      with:
        path: |
          dist-newstyle
          !dist-newstyle/**/.git
        key: cache-dist-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ steps.record-deps.outputs.weeknum }}
        restore-keys: cache-dist-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}

    - name: Build dependencies
      run: |
        cabal build --only-dependencies all

    - name: Build projects [build]
      run: cabal build all

    - name: Build documentation [haddock]
      run: cabal haddock all

    - name: io-sim [test]
      run: cabal run io-sim:test

    - name: si-timers [test]
      run: cabal run si-timers:test

    - name: strict-mvar [test]
      run: cabal run strict-mvar:test


  stylish-haskell:
    runs-on: ubuntu-22.04

    env:
      STYLISH_HASKELL_VERSION: "0.14.4.0"

    steps:
    - name: Set cache version
      run: |
        echo "CACHE_VERSION=hi5eTh3A" >> $GITHUB_ENV

    - name: "Install build environment (apt-get)"
      run: |
        sudo apt-get update
        sudo apt-get -y install fd-find

    - name: "Setup Haskell"
      uses: haskell/actions/setup@v2
      id: setup-haskell
      with:
        ghc-version: 9.2.8
        cabal-version: 3.8.1.0

    - name: "Setup cabal bin path"
      run: |
        echo "$HOME/.cabal/bin" >> $GITHUB_PATH

    - uses: actions/cache@v3
      name: "Cache cabal store"
      with:
        path: ${{ steps.setup-haskell.outputs.cabal-store }}
        key: cache-dependencies-${{ env.CACHE_VERSION }}

    - name: Download stylish-haskell
      run: |
        version="${{ env.STYLISH_HASKELL_VERSION }}"

        curl -sL \
          "https://github.com/haskell/stylish-haskell/releases/download/v$version/stylish-haskell-v$version-linux-x86_64.tar.gz" \
          | tar -C "/tmp" -xz

        echo "PATH=/tmp/stylish-haskell-v$version-linux-x86_64:$PATH" >> $GITHUB_ENV

    - name: "`stylish-haskell` version"
      run: |
        which stylish-haskell
        stylish-haskell --version

    - uses: actions/checkout@v3

    - name: "Run `stylish-haskell`"
      run: |
        ./scripts/check-stylish.sh
        git diff --exit-code