pre-commit.yml

name: pre-commit

on:
  pull_request:
  push:
    branches: [master]

jobs:
  file-diff:
    runs-on: ubuntu-latest
    outputs:
      git-diff: ${{ steps.git-diff.outputs.diff }}
    steps:
        - name: Checkout code
          uses: actions/checkout@v3
        - name: Find changed files
          uses: technote-space/get-diff-action@v6.1.2
          id: git-diff
          with:
            PATTERNS: |
              +(src|exe|test|ghcide|plugins|hls-plugin-api|hie-compat|hls-graph|hls-test-utils)/**/*.hs
  pre-commit:
    runs-on: ubuntu-latest
    needs: file-diff
    steps:
    - uses: actions/checkout@v3
    - uses: ./.github/actions/setup-build
      with:
        # select a stable GHC version
        ghc: 9.6
        os: ${{ runner.os }}
        shorten-hls: false

    - name: "Install stylish-haskell"
      run: |
        cabal install stylish-haskell
        echo "${HOME}/.cabal/bin" >> $GITHUB_PATH

    - name: "Check stylish-haskell is available"
      run: |
        echo $(which stylish-haskell)

    - name: Compiled deps cache
      id: stylish-haskell-compiled-cache
      uses: actions/cache@v3
      env:
        cache-name: stylish-haskell-compiled-cache
      with:
        path: ${{ env.CABAL_PKGS_DIR }}
        key:  ${{ inputs.cache-prefix }}${{ env.cache-name }}-${{ inputs.os }}-${{ inputs.ghc }}-${{ env.INDEX_STATE }}-${{ hashFiles('cabal.project.freeze') }}
        restore-keys: |
              ${{ inputs.cache-prefix }}${{ env.cache-name }}-${{ inputs.os }}-${{ inputs.ghc }}-${{ env.INDEX_STATE }}-
              ${{ inputs.cache-prefix }}${{ env.cache-name }}-${{ inputs.os }}-${{ inputs.ghc }}-
              ${{ inputs.cache-prefix }}${{ env.cache-name }}-${{ inputs.os }}-

    - uses: actions/setup-python@v3
    - uses: pre-commit/action@v3.0.1
      with:
        extra_args: --files ${{ needs.file-diff.outputs.git-diff }}