ci.yml

name: Continuous Integration

on: [push, pull_request]

jobs:
  continuous-integration:
    strategy:
      matrix:
        ghc-version:
          - "9.0.2"
          - "9.2.8"
          - "9.4.5"
          - "9.6.4"
          - "9.8.2"

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v4

    - name: Install cabal/ghc
      uses: haskell-actions/setup@v2
      id: setup-haskell
      with:
        ghc-version: ${{ matrix.ghc-version }}
        cabal-version: '3.10.3.0'
    
    - name: Generate freeze file
      run: |
        cabal update
        cabal configure --disable-optimization
        cabal freeze
        # 'cabal freeze' will use the nearest index state which might not be exactly equal
        # to the index state specified in 'cabal.project'
        sed '/^index-state: /d' cabal.project.freeze > dependencies-versions
    
    - name: Cache cabal work
      uses: actions/cache@v4
      with:
        path: |
          dist-newstyle
          ${{ steps.setup-haskell.outputs.cabal-store }}
        # We are using the hash of 'cabal.project.local' so that different levels
        # of optimizations are cached separately
        key: ${{ runner.os }}-${{ hashFiles('dependencies-versions', 'cabal.project', 'cabal.project.local') }}-cabal-install

    - name: Build dependencies only
      run: |
        cabal build --only-dependencies
    
    - name: Build this package
      run: |
        cabal build