name: github-action

on: [push, pull_request] 

jobs:
  build:
    strategy:
      matrix:
        ghc: ['8.0.2', '8.2.2', '8.4.4', '8.6.5', '8.8.4', '8.10.2']
        os: ['ubuntu-latest', 'macos-latest']
        exclude:
          # There are some linker warnings in 802 on darwin that
          # cause compilation to fail
          # See https://github.com/NixOS/nixpkgs/issues/25139
          - ghc: '8.0.2'
            os: 'macos-latest'
    runs-on: ${{ matrix.os }}

    name: GHC ${{ matrix.ghc }} on ${{ matrix.os }}
    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-haskell@v1
      with:
        ghc-version: ${{ matrix.ghc }}
    - name: Cache
      uses: actions/cache@v1
      env:
        cache-name: cache-cabal
      with:
        path: ~/.cabal
        key: ${{ runner.os }}-${{ matrix.ghc }}-build-${{ env.cache-name }}-${{ hashFiles('**/*.cabal') }}-${{ hashFiles('**/cabal.project') }}
        restore-keys: |
          ${{ runner.os }}-${{ matrix.ghc }}-build-${{ env.cache-name }}-
          ${{ runner.os }}-${{ matrix.ghc }}-build-
          ${{ runner.os }}-${{ matrix.ghc }}-
          ${{ runner.os }}

    - name: Install dependencies
      run: |
        cabal update
        cabal build --only-dependencies --enable-tests --enable-benchmarks
    - name: Build
      run: cabal build --enable-tests --enable-benchmarks all
    - name: Run tests
      run: cabal test --enable-tests all
    - name: Build Docs
      run: cabal haddock