stack.yml

# https://github.com/haskell/actions/tree/main/setup

name: build
on:
  push:
    branches: [main, master]
  pull_request:
    branches: [main, master]

permissions:
  contents: read

jobs:
  build:
    name: Stack resolver ${{ matrix.stackage-version }} on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        stackage-version:
          - lts-22.4
          - lts-21.23
          - lts-20.26
          - lts-19.33
          - lts-18.28

    steps:
      - uses: actions/checkout@v3

      - uses: haskell-actions/setup@v2
        name: Set up stack ${{ matrix.stackage-version }}
        id: setup
        with:
          enable-stack: true
          stack-version: latest

      - uses: actions/cache/restore@v3
        name: Restore cached ~/.stack
        with:
          path: ~/.stack
          key: ${{ runner.os }}-stack-global-${{ hashFiles('stack.yaml') }}-${{ hashFiles('**/*.cabal') }}-version-${{ matrix.stackage-version }}
          restore-keys: |
            ${{ runner.os }}-stack-global-
      - uses: actions/cache/restore@v3
        name: Restore cached .stack-work
        with:
          path: .stack-work
          key: ${{ runner.os }}-stack-work-${{ hashFiles('stack.yaml') }}-${{ hashFiles('**/*.cabal') }}-${{ hashFiles('**/*.hs') }}-version-${{ matrix.stackage-version }}
          restore-keys: |
            ${{ runner.os }}-stack-work-

      - name: Install dependencies
        run: stack build --resolver ${{ matrix.stackage-version }} --dependencies-only --test --bench

      # Cache dependencies already here, so that we do not have to rebuild them should the subsequent steps fail.
      
      - uses: actions/cache/save@v3
        name: Cache ~/.stack
        with:
          path: ~/.stack
          key: ${{ runner.os }}-stack-global-${{ hashFiles('stack.yaml') }}-${{ hashFiles('**/*.cabal') }}-version-${{ matrix.stackage-version }}
          restore-keys: |
            ${{ runner.os }}-stack-global-
      - uses: actions/cache/save@v3
        name: Cache .stack-work
        with:
          path: .stack-work
          key: ${{ runner.os }}-stack-work-${{ hashFiles('stack.yaml') }}-${{ hashFiles('**/*.cabal') }}-${{ hashFiles('**/*.hs') }}-version-${{ matrix.stackage-version }}
          restore-keys: |
            ${{ runner.os }}-stack-work-

      - name: Build
        run: stack build --resolver ${{ matrix.stackage-version }}

      - name: Run tests
        run: stack test --resolver ${{ matrix.stackage-version }}

      - name: Run benchmarks
        run: stack bench --resolver ${{ matrix.stackage-version }}

      - name: Build documentation
        run: stack haddock --resolver ${{ matrix.stackage-version }}