name: CI

on:
  pull_request:
    types: [synchronize, opened, reopened]
  push:
  schedule:
    # additionally run once per week (At 00:00 on Sunday) to maintain cache
    - cron: '0 0 * * 0'

  workflow_dispatch:

jobs:
  build:
    name: ghc ${{ matrix.ghc }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        # We must always use the latest version of cabal because
        # otherwise ghc-paths, which is a dependency of doctest,
        # can't be configured.
        cabal: ["3.10"]
        ghc:
# Can't do earlier than 8.10 because we use unlifted newtypes
# If we're willing to fudge that then maybe we can extend
# the range of GHCs we support
#          - "8.6.5"
#          - "8.8.3"
          - "8.10.7"
          - "9.0.2"
          - "9.2.4"
          - "9.4.7"
          - "9.6.3"
          - "9.8.1"

    steps:
    - uses: actions/checkout@v4

    - uses: haskell-actions/setup@v2.5
      id: setup-haskell-cabal
      name: Setup Haskell
      with:
        ghc-version: ${{ matrix.ghc }}
        cabal-version: ${{ matrix.cabal }}

    - name: Configure
      run: |
        cabal configure --enable-tests --enable-benchmarks --enable-documentation --test-show-details=direct --write-ghc-environment-files=always

    - name: Freeze
      run: |
        cabal freeze


    - uses: actions/cache@v3
      name: Cache ~/.cabal/3tore
      with:
        path: ~/.cabal/store
        key: ${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('cabal.project.freeze') }}

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

    - name: Build
      run: |
        cabal build all

#    - name: Test
#      run: |
#        cabal test all

#    - name: Documentation
#      run: |
#        cabal haddock all