# modified from https://github.com/jgm/pandoc/blob/master/.github/workflows/ci.yml
name: CI

on:
  push:
    branches:
    - '**'
    paths-ignore: []
  pull_request:
    paths-ignore: []

jobs:
  linux:

    runs-on: ubuntu-20.04
    strategy:
      fail-fast: false
      matrix:
        versions:
          - ghc: '8.6.5'
            cabal: '3.6'
          - ghc: '8.8.4'
            cabal: '3.6'
          - ghc: '8.10.7'
            cabal: '3.6'
          # - ghc: '9.0.2'
          #   cabal: '3.6'

    steps:
    - uses: actions/checkout@v2

    # need to install older cabal/ghc versions from ppa repository

    - name: Install recent cabal/ghc
      uses: haskell/actions/setup@v1
      with:
        ghc-version: ${{ matrix.versions.ghc }}
        cabal-version: ${{ matrix.versions.cabal }}

    # declare/restore cached things
    # caching doesn't work for scheduled runs yet
    # https://github.com/actions/cache/issues/63

    - name: Cache cabal global package db
      id:   cabal-global
      uses: actions/cache@v2
      with:
        path: |
          ~/.cabal
        key: ${{ runner.os }}-${{ matrix.versions.ghc }}-${{ matrix.versions.cabal }}-cabal-global-${{ hashFiles('cabal.project') }}

    - name: Cache cabal work
      id:   cabal-local
      uses: actions/cache@v2
      with:
        path: |
          dist-newstyle
        key: ${{ runner.os }}-${{ matrix.versions.ghc }}-${{ matrix.versions.cabal }}-cabal-local

    - name: Install dependencies
      run: |
        cabal update
        cabal build all --dependencies-only --enable-tests --disable-optimization
    - name: Build
      run: |
        cabal build all --enable-tests --disable-optimization 2>&1 | tee build.log
    - name: Test
      run: |
        cabal test all --disable-optimization