haskell.yml

name: Haskell CI

on: [push]

jobs:
  build:
    runs-on: ${{ matrix.os }}

    defaults:
      run:
        shell: bash

    strategy:
      fail-fast: false
      matrix:
        ghc: ["8.10.7", "9.2.8", "9.6.2", "9.8.1"]
        os: [ubuntu-latest, macos-latest, windows-latest]

    steps:
    - uses: actions/checkout@v1

    - uses: haskell/actions/setup@v1
      id: setup-haskell
      with:
        ghc-version: ${{ matrix.ghc }}
        cabal-version: latest

    - name: Haskell versions
      run: |
        ghc --version
        cabal --version

    - name: Cabal update
      run: cabal update

    - name: Cabal Configure
      run: cabal build all --dry-run --enable-tests --enable-benchmarks --write-ghc-environment-files=always

    - name: Record dependencies
      run: |
        cat dist-newstyle/cache/plan.json | jq -r '."install-plan"[].id' | sort | uniq > dependencies.txt

    - name: Set cache version
      run: echo "CACHE_VERSION=9w76Z3Qx" >> $GITHUB_ENV

    - uses: actions/cache@v2
      name: Cache cabal store
      with:
        path: ${{ steps.setup-haskell.outputs.cabal-store }}
        key: cache-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('dependencies.txt') }}
        restore-keys: |
          cache-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('dependencies.txt') }}
          cache-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-

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

    - name: Build
      run: cabal build all

    - name: Run tests
      run: cabal test all