ci.yml

name: CI

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

jobs:
  cabal:
    name: ${{ matrix.os }} / ghc ${{ matrix.ghc }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macOS-latest, windows-latest]
        cabal: ["3.8"]
        ghc:
          - "8.10.7"
          - "9.0.2"
          - "9.2.7"
          - "9.4.4"
          - "9.6.1"

        exclude:
          - os: macOS-latest
            ghc: 8.10.7
          - os: macOS-latest
            ghc: 9.0.2
          - os: macOS-latest
            ghc: 9.2.7
          - os: macOS-latest
            ghc: 9.4.4

          - os: windows-latest
            ghc: 8.10.7
          - os: windows-latest
            ghc: 9.0.2
          - os: windows-latest
            ghc: 9.2.7
          - os: windows-latest
            ghc: 9.4.4

    steps:
    - uses: actions/checkout@v3

    - uses: haskell/actions/setup@v2.3
      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/store
      with:
        path: ${{ steps.setup-haskell-cabal.outputs.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

  stack:
      name: stack / ghc ${{ matrix.ghc }}
      runs-on: ubuntu-latest
      strategy:
        matrix:
          stack: ["2.9.3"]
          ghc: ["9.2.7"]

      steps:
      - uses: actions/checkout@v3

      - uses: haskell/actions/setup@v2.3
        name: Setup Haskell Stack
        with:
          ghc-version: ${{ matrix.ghc }}
          stack-version: ${{ matrix.stack }}

      - uses: actions/cache@v3
        name: Cache ~/.stack
        with:
          path: ~/.stack
          key: ${{ runner.os }}-${{ matrix.ghc }}-stack

      - name: Install dependencies
        run: |
          stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks --only-dependencies

      - name: Build
        run: |
          stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks

      - name: Test
        run: |
          stack test --system-ghc

  format:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: fourmolu/fourmolu-action@v6

  hlint:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2

    # See: https://github.com/haskell/actions/issues/128
    - name: Fix Ubuntu Runner
      run: |
        sudo apt-get install -y libncurses5

    - name: Run HLint
      env:
         HLINT_VERSION: "3.5"
      run: |
        curl -L https://github.com/ndmitchell/hlint/releases/download/v${HLINT_VERSION}/hlint-${HLINT_VERSION}-x86_64-linux.tar.gz --output hlint.tar.gz
        tar -xvf hlint.tar.gz
        ./hlint-${HLINT_VERSION}/hlint src/ test/

  stan:
    name: stan
    runs-on: ubuntu-latest
    env:
      CABAL_VERSION: "3.6"
      # `stan` Github Release supports this version as of now. If we want to run stan on multiple
      # GHC versions, we need to build `stan` from source.
      GHC_VERSION: "8.10.1"
      STAN_VERSION: "0.0.1.0"

    steps:
    - uses: actions/checkout@v3

    - uses: haskell/actions/setup@v2.3
      id: setup-haskell-cabal
      name: Setup Haskell
      with:
        ghc-version: ${{ env.GHC_VERSION }}
        cabal-version: ${{ env.CABAL_VERSION }}

    - 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/store
      with:
        path: ${{ steps.setup-haskell-cabal.outputs.cabal-store }}
        key: stan-${{ runner.os }}-${{ env.GHC_VERSION }}-${{ hashFiles('cabal.project.freeze') }}

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

    - name: Build
      run: |
        cabal build all

    - name: Download `stan`
      run: |
        curl --silent -L https://github.com/kowainik/stan/releases/latest/download/stan-$STAN_VERSION-Linux-ghc-$GHC_VERSION --output stan
        chmod +x stan

    - name: Run `stan`
      run: |
        ./stan report

    - name: Upload HTML stan report artifact
      uses: actions/upload-artifact@v3
      with:
        name: stan-report
        path: stan.html