build.yml

name: build

on:
  merge_group:
  pull_request:
  push:
    branches:
      - master
  schedule:
    # Prime the caches every Monday
    - cron: 0 1 * * MON

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
          - macos-latest
          - windows-latest
        ocaml-compiler:
          - 4.14.x
          - 5.0.x
        skip-test:
          - false
        include:
          - os: ubuntu-latest
            ocaml-compiler: 4.8.x
            skip-test: true

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

    steps:
      - name: Set git to use LF
        run: |
          git config --global core.autocrlf false
          git config --global core.eol lf
          git config --global core.ignorecase false

      - name: Checkout code
        uses: actions/checkout@v4

      - name: Use OCaml ${{ matrix.ocaml-compiler }}
        uses: ocaml/setup-ocaml@v3
        with:
          ocaml-compiler: ${{ matrix.ocaml-compiler }}
          dune-cache: ${{ matrix.os == 'ubuntu-latest' }}

      - run: opam install . --with-test
        if: ${{ !matrix.skip-test }}

      - run: opam install .
        if: ${{ matrix.skip-test }}

      - run: opam exec -- make build

      - run: opam exec -- make test
        if: ${{ !matrix.skip-test }}

      - run: opam exec -- git diff --exit-code

  lint-fmt:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Use OCaml 4.14.x
        uses: ocaml/setup-ocaml@v3
        with:
          ocaml-compiler: 4.14.x
          dune-cache: true

      - name: Lint fmt
        uses: ocaml/setup-ocaml/lint-fmt@v3