name: Install

on:
  - push
  - pull_request

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        os:
          - macos-latest
          - ubuntu-latest
        ocaml-version:
          - 4.09.1

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

    steps:
      - name: Checkout code
        uses: actions/checkout@v2
        with:
          submodules: true

      - name: Use OCaml ${{ matrix.ocaml-version }}
        uses: avsm/setup-ocaml@v1
        with:
          ocaml-version: ${{ matrix.ocaml-version }}

      - name: Restore opam cache
        uses: actions/cache@v2
        with:
          path: ${HOME}/.opam
          key: ${{ runner.os }}-${{ hashFiles('opam.locked') }}

      - name: Install Required Brew Packages for MacOS
        run: brew install pkg-config automake
        if: runner.os == 'macOS'

      # ensure infer isn't installed in this switch, then deal with dependencies
      - run: opam remove infer || true

      - run: opam update --upgrade

      - run: opam pin add --no-action infer .

      - run: opam depext --update infer;

      - run: opam install --deps-only infer

      - run: opam install infer