name: Build
on:
  pull_request:
  push:
jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        nix:
          - name: 2.3.16
            url: https://releases.nixos.org/nix/nix-2.3.16/install
          - name: 2.4
            url: https://releases.nixos.org/nix/nix-2.4/install
          - name: 2.5pre
            url: https://github.com/numtide/nix-unstable-installer/releases/download/nix-2.5pre20211026_5667822/install
    steps:
      - uses: actions/checkout@v2.3.5
      - uses: cachix/install-nix-action@v15
        with:
          install_url: ${{ matrix.nix.url }}
          extra_nix_config: |
            experimental-features = nix-command flakes

      - run: nix flake check
        if: ${{ !contains(matrix.nix.name, '2.3') }}
      - name: Build Colmena
        run: nix build -L
        if: ${{ !contains(matrix.nix.name, '2.3') }}
      - name: Build Colmena with flake-compat
        run: nix-build

  tests:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        nix:
          - name: 2.3.16
            url: https://releases.nixos.org/nix/nix-2.3.16/install
          - name: 2.4
            url: https://releases.nixos.org/nix/nix-2.4/install
          - name: 2.5pre
            url: https://github.com/numtide/nix-unstable-installer/releases/download/nix-2.5pre20211026_5667822/install
    steps:
      - uses: actions/checkout@v2.3.5
      - uses: cachix/install-nix-action@v15
        with:
          install_url: ${{ matrix.nix.url }}
          extra_nix_config: |
            experimental-features = nix-command flakes

      - run: nix-shell --run "cargo test"
        if: ${{ !contains(matrix.nix.name, '2.3') }}
      - run: nix-shell --run "cargo test -- --skip flake"
        if: ${{ contains(matrix.nix.name, '2.3') }}