name: Nix flake and NixOS tests

on:
  pull_request:
    branches: [master, main]
    paths:
      - "flake.*"
      - "distro/nix/**"
jobs:
  check-flake:
    runs-on: ubuntu-latest
    timeout-minutes: 120
    steps:

      - name: Checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Install Nix
        uses: cachix/install-nix-action@v31
        with:
          enable_kvm: true
          extra_nix_config: |
            system-features = nixos-test benchmark big-parallel kvm

      - name: Check the flake
        run: nix flake check -L

      - name: Run NixOS module test
        run: nix build .#nixosTests.x86_64-linux.nixos-module -L

      - name: Run NixOS service start test
        run: nix build .#nixosTests.x86_64-linux.nixos-service-start-module -L

      - name: Run greeter niri test
        run: nix build .#nixosTests.x86_64-linux.greeter-niri-module -L

      - name: Run home-manager module test
        run: nix build .#nixosTests.x86_64-linux.home-manager-module -L

      - name: Run niri home-manager module test
        run: nix build .#nixosTests.x86_64-linux.niri-home-module -L