name: Flake check

on: [pull_request]

jobs:
  flake-check:
    runs-on: docker
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Nix
        uses: cachix/install-nix-action@v27
        with:
          nix_path: nixpkgs=channel:nixos-unstable

      - name: Run flake check
        run: nix flake check --impure