nix.dev/.github/workflows/ci.yml

name: "CI"
on: 
- pull_request
- push

jobs:
  docs:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2.3.4
      with:
        fetch-depth: 0
    - uses: cachix/install-nix-action@v13
      with:
        nix_path: nixpkgs=channel:nixos-unstable
    - name: Build
      run: nix-build