name: CI
on:
  pull_request:
  push:
jobs:
  tests:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2.3.4
    - uses: cachix/install-nix-action@v13
      with:
        install_url: https://github.com/numtide/nix-flakes-installer/releases/download/nix-2.4pre20210429_d15a196/install

    - run: echo "experimental-features = nix-command flakes" | sudo tee -a /etc/nix/nix.conf
    - name: Run Nix Flake Check
      run: nix flake check

    - name: Check Nix parsing
      run: nix-shell --command "evalnix"