name: check and format flake

on:
  #pull_request:
  #  paths:
  #    - "**.nix"
  #push:
  #  paths:
  #    - "**.nix"
  workflow_dispatch:

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - uses: cachix/install-nix-action@v19
        with:
          github_access_token: ${{ secrets.GITHUB_TOKEN }}

      - run: |
          export NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1
          export NIXPKGS_ALLOW_BROKEN=1
          nix flake check --impure
  format:
    if: ${{ github.event_name == 'push' }}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - uses: cachix/install-nix-action@v19
        with:
          github_access_token: ${{ secrets.GITHUB_TOKEN }}

      - run: nix fmt

      - uses: EndBug/add-and-commit@v9
        with:
          default_author: github_actions
          message: "chore: format flake"