name: flake-update
on:
  workflow_dispatch: 
  schedule:
    - cron: '0 5 * * *' 

jobs:
  lockfile:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4.1.2
      - name: Install Nix
        uses: DeterminateSystems/nix-installer-action@v9
      - name: update
        uses: DeterminateSystems/update-flake-lock@v20
        with:
          pr-title: "Update flake.lock" 
      - name: merge
        run: |
          gh pr merge ${{ steps.update.outputs.pull-request-number }} --squash --delete-branch
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}