name: Update flake.lock

on:
  schedule:
    # run every saturday
    - cron: "0 0 * * 6"
  workflow_dispatch:

jobs:
  update:
    name: Run update

    runs-on: ubuntu-latest

    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Nix
        uses: cachix/install-nix-action@v27

      - name: Update lockfile & make PR
        uses: DeterminateSystems/update-flake-lock@v22
        id: update
        with:
          commit-msg: 'nix: update flake.lock'
          pr-title: 'nix: update flake.lock'
          token: ${{ github.token }}