name: update-flake-lock
on:
  workflow_dispatch:
  schedule:
    - cron: "0 12 * * SAT" # runs weekly on Saturday at noon

jobs:
  lockfile:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2
      - name: Install Nix
        uses: cachix/install-nix-action@v20
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
      - name: Update flake.lock
        id: update
        uses: DeterminateSystems/update-flake-lock@v16
        with:
          pr-title: "Update flake.lock"