name: update-flake-lock
on:
  workflow_dispatch: # allows manual triggering
  schedule:
    - cron: '0 0 * * 1,4' # Run twice a week

jobs:
  lockfile:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: Install Nix
        uses: cachix/install-nix-action@v20
      - name: Update flake.lock
        uses: DeterminateSystems/update-flake-lock@v18
        with:
          token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}
          pr-body: |
            Automated changes by the update-flake-lock
            ```
            {{ env.GIT_COMMIT_MESSAGE }}
            ```
            bors merge