name: Update Flake

on:
  schedule:
    - cron: '0 2 * * *'
  workflow_dispatch:

jobs:
  update-flake:
    runs-on: ubuntu-latest-amd64

    permissions:
      contents: write

    steps:
    - uses: actions/checkout@v3
    - name: Install Nix
      uses: https://github.com/DeterminateSystems/nix-installer-action@v4
      with:
        init: none
        planner: linux
        github-token: null
    - run: nix flake update
    - uses: https://github.com/stefanzweifel/git-auto-commit-action@v4
      with:
        commit_message: "[automation] Update flake"