update.yml

name: Update inputs

on:
  workflow_dispatch:
  schedule:
    - cron: "0 0 * * *"

jobs:
  main:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref }}

      - uses: DeterminateSystems/nix-installer-action@v12

      - name: Update inputs
        id: update
        run: |
          old="$(sha256sum flake.lock)"
          nix flake update
          new="$(sha256sum flake.lock)"
          if [ "$old" != "$new" ]; then
            echo "trigger-build=true" >> $GITHUB_OUTPUT
          fi

      - name: Trigger build
        if: ${{ steps.update.outputs.trigger-build }}
        uses: actions/github-script@v7.0.1
        with:
          script: |
            github.rest.repos.createDispatchEvent({
              owner: context.repo.owner,
              repo: context.repo.repo,
              event_type: 'trigger-build',
            });

      - name: Commit flake update
        if: ${{ steps.update.outputs.trigger-build }}
        uses: planetscale/ghcommit-action@v0.1.39
        with:
          commit_message: "🤖 Update inputs"
          repo: ${{ github.repository }}
          branch: ${{ github.head_ref || github.ref_name }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}