Test Build workflow (openwrt/luci)

The Test Build workflow from openwrt/luci, explained and optimized by Latchkey.

What it does

This is the Test Build workflow from the openwrt/luci repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

name: Test Build

on:
  pull_request:

permissions:
  contents: read
  checks: read

jobs:
  wait-for-formalities:
    name: Wait for FormalityCheck
    runs-on: ubuntu-slim
    steps:
      - name: Wait for Check Run
        uses: lewagon/wait-on-check-action@v1.8.0
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          check-name: 'FormalityCheck / Git & Commits'
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          wait-interval: 5

  build:
    needs: wait-for-formalities
    uses: openwrt/actions-shared-workflows/.github/workflows/multi-arch-test-build.yml@main
    with:
      matrix: '{"include": [{"arch": "x86_64", "target": "x86-64"}]}'

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: Test Build
 
on:
  pull_request:
 
permissions:
  contents: read
  checks: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  wait-for-formalities:
    timeout-minutes: 30
    name: Wait for FormalityCheck
    runs-on: ubuntu-slim
    steps:
      - name: Wait for Check Run
        uses: lewagon/wait-on-check-action@v1.8.0
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          check-name: 'FormalityCheck / Git & Commits'
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          wait-interval: 5
 
  build:
    timeout-minutes: 30
    needs: wait-for-formalities
    uses: openwrt/actions-shared-workflows/.github/workflows/multi-arch-test-build.yml@main
    with:
      matrix: '{"include": [{"arch": "x86_64", "target": "x86-64"}]}'
 

What changed

• Cancel superseded runs when a branch or PR gets a newer push.
• Add a job timeout so a hung step cannot burn hours of runner time.

2 third-party actions are referenced by a movable tag. Pin them to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

This workflow runs 2 jobs per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.