Build and Test workflow (hbldh/bleak)

The Build and Test workflow from hbldh/bleak, explained and optimized by Latchkey.

What it does

This is the Build and Test workflow from the hbldh/bleak repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

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

The workflow

name: Build and Test

on: workflow_dispatch

jobs:
  build_android:
    name: "Build Android"
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v4
      - name: Install dependencies
        run: pip install buildozer cython
      - name: Cache buildozer files
        uses: actions/cache@v4
        id: buildozer-cache
        with:
          path: |
            ~/.buildozer
            examples/kivy/.buildozer
          key: build-cache-buildozer
      - name: Clean bleak recipe for cache
        if: steps.buildozer-cache.outputs.cache-hit == 'true'
        working-directory: examples/kivy
        run: buildozer android p4a -- clean-recipe-build --local-recipes $(pwd)/../../bleak/backends/p4android/recipes bleak
      - name: Build Kivy example
        working-directory: examples/kivy
        run: buildozer android debug

The same workflow, on Latchkey

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

name: Build and Test
 
on: workflow_dispatch
 
jobs:
  build_android:
    timeout-minutes: 30
    name: "Build Android"
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v4
      - name: Install dependencies
        run: pip install buildozer cython
      - name: Cache buildozer files
        uses: actions/cache@v4
        id: buildozer-cache
        with:
          path: |
            ~/.buildozer
            examples/kivy/.buildozer
          key: build-cache-buildozer
      - name: Clean bleak recipe for cache
        if: steps.buildozer-cache.outputs.cache-hit == 'true'
        working-directory: examples/kivy
        run: buildozer android p4a -- clean-recipe-build --local-recipes $(pwd)/../../bleak/backends/p4android/recipes bleak
      - name: Build Kivy example
        working-directory: examples/kivy
        run: buildozer android debug
 

What changed

• Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
• Add a job timeout so a hung step cannot burn hours of runner time.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

• Dependency installs

This workflow runs 1 job per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow