main workflow (asottile/babi)

The main workflow from asottile/babi, explained and optimized by Latchkey.

What it does

This is the main workflow from the asottile/babi 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: main

on:
  push:
    branches: [main, test-me-*]
    tags: '*'
  pull_request:

jobs:
  main:
    uses: asottile/workflows/.github/workflows/tox.yml@v1.8.1
    with:
      env: '["py311", "py312", "py313"]'

The same workflow, on Latchkey

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

name: main
 
on:
  push:
    branches: [main, test-me-*]
    tags: '*'
  pull_request:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  main:
    timeout-minutes: 30
    uses: asottile/workflows/.github/workflows/tox.yml@v1.8.1
    with:
      env: '["py311", "py312", "py313"]'
 

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• Cancel superseded runs when a branch or PR gets a newer push.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.

1 third-party action is referenced by a movable tag. Pin it to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

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