Configlet workflow (exercism/python)

The Configlet workflow from exercism/python, explained and optimized by Latchkey.

CI health: C - fair

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Source: exercism/python.github/workflows/configlet.ymlLicense MITView source

What it does

This is the Configlet workflow from the exercism/python 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

workflow (.yml)

name: Configlet

on:
  pull_request:
  push:
    branches:
      - main
  workflow_dispatch:

permissions:
  contents: read

jobs:
  configlet:
    uses: exercism/github-actions/.github/workflows/configlet.yml@main

The same workflow, on Latchkey

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

name: Configlet
 
on:
  pull_request:
  push:
    branches:
      - main
  workflow_dispatch:
 
permissions:
  contents: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  configlet:
    timeout-minutes: 30
    uses: exercism/github-actions/.github/workflows/configlet.yml@main

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Cancel superseded runs when a branch or PR gets a newer push.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