build workflow (charmbracelet/gum)

The build workflow from charmbracelet/gum, explained and optimized by Latchkey.

What it does

This is the build workflow from the charmbracelet/gum 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

on:
  push:
    branches:
      - main
  pull_request:

jobs:
  build:
    uses: charmbracelet/meta/.github/workflows/build.yml@main
    secrets:
      gh_pat: ${{ secrets.PERSONAL_ACCESS_TOKEN }}

The same workflow, on Latchkey

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

name: build
 
on:
  push:
    branches:
      - main
  pull_request:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    uses: charmbracelet/meta/.github/workflows/build.yml@main
    secrets:
      gh_pat: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
 

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• Cancel superseded runs when a branch or PR gets a newer push.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