CI workflow (ArtificialAnalysis/Stirrup)

The CI workflow from ArtificialAnalysis/Stirrup, explained and optimized by Latchkey.

CI health: F - at risk

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Source: ArtificialAnalysis/Stirrup.github/workflows/ci.yamlLicense MITView source

What it does

This is the CI workflow from the ArtificialAnalysis/Stirrup 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: CI

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main
  workflow_call:

jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: "Set up Python"
        uses: actions/setup-python@v6
        with:
          python-version-file: ".python-version"

      - name: Install uv
        uses: astral-sh/setup-uv@v6
        with:
          enable-cache: true

      - name: Sync dependencies
        run: uv sync --locked --all-extras --dev

      - name: Run ruff format check
        run: uv run ruff format --check .

      - name: Run ruff check
        run: uv run ruff check --output-format=github .

  type-check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: "Set up Python"
        uses: actions/setup-python@v6
        with:
          python-version-file: ".python-version"

      - name: Install uv
        uses: astral-sh/setup-uv@v6
        with:
          enable-cache: true

      - name: Sync dependencies
        run: uv sync --locked --all-extras --dev

      - name: Run type checking
        run: uv run ty check --output-format github

The same workflow, on Latchkey

Estimated ~20% faster on cache hits, plus fewer wasted runs and a safer supply chain. Added and changed lines are highlighted.

name: CI
 
on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main
  workflow_call:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  lint:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v5
 
      - name: "Set up Python"
        uses: actions/setup-python@v6
        with:
          cache: 'pip'
          python-version-file: ".python-version"
 
      - name: Install uv
        uses: astral-sh/setup-uv@v6
        with:
          enable-cache: true
 
      - name: Sync dependencies
        run: uv sync --locked --all-extras --dev
 
      - name: Run ruff format check
        run: uv run ruff format --check .
 
      - name: Run ruff check
        run: uv run ruff check --output-format=github .
 
  type-check:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v5
 
      - name: "Set up Python"
        uses: actions/setup-python@v6
        with:
          cache: 'pip'
          python-version-file: ".python-version"
 
      - name: Install uv
        uses: astral-sh/setup-uv@v6
        with:
          enable-cache: true
 
      - name: Sync dependencies
        run: uv sync --locked --all-extras --dev
 
      - name: Run type checking
        run: uv run ty check --output-format github

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.
Cancel superseded runs when a branch or PR gets a newer push.
Cache dependency installs on the setup step so they are served from cache.
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 2 jobs per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout actions/setup-python astral-sh/setup-uv