CI workflow (smartbgp/yabgp)

The CI workflow from smartbgp/yabgp, explained and optimized by Latchkey.

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Source: smartbgp/yabgp.github/workflows/ci.ymlLicense Apache-2.0View source

What it does

This is the CI workflow from the smartbgp/yabgp repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

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

The workflow

workflow (.yml)

# This workflow installs Python dependencies and runs tests on Python 3.13
# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

name: CI

on:
  push:
    branches: [ "master" ]
  pull_request:
    branches: [ "master" ]

jobs:
  tests:

    name: Tests
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ ubuntu-latest, macos-latest, windows-latest ]
        python-version: [ "3.13" ]

    steps:
      - uses: actions/checkout@v4

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}

      - name: Set up uv
        uses: astral-sh/setup-uv@v5

      - name: Display Python version
        run: python -c "import sys; print(sys.version)"

      - name: Sync dependencies
        run: |
          uv --version
          uv sync --locked --group test --group dev

      - name: Run tests
        run: uv run pytest yabgp/tests/unit/ --tb=short -q

      - name: Lint
        run: uv run ruff check yabgp/

      - name: Type check
        run: uv run pyright -p pyrightconfig.json

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.

# This workflow installs Python dependencies and runs tests on Python 3.13
# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
name: CI
 
on:
  push:
    branches: [ "master" ]
  pull_request:
    branches: [ "master" ]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  tests:
    timeout-minutes: 30
 
    name: Tests
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ ubuntu-latest, macos-latest, windows-latest ]
        python-version: [ "3.13" ]
 
    steps:
      - uses: actions/checkout@v4
 
      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          cache: 'pip'
          python-version: ${{ matrix.python-version }}
 
      - name: Set up uv
        uses: astral-sh/setup-uv@v5
 
      - name: Display Python version
        run: python -c "import sys; print(sys.version)"
 
      - name: Sync dependencies
        run: |
          uv --version
          uv sync --locked --group test --group dev
 
      - name: Run tests
        run: uv run pytest yabgp/tests/unit/ --tb=short -q
 
      - name: Lint
        run: uv run ruff check yabgp/
 
      - name: Type check
        run: uv run pyright -p pyrightconfig.json

What changed

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 1 job (3 with the matrix expanded) 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