Presubmit workflow (googleanalytics/google-analytics-mcp)

The Presubmit workflow from googleanalytics/google-analytics-mcp, explained and optimized by Latchkey.

What it does

This is the Presubmit workflow from the googleanalytics/google-analytics-mcp 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

# Runs tests on pull requests for main
permissions: read-all
name: Presubmit
on:
  pull_request:
    branches:
      - main
jobs:
  test:
    strategy:
      matrix:
        python-version: ["3.10", "3.11", "3.12", "3.13"]
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
      with:
        persist-credentials: false
    - name: Set up Python
      uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
      with:
        python-version: ${{ matrix.python-version }}
        cache: 'pip'

    - name: Install nox
      run: pip install -e .[dev]

    - name: Check formatting
      run: nox -s lint
    - name: Run tests
      run: nox -s tests-${{ matrix.python-version }}

The same workflow, on Latchkey

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

# Runs tests on pull requests for main
permissions: read-all
name: Presubmit
on:
  pull_request:
    branches:
      - main
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  test:
    timeout-minutes: 30
    strategy:
      matrix:
        python-version: ["3.10", "3.11", "3.12", "3.13"]
    runs-on: latchkey-small
    steps:
    - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
      with:
        persist-credentials: false
    - name: Set up Python
      uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
      with:
        python-version: ${{ matrix.python-version }}
        cache: 'pip'
 
    - name: Install nox
      run: pip install -e .[dev]
 
    - name: Check formatting
      run: nox -s lint
    - name: Run tests
      run: nox -s tests-${{ matrix.python-version }}
 

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• Cancel superseded runs when a branch or PR gets a newer push.
• Add a job timeout so a hung step cannot burn hours of runner time.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

• Dependency installs

This workflow runs 1 job (4 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