coverage workflow (cli99/llm-analysis)

The coverage workflow from cli99/llm-analysis, explained and optimized by Latchkey.

What it does

This is the coverage workflow from the cli99/llm-analysis 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

name: coverage
on: [push]
jobs:
  coverage:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ['3.8']
    steps:
      - name: Checkout repository
      - uses: actions/checkout@v4

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v4
        with:
          python-version: ${{ matrix.python-version }}

      - name: Install Poetry
        uses: snok/install-poetry@v1

      - name: Install dependencies
        run: poetry install

      - name: Generate Report
        run: |
          poetry run pytest --cov=./ --cov-report=xml

      - name: Upload Coverage to Codecov
        uses: codecov/codecov-action@v4
        with:
          token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
          fail_ci_if_error: true # optional (default = false)
          verbose: true # optional (default = false)
          files: ./coverage.xml

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: coverage
on: [push]
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  coverage:
    timeout-minutes: 30
    runs-on: latchkey-small
    strategy:
      matrix:
        python-version: ['3.8']
    steps:
      - name: Checkout repository
      - uses: actions/checkout@v4
 
      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v4
        with:
          cache: 'pip'
          python-version: ${{ matrix.python-version }}
 
      - name: Install Poetry
        uses: snok/install-poetry@v1
 
      - name: Install dependencies
        run: poetry install
 
      - name: Generate Report
        run: |
          poetry run pytest --cov=./ --cov-report=xml
 
      - name: Upload Coverage to Codecov
        uses: codecov/codecov-action@v4
        with:
          token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
          fail_ci_if_error: true # optional (default = false)
          verbose: true # optional (default = false)
          files: ./coverage.xml
 

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.

2 third-party actions are referenced by a movable tag. Pin them to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

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 per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow