Coverage report using Codecov workflow (holgern/pyedflib)

The Coverage report using Codecov workflow from holgern/pyedflib, explained and optimized by Latchkey.

What it does

This is the Coverage report using Codecov workflow from the holgern/pyedflib repository, a real project running GitHub Actions. It is shown here with attribution under its BSD-3-Clause license.

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

The workflow

name: Coverage report using Codecov
on: [push]
jobs:
  run:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest]
    env:
      OS: ${{ matrix.os }}
      PYTHON: '3.9'
    steps:
    - uses: actions/checkout@v4
    - name: Setup Python
      uses: actions/setup-python@v5
      with:
        python-version: 3.9
    - name: Generate coverage report
      run: |
        pip install pytest
        pip install pytest-cov
        pip install -e .
        pip install -r requirements-test.txt
        pytest --cov=./pyedflib/ --cov-report=xml --cov-config=.coveragerc
    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v5
      with:
        directory: .
        env_vars: OS,PYTHON
        fail_ci_if_error: true
        files: ./coverage.xml
        move_coverage_to_trash: true
        flags: unittests
        name: codecov-umbrella
        verbose: true

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 report using Codecov
on: [push]
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  run:
    timeout-minutes: 30
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest]
    env:
      OS: ${{ matrix.os }}
      PYTHON: '3.9'
    steps:
    - uses: actions/checkout@v4
    - name: Setup Python
      uses: actions/setup-python@v5
      with:
        cache: 'pip'
        python-version: 3.9
    - name: Generate coverage report
      run: |
        pip install pytest
        pip install pytest-cov
        pip install -e .
        pip install -r requirements-test.txt
        pytest --cov=./pyedflib/ --cov-report=xml --cov-config=.coveragerc
    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v5
      with:
        directory: .
        env_vars: OS,PYTHON
        fail_ci_if_error: true
        files: ./coverage.xml
        move_coverage_to_trash: true
        flags: unittests
        name: codecov-umbrella
        verbose: true
 

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.

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