CI workflow (nateshmbhat/pyttsx3)
The CI workflow from nateshmbhat/pyttsx3, explained and optimized by Latchkey.
CI health: F - at risk
Point runs-on at Latchkey and get caching, run de-duplication, job timeouts, SHA-pinned actions, self-healing for flaky steps, and up to 58% lower cost, applied automatically.
What it does
This is the CI workflow from the nateshmbhat/pyttsx3 repository, a real project running GitHub Actions. It is shown here with attribution under its MPL-2.0 license.
Below, Latchkey shows a faster, safer version produced by its optimization engine.
The workflow
# This workflow will upload a Python Package using Twine when a release is created.
# https://help.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions#publishing-to-package-registries
# CAUTION: Renaming this file will break Trusted Publishing to PyPI.
# https://github.com/pypa/gh-action-pypi-publish
name: CI
on:
push:
branches: [master]
pull_request:
branches: [master]
release:
types: [created] # Only publish on tagged releases
jobs:
pre-commit:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v6
- run: pipx install pre-commit
- run: pre-commit install
- run: pre-commit run --all-files
test:
needs: [pre-commit]
strategy:
fail-fast: false
matrix:
os: [macos-latest, ubuntu-latest, windows-latest]
python-version: ['3.10', '3.12', '3.14', '3.14t']
exclude: # https://github.com/nateshmbhat/pyttsx3/pull/430
- os: windows-latest
python-version: '3.14t'
include:
- os: macos-26
python-version: '3.x'
runs-on: ${{ matrix.os }}
steps:
- if: runner.os == 'Linux'
run: sudo apt-get update -q -q && sudo apt-get install --yes espeak-ng libespeak1
- if: runner.os == 'macOS'
run: brew install espeak-ng
- name: Download and install eSpeak-NG
if: runner.os == 'Windows'
shell: pwsh
run: |
Invoke-WebRequest -Uri "https://github.com/espeak-ng/espeak-ng/releases/download/1.51/espeak-ng-X64.msi" -OutFile "espeak-ng.msi"
Start-Process msiexec.exe -ArgumentList '/i espeak-ng.msi /quiet /norestart' -Wait
# dir "$env:ProgramFiles\eSpeak NG"
$env:Path += ";$env:ProgramFiles\eSpeak NG"
espeak-ng --version
- if: runner.os != 'Windows'
run: espeak-ng --version
- uses: actions/checkout@v6
- uses: actions/setup-python@v6
with:
python-version: ${{ matrix.python-version }}
allow-prereleases: true
- name: Install dependencies
run: |
pip install --upgrade pip
pip install pytest pytest-run-parallel
pip install --editable .
- timeout-minutes: 15 # Save resources while our pytests are hanging
run: pytest --full-trace -s -vvv --strict
- if: runner.os == 'Linux'
timeout-minutes: 15 # Save resources while our pytests are hanging
run: pytest --full-trace --iterations=8 -s --strict
#- timeout-minutes: 15 # Save resources while our pytests are hanging
# env:
# PYTEST_RUN_PARALLEL_VERBOSE: 1
# run: pytest --full-trace --parallel-threads=auto --strict tests/test_engines.py || true
#- timeout-minutes: 15 # Save resources while our pytests are hanging
# env:
# PYTEST_RUN_PARALLEL_VERBOSE: 1
# run: pytest --full-trace --parallel-threads=auto --strict tests/test_pyttsx3.py || true
build:
runs-on: ubuntu-latest
needs: [test] # This ensures tests pass before build
permissions:
id-token: write
steps:
- uses: actions/checkout@v6
- name: Set up Python
uses: actions/setup-python@v6
with:
python-version: '3.x'
- name: Install dependencies
run: |
pip install --upgrade pip
pip install build
- name: Clean previous builds
run: |
rm -rf dist
- name: Build package
run: |
python -m build
pipx run twine check --strict dist/*
- name: Upload dist
uses: actions/upload-artifact@v6
with:
name: dist
path: dist
deploy:
needs: [build]
runs-on: ubuntu-latest
environment:
name: "pypi"
url: https://pypi.org/p/pyttsx3
permissions:
id-token: write # IMPORTANT: this permission is mandatory for trusted publishing
if: github.event_name == 'release' && github.event.action == 'created' # Only on release creation
steps:
- name: Download dist
uses: actions/download-artifact@v7
with:
name: dist
path: dist
- run: pipx run twine check --strict dist/*
- name: Publish package distributions to PyPI
uses: pypa/gh-action-pypi-publish@release/v1
with:
print-hash: 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.
# This workflow will upload a Python Package using Twine when a release is created. # https://help.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions#publishing-to-package-registries # CAUTION: Renaming this file will break Trusted Publishing to PyPI. # https://github.com/pypa/gh-action-pypi-publish name: CI on: push: branches: [master] pull_request: branches: [master] release: types: [created] # Only publish on tagged releases concurrency: group: ${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true jobs: pre-commit: timeout-minutes: 30 runs-on: latchkey-small steps: - uses: actions/checkout@v6 - run: pipx install pre-commit - run: pre-commit install - run: pre-commit run --all-files test: timeout-minutes: 30 needs: [pre-commit] strategy: fail-fast: false matrix: os: [macos-latest, ubuntu-latest, windows-latest] python-version: ['3.10', '3.12', '3.14', '3.14t'] exclude: # https://github.com/nateshmbhat/pyttsx3/pull/430 - os: windows-latest python-version: '3.14t' include: - os: macos-26 python-version: '3.x' runs-on: ${{ matrix.os }} steps: - if: runner.os == 'Linux' run: sudo apt-get update -q -q && sudo apt-get install --yes espeak-ng libespeak1 - if: runner.os == 'macOS' run: brew install espeak-ng - name: Download and install eSpeak-NG if: runner.os == 'Windows' shell: pwsh run: | Invoke-WebRequest -Uri "https://github.com/espeak-ng/espeak-ng/releases/download/1.51/espeak-ng-X64.msi" -OutFile "espeak-ng.msi" Start-Process msiexec.exe -ArgumentList '/i espeak-ng.msi /quiet /norestart' -Wait # dir "$env:ProgramFiles\eSpeak NG" $env:Path += ";$env:ProgramFiles\eSpeak NG" espeak-ng --version - if: runner.os != 'Windows' run: espeak-ng --version - uses: actions/checkout@v6 - uses: actions/setup-python@v6 with: cache: 'pip' python-version: ${{ matrix.python-version }} allow-prereleases: true - name: Install dependencies run: | pip install --upgrade pip pip install pytest pytest-run-parallel pip install --editable . - timeout-minutes: 15 # Save resources while our pytests are hanging run: pytest --full-trace -s -vvv --strict - if: runner.os == 'Linux' timeout-minutes: 15 # Save resources while our pytests are hanging run: pytest --full-trace --iterations=8 -s --strict #- timeout-minutes: 15 # Save resources while our pytests are hanging # env: # PYTEST_RUN_PARALLEL_VERBOSE: 1 # run: pytest --full-trace --parallel-threads=auto --strict tests/test_engines.py || true #- timeout-minutes: 15 # Save resources while our pytests are hanging # env: # PYTEST_RUN_PARALLEL_VERBOSE: 1 # run: pytest --full-trace --parallel-threads=auto --strict tests/test_pyttsx3.py || true build: timeout-minutes: 30 runs-on: latchkey-small needs: [test] # This ensures tests pass before build permissions: id-token: write steps: - uses: actions/checkout@v6 - name: Set up Python uses: actions/setup-python@v6 with: cache: 'pip' python-version: '3.x' - name: Install dependencies run: | pip install --upgrade pip pip install build - name: Clean previous builds run: | rm -rf dist - name: Build package run: | python -m build pipx run twine check --strict dist/* - name: Upload dist uses: actions/upload-artifact@v6 with: name: dist path: dist deploy: timeout-minutes: 30 needs: [build] runs-on: latchkey-small environment: name: "pypi" url: https://pypi.org/p/pyttsx3 permissions: id-token: write # IMPORTANT: this permission is mandatory for trusted publishing if: github.event_name == 'release' && github.event.action == 'created' # Only on release creation steps: - name: Download dist uses: actions/download-artifact@v7 with: name: dist path: dist - run: pipx run twine check --strict dist/* - name: Publish package distributions to PyPI uses: pypa/gh-action-pypi-publish@release/v1 with: print-hash: true
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 useslatchkey-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.
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 4 jobs (15 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.