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Lint workflow (hsahovic/poke-env)

The Lint workflow from hsahovic/poke-env, explained and optimized by Latchkey.

B

CI health: B - good

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Source: hsahovic/poke-env.github/workflows/lint.ymlLicense MITView source

What it does

This is the Lint workflow from the hsahovic/poke-env repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

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

The workflow

workflow (.yml)
name: Lint
on:
  push:
    branches:
      - "master"
  pull_request:
    branches:
      - "master"

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}

jobs:
  lint:
    runs-on: ubuntu-latest
    timeout-minutes: 10

    steps:
      - name: Checkout repository code
        uses: actions/checkout@v7

      # Setup Python (faster than using Python container)
      - name: Setup Python
        uses: actions/setup-python@v6
        with:
          python-version: "3.14"

      - name: Setup uv
        uses: astral-sh/setup-uv@v7
        with:
          enable-cache: true

      - name: Install dependencies
        run: uv sync --dev

      - name: Download Pandoc
        run: |
          wget https://github.com/jgm/pandoc/releases/download/3.1.9/pandoc-3.1.9-linux-amd64.tar.gz
          tar xvzf pandoc-3.1.9-linux-amd64.tar.gz --strip-components 2 -C /usr/local/bin

      - name: Run black
        run: uv run black --check src/ unit_tests/ integration_tests/

      - name: Run flake8
        run: uv run flake8 src/ unit_tests/ integration_tests/

      - name: Run isort
        run: uv run isort --check .

      - name: Run mypy
        run: uv run mypy src

      - name: Validate docs links
        run: uv run python scripts/check_docs_links.py

      - name: Build docs (strict)
        run: |
            LC_ALL=C LANG=C uv run python -m sphinx -b html -W docs/source docs/_build/html

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: Lint
on:
  push:
    branches:
      - "master"
  pull_request:
    branches:
      - "master"
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
 
jobs:
  lint:
    runs-on: latchkey-small
    timeout-minutes: 10
 
    steps:
      - name: Checkout repository code
        uses: actions/checkout@v7
 
      # Setup Python (faster than using Python container)
      - name: Setup Python
        uses: actions/setup-python@v6
        with:
          cache: 'pip'
          python-version: "3.14"
 
      - name: Setup uv
        uses: astral-sh/setup-uv@v7
        with:
          enable-cache: true
 
      - name: Install dependencies
        run: uv sync --dev
 
      - name: Download Pandoc
        run: |
          wget https://github.com/jgm/pandoc/releases/download/3.1.9/pandoc-3.1.9-linux-amd64.tar.gz
          tar xvzf pandoc-3.1.9-linux-amd64.tar.gz --strip-components 2 -C /usr/local/bin
 
      - name: Run black
        run: uv run black --check src/ unit_tests/ integration_tests/
 
      - name: Run flake8
        run: uv run flake8 src/ unit_tests/ integration_tests/
 
      - name: Run isort
        run: uv run isort --check .
 
      - name: Run mypy
        run: uv run mypy src
 
      - name: Validate docs links
        run: uv run python scripts/check_docs_links.py
 
      - name: Build docs (strict)
        run: |
            LC_ALL=C LANG=C uv run python -m sphinx -b html -W docs/source docs/_build/html

What changed

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:

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

actions/checkout actions/setup-python astral-sh/setup-uv