Code Checks workflow (posit-dev/great-tables)

The Code Checks workflow from posit-dev/great-tables, 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.

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Source: posit-dev/great-tables.github/workflows/code-checks.yamlLicense MITView source

What it does

This is the Code Checks workflow from the posit-dev/great-tables 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: Code Checks

on:
  workflow_dispatch:
  push:
    branches: ['main', 'dev-*']
  pull_request:
  release:
    types: [published]

jobs:
  pre-commit:
    name: "Run pre-commit"
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - uses: actions/setup-python@v6
        with:
          python-version: "3.10"
      - uses: pre-commit/action@v3.0.1

  optional-deps:
    name: "Static check optional deps"
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - uses: actions/setup-python@v6
        with:
          python-version: "3.10"
      - run: |
          python .github/scripts/no_pandas.py great_tables _tbl_data.py data/__init__.py

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: Code Checks
 
on:
  workflow_dispatch:
  push:
    branches: ['main', 'dev-*']
  pull_request:
  release:
    types: [published]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  pre-commit:
    timeout-minutes: 30
    name: "Run pre-commit"
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v5
      - uses: actions/setup-python@v6
        with:
          cache: 'pip'
          python-version: "3.10"
      - uses: pre-commit/action@v3.0.1
 
  optional-deps:
    timeout-minutes: 30
    name: "Static check optional deps"
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v5
      - uses: actions/setup-python@v6
        with:
          cache: 'pip'
          python-version: "3.10"
      - run: |
          python .github/scripts/no_pandas.py great_tables _tbl_data.py data/__init__.py

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.

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.

This workflow runs 2 jobs 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 pre-commit/action