Lint Python Code workflow (facebookresearch/large_concept_model)

The Lint Python Code workflow from facebookresearch/large_concept_model, explained and optimized by Latchkey.

CI health: C - fair

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Source: facebookresearch/large_concept_model.github/workflows/lint_and_test.yamlLicense MITView source

What it does

This is the Lint Python Code workflow from the facebookresearch/large_concept_model 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 Python Code

on:
  # Trigger the workflow on push to master or any pull request
  push:
  pull_request:
    branches:
      - main

jobs:
  lock_file:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uv lock --locked
  linting:
    runs-on: ubuntu-latest
    needs: [lock_file]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uvx ruff check .
  formatting:
    runs-on: ubuntu-latest
    needs: [lock_file]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uvx ruff check --select I .
      - run: uvx ruff format --check .
  type_consistency:
    runs-on: ubuntu-latest
    needs: [lock_file]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uvx --with=types-PyYAML mypy
  tests:
    runs-on: ubuntu-latest
    needs: [lock_file]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uv run --extra cpu --extra eval --extra data pytest -v --full-trace
  build:
    runs-on: ubuntu-latest
    needs: [lock_file, linting, formatting, type_consistency, tests]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uv build

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: Lint Python Code
 
on:
  # Trigger the workflow on push to master or any pull request
  push:
  pull_request:
    branches:
      - main
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  lock_file:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uv lock --locked
  linting:
    timeout-minutes: 30
    runs-on: latchkey-small
    needs: [lock_file]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uvx ruff check .
  formatting:
    timeout-minutes: 30
    runs-on: latchkey-small
    needs: [lock_file]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uvx ruff check --select I .
      - run: uvx ruff format --check .
  type_consistency:
    timeout-minutes: 30
    runs-on: latchkey-small
    needs: [lock_file]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uvx --with=types-PyYAML mypy
  tests:
    timeout-minutes: 30
    runs-on: latchkey-small
    needs: [lock_file]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uv run --extra cpu --extra eval --extra data pytest -v --full-trace
  build:
    timeout-minutes: 30
    runs-on: latchkey-small
    needs: [lock_file, linting, formatting, type_consistency, tests]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup
      - run: uv build

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.
Add a job timeout so a hung step cannot burn hours of runner time.

This workflow runs 6 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