pre-commit checks workflow (alvarobartt/hf-mem)

The pre-commit checks workflow from alvarobartt/hf-mem, explained and optimized by Latchkey.

What it does

This is the pre-commit checks workflow from the alvarobartt/hf-mem 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

name: pre-commit checks

on:
  push:
    branches:
      - main
  pull_request:

jobs:
  pre-commit:
    runs-on: ubuntu-24.04
    concurrency:
      group: ${{ github.workflow }}-${{ github.ref }}

    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Install the latest version of uv
        uses: astral-sh/setup-uv@v7
        with:
          version: "latest"

      - name: Set up Python with uv
        run: uv venv --python 3.11

      - name: Install dependencies
        run: |
          source .venv/bin/activate
          uv pip install --group lint

      - name: Run pre-commit checks
        run: |
          source .venv/bin/activate
          uv run pre-commit run --all-files

The same workflow, on Latchkey

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

name: pre-commit checks
 
on:
  push:
    branches:
      - main
  pull_request:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  pre-commit:
    timeout-minutes: 30
    runs-on: latchkey-small
    concurrency:
      group: ${{ github.workflow }}-${{ github.ref }}
 
    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0
 
      - name: Install the latest version of uv
        uses: astral-sh/setup-uv@v7
        with:
          version: "latest"
 
      - name: Set up Python with uv
        run: uv venv --python 3.11
 
      - name: Install dependencies
        run: |
          source .venv/bin/activate
          uv pip install --group lint
 
      - name: Run pre-commit checks
        run: |
          source .venv/bin/activate
          uv run pre-commit run --all-files
 

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• Cancel superseded runs when a branch or PR gets a newer push.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.

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