Linting workflow (TorchSim/torch-sim)

The Linting workflow from TorchSim/torch-sim, explained and optimized by Latchkey.

What it does

This is the Linting workflow from the TorchSim/torch-sim 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: Linting

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  prek:
    runs-on: ubuntu-latest
    steps:
      - name: Check out repo
        uses: actions/checkout@v5

      - name: Run prek
        uses: j178/prek-action@v1

The same workflow, on Latchkey

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

name: Linting
 
on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  prek:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - name: Check out repo
        uses: actions/checkout@v5
 
      - name: Run prek
        uses: j178/prek-action@v1
 

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• Cancel superseded runs when a branch or PR gets a newer push.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

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