Labeler workflow (kyegomez/RT-X)

The Labeler workflow from kyegomez/RT-X, explained and optimized by Latchkey.

CI health: A - excellent

Point runs-on at Latchkey and get job timeouts, self-healing for flaky steps, and up to 58% lower cost, applied automatically.

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Source: kyegomez/RT-X.github/workflows/label.ymlLicense MITView source

What it does

This is the Labeler workflow from the kyegomez/RT-X 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)

# This workflow will triage pull requests and apply a label based on the
# paths that are modified in the pull request.
#
# To use this workflow, you will need to set up a .github/labeler.yml
# file with configuration.  For more information, see:
# https://github.com/actions/labeler

name: Labeler
on: [pull_request_target]

jobs:
  label:

    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write

    steps:
    - uses: actions/labeler@v5
      with:
        repo-token: "${{ secrets.GITHUB_TOKEN }}"

The same workflow, on Latchkey

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

# This workflow will triage pull requests and apply a label based on the
# paths that are modified in the pull request.
#
# To use this workflow, you will need to set up a .github/labeler.yml
# file with configuration.  For more information, see:
# https://github.com/actions/labeler
 
name: Labeler
on: [pull_request_target]
 
jobs:
  label:
    timeout-minutes: 30
 
    runs-on: latchkey-small
    permissions:
      contents: read
      pull-requests: write
 
    steps:
    - uses: actions/labeler@v5
      with:
        repo-token: "${{ secrets.GITHUB_TOKEN }}"

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

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/labeler