Backport workflow (fastify/fastify)

The Backport workflow from fastify/fastify, explained and optimized by Latchkey.

What it does

This is the Backport workflow from the fastify/fastify 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: Backport
on:
  pull_request_target:
    types:
      - closed
      - labeled

permissions:
  contents: read

jobs:
  backport:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    if: >
      github.event.pull_request.merged
      && (
        github.event.action == 'closed'
        || (
          github.event.action == 'labeled'
          && contains(github.event.label.name, 'backport')
        )
      )
    name: Backport
    steps:
      - name: Backport
        uses: tibdex/backport@9565281eda0731b1d20c4025c43339fb0a23812e # v2.0.4
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}

The same workflow, on Latchkey

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

name: Backport
on:
  pull_request_target:
    types:
      - closed
      - labeled
 
permissions:
  contents: read
 
jobs:
  backport:
    timeout-minutes: 30
    runs-on: latchkey-small
    permissions:
      contents: write
      pull-requests: write
    if: >
      github.event.pull_request.merged
      && (
        github.event.action == 'closed'
        || (
          github.event.action == 'labeled'
          && contains(github.event.label.name, 'backport')
        )
      )
    name: Backport
    steps:
      - name: Backport
        uses: tibdex/backport@9565281eda0731b1d20c4025c43339fb0a23812e # v2.0.4
        with:
          github_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.