Request Copilot review workflow (xarray-contrib/xarray-spatial)

The Request Copilot review workflow from xarray-contrib/xarray-spatial, 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.

Grade your own workflow free or run it on Latchkey →

Source: xarray-contrib/xarray-spatial.github/workflows/copilot-review.ymlLicense MITView source

What it does

This is the Request Copilot review workflow from the xarray-contrib/xarray-spatial 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: Request Copilot review

on:
  pull_request_target:
    types: [opened, reopened, ready_for_review]

permissions:
  pull-requests: write

jobs:
  request-copilot-review:
    # Same-repo PRs only. author_association in the pull_request_target payload
    # reports CONTRIBUTOR for org members on same-repo branches, so head==base
    # is the reliable maintainer signal (it requires push access to the base repo).
    if: >-
      github.event.pull_request.draft == false &&
      github.event.pull_request.head.repo.full_name == github.event.pull_request.base.repo.full_name
    runs-on: ubuntu-latest
    steps:
      - name: Request Copilot review
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
          REPO: ${{ github.repository }}
        run: |
          gh api \
            --method POST \
            -H "Accept: application/vnd.github+json" \
            "/repos/${REPO}/pulls/${PR_NUMBER}/requested_reviewers" \
            -f "reviewers[]=Copilot"

The same workflow, on Latchkey

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

name: Request Copilot review
 
on:
  pull_request_target:
    types: [opened, reopened, ready_for_review]
 
permissions:
  pull-requests: write
 
jobs:
  request-copilot-review:
    timeout-minutes: 30
    # Same-repo PRs only. author_association in the pull_request_target payload
    # reports CONTRIBUTOR for org members on same-repo branches, so head==base
    # is the reliable maintainer signal (it requires push access to the base repo).
    if: >-
      github.event.pull_request.draft == false &&
      github.event.pull_request.head.repo.full_name == github.event.pull_request.base.repo.full_name
    runs-on: latchkey-small
    steps:
      - name: Request Copilot review
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
          REPO: ${{ github.repository }}
        run: |
          gh api \
            --method POST \
            -H "Accept: application/vnd.github+json" \
            "/repos/${REPO}/pulls/${PR_NUMBER}/requested_reviewers" \
            -f "reviewers[]=Copilot"

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.