ci.yml workflow (ahmetb/go-linq)

The ci.yml workflow from ahmetb/go-linq, explained and optimized by Latchkey.

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Source: ahmetb/go-linq.github/workflows/ci.ymlLicense Apache-2.0View source

What it does

This is the ci.yml workflow from the ahmetb/go-linq repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

name: ci.yml

on:
  pull_request:
  push:
    branches:
      - main
      - master

permissions:
  contents: read

env:
  GO111MODULE: on

jobs:
  golangci:
    name: lint
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - uses: actions/setup-go@v6
        with:
          go-version: stable

      - name: golangci-lint
        uses: golangci/golangci-lint-action@v8
        with:
          version: v2.1

  build:
    name: Build and Test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - uses: actions/setup-go@v6
        with:
          go-version: 1.25

      - name: go vet
        run: go vet -x ./...

      - name: Check Formatting
        run: test -z "$(gofmt -s -l -w . | tee /dev/stderr)"

      - name: Run Tests
        run: go test -v ./...

      - name: Coverage (profile.cov)
        run: go test -covermode=count -coverprofile=profile.cov

      - name: Coveralls
        uses: coverallsapp/github-action@v2
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          file: profile.cov
          format: golang

The same workflow, on Latchkey

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

name: ci.yml
 
on:
  pull_request:
  push:
    branches:
      - main
      - master
 
permissions:
  contents: read
 
env:
  GO111MODULE: on
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  golangci:
    timeout-minutes: 30
    name: lint
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v5
 
      - uses: actions/setup-go@v6
        with:
          go-version: stable
 
      - name: golangci-lint
        uses: golangci/golangci-lint-action@v8
        with:
          version: v2.1
 
  build:
    timeout-minutes: 30
    name: Build and Test
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v5
 
      - uses: actions/setup-go@v6
        with:
          go-version: 1.25
 
      - name: go vet
        run: go vet -x ./...
 
      - name: Check Formatting
        run: test -z "$(gofmt -s -l -w . | tee /dev/stderr)"
 
      - name: Run Tests
        run: go test -v ./...
 
      - name: Coverage (profile.cov)
        run: go test -covermode=count -coverprofile=profile.cov
 
      - name: Coveralls
        uses: coverallsapp/github-action@v2
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          file: profile.cov
          format: golang

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.

2 third-party actions are referenced by a movable tag. Pin them to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

This workflow runs 2 jobs 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/checkout actions/setup-go golangci/golangci-lint-action