kotlin workflow (sqlc-dev/sqlc)

The kotlin workflow from sqlc-dev/sqlc, explained and optimized by Latchkey.

What it does

This is the kotlin workflow from the sqlc-dev/sqlc 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: kotlin
on:
  push:
    branches:
      - main
    paths-ignore:
      - 'docs/**'
      - '.readthedocs.yaml'
  pull_request:
    paths-ignore:
      - 'docs/**'
      - '.readthedocs.yaml'
jobs:
  build:
    if: false
    name: test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - uses: actions/setup-go@v6
        with:
          go-version: '1.26.4'
      - name: install ./...
        run: go install ./...
      - uses: actions/checkout@v7
        with:
          repository: sqlc-dev/sqlc-gen-kotlin
          path: kotlin
      - run: make test
        working-directory: kotlin
      - run: sqlc diff
        working-directory: kotlin/examples

The same workflow, on Latchkey

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

name: kotlin
on:
  push:
    branches:
      - main
    paths-ignore:
      - 'docs/**'
      - '.readthedocs.yaml'
  pull_request:
    paths-ignore:
      - 'docs/**'
      - '.readthedocs.yaml'
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    if: false
    name: test
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v7
      - uses: actions/setup-go@v6
        with:
          go-version: '1.26.4'
      - name: install ./...
        run: go install ./...
      - uses: actions/checkout@v7
        with:
          repository: sqlc-dev/sqlc-gen-kotlin
          path: kotlin
      - run: make test
        working-directory: kotlin
      - run: sqlc diff
        working-directory: kotlin/examples
 
 

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• Cancel superseded runs when a branch or PR gets a newer push.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

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