Check out the PklDoc

.github/workflows/hello.pkl

amends "package:https://pkg.pkl-lang.org/github.com/jamesward/pklgha/[email protected]#/GitHubAction.pkl"

on {
  push {

  }
}

jobs {
  ["hello"] = new {
    `runs-on` = "ubuntu-latest"

    steps {
      new {
        name = "checkout"
        uses = "actions/checkout@v4"
      }
    }
  }
}

Generate the Yaml:

pkl eval -f yaml -o .github/workflows/hello.yaml .github/workflows/hello.pkl

• Multiple workflows in a single pkl: https://github.com/jamesward/easyracer/blob/main/.github/workflows/clients.pkl
• Multi-architecture Docker images: https://github.com/jamesward/easyracer/blob/main/.github/workflows/scenario-server.pkl

1. Enable publishing GitHub Pages from GitHub Actions via https://github.com/<your org>/<your repo>/settings/pages
2. Create .github/workflows/release.pkl

   amends "package:https://pkg.pkl-lang.org/github.com/jamesward/pklgha/[email protected]#/GitHubActionPkl.pkl"
   
   action = "release"
   

3. Create the GitHub Action Yaml:

   pkl eval -f yaml -o .github/workflows/release.yaml .github/workflows/release.pkl
   

Update

pkl eval -f yaml -o .github/workflows/release.yaml .github/workflows/release.pkl

Release

1. Update the version above
2. Tag and push

   git tag [email protected]
   git push --atomic origin main [email protected]