What's this?

This is a tool to automate publishing of pub packages from GitHub actions.

Conventions and setup

When run from a PR, this tool will validate the package pubspecs and changelogs and indicate whether the criteria for publishing has been met. Generally, each PR should add a new entry to the changelog, rev the pubspec version, and the changelog version and pubspec version should agree.

When run in response to a git tag event (a tag with a pattern like v1.2.3 or name_v1.2.3 for monorepos), this tool will publish the indicated package.

Pre-release versions

Pre-release versions (aka, '1.2.3-dev') are handled specially; this tool will validate the package but will not auto-publish it. This can be used to accumulate several changes and later publish them as a group.

Disabling auto-publishing

In order to disable package validation and auto-publishing, add the publish_to: none key to your pubspec.

PR branch actions

For PRs, this tool:

• determines repo packages
• validates that the changelog version equals the pubspec version
• performs a dart pub publish --dry-run

Git tag actions

In response to a git tag event, this tool:

• validates the tag is well-formed
• determines the indicated package
• attempts to publish that package (dart pub publish --force)

Mono-repos

This tool can work with either single package repos or with mono-repos (repos containing several packages). It will scan for and detect packages in a mono repo; to omit packages from validation and auto-publishing, add a publish_to: none key to its pubspec.

For single package repos, the tag pattern should be v1.2.3. For mono-repos, the tag pattern must be prefixed with the package name, e.g. foo-v1.2.3.

Integrating this tool into a repo

• copy the yaml below into a .github/workflows/publish.yaml file in your repo
• update the target branch below if necessary (currently, main)
• if publishing from a mono-repo, adjust the ‘tags’ line below to tags: [ '[A-z]+-v[0-9]+.[0-9]+.[0-9]+' ]
• from the pub.dev admin page of your package, enable publishing from GitHub Actions

# A CI configuration to auto-publish pub packages.

name: Publish

on:
  pull_request:
    branches: [ main ]
    types: [opened, synchronize, reopened, labeled, unlabeled]
  push:
    tags: [ 'v[0-9]+.[0-9]+.[0-9]+' ]

jobs:
  publish:
    uses: dart-lang/ecosystem/.github/workflows/publish.yaml@main

Publishing from a specific version of the SDK

Callers may optionally specify the version of the SDK to use when publishing a package. This can be useful if your package has a very recent minimum SDK constraint. This is done via the sdk input parameter. Note that this parameter is not required; it defaults to stable - using the most recent stable release of the Dart SDK. To pass this value:

jobs:
  publish:
    uses: dart-lang/ecosystem/.github/workflows/publish.yml@main
    with:
      sdk: beta

Workflow docs

The description of the common workflow for repos using this tool can be found at https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.