Getting Involved

Would you like to help us make the Groovy programming language even better? There are many ways in which you can get involved, make a difference and help the Groovy development team to make Groovy even, well, groovier? We really appreciate and welcome contributions and you can help us by:

  • helping other users or discussing future language directions on the mailing-lists
  • contribute to discussions on Slack - this channel is not endorsed by the Apache Software Foundation, it's run by Groovy enthusiasts in the community for casual conversations and Q&A,
  • reporting or fixing issues you encounter in our bug tracker
  • documenting various aspects of the language or its APIs
  • writing a blog post about some Groovy feature or your Groovy usage
  • creating or commenting on the Groovy Enhancement Proposals which describe how we make significant changes to the language
  • improving this website
  • covering the code base with more tests to avoid future regressions,
  • and of course, by contributing bug fixes or new features

Discussing on the mailing-lists and forums

If you encounter a problem, want to discuss a new feature, share interesting findings, and more, then the mailing-lists are the place to go to start a conversation with the Groovy developers and other Groovy users. Discussions on the mailing list are archived. It's the place to go to for all formal discussions or if you want to search the archives.

Alternatively, for more casual conversations and Q&A, consider using the Slack channel. (This channel is not endorsed by the Apache Software Foundation; it's run by Groovy enthusiasts in the community.)

Reporting issues

If you are wanting to search existing issues, raise a new one or are keen to fix some existing issues, then you should become familiar with Groovy's Bug tracker.

Before submitting a new issue, we recommend you read our guide to reporting issues

Writing a blog post

Groovy has a lot of great features that some folks have never heard of. Why not write an interesting post about your favourite feature. You can use your own blogging platform or create a pull request for a new post in the blog part of our website which are published onto our own blogging site.

Improving the documentation

The documentation of the Groovy programming language comes in various forms:

To contribute to the Groovy reference documentation, this blog post gives all the details on how you can work on that documentation.

All the above is stored in our code repositories on Github, so having an account on Github would be ideal.

Contributing to this website is fairly easy, if you have a Github account already, as you can click on the Improve this doc buttons that you can see on all the pages of this website. So don't hesitate to help us improve it, fix typos, broken language, clarify complicated sections, add new material, etc.

Please check the following section for more information on how to contribute to our codebase.

Contributing code

If you know the area you want to contribute to, this is great, but if you are looking for some first contributions, the Groovy development team tries to maintain a list of tickets of possible easy contributions that could get you started on your journey to become a Groovy committer. Just raise your hand on the Groovy developer mailing-list to tell us about your desire to work on that ticket.

For more complicated tasks, the best approach is also to bring that to the attention of the Groovy developers, so they can give you some guidance on how best to tackle a particular problem, discuss implementation ideas and the semantics or scope of the proposed change.

Cloning the code base

To work on the Groovy code base, you should be proficient enough in git and you should have an account on Github to be able to create pull requests with your changes.

Please fork and create a local clone of your fork as explained in fork a repo.

Make sure you configure Git appropriately with the same email that you registered with on Github:

git config --global "YOUR NAME"
git config --global "YOUR EMAIL"

You can verify these are configured appropriately by running:

git config --list

Working on the code base

If you are working with the IntelliJ IDEA development environment, this screencast gives lots of details on how to setup your IDE.

Then, to work on the Groovy code base, to build and test Groovy, you can follow the instructions from the readme file in the Groovy repository.

The most important command you will have to run before sending your changes is the test command:

./gradlew test

For a successful contribution, all tests should be green!

Creating a pull request

Once you are satisfied with your changes:

  • commit your changes in your local branch
  • push your changes to your remote branch on Github
  • send us a pull request

Donating to Friends of Groovy Open Collective

As an independent initiative, members of the broader Groovy community have set up an open collective for Groovy: Friends of Groovy Open Collective This initiative is designed to complement the Apache project and the many contributions we get from our great community and supporters.

Build status

The Groovy sources are tested thanks to our continuous integration server.