Galaxy welcomes new development! This document briefly describes how to contribute to the core galaxy project - also checkout our 2013 Galaxy Community Conference presentation on the topic (video, presentation). For information on contributing more broadly to the Galaxy ecosystem and a deeper discussion of some of these points - please see the Develop section of the Galaxy Community Hub.
If you have an idea for a feature to add or an approach for a bugfix, it is best to communicate with Galaxy developers early. The most common venues for this are GitHub issues. Browse through existing GitHub issues and Trello cards and if one seems related, comment on it. We also maintain a tag on Github for smaller issues we believe would make the best entry points for new developers. Galaxy developers are generally available via IRC, Gitter and on the development mailing list.
If no existing Galaxy issue/Trello card seems appropriate, a new issue can be opened using this form.
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All changes to the core galaxy project should be made through pull requests to this repository (with just two exceptions outlined below).
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If you are new to Git, the Try Git tutorial is a good places to start. More learning resources are listed at https://help.github.com/articles/good-resources-for-learning-git-and-github/ .
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Make sure you have a free GitHub account.
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Fork the galaxy repository on GitHub to make your changes. (While many Galaxy instances track galaxy-dist, active development happens in the galaxy GitHub repository and this is where pull requests should be made). To keep your copy up to date with respect to the main repository, you need to frequently sync your fork:
$ git remote add upstream https://github.com/galaxyproject/galaxy $ git fetch upstream $ git checkout dev $ git merge upstream/dev
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Choose the correct branch to develop your changes against.
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Additions of new features to the code base should be pushed to the
dev
branch (git checkout dev
). -
Most bug fixes to previously release components (things in galaxy-dist) should be made against the recent
release_XX.XX
branch (git checkout release_XX.XX
). -
Serious security problems should not be fixed via pull request - please see the Galaxy security policies for information about responsibly disclosing security issues.
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If your changes modify code - please ensure the resulting files conform to Galaxy style guidelines.
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Galaxy contains hundreds of tests of different types and complexity and running each is difficult and probably not reasonable at this time (someday we will provide a holistic test procedure to make this possible). For now, please just review the running tests documentation and run any that seem relevant. Developers reviewing your pull request will be happy to help guide you to running the most relevant tests as part of the pull request review process and may request the output of these tests. You can run the continuous integration tests locally using
tox
, example:tox -e py27-lint,py27-unit
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Commit and push your changes to your fork.
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Open a pull request with these changes. You pull request message ideally should include:
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A description of why the changes should be made.
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A description of the implementation of the changes.
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A description of how to test the changes.
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The pull request should pass all the continuous integration tests which are automatically run by GitHub using e.g. Travis CI.
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Your pull request will be handled according to some rules.
For the most part, Galaxy tools should be published to the Tool Shed and not in this repository directly. If you are looking for migrated core tools that used to exist in this repository - please checkout the tools-iuc repository on GitHub.
More information about tool development can be found on the comunity hub.