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In the preparing patches section, note that it is possible to run CI tests via gitlab prior to submitting patches. Signed-off-by: Tim Small <tim@seoss.co.uk> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
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============
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Contributing
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============
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These are the basics steps you need to follow to contribute to
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libvirt software development.
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Repositories and external resources
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===================================
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The official upstream repository is kept in git
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(``https://gitlab.com/libvirt/libvirt``) and is browsable
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along with other libvirt-related repositories (e.g.
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libvirt-python) `online <https://gitlab.com/libvirt>`__.
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Patches to translations are maintained via the `Fedora Weblate
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service <https://translate.fedoraproject.org/projects/libvirt/libvirt>`__.
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If you want to contribute to translations of libvirt, join the appropriate
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language team in Weblate. Translation updates to libvirt will be merged
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during the feature freeze window.
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Working with the code
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=====================
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In general you should base your work upon the git master branch.
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The `"Git checkout" section <compiling.html#git-checkout>`__
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of the libvirt installation instructions give an overview of the
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compilation process.
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Optionally, `Clangd with libvirt <clangd.html>`__ can be used to
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navigate the code base etc. within most code editors (and IDEs).
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Preparing patches
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=================
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Make sure your patches apply against the libvirt git master
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branch. The backporting of changes to existing releases is
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typically carried out by downstream users at their discretion
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after code is merged into the upstream git.
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Run the automated tests on your code before submitting any
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changes. That is:
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::
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$ ninja test
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These tests help making sure that your changes don't introduce
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regressions in libvirt, as well as validating that any new code
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follows the project's `coding style <coding-style.html>`__.
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If you're going to submit multiple patches, the automated tests
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must pass **after each patch**, not just after the last one.
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Update tests and/or documentation, particularly if you are
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adding a new feature or changing the output of a program, and
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don't forget to update the `release notes <news.html>`__ if your
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changes are significant and user-visible.
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To test across a variety of build platforms prior to submitting
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your changes, you may create your own fork of the project on
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gitlab. This will give you access to (a subset of) libvirt's
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`continuous integration <ci.html>`__ test suite.
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Please note that you should still follow the instructions below,
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rather than following gitlab's prompts to open a "merge request".
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Submitting patches
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==================
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Libvirt uses a mailing list based development workflow.
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While preparing your patches for submissions, make sure you
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follow the `best practices <best-practices.html>`__ and, once
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you're satisfied with the result, go ahead and
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`submit your patches <submitting-patches.html>`__.
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Developer Certificate of Origin
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===============================
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Contributors to libvirt projects **must** assert that they are
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in compliance with the `Developer Certificate of Origin
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1.1 <https://developercertificate.org/>`__. This is achieved by
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adding a "Signed-off-by" line containing the contributor's name
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and e-mail to every commit message. The presence of this line
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attests that the contributor has read the above lined DCO and
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agrees with its statements.
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Further reading
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===============
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This page only covers the very basics, so it's recommended that
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you also take a look at the following documents:
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- `Programming languages <programming-languages.html>`__
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- `Advanced test suite usage <advanced-tests.html>`__
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- `Adoption of GLib APIs <glib-adoption.html>`__
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- `Committer guidelines <committer-guidelines.html>`__
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- `Contributing to libvirt <contribute.html>`__
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