qubes-doc/developer/code/source-code.md

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---
layout: doc
title: Source Code
permalink: /doc/source-code/
redirect_from:
- /en/doc/source-code/
- /doc/SourceCode/
- /wiki/SourceCode/
---
Qubes Source Code Repositories
==============================
All the Qubes code is kept in Git repositories. We have divided the project into
several components, each of which has its own separate repository, for example:
* `core-admin.git` -- The core Qubes infrastructure, responsible for VM
management, VM templates, fs sharing, etc.
* `gui-daemon.git` -- GUI virtualization, Dom0 side.
* `gui-agent-linux.git` -- GUI virtualization, Linux VM side.
* `linux-template-builder.git` -- Scripts and other files used to create Qubes
template images.
All of our repositories are available under the [QubesOS GitHub account].
To clone a repository:
~~~
git clone https://github.com/QubesOS/qubes-<repo_name>.git <repo_name>
~~~
e.g.:
~~~
git clone https://github.com/QubesOS/qubes-core-admin.git core-admin
~~~
To build Qubes you do not need to download all these repositories.
If you use [qubes builder] you can specify *what* you want to build, and download only the repositories needed to build that target.
If you really do want to clone **all** of the repositories, you can use these commands:
~~~
curl "https://api.github.com/orgs/QubesOS/repos?page=1&per_page=100" | grep -e 'clone_url*' | cut -d \" -f 4 | xargs -L1 git clone
curl "https://api.github.com/orgs/QubesOS/repos?page=2&per_page=100" | grep -e 'clone_url*' | cut -d \" -f 4 | xargs -L1 git clone
~~~
To update (git fetch) **all** of these repositories :
~~~
find . -mindepth 1 -maxdepth 1 -type d -exec git -C {} fetch --tags --recurse-submodules=on-demand --all \;
~~~
(Alternatively, you can pull instead of just fetching.)
How to Send Patches
-------------------
If you want to [contribute code] to the project, there are two ways. Whichever
method you choose, you must [sign your code] before it can be accepted.
* **Preferred**: Use GitHub's [fork & pull requests].
Opening a pull request on GitHub greatly eases the code review and tracking
process. In addition, especially for bigger changes, it's a good idea to send
a message to the [qubes-devel mailing list] in order to notify people who
do not receive GitHub notifications.
* Send a patch to the [qubes-devel mailing list] (`git format-patch`).
1. Make all the changes in your working directory, i.e. edit files, move them
around (you can use 'git mv' for this), etc.
2. Add the changes and commit them (`git add`, `git commit`). Never mix
different changes into one commit! Write a good description of the commit.
The first line should contain a short summary, and then, if you feel like
more explanations are needed, enter an empty new line, and then start the
long, detailed description (optional).
3. Test your changes NOW: check if RPMs build fine, etc.
4. Create the patch using `git format-patch`. This has an advantage over
`git diff`, because the former will also include your commit message, your
name and email, so that *your* name will be used as a commit's author.
5. Send your patch to `qubes-devel`. Start the message subject with
`[PATCH]`.
[QubesOS GitHub account]: https://github.com/QubesOS/
[contribute code]: /doc/contributing/#contributing-code
[sign your code]: /doc/code-signing/
[fork & pull requests]: https://guides.github.com/activities/forking/
[qubes-devel mailing list]: /support/#qubes-devel
[qubes builder]: /doc/QubesBuilder/