# Contributing to Redox

**Thank you for your interest in contributing to Redox!**

This document will outline the basics of where to start if you wish to contribute to the project. There are many ways to help us out and and we appreciate all of them. We look forward to **your contribution!**

## Code Of Conduct

We follow the [Rust Code Of Conduct](https://www.rust-lang.org/policies/code-of-conduct).

## License

In general, your contributions to Redox are governed by the [MIT License](https://en.wikipedia.org/wiki/MIT_License). Each project repository has a `LICENSE` file that provides the license terms for that project.

Please review the `LICENSE` file for the project you are contributing to.

[This](https://doc.redox-os.org/book/ch01-02-philosophy.html) page we explain why we use the MIT license.

## Chat

Join us on [Matrix Chat](https://doc.redox-os.org/book/ch13-01-chat.html) to discuss issues or ask questions.

## Important Places to Contribute

(Before starting to contribute you **must** read the [Website FAQ](https://www.redox-os.org/faq/) and the [Redox Book](https://doc.redox-os.org/book/))

You can contribute to the Redox documentation and code on the following repositories:

(The order is based on difficulty, easy things first)

- [Website](https://gitlab.redox-os.org/redox-os/website)
- [Book](https://gitlab.redox-os.org/redox-os/book) - High-level documentation
- [Build System Configuration](https://gitlab.redox-os.org/redox-os/redox) - Our main repository
- [Cookbook](https://gitlab.redox-os.org/redox-os/cookbook) - Software Ports System
- [Orbital](https://gitlab.redox-os.org/redox-os/orbital) - Display Server and Window Manager
- [pkgutils](https://gitlab.redox-os.org/redox-os/pkgutils) - Package Manager
- [resist](https://gitlab.redox-os.org/redox-os/resist) - Redox System Interface Specifications and Tests (also has POSIX tests)
- [acid](https://gitlab.redox-os.org/redox-os/acid) - Redox Test Suite
- [relibc](https://gitlab.redox-os.org/redox-os/relibc) - Redox C Library
- [libredox](https://gitlab.redox-os.org/redox-os/libredox) - Redox System Library
- [netstack](https://gitlab.redox-os.org/redox-os/netstack) - Network Stack
- [Bootloader](https://gitlab.redox-os.org/redox-os/bootloader)
- [Drivers](https://gitlab.redox-os.org/redox-os/drivers) - Device Drivers
- [Kernel](https://gitlab.redox-os.org/redox-os/kernel)

To see all Redox repositories open [this](https://gitlab.redox-os.org/redox-os) link.

### Skill Levels

If you don't know programming:

- Write documentation
- Use and test Redox, fill issues for bugs or needed features (please verify the repository issues before)

If you don't know how to code in Rust, but know in other programming languages:

- Web development on the website (we don't accept JavaScript code)
- Write unit tests (may require minimal knowledge of Rust)
- Port programs to Redox

If you know how to code in Rust, but don't know operating system development:

- Improve the [Ion](https://gitlab.redox-os.org/redox-os/ion) shell
- Improve the Orbital display server and window manager.
- Port Rust programs to Redox (in most cases you need to port crates, be aware of missing functions on relibc, porting without these functions will make patches dirty)
- Improve the package manager
- Improve the program compatibility in relibc

If you know how to code in Rust, and have experience with operating system development:

- Familiarize yourself with the repository layout and code
- Search for `TODO`, `FIXME`, `BUG`, `UNOPTIMIZED`, `REWRITEME`, `DOCME`, and `PRETTYFYME` and fix the code you find
- Update old code to remove warnings
- Improve and optimize code, especially in the kernel
- Improve or write device drivers
- Improve Redox's automated testing suite and continuous integration testing processes

For those who want to contribute to the Redox GUI, our GUI strategy has recently changed.

- We are improving the [Orbital](https://gitlab.redox-os.org/redox-os/orbital) display server and window manager, you can read more about it on [this](https://gitlab.redox-os.org/redox-os/redox/-/issues/1430) tracking issue.
- Redox is in the process of adopting other Rust-written GUI toolkits, such as [Iced](https://iced.rs) and [Slint](https://slint-ui.com/). Please check out those projects if this is your area of interest.
- OrbTk is in maintenance mode, and its developers have moved to other projects such as the ones below. There is currently no Redox-specific GUI development underway.

## Tracking Issues Index

We use an index to track the development priorities, you can find them on [this](https://gitlab.redox-os.org/redox-os/redox/-/issues/1384) page.

## Build System

To download the build system use the following commands:

(You need to have [curl](https://curl.se/) installed on your system)

```sh
curl -sf https://gitlab.redox-os.org/redox-os/redox/raw/master/bootstrap.sh -o bootstrap.sh
```

```sh
time bash -e bootstrap.sh
```

To start the compilation of the default recipes run the command below:

```sh
make all
```

You can find the build system organization and commands on [this](https://doc.redox-os.org/book/ch08-06-build-system-reference.html) page.

## Developer FAQ

You can see the most common questions and problems on [this](https://doc.redox-os.org/book/ch09-07-developer-faq.html) page.

## Porting Software

You can read how to use the Cookbook recipe system to port applications on [this](https://doc.redox-os.org/book/ch09-03-porting-applications.html) page.

## Libraries and APIs

You can read [this](https://doc.redox-os.org/book/ch09-06-libraries-apis.html) page to learn about the libraries and APIs used in Redox.

## Development Tips

You can find important tips on [this](https://doc.redox-os.org/book/ch09-02-coding-and-building.html#development-tips) section.

## References

We maintain a list of wikis, articles and videos to learn Rust, OS development and computer science on [this](https://doc.redox-os.org/book/ch09-08-references.html) page.

If you are skilled there's a possibility that they could improve your knowledge in some way.

## Best Practices and Guidelines

You can read the best practices and guidelines on [this](https://doc.redox-os.org/book/ch11-00-best-practices.html) chapter.

## Style Guidelines

### Rust

Since **Rust** is a relatively small and new language compared to others like C and C++, there's really only one standard. Just follow the official Rust standards for formatting, and maybe run `rustfmt` on your changes, until we setup the CI system to do it automatically.

### Git

Please follow our [Git style](https://doc.redox-os.org/book/ch12-04-creating-proper-pull-requests.html) for pull requests.

## GitLab

### Identity

Once your GitLab account is created, you should add your Matrix or Discord username (the name after the `@` symbol) on the "About" section of your profile, that way we recognize you properly.

### Issues

To know how to create issues on the Redox GitLab, read [this](https://doc.redox-os.org/book/ch12-05-filing-issues.html) page.

Once you create an issue don't forget to post the link on the Dev or Support rooms of the chat, because the GitLab email notifications have distractions (service messages or spam) and most developers don't left their GitLab pages open to receive desktop notifications from the web browser (which require a custom setting to receive issue notifications).

By doing this you help us to pay attention to your issues and avoid them to be accidentally forgotten.

### Pull Requests

Please follow [our process](https://doc.redox-os.org/book/ch12-04-creating-proper-pull-requests.html) for creating proper pull requests.

## Other Ways to Contribute

If you aren't good on coding, but you still want to help keep the project going, you can contribute and support in a variety of ways! We'll try to find a way to use anything you have to offer. 

### Design

If you're a good designer, whether it's 2D graphics, 3D graphics, interfaces, web design, you can help. We need logos, UI design, UI skins, app icons, desktop backgrounds, etc.

- [Redox backgrounds](https://gitlab.redox-os.org/redox-os/backgrounds) - You can send your wallpapers on this repository.
- [Redox assets](https://gitlab.redox-os.org/redox-os/assets) - You can send your logos, icons and themes on this repository.

If you have questions about the graphic design, ask us on the [Chat](https://doc.redox-os.org/book/ch13-01-chat.html).

### Donate to Redox

If you are interested in donating to the Redox OS Nonprofit, you can find instructions [here](https://www.redox-os.org/donate/).
