# Getting Started Thank you for your interest in contributing to Rust! There are many ways to contribute, and we appreciate all of them. If this is your first time contributing, the [walkthrough] chapter can give you a good example of how a typical contribution would go. This documentation is _not_ intended to be comprehensive; it is meant to be a quick guide for the most useful things. For more information, [see this chapter on how to build and run the compiler](./building/how-to-build-and-run.md). [internals]: https://internals.rust-lang.org [rust-discord]: http://discord.gg/rust-lang [rust-zulip]: https://rust-lang.zulipchat.com [coc]: https://www.rust-lang.org/policies/code-of-conduct [walkthrough]: ./walkthrough.md [Getting Started]: ./getting-started.md ## Asking Questions If you have questions, please make a post on the [Rust Zulip server][rust-zulip] or [internals.rust-lang.org][internals]. If you are contributing to Rustup, be aware they are not on Zulip - you can ask questions in `#wg-rustup` [on Discord][rust-discord]. See the [list of teams and working groups][governance] and [the Community page][community] on the official website for more resources. [governance]: https://www.rust-lang.org/governance [community]: https://www.rust-lang.org/community As a reminder, all contributors are expected to follow our [Code of Conduct][coc]. The compiler team (or `t-compiler`) usually hangs out in Zulip [in this "stream"][z]; it will be easiest to get questions answered there. [z]: https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler **Please ask questions!** A lot of people report feeling that they are "wasting expert time", but nobody on `t-compiler` feels this way. Contributors are important to us. Also, if you feel comfortable, prefer public topics, as this means others can see the questions and answers, and perhaps even integrate them back into this guide :) ### Experts Not all `t-compiler` members are experts on all parts of `rustc`; it's a pretty large project. To find out who could have some expertise on different parts of the compiler, [consult triagebot assign groups][map]. The sections that start with `[assign*` in `triagebot.toml` file. But also, feel free to ask questions even if you can't figure out who to ping. Another way to find experts for a given part of the compiler is to see who has made recent commits. For example, to find people who have recently worked on name resolution since the 1.68.2 release, you could run `git shortlog -n 1.68.2.. compiler/rustc_resolve/`. Ignore any commits starting with "Rollup merge" or commits by `@bors` (see [CI contribution procedures](./contributing.md#ci) for more information about these commits). [map]: https://github.com/rust-lang/rust/blob/master/triagebot.toml ### Etiquette We do ask that you be mindful to include as much useful information as you can in your question, but we recognize this can be hard if you are unfamiliar with contributing to Rust. Just pinging someone without providing any context can be a bit annoying and just create noise, so we ask that you be mindful of the fact that the `t-compiler` folks get a lot of pings in a day. ## What should I work on? The Rust project is quite large and it can be difficult to know which parts of the project need help, or are a good starting place for beginners. Here are some suggested starting places. ### Easy or mentored issues If you're looking for somewhere to start, check out the following [issue search][help-wanted-search]. See the [Triage] for an explanation of these labels. You can also try filtering the search to areas you're interested in. For example: - `repo:rust-lang/rust-clippy` will only show clippy issues - `label:T-compiler` will only show issues related to the compiler - `label:A-diagnostics` will only show diagnostic issues Not all important or beginner work has issue labels. See below for how to find work that isn't labelled. [help-wanted-search]: https://github.com/issues?q=is%3Aopen+is%3Aissue+org%3Arust-lang+no%3Aassignee+label%3AE-easy%2C%22good+first+issue%22%2Cgood-first-issue%2CE-medium%2CEasy%2CE-help-wanted%2CE-mentor+-label%3AS-blocked+-linked%3Apr+ [Triage]: ./contributing.md#issue-triage ### Recurring work Some work is too large to be done by a single person. In this case, it's common to have "Tracking issues" to co-ordinate the work between contributors. Here are some example tracking issues where it's easy to pick up work without a large time commitment: - [Move UI tests to subdirectories](https://github.com/rust-lang/rust/issues/73494) If you find more recurring work, please feel free to add it here! ### Clippy issues The [Clippy] project has spent a long time making its contribution process as friendly to newcomers as possible. Consider working on it first to get familiar with the process and the compiler internals. See [the Clippy contribution guide][clippy-contributing] for instructions on getting started. [Clippy]: https://doc.rust-lang.org/clippy/ [clippy-contributing]: https://github.com/rust-lang/rust-clippy/blob/master/CONTRIBUTING.md ### Diagnostic issues Many diagnostic issues are self-contained and don't need detailed background knowledge of the compiler. You can see a list of diagnostic issues [here][diagnostic-issues]. [diagnostic-issues]: https://github.com/rust-lang/rust/issues?q=is%3Aissue+is%3Aopen+label%3AA-diagnostics+no%3Aassignee ### Picking up abandoned pull requests Sometimes, contributors send a pull request, but later find out that they don't have enough time to work on it, or they simply are not interested in it anymore. Such PRs are often eventually closed and they receive the `S-inactive` label. You could try to examine some of these PRs and pick up the work. You can find the list of such PRs [here][abandoned-prs]. If the PR has been implemented in some other way in the meantime, the `S-inactive` label should be removed from it. If not, and it seems that there is still interest in the change, you can try to rebase the pull request on top of the latest `master` branch and send a new pull request, continuing the work on the feature. [abandoned-prs]: https://github.com/rust-lang/rust/pulls?q=is%3Apr+label%3AS-inactive+is%3Aclosed ### Writing tests Issues that have been resolved but do not have a regression test are marked with the `E-needs-test` label. Writing unit tests is a low-risk, lower-priority task that offers new contributors a great opportunity to familiarize themselves with the testing infrastructure and contribution workflow. ### Contributing to std (standard library) See [std-dev-guide](https://std-dev-guide.rust-lang.org/). ### Contributing code to other Rust projects There are a bunch of other projects that you can contribute to outside of the `rust-lang/rust` repo, including `cargo`, `miri`, `rustup`, and many others. These repos might have their own contributing guidelines and procedures. Many of them are owned by working groups. For more info, see the documentation in those repos' READMEs. ### Other ways to contribute There are a bunch of other ways you can contribute, especially if you don't feel comfortable jumping straight into the large `rust-lang/rust` codebase. The following tasks are doable without much background knowledge but are incredibly helpful: - [Writing documentation][wd]: if you are feeling a bit more intrepid, you could try to read a part of the code and write doc comments for it. This will help you to learn some part of the compiler while also producing a useful artifact! - [Triaging issues][triage]: categorizing, replicating, and minimizing issues is very helpful to the Rust maintainers. - [Working groups][wg]: there are a bunch of working groups on a wide variety of rust-related things. - Answer questions in the _Get Help!_ channels on the [Rust Discord server][rust-discord], on [users.rust-lang.org][users], or on [StackOverflow][so]. - Participate in the [RFC process](https://github.com/rust-lang/rfcs). - Find a [requested community library][community-library], build it, and publish it to [Crates.io](http://crates.io). Easier said than done, but very, very valuable! [rust-discord]: https://discord.gg/rust-lang [users]: https://users.rust-lang.org/ [so]: http://stackoverflow.com/questions/tagged/rust [community-library]: https://github.com/rust-lang/rfcs/labels/A-community-library [wd]: ./contributing.md#writing-documentation [wg]: https://rust-lang.github.io/compiler-team/working-groups/ [triage]: ./contributing.md#issue-triage ## Cloning and Building See ["How to build and run the compiler"](./building/how-to-build-and-run.md). ## Contributor Procedures This section has moved to the ["Contribution Procedures"](./contributing.md) chapter. ## Other Resources This section has moved to the ["About this guide"][more-links] chapter. [more-links]: ./about-this-guide.md#other-places-to-find-information