# Contributing to Yosys

Thanks for considering helping out. If this is your
first time contributing to an open source project, please take a look at the
following guide about the basics:
https://opensource.guide/how-to-contribute/#orienting-yourself-to-a-new-project.

## Asking questions

If you have a question about how to use Yosys, please ask on our [Discourse forum](https://yosyshq.discourse.group/).
The Discourse is also a great place to ask questions about developing or
contributing to Yosys.

We have open [dev 'jour fixe' (JF) meetings](https://docs.google.com/document/d/1SapA6QAsJcsgwsdKJDgnGR2mr97pJjV4eeXg_TVJhRU/edit?usp=sharing) where developers from YosysHQ and the
community come together to discuss open issues and PRs.  This is also a good
place to talk to us about how to implement larger PRs.

## Using the issue tracker

The [issue tracker](https://github.com/YosysHQ/yosys/issues) is used for
tracking bugs or other problems with Yosys or its documentation.  It is also the
place to go for requesting new features.

### Bug reports

Learn more [here](https://yosyshq.readthedocs.io/projects/yosys/en/latest/yosys_internals/extending_yosys/contributing.html#reporting-bugs) about how to report bugs. We fix well-reported bugs the fastest.

## Contributing code

If you're adding complex functionality, or modifying core parts of Yosys,
we highly recommend discussing your motivation and approach
ahead of time on the [Discourse forum](https://yosyshq.discourse.group/).

### Using pull requests

If you are working on something to add to Yosys, or fix something that isn't
working quite right,
make a [pull request (PR)](https://github.com/YosysHQ/yosys/pulls).

An open PR, even as a draft, tells everyone that you're working on it and they
don't have to. It can also be a useful way to solicit feedback on in-progress
changes. See above to find the best way to [ask us questions](#asking-questions).

### Continuous integration

[Continuous Integration (CI)](https://github.com/YosysHQ/yosys/actions) tools
automatically compile Yosys and run it with the full suite of tests.
If you're a first time contributor, a maintainer has to trigger a run for you.
We test on various platforms, compilers. Sanitizer builds are only tested
on the main branch.

### Labels

We use [labels](https://github.com/YosysHQ/yosys/labels) to help categorise
issues and PRs.  If a label seems relevant to your work, please do add it; this
also includes the labels beginning with 'status-'.  The 'merge-' labels are used
by maintainers for tracking and communicating which PRs are ready and pending
merge; please do not use these labels if you are not a maintainer.


### Coding style

Learn more [here](https://yosys.readthedocs.io/en/latest/yosys_internals/extending_yosys/contributing.html).