If you find a bug in Basix, please report it on the GitHub issue tracker.
If you want to suggest a new feature or an improvement of a current feature, you can submit this on the issue tracker.
If you want to directly submit code to Basix, you can do this by forking the repo, then submitting a pull request. If you want to contribute, but are unsure where to start, have a look at the issues labelled "good first issue".
On opening a pull request, unit tests will run on GitHub CI. You can click on these in the pull request to see where (if anywhere) the tests are failing.
We expect all our contributors to follow the code of conduct. Any unacceptable behaviour can be reported to the FEniCS steering council (fenics-steering-council@googlegroups.com).