There is a new pull request by ahesford against master on the void-packages repository

https://github.com/ahesford/void-packages python3-Cython-3.0.0
https://github.com/void-linux/void-packages/pull/45086

python3-Cython: update to 3.0.0.
This is a big update that reflects several years of extensive work, and needs some testing to be sure it doesn't break any Void packages.

#### Testing the changes
- I tested the changes in this PR: **in progress**

A patch file from https://github.com/void-linux/void-packages/pull/45086.patch is attached