There is an updated pull request by tornaria against master on the void-packages repository

https://github.com/tornaria/void-packages cython3
https://github.com/void-linux/void-packages/pull/45161

Some cython updates on top of #45086
On top of https://github.com/void-linux/void-packages/pull/45086 here I fix
 - python3-cysignals
 - python3-cypari2
 - python3-fpylll
 - python3-pplpy
 - python3-lxml

The strategy is to be as minimal as possible, e.g. mostly use `legacy_implicit_noexcept=True` and other legacy options when needed, rather than patch.

I'm still working on sagemath, but this should cover all its deps.

@ahesford

A patch file from https://github.com/void-linux/void-packages/pull/45161.patch is attached