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

https://github.com/leahneukirchen/void-packages cxxabi8
https://github.com/void-linux/void-packages/pull/14546

libcxx bump
Fixes #14512.

A patch file from https://github.com/void-linux/void-packages/pull/14546.patch is attached