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

https://github.com/akce/void-packages chez-9.5.4
https://github.com/void-linux/void-packages/pull/26857

chez-scheme: update to 9.5.4
With regards to testing, I've compiled and run some apps on x86_64.

I've cross compiled for targets i686, armv6l, armv7l and they worked too.

A patch file from https://github.com/void-linux/void-packages/pull/26857.patch is attached