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

https://github.com/ndowens/void-packages neochat
https://github.com/void-linux/void-packages/pull/27385

New package: neochat-1.0
libQuotient was renamed from libqmatrixclient. The current version of Quaternion looks for libqmatrixclient. Once new version of Quaternion is released we can remove libqmatrixclient. So add conflict with libqmatrixclient until then

A patch file from https://github.com/void-linux/void-packages/pull/27385.patch is attached