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

https://github.com/RoundDuckKira/void-packages gllock
https://github.com/void-linux/void-packages/pull/25454

New package: gllock-09102019
This is a locking program based on slock that has opengl-based lock screens for flashiness. https://github.com/kuravih/gllock/

A patch file from https://github.com/void-linux/void-packages/pull/25454.patch is attached