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

https://github.com/zdtcd/void-packages cmus
https://github.com/void-linux/void-packages/pull/15509

cmus: add elogind option to interface with MPRIS
Fix: #15371 

A patch file from https://github.com/void-linux/void-packages/pull/15509.patch is attached