New issue by flexibeast on void-packages repository

https://github.com/void-linux/void-packages/issues/20744

Description:
Installing and running `cmus` from the console results in an error message: "an error occured while initializing MPRIS". [This line of the cmus source](https://github.com/cmus/cmus/blob/d1290d50f9f7585c43b9e1326c0d6d1e0b4583f6/mpris.c#L491) suggests that `cmus` requires the presence of a session bus (cf. [the documentation for `sd_bus_default_user`](https://www.freedesktop.org/software/systemd/man/sd_bus_open.html)), and indeed, running `dbus-launch /bin/cmus` results in no error being reported on startup.

How should this be addressed? Should the `cmus` package be modified, or should upstream not be assuming the presence of a session bus?