For the record: dbus-broker has full SELinux support.
Well, I don't mind either way. https://github.com/bus1/dbus-broker/wiki#using-dbus-broker says it has to be disabled.
Indeed, thanks for the pointer! Removed that now (it was left-over from before we got SELinux support).
Re:Rethinking the D-Bus Message Bus
by pinpeliponni on Wednesday August 23, 2017 @11:01AM
(#15082002)
Hmm. If it doesn't have SELinux policy that actually does something, it probably shouldn't run as a daemon. Let's see how I can remove it... :(
DBus is the one part of the modern linux desktop I would like to/have to install to get the applications I want running, even though I dislike it a lot (pulseaudio and systemd one can just not install). One example is the password remember function of steam. Having a more reasonable implementation could help with this a lot.