This package Build-Depends on dbus-x11, but the usual reason to want
that package is to run build-time tests, and the build-time tests in
this particular package are disabled (commented out).
Please check whether the dbus-x11 B-D can be removed. It is probably a
good idea to replace the commented-out test suite invocation with
something more like the one used in other KDE packages, e.g.
plasma-thunderbolt, which does this:
xvfb-run -a dbus-run-session dh_auto_test --no-parallel
dbus-run-session requires a Build-Depends on dbus-daemon <!nocheck>. If
you want to leave that B-D in place in the hope that the test suite can
be re-enabled at some point, that would be fine: the dbus-daemon package
is not deprecated.
(This is part of a mass bug filing that I started about 10 years ago,
<https://udd.debian.org/cgi-bin/bts-usertags.cgi?user=dbus@packages.debian.org&tag=dbus-launch>.)
Thanks,
smcv