blueman-applet, which is part of net-wireless/blueman package requires x11-libs/libnotify[introspection] library to run. When libnotify is installed w/o introspection, following error occurs:
ERROR:root:Could not find any typelib for Notify
Traceback (most recent call last):
File "/usr/bin/blueman-applet", line 15, in <module>
from gi.repository import Notify
ImportError: cannot import name Notify
Also the dependency on x11-libs/gtk+:3=[introspection] have to be added. Without gtk+[introspection] similar ImportError appears.
Created attachment 395526 [details, diff]
Proposed patch to add missing dependencies
Fixed that one today.