ubuntu-tweak не запускается. пишет
ERROR:root:Could not find any typelib for Unique
ERROR:root:Could not find any typelib for Gdk
ERROR:root:Could not find any typelib for Gtk
Traceback (most recent call last):
File "/usr/bin/ubuntu-tweak", line 29, in <module>
from gi.repository import Unique, GObject, Gdk, Gtk
ImportError: cannot import name Unique