The package included outdated intltool makefiles, resulting in installation of
local files to `$out/'@DATADIRNAME'`. Running `intltoolize -f` forces
regeneration of the Makefile and fixes the issue.
See #11567.
Furthermore, it renames pythonPackages.dbus to pythonPackages.dbus-
python as that's the name upstream uses.
There is a small rebuild but I couldn't figure out the actual cause.