%python_enable_dependency_generator still does not allow automatic dependency discover, so I've decided to continue with manually specified dependencies for now, and experiment on another branch.

 49+Requires:       gtk3
 51+Requires:       python3-gobject

I doubt that the python code directly interacts with gtk3 - so that dep is not required here python-gobject should most likely be python-gobject-Gdk - as this is a GUI application, we need the inrospection support for graphical apps (this in turn also makes Gtk appear anyway)

The rest seems all right