Comment 13 for bug 1264887

Two things:

1. if both are required then that has been broken for a long time because there has not been a kubuntu-artwork package for at least 5 years
2. if PPAness does affect the calculation, then I guess that needs to change to some degree since we pretty much support our own PPAs :S

Assuming 1. doesn't apply, enhancing the keydeps with some actual kubuntu stuff would help sufficiently though:
kubuntu-settings-desktop, kubuntu-notification-helper, kubuntu-debug-installer, kubuntu-web-shortcuts

Those do not get updates via PPAs and at the end of the day I suppose those are the most reliable indicators of a kubuntu installation.