I'm trying to uninstall Kwrite, because I prefer Kate as a text editor.

Anyway, it has some dependencies that the package manager also want to uninstall, namely "patterns-openSUSE-kde4" "patterns-openSUSE-kde4_basis" "patterns-openSUSE-kde4_imaging"; as far as I can tell, these are metapackages, so removing them won't cause any modification in my system, am I right?

I'm also interested to know if, when updating the system, these "pattern" packages are somewhat required or not. I'm coming from Kubuntu, where the metapackages were only used as an easy way to install multiple related packages, and could be removed afterwards; here on openSUSE do they have a similar functionality? Or are they required not just for installation but also for update?