The attached patch removes the use of kde eclass, and dependency on kde, as nuvola is a fd.o compliant icon theme, which could be used by every wm which respects fd.o specs, and not only by kde. It shouldn't depend on anything, as it could also be used by software which doesn't use X at all (yes, I doubt they exists, but still X is not required to have an icon theme installed). HTH, Diego
Created attachment 51860 [details, diff] Patch over current ebuild.
Committed as nuvola-1.0-r1, thanks.