please see attached patch so that kde and gnome support is now optional. kde support was not getting built in with the earlier ebuilds (it's disabled by default) -- and in contrast, gnome was enabled by default. this will fix that. (i think) :)
Created attachment 5873 [details, diff] patch for kde/gnome use flags
Fluxbox is build against the commonbox eclass which already checks for those USE vars. This already works properly.