Hi there, kde-base/dolphin-plugins can provide git, bazaar and mercual integration in dolphin as of 4.12.4, and also dropbox in 4.13, but needs the corresponding USE flags enabled (which now are all disabled).
I don't know if you intentionally packaged it that way for some reason, but if that's the case wouldn'it be better to not package it at all and let users just use the portage version?