The blueglass-xcursors golden-xcursors silver-xcursors X cursor themes assume that the installed X server is XFree86; they install in the according location and use appropriate dependencies. However, the X.org X server is also compatible with the cursor themes. The RDEPEND needs to be changed to || ( >=x11-base/xfree-4.3.0-r2 x11-base/xorg-x11 ) and the install location to select between /usr/share/cursors/xfree and /usr/share/cursors/xorg-x11 depending on which X server is installed. It is (I believe) allowable to assume that only one of the two X servers is installed, as there is some overlap between installed files. To simplify things, I suggest using an eclass to eliminate the common code between the three packages and allow for new kdelook X cursor themes.
Created attachment 29221 [details] Suggested xcursors-kdelook.eclass
Created attachment 29222 [details] Suggested silver-xcursors-0.4.ebuild
*** This bug has been marked as a duplicate of 47632 ***