The gnome2 eclass is no longer inherited in the compiz-0.5.0 ebuild. Also, the gnome2_src_install was removed. Is there any good reason for this? For now, compiz gconf schemas are no longer installed properly, which may cause several bugs and other general strangenesses.
fixed
No, it's not. You still need to add the gnome2_src_install back in: since you are overriding src_install(), just inheriting the eclass does nothing. This was what the previous compiz ebuild was doing as well. Remove "emake DESTDIR="${D}" install || die" and substitute it with "gnome2_src_install".
Ignore my previous comment, I am wrong. Teaches me to not post to bugzilla when I've been awake for only five minutes. Sorry for the spam.