I expect this is just a silly mistake. http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/app-office/libreoffice-bin/libreoffice-bin-3.4.3.2-r1.ebuild?revision=1.1&view=markup RDEPEND="${COMMON_DEPEND} !app-office/libreoffice-bin <-- ummmm " But I'm imagining it was just a mindless replacement from what worked in the previous version RDEPEND="!app-office/libreoffice !app-office/openoffice !app-office/openoffice-bin <-- this makes sense here " And somebody looks to have just done s/openoffice/libreoffice/g =)
Fixed in main tree.