Current libkface contains a small but severe bug that has, at least speaking of the new face recognition functionality of KPhotoAlbum, a massive performance impact in some situations (it makes it almost unusable). Commit 916b00a of the libkface git repository fixes this issue (cf. http://quickgit.kde.org/?p=libkface.git&a=commit&h=916b00af31981a0729e05a92ae212f05279e730f). It would be very nice to have a patched ebuild for 4.7.0, on which KPA depends. Alas, neither the KDE apllications release of libkface 15.03.80, nor 15.03.90 nor 15.03.95 already contain the patch. So it would be the best if the 4.7.0 ebuild was removed in favor of a 4.7.0-r1 ebuild applying the above patch. Thanks in advance for all actions taken!
Thanks, fixed in CVS. + 11 May 2015; Michael Palimaka <kensington@gentoo.org> + +files/libkface-4.7.0-histogram.patch, +libkface-4.7.0-r1.ebuild, + -libkface-4.7.0.ebuild: + Backport patch from upstream to solve performance issue wrt bug #549146.