libXft-2.1.11 have broken export of symbol XftNameUnparse, thus some dependencies are broken too (at least drscheme-360-r1). They have a bug about this: https://bugs.freedesktop.org/show_bug.cgi?id=8900 I think they'll fix it in next versions, but now it will be good to use that patch in gentoo's ebuild.
*** This bug has been marked as a duplicate of 152564 ***