This bug tracks the implementation of the EAPI 3 feature mentioned in the summary.
This is in svn r13800, patch by Markus Meier <maekke@gentoo.org>.
(In reply to comment #1) > This is in svn r13800, patch by Markus Meier <maekke@gentoo.org>. Via gitweb: http://git.overlays.gentoo.org/gitweb/?p=proj/portage.git;a=commit;h=1d13ae1ea7d44d6ecfdd401be4c4d867b61ff632