kde-apps/akonadi-calendar kde-apps/kmailtransport They seemed to get pulled if I retried the emerge, so I guess they dep'd by kdepim itself rather than the runtime.
Thanks for reporting. This was caused by wrong variable names and is fixed in git now. Please sync. https://gitweb.gentoo.org/proj/kde.git/commit/?id=9827d8aab1822f5a226fb88451cc712b1fd8e3f6