We need better way to handle optional run time dependencies. My suggestion is here: http://archives.gentoo.org/gentoo-dev/msg_808590a7c34401a8761d793bbb68a280.xml This bug is to track/keep changes needed for this to happen.
*** Bug 548272 has been marked as a duplicate of this bug. ***
Created attachment 402458 [details] ebuild in html
https://bugs.gentoo.org/show_bug.cgi?id=548272 slight duplicate but yeah For qa and or adding to user choice or passing IREC="flag1 flag2 e-mssg="for Best Experience ${IREC} these are optimal USE Flags, but the power is Yours. anyhow their is an ebuild in html , anyhow was my **5 cents** on it as a would be proxy maintainer , on a few pkgs.
It seems that I've came up with the same idea in #424283. I'm going to mark duplicate the other way around since #424283 includes more data. *** This bug has been marked as a duplicate of bug 424283 ***