see the link Reproducible: Always Can maintainer add /etc/X11/xinit/xinitrc.d/70-seahorse-agent with "magic" code into ebuild :) ?
meh, I thought compnerd already did it. Also please note that there is nothing magic and that we have to consider if it works well in non-gnome setups as well (I actually couldn't test that when I wrote the instructions). Anyway, it requires further integration to be even better with ssh key loading and this part was rewritten in trunk of seahorse/gnome-keyring so it'll probably change in next gnome version.
talked with compnerd, I think it's a bit late to put this in tree with gnome-2.20 and it's already in the overlay so it will land with 2.22. Anyway, instructions are not that complicated to follow. Please remind us to write some documentation for it for when gnome-2.22 lands in portage.
I was going to report this issue as a bug: make[1]: Leaving directory `/var/tmp/portage/app-crypt/seahorse-2.22.0/work/seahorse-2.22.0' install: cannot stat `/noraid/portage/app-crypt/seahorse/files/70-seahorse-agent': No such file or directory >>> Completed installing seahorse-2.22.0 into /var/tmp/portage/app-crypt/seahorse-2.22.0/image/ but I guess this is the right place. So consider this the reminder asked for in comment #2.
I failed at moving it. Thanks for the notice.