They only thing it took was convincing hwoarang how much they were needed since ivman is pretty much borked. At first I asked him to add them to sunrise overlay but he insisted they go straight to portage.
The original ebuilds were taken from Gentoo bugzilla: new ebuilds for halevt and boolstuff -> supersedes ivman, they were refined a bit and then added to Portage. Thanks to Mike Gualtieri for the original ebuilds.
Hwoarang has added me as the proxy maintainer of these two packages. I hope that when updates go out, I’ll test them as soon as possible and then create new ebuilds for them.
The packages are currently only in ~x86 and ~amd64 (testing) branches. If you test the packages and think that they are stable enough please let me know and I’ll try to convince hwoarang to put them to x86 and amd64 (stable) branches.
Thanks again to hwoarang! Cheers!