Created attachment 331616 [details]
This is a dependency for dev-python/python-sipsimple (bug 446024).
Perhaps you should make do with an overlay for now, I'm not sure we should take your list of 7 relatively obscure (as far as I can tell) packages and expend a lot of effort on them.
Also, I really hate the python-prefix on all these. I guess it might make sense if upstream also has that and I'm sure all the Debian guys love it, but we already have the dev-python prefix.
"4-python" EAPI is not defined by PMS and not allowed in the tree, see https://dev.gentoo.org/~ulm/pms/head/pms.html#x1-140002.2
Renaming the ebuilds and rewriting them to accommodate the name change is simple enough (the programs each seem to install in the python site-packages directory without any "python-" prefix), and I could rewrite them to use an acceptable EAPI. In any case, I'd be happy to host them on my overlay if they're still unsuitable for Portage.
That would probably be a good first step. After you've debugged the overlay a little bit, we should see how much interest there is in this net-voip/blink thing.