These ebuilds come from http://ohnopub.net/~ohnobinki/gentoo.
If you have some problems, go to the official site first.
calvin-simplex : Implementation of a virtual machine and assembler for Simplex, an oversimplified educational tool ( http://ohnopub.net/~ohnobinki/calvin-simplex.php )
ruby : An object-oriented scripting language ( http://www.ruby-lang.org/ )
spidermonkey : Stand-alone JavaScript C library ( http://www.mozilla.org/js/spidermonkey/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a ohnobinki
For Paludis use this rsync : rsync://gentoo.zugaina.org/ohnobinki-portage
If you have a problem : ycarus(-at-)zugaina.org