haxe-bin : An open source toolkit based on a modern, strictly typed programming language ( https://haxe.org/ )
hy : A LISP dialect running in python ( http://hylang.org/ )
ocaml : Type-inferring functional programming language descended from the ML family ( http://www.ocaml.org/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a riru
For Paludis use this rsync : rsync://gentoo.zugaina.org/riru-portage
If you have a problem : ycarus(-at-)zugaina.org