cmake : Cross platform Make ( http://www.cmake.org/ )
ftjam : Jam is a powerful alternative to make. FTJam is a 100% compatible enhanced Jam implementation ( http://freetype.sourceforge.net/jam/index.html )
ragel : Compiles finite state machines from regular languages into executable code ( https://www.colm.net/open-source/ragel/ )
source-highlight : Generate highlighted source code as an (x)html document ( https://www.gnu.org/software/src-highlite/source-highlight.html )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a gentoo-playground
For Paludis use this rsync : rsync://gentoo.zugaina.org/gentoo-playground-portage
If you have a problem : ycarus(-at-)zugaina.org