Tanzanite is an interface for RubyGems and DebPack. It makes it extremely easy to maintain multiple versions of a program, and most importantly, have a RubyGem use a Debian package as a dependancy. This way a gem and a Debian package can both require the Ruby-GTK bindings, and the user only has to have one installation of these bindings. DebPack does the grunt work, Tanzanite makes it easy.