SuperKaramba with Ruby
Just some minutes ago the next generation of SuperKaramba got Ruby support. That means, you are able to use Python and Ruby to write your karamba's now.
To try it out, fetch+install latest kdelibs, kdebindings/ruby/krossruby, kdeutils/superkaramba and run the Ruby clock sample with superkaramba --usekross clock.theme
The Scripting API-Reference of SuperKaramba can be used for both backends.