libsdl-ruby 2.1.1.1-1 (amd64 binary) in ubuntu quantal

 Ruby/SDL is the ruby extension library to use SDL. SDL (Simple
 DirectMedia Layer) is a cross-platform multimedia library designed to
 provide fast access to the graphics framebuffer and audio device.
 .
 This is a dummy package to install the SDL library bindings for
 the default version of Ruby.