libextlib-ruby 0.9.13-2 (i386 binary) in ubuntu quantal

 This library provides a number of lightweight Ruby class extensions
 extracted from DataMapper. Examples include a Mash class, which is a
 Hash with indifferent access and an added blank? method to most
 standard variable classes.
 .
 This package is a dependency package, which depends on the package
 containing actual Ruby extlib libraries for the default Ruby version
 (currently 1.8).