libextlib-ruby1.9.1 0.9.13-2 (i386 binary) in ubuntu lucid

 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 contains extlib libraries for Ruby 1.9.1.