libghc-mtl-prof 2.1.1-1build1 (amd64 binary) in ubuntu quantal

 This package provides a library for the Haskell programming language,
 compiled for profiling.
 See http://www.haskell.org/ for more information on Haskell.
 .
 MTL is a monad transformer library, inspired by the paper "Functional
 Programming with Overloading and Higher-Order Polymorphism",
 by Mark P Jones (<http://www.cse.ogi.edu/~mpj/>), Advanced School
 of Functional Programming, 1995.