libghc-numbers-dev 2009.8.9-1 (amd64 binary) in ubuntu oneiric

 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.
 .
 It contains instances of the numerical classes for a variety of
 different numbers: (computable) real numbers, arbitrary precision fixed
 numbers, arbitrary precision floating point numbers, differentiable
 numbers, symbolic numbers, natural numbers, interval arithmetic.