libghc-contravariant-doc 1.3.1.1-1 (amd64 binary) in ubuntu wily

 This packages provides a type class for contravariant functors, i.e. those with
 a method contramap :: (a -> b) -> f b -> f a.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.