libghc-contravariant-dev - 1.5.5-2+b1 main

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 a library for the Haskell programming language.
See http://www.haskell.org/ for more information on Haskell.