libghc-errors-doc 2.1.3-1build2 (amd64 binary) in ubuntu artful

 This library encourages an error-handling style that directly uses the
 type system, rather than out-of-band exceptions.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.