Per conor mcbride, the newtype typeclass represents the packing and unpacking of a newtype, and allows you to operatate under that newtype with functions such as ala. generics support was added in version 0.4, making this package a full replacement for the original newtype package, and a better alternative to newtype-th.

this package provides a library for the haskell programming language. see http://www.haskell.org/ for more information on haskell.