This package contains the generics system described in the Scrap Your
Boilerplate papers (see
http://www.cs.uu.nl/wiki/GenericProgramming/SYB). It defines the Data
class of types permitting folding and unfolding of constructor
applications, instances of this class for primitive types, and a
variety of traversals.

Homepage:
http://hackage.haskell.org/package/syb
