haskell@gentoo.org Gentoo Haskell Implementation of n-ary sums and n-ary products. The module "Data.SOP" is the main module of this library and contains more detailed documentation. The main use case of this package is to serve as the core of https://hackage.haskell.org/package/generics-sop generics-sop A detailed description of the ideas behind this library is provided by the paper: * Edsko de Vries and Andres Löh. http://www.andres-loeh.de/TrueSumsOfProducts True Sums of Products Workshop on Generic Programming (WGP) 2014.