libghc-profunctors-prof 5.5.2-1build1 (armhf binary) in ubuntu groovy

 Profunctors are a generalization of relations and also of bimodules.
 They are related to the notion of correspondences.
 .
 This package provides a library for the Haskell programming language, compiled
 for profiling. See http://www.haskell.org/ for more information on Haskell.