Repa provides high performance, regular, multi-dimensional, shape polymorphic
 parallel arrays. All numeric data is stored unboxed. Functions written with
 the Repa combinators are automatically parallel provided you supply +RTS -Nn
 on the command line when running the program.
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 This package provides a library for the Haskell programming language, compiled
 for profiling. See http://www.haskell.org/ for more information on Haskell.