microlens support for Reader/Writer/State from mtl; profiling libraries

 This package contains functions (like 'view' or '+=') which work on
 'MonadReader', 'MonadWriter', and 'MonadState' from the mtl package.
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 This package is a part of the microslens family.
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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.