libghc-lens-dev - 4.18.1-1+b2 main

This package comes "Batteries Included" with many useful lenses for the types
commonly used from the Haskell Platform, and with tools for automatically
generating lenses and isomorphisms for user-supplied data types.
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The combinators in Control.Lens provide a highly generic toolbox for composing
families of getters, folds, isomorphisms, traversals, setters and lenses and
their indexed variants.
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More information on the care and feeding of lenses, including a tutorial and
motivation for their types can be found on the lens wiki
(https://github.com/ekmett/lens/wiki).
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This package contains the normal library files.