libghc-cassava-megaparsec-dev - 2.0.1-1+b1 main

This package provides alternative parser for the Cassava package
written with Megaparsec so you can get better error messages at
expense of some speed.
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The package works seamlessly with Cassava by replacing the following
functions: decode, decodeWith, decodeByName, decodeByNameWith.
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The functions work just the same as Cassava's equivalents, but also
take name of file they parse (to include into error messages) and
return typed high-quality error messages produced by Megaparsec.
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This package provides a library for the Haskell programming language.
See http://www.haskell.org/ for more information on Haskell.