libghc-exceptions-dev - 0.10.4-1+b1 main

This library supports monads that can throw extensible exceptions.
The exceptions are the very same from Control.Exception, and the
operations offered very similar, but here they are not limited to
IO.
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This code is in the style of both transformers and mtl, and is
compatible with them, though doesn't mimic the module structure or
offer the complete range of features in those packages.
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This is very similar to ErrorT and MonadError, but based on features
of Control.Exception. In particular, it handles the complex case of
asynchronous exceptions by including mask in the typeclass. Note that
the extensible extensions feature relies the RankNTypes language
extension.
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This package provides a library for the Haskell programming language.
See http://www.haskell.org/ for more information on Haskell.