libghc-unliftio-core-dev - 0.2.1.0-2 main

Provides the core MonadUnliftIO typeclass, instances for base and
transformers, and basic utility functions. Typically, you'll want
to use the unliftio library, which provides more functionality (and
a much better description).
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This package provides a library for the Haskell programming language.
See http://www.haskell.org/ for more information on Haskell.