libghc-monad-unlift-dev 0.2.0-5build1 (arm64 binary) in ubuntu eoan

 This package provides typeclasses for providing for unlifting of monad
 transformers and stacks.
 .
 Note that concrete implementations of common transformers implementing these
 type classes are provided by the monad-unlift-ref package.
 .
 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.