libghc-maybet-dev binary package in Ubuntu Trusty arm64

 MaybeT is a Haskell monad transformer that adds Maybe semantics to an
 existing monad, making it able to fail (i.e. return Nothing) or be
 successful (return the result wrapped in a Just).
 .
 If you don't know what a Haskell monad is, you can just ignore this package.
 .
 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.

Source package