Binary package “libghc-unixutils-dev” in ubuntu bionic

interface between Haskell and Unix-like operating systems

 Unixutils is a collection of useful and mildly useful functions that
 you might expect to find in System.* with a heavy bias towards
 Unix-type operating systems.
 .
 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.