Install libghc-unixutils-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-unixutils-doc
Description:
interface between Haskell and Unix-like operating systems; documentation
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 the documentation for a library for the Haskell programming language. See http://www.haskell.org/ for more information on Haskell.
Homepage: https://github.com/seereason/haskell-unixutils.git
Version: 1.54.1-4build4
Section: universe/doc