Install libghc-hlint-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-hlint-doc
Description:
Haskell source code suggestions; documentation
HLint gives suggestions on how to improve your source code. It can either print them directly, or generate a colored HTML output. . This is the HLint library, used by programs that want to incorporate HLint's functionality. . This package provides the documentation for a library for the Haskell programming language. See http://www.haskell.org/ for more information on Haskell.
Homepage: http://community.haskell.org/~ndm/hlint/
Version: 2.0.11-1build1
Section: universe/doc