Install libghc-url-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-url-doc
Description:
Haskell library for working with URLs; documentation
This library provides simple tools to parse and build URL strings. . 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://www.haskell.org/haskellwiki/Url
Version: 2.1.3-6build1
Section: universe/doc