Install libghc-hscolour-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-hscolour-doc
Description:
Documentation for libghc-hscolour-dev; documentation
HsColour currently has five output formats: ANSI terminal codes, HTML 3.2 with tags, HTML 4.01 with CSS, LaTeX, and mIRC chat client codes. . 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://code.haskell.org/~malcolm/hscolour/
Version: 1.24.2-1
Section: universe/doc