Install libghc-vty-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-vty-doc
Description:
Terminal interface library for ghc; documentation
Vty is a terminal interface/control library for Haskell. It has a very easy API. . 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/jtdaugherty/vty
Version: 5.16-1build1
Section: universe/doc