Install libghc-strict-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-strict-doc
Description:
Strict variants of standard Haskell datatypes; documentation
This package provides strict versions of some standard Haskell data types (pairs, Maybe and Either). It also contains strict IO operations. . 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.cse.unsw.edu.au/~rl/code/strict.html
Version: 0.3.2-13build1
Section: universe/doc