Install libghc-groups-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-groups-doc
Description:
Haskell 98 groups; documentation
A group is a monoid with invertibility. . 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://hackage.haskell.org/package/groups
Version: 0.4.1.0-1
Section: universe/doc