Install libghc-base-orphans-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-base-orphans-doc
Description:
Backwards-compatible orphan instances for base; documentation
base-orphans defines orphan instances that mimic instances available in later versions of base to a wider (older) range of compilers. base-orphans does not export anything except the orphan instances themselves and complements the base-compat package. . 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/haskell-compat/base-orphans#readme
Version: 0.6-1
Section: universe/doc