Install libghc-ifelse-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-ifelse-doc
Description:
anaphoric and miscellaneous useful control-flow; documentation
Library for control flow inside of monads with anaphoric variants on if and when and a C-like "switch" function. . 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/IfElse
Version: 0.85-13build1
Section: universe/doc