Install libghc-failure-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-failure-doc
Description:
simple type class for success/failure; documentation
This is a simple type class for success/failure computations. . 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.haskell.org/haskellwiki/Failure
Version: 0.2.0.3-7build1
Section: universe/doc