Install libghc-adjunctions-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-adjunctions-doc
Description:
adjunctions and representable functors for Haskell; documentation
In mathematics, adjoint functors are pairs of functors which stand in a particular relationship with one another, called an adjunction. This package provides adjunctions for Haskell. . 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://github.com/ekmett/adjunctions/
Version: 4.3-4build4
Section: universe/doc