Install libghc-prim-uniq-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-prim-uniq-doc
Description:
opaque unique identifiers in primitive state monads; documentation
Opaque unique identifiers in primitive state monads and a GADT-like type using them as witnesses of type equality. . 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/mokus0/prim-uniq
Version: 0.1.0.1-3build3
Section: universe/doc