Install libghc-pqueue-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-pqueue-doc
Description:
reliable, persistent, fast priority queues.; documentation
A fast, reliable priority queue implementation based on a binomial heap. . 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/pqueue
Version: 1.3.2.3-1
Section: universe/doc