Install libghc-dns-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-dns-doc
Description:
pure Haskell DNS library; documentation
A thread-safe DNS library for both clients and servers written in pure 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://hackage.haskell.org/package/dns
Version: 2.0.13-1build1
Section: universe/doc