Install libghc-diagrams-gtk-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-diagrams-gtk-doc
Description:
Backend for rendering diagrams directly to GTK windows; documentation
An optional add-on to the diagrams-cairo package which allows rendering diagrams directly to GTK windows. . 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://projects.haskell.org/diagrams/
Version: 1.4-1build6
Section: universe/doc