Install libghc-x11-xft-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libghc-x11-xft-doc
Description:
Haskell Xft binding for GHC; documentation
This library is a binding to the Xft library. . Xft provides a client-side font API for X applications, making the FreeType font rasterizer available to X clients. Fontconfig is used for font specification resolution. Where available, the RENDER extension handles glyph drawing; otherwise, the core X protocol is used. . 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/X11-xft
Version: 0.3.1-11build4
Section: universe/doc