Binary package “elpa-xelb” in ubuntu lunar

pure Elisp implementation of X11 protocol

 XELB (X protocol Emacs Lisp Binding) is a pure Elisp
 implementation of X11 protocol based on the XML description
 files from XCB project. It features an object-oriented API and
 permits a certain degree of concurrency. It should enable you to
 implement some low-level X11 applications. Please refer to
 xelb.el for more details.