Install elpa-popup by entering the following commands in the terminal:
sudo apt update sudo apt install elpa-popup
Description:
visual popup user interface library for Emacs
popup.el is a visual popup user interface library for Emacs. It provides common UI widgets such as popup tooltips and popup menus.
Homepage: https://github.com/auto-complete/popup-el
Version: 0.5.3-1
Section: universe/lisp