Install libexene-smlnj by entering the following commands in the terminal:
sudo apt update sudo apt install libexene-smlnj
Description:
Concurrent ML library for the X Window System
A multi-threaded X Window System toolkit written in Concurrent ML. Many other windowing toolkits, such as Xlib, register separate functions that are called by a centralized event processing loop. In contrast, eXene maintains each window and graphical object in a separate thread that has the ability to update itself.
Homepage: http://www.smlnj.org/
Version: 110.79-4
Section: universe/devel