Install gauche-gtk by entering the following commands in the terminal:
sudo apt update sudo apt install gauche-gtk
Description:
Gauche bindings for GTK+ GUI Toolkit
Gauche-gtk is an extension module of Gauche Scheme implementation. It provides gtk, gtk.gl, and gtk.glgd modules.
Homepage: http://practical-scheme.net/gauche/
Version: 0.6+git20160927-1
Section: universe/lisp