Squeak is a full-featured implementation of the Smalltalk 
programming language and environment based on the original 
Smalltalk-80 system.

Squeak has very powerful 2- and 3-D graphics, sound, video, MIDI, 
animation and other multimedia capabilities.

Optional dependency: speex

NOTE:
This script only build the VM.
You may need to download the images manually via download page:
http://squeakvm.org/unix/download.html