I've been following this project for a long time and it's so exciting that it's finally been released! Anyone that likes Lisp and/or game development will find plenty of interesting things to study by looking through Shinmera's source code, videos, and articles. Here's a couple of papers that I like a lot:

Object Oriented Shader Composition Using CLOS https://raw.githubusercontent.com/Shinmera/talks/master/els2...

Shader Pipeline and Effect Encapsulation using CLOS https://raw.githubusercontent.com/Shinmera/talks/master/els2...