In a Nutshell
LambdaCube 3D is a domain specific language and library that makes it possible to program GPUs in a purely functional style.
Purely Functional Rendering Engine
LambdaCube is in its infancy, so there will be no streamlined installation process for the time being, as many things are subject to change. The LambdaCube GitHub repository contains a short list of instructions if you want to get it running on your box. Additional materials: