I&#x27;d love to see full sources and build system that allowed everyone to play with Frank. I was sure I&#x27;d made a comment to that effect somewhere, but I can&#x27;t find it now, perhaps it was eaten by my outdated smart phone.<p>On the other hand, I believe the paper(s) might very well be more important: exploring the ideas. I think it&#x27;s a difference between a research project in computer science, and an engineering project. The first lambda calculus was just a project - they thought they&#x27;d need years to get the thing running. And then someone just coded up eval() in machine-code and they were bootstrapped.<p>I to want the implementation of eval(), but I&#x27;m not unhappy that they&#x27;ve shared their ideas.