I finally implemented dataflow-based reactive views for my moldable inspector for Common Lisp. It's much shorter than the limited input handling I had before, and also more versatile. I am working on a demonstration/example, stay tuned... There seem to be two widely used dataflow implementations for Common Lisp, out of which I picked the simple one (https://github.com/kchanqvq/lwcells) over the complex one (https://github.com/kennytilton/cells). In the process, I ran into my first experience with ambiguities in the Common Lisp specification, with one of my new indirect dependencies.