[Ambrevar]

Agreed, I think Jupyter got many things right, in particular when it comes to prompt handler and data visualization.

What I find limiting for now is interactions with the shell process, in my case the Common Lisp compiler: no interactive stacktrace, no debugger, etc. This is very limiting. I don't know if there is a way around it, as this could be a limitation of the Jupyter design with its kernels. Please let me know if there is a way out! :)