> We're thinking of releasing Carbide as open source in the coming weeks if there's a community interested in building stuff on top of it.

I'm really interested in things like Carbide, and I'm finding it inspirational as a user interface experiment. But I'll be sticking with Jupyter for the time being on my current project — I think we would be kind of dumb to build stuff we cared about on top of it if it's not open source; without open source, you don't have a community, you just have consumers.

FWIW the jet-engine mode is still active on my laptop now.