Not great examples. Hazy memories of readme files for projects that sound interesting but fizzle out, sometimes decades ago. Emacs is probably a success story

Not great examples. Hazy memories of readme files for projects that sound interesting but fizzle out, sometimes decades ago. Emacs is probably a success story in that genre. It's possible to use it as the first process booted iiuc. I certainly have days where it's the only process I run after gnome has booted. Guix has replaced a lot of Linux userspace infra with scheme. Successfully as far as I can tell. I think there are (non-emacs...) operating systems in various states of progress written in lisp. Sometimes one finds a compiler written in lisp which doesn't have a runtime in C. Jitawa, Maru are the only two I know of. All the others I've looked at seem to be built on top of C. I think they're both finished/abandoned. My rebuild everything project is still in the better compiler phase so I might be projecting. Hopefully I'll remember better anecdotes later.