Guile can run elisp already, IIRC. There's no compatibility issue, it would just be a runtime change. And then you'd get Guile's VM, which is very nice and also polyglot(tic?). Guile is a language-agnostic VM, not a language itself, and a frontend already exists for elisp.
> It's not a 100% drop-in replacement, that's true…(eq foo t) should always work. (eq foo nil) will only work if that
`nil' came from Elisp code; if it's a Scheme #f or '() in disguise, then you need to make that (not foo) or (null foo) (both works in both cases); anything but (eq foo nil).
