As the linked doc says, geiser draws inspiration from Slime, but of course it's for Scheme rather than Lisp (or Common Lisp.) From what I've read in the past I

As the linked doc says, geiser draws inspiration from Slime, but of course it's for Scheme rather than Lisp (or Common Lisp.) From what I've read in the past I think most attempts to use Slime with Scheme haven't been wholly successful, hence geiser.