[slime-devel] Implementation Specific Configuration

Hi,

How can set local environment variables in slime-mode specific to each lisp implementation?

I tried to use something similar to below code snippet.

(defun custom-slime-mode () (interactive) ... ;; Implementation specific symbol completion. (setq slime-complete-symbol-function (case slime-lisp-implementation-name ((x y z) 'slime-simple-complete-symbol) (t 'slime-fuzzy-complete-symbol))))

(add-to-list 'slime-mode-hook 'custom-slime-mode)

But emacs complains that

(void-variable slime-lisp-implementation-name)

How do you define implementation specific local environment variables?

Regards.