   "Register a new Scheme implementation."
   (interactive)
   (let ((current geiser-impl-installed-implementations)
-        (impl (geiser-impl--read-impl "New implementation: " nil t)))
+        (impl (geiser-impl--read-impl "New Scheme implementation: " nil t)))
     (unless (geiser-impl--register impl)
       (error "geiser-%s.el not found in load-path" impl))
     (when (and (not (memq impl current))

      (customize-save-variable
       'geiser-impl-installed-implementations (cons impl current)))))


;;; Unload support

    (add-to-list 'geiser-impl--impls impl)))

(defun geiser-impl--unregister (impl)
  (setq geiser-impl--impls (remove impl geiser-impl--impls))
  (ignore-errors (unload-feature (geiser-impl--impl-feature impl))))

(defvar geiser-impl--default-implementation
  geiser-impl-default-implementation)
