Load slime quicklisp integration when it is available on the system

dotfiles/emacs.d/init.el

@@ -237,3 +237,11 @@ There are two things you can do about this warning:
 ;;--------------------------------------------------------------------------------------
 
 (load-theme 'material t)
+
+;;--------------------------------------------------------------------------------------
+;; SLIME Quicklisp Integration
+;;--------------------------------------------------------------------------------------
+
+(when (file-exists-p "~/quicklisp/slime-helper.el")
+  (load (expand-file-name "~/quicklisp/slime-helper.el"))
+  (setq inferior-lisp-program "sbcl"))