Try to fix slime-capf

elisp/slime-capf.el

@@ -36,17 +36,6 @@
 (require 'thingatpt)
 (require 'cape)
 
-(define-slime-contrib slime-capf
-  "Interaction between slime and Emacs capfs."
-  (:license "GPL")
-  (:authors "Ole Arndt <anwyn@sugarshark.com>" "Alexander Rosenberg <zanderpkg@pm.me>")
-  (:swank-dependencies swank-arglists)
-  (:on-load
-   (advice-add 'slime--completion-at-point :override
-               'slime-capf-complete-at-point))
-  (:on-unload
-   (advice-remove 'slime--completion-at-point 'slime-capf-complete-at-point)))
-
 ;;; ----------------------------------------------------------------------------
 ;;; * Customization
 

init.el

@@ -903,17 +903,18 @@ COMMAND and COMINT are like `compile'."
 
 ;; slime
 (use-package slime
+  :defer nil
   :init
   (setq inferior-lisp-program "sbcl")
   :config
-  (slime-setup '(slime-fancy-inspector inferior-slime
+  (slime-setup '(slime-fancy-inspector inferior-slime slime-references
-                 slime-references slime-xref-browser
+                 slime-xref-browser slime-mdot-fu slime-sprof slime-fancy)))
-                 slime-mdot-fu slime-sprof slime-fancy)))
 (use-package slime-capf
   :ensure nil
   :after slime
   :config
-  (add-to-list 'slime-contribs 'slime-capf))
+  (advice-add 'slime--completion-at-point :override
+              'slime-capf-complete-at-point))
 
 ;; pdf-tools
 (use-package pdf-tools