[Misc] Change the way to load ‘tex-mode’

init.el

@@ -1232,8 +1232,9 @@ are assumed to be of the form *.crt."
                            '(reftex-citation . nil)))
             (setq reftex-plug-into-AUCTeX t)))
 
-(with-eval-after-load 'tex-mode
-  (use-package db-latex))
+(use-package tex
+  :defer t
+  :config (require 'db-latex))
 
 (use-package ebib
   :commands (ebib))

site-lisp/db-latex.el

@@ -7,9 +7,6 @@
 
 ;; Setup
 
-(use-package tex
-  :ensure auctex)
-
 (require 'latex)
 (require 'tex-buf)
 (require 'reftex)