move loading of custom.el to the beginning

settings/org-settings.el

@@ -971,7 +971,6 @@ used as a communication channel."
 (use-package org-drill  ;; requires persist https://elpa.gnu.org/packages/persist.html
   :commands org-drill)
 
-;; define `org-brain-path' in custom.
 (use-package org-brain  ;; uses org-id If you find that org-brain is missing entries, or list entries which doesn’t exist, try using M-x org-brain-update-id-locations, which syncs the org-brain entries with the org-id caching system.
   :commands (org-brain-visualize)
   :init

settings/post-settings.el

@@ -3,11 +3,5 @@
 ;;; Code:
 (setq gc-cons-threshold (* 2 1000 1000))           ;; Make gc pauses faster by decreasing back the threshold.  See also above.
 
-(use-package cus-edit
-  :config
-  (setq custom-file (concat user-emacs-directory "custom.el"))
-  (setq custom-buffer-done-kill t)
-  (load custom-file t t))
-
 (provide 'post-settings)
 ;;; post-settings.el ends here

settings/pre-settings.el

@@ -51,5 +51,11 @@ Both Win32 and Cygwin count.")
        (if (require 'dbus) (dbus-ping :session "org.freedesktop.Notifications")))  ;; is not enough
   "Check if DBus is available.")
 
+(use-package cus-edit
+  :config
+  (setq custom-file (concat user-emacs-directory "custom.el"))
+  (setq custom-buffer-done-kill t)
+  (load custom-file t t))
+
 (provide 'pre-settings)
 ;;; pre-settings.el ends here