Add use-package

init.el

 (require 'init-site-lisp) ;; Must come before elpa, as it may provide package.el
 (require 'init-elpa)      ;; Machinery for installing required packages
 ;;(require 'init-exec-path) ;; Set up $PATH
+(require 'init-use-package) ;; Machinery for installing required packages
 
 ;;----------------------------------------------------------------------------
 ;; Allow users to provide an optional "init-preload-local.el"

lisp/init-use-package.el

+;;; package --- use-package macro
+;;; Commentary:
+;;; Code:
+;;; https://github.com/jwiegley/use-package
+
+(require-package 'use-package)
+
+(provide 'init-use-package)
+
+;;; init-use-package.el ends here