Allow built-in packages to be upgraded

Author: purcell

lisp/init-elpa.el

@@ -20,6 +20,8 @@
 ;; Official MELPA Mirror, in case necessary.
 ;;(add-to-list 'package-archives (cons "melpa-mirror" (concat proto "://www.mirrorservice.org/sites/melpa.org/packages/")) t)
 
+;; Allow built-in packages to be upgraded
+(setq package-install-upgrade-built-in t)
 
 
 ;; Work-around for https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34341