Mark package as installed when use git

[Martin]

Hi there,

I use org-mode from github with in my init.el:

(add-to-list 'load-path (concat my-user-emacs-directory 
"contrib/org-mode/lisp"))
(add-to-list 'load-path (concat my-user-emacs-directory 
"contrib/org-mode/contrib/lisp"))
(require 'org)

And later I like to use pandoc for export:

(use-package orgbox :ensure t)

So now this use-package will install org also from melpa.  Is there a
way to avoid that?  So like tell package.el that org is allready
installed, don't check that dependency?

Thanks,
Martin

-- 
Thanks for your help!