* lisp/emacs-lisp/package.el (package--prepare-dependencies):

Accept requirements without explicit version.

Fixes: debbugs:14941

lisp/ChangeLog

+2014-03-13  Tom Willemse  <tom@ryuslash.org>  (tiny change)
+
+	* emacs-lisp/package.el (package--prepare-dependencies):
+	Accept requirements without explicit version (bug#14941).
+
 2014-03-12  Juanma Barranquero  <lekktu@gmail.com>
 	* register.el (register-separator, copy-to-register): Doc fixes.

lisp/emacs-lisp/package.el

@@ -1128,6 +1128,8 @@ is wrapped around any parts requiring it."
                  ((symbolp dep) `(,dep "0"))
                  ((stringp dep)
                   (error "Invalid requirement specifier: %S" dep))
+                 ((and (listp dep) (null (cdr dep)))
+                  (list (car dep) "0"))
                  (t dep)))
               deps))))