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Emacs package-install inserting extra dash?

I'm trying to have all of my dependencies install automatically for a new Emacs install. When I put the snippet below in my .emacs I keep getting: Package `smex-' is unavailable.

I was wondering if this is expected functionality? The Emacs starter-kit did something similar which I remember working before. Using Emacs 24.3.

(when (not package-archive-contents)
  (package-refresh-contents))

(defvar my-packages
  '(smex))

(dolist (p my-packages)
  (let ((s (symbol-name p)))
    (when (not (package-installed-p s))
      (package-install s))))

EDIT

Apparently this was caused by a bug or something. I was able to get it to work now in latest Emacs 24.3.1. Apparently they've also changed it so that package names should be symbols. 

(package-initialize)

(when (not package-archive-contents)
  (package-refresh-contents))

(defvar my-packages
  '(list of packages))

(dolist (p my-packages)
  (when (not (package-installed-p p))
    (package-install p)))
Solution

  • See package-compute-transaction:

    (error "Package `%s-%s' is unavailable"
       (symbol-name next-pkg)
       (package-version-join next-version))