ensure-packages.el

(defvar packages
  '(gist clojure-mode coffee-mode auctex
         haml-mode haskell-mode inf-ruby
         magit magithub markdown-mode paredit python
         sass-mode rainbow-mode scss-mode
         yaml-mode undo-tree)
  "Packages that should always be installed.")

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

(provide 'ensure-packages)