(:name elisp-slime-nav
       :type github
       :pkgname "purcell/elisp-slime-nav"
       :description "Slime-style navigation for Emacs Lisp"
       :prepare (add-hook 'emacs-lisp-mode-hook
                          (defun turn-elisp-slime-nav-on ()
                            (elisp-slime-nav-mode t))))