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;;; el-get-install.el --- installer for the lazy
;; Copyright (C) 2010 Dimitri Fontaine
;; Author: Dimitri Fontaine <>
;; URL:
;; Created: 2010-06-17
;; Keywords: emacs package elisp install elpa git git-svn bzr cvs apt-get fink http http-tar
;; Licence: WTFPL, grab your copy here:
;; This file is NOT part of GNU Emacs.
;; bootstrap your el-get installation, the goal is then to use el-get to
;; update el-get.
;; So the idea is that you copy/paste this code into your *scratch* buffer,
;; hit C-j, and you have a working el-get.
(let ((el-get-root
(or (bound-and-true-p el-get-dir)
(concat (file-name-as-directory user-emacs-directory) "el-get")))))
(when (file-directory-p el-get-root)
(add-to-list 'load-path el-get-root))
;; try to require el-get, failure means we have to install it
(unless (require 'el-get nil t)
(unless (file-directory-p el-get-root)
(make-directory el-get-root t))
(let* ((package "el-get")
(buf (switch-to-buffer "*el-get bootstrap*"))
(pdir (file-name-as-directory (concat el-get-root package)))
(git (or (executable-find "git")
(error "Unable to find `git'")))
(url (or (bound-and-true-p el-get-git-install-url)
(default-directory el-get-root)
(process-connection-type nil) ; pipe, no pty (--no-progress)
;; First clone el-get
git nil `(,buf t) t "--no-pager" "clone" "-v" url package)))
(unless (zerop status)
(error "Couldn't clone el-get from the Git repository: %s" url))
;; switch branch if we have to
(let* ((branch (cond
;; Check if a specific branch is requested
((bound-and-true-p el-get-install-branch))
;; Check if master branch is requested
((boundp 'el-get-master-branch) "master")
;; Read the default branch from the el-get recipe
((plist-get (with-temp-buffer
(expand-file-name "recipes/el-get.rcp" pdir))
(read (current-buffer)))
;; As a last resort, use the master branch
(remote-branch (format "origin/%s" branch))
(default-directory pdir)
(if (string-equal branch "master")
(call-process git nil (list buf t) t "checkout" "-t" remote-branch))))
(unless (zerop bstatus)
(error "Couldn't `git checkout -t %s`" branch)))
(add-to-list 'load-path pdir)
(load package)
(let ((el-get-default-process-sync t) ; force sync operations for installer
(el-get-verbose t)) ; let's see it all
(el-get-post-install "el-get"))
(unless (boundp 'el-get-install-skip-emacswiki-recipes)
(with-current-buffer buf
(goto-char (point-max))
(insert "\nCongrats, el-get is installed and ready to serve!")))))
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