gnu: Add emacs-auctex.

* gnu/packages/emacs.scm: New variable.

gnu/packages/emacs.scm

@@ -3,6 +3,7 @@
 ;;; Copyright © 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2014 Alex Kost <alezost@gmail.com>
+;;; Copyright © 2015 Federico Beffa <beffa@fbengineering.ch>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -25,6 +26,7 @@ (define-module (gnu packages emacs)
   #:use-module (guix download)
   #:use-module (guix git-download)
   #:use-module (guix build-system gnu)
+  #:use-module (guix build-system emacs)
   #:use-module (guix build-system glib-or-gtk)
   #:use-module (guix build-system trivial)
   #:use-module (gnu packages)
@@ -776,3 +778,28 @@ (define-public bbdb
 like.  It can be linked with various Emacs mail clients (Message and Mail
 mode, Rmail, Gnus, MH-E, and VM).  BBDB is fully customizable.")
     (license license:gpl3+)))
+
+(define-public emacs-auctex
+  (package
+    (name "emacs-auctex")
+    (version "11.88.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "http://elpa.gnu.org/packages/auctex-"
+             version
+             ".tar"))
+       (sha256
+        (base32
+         "1pmki8hdjjikxlvip3pzi350bln3gcimr27yjf0xfwjvnp5hh9nc"))))
+    (build-system emacs-build-system)
+    (native-inputs
+     `(("perl" ,perl)))
+    (home-page "http://www.gnu.org/software/auctex/")
+    (synopsis "Integrated environment for TeX")
+    (description
+     "AUCTeX is a comprehensive customizable integrated environment for
+writing input files for TeX, LaTeX, ConTeXt, Texinfo, and docTeX using Emacs
+or XEmacs.")
+    (license license:gpl3+)))