;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages emacs)
  #:use-module (guix licenses)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix build-system gnu)
  #:use-module (gnu packages)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages gnutls)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages guile)
  #:use-module (gnu packages xorg)
  #:use-module (gnu packages lesstif)
  #:use-module (gnu packages libjpeg)
  #:use-module (gnu packages libtiff)
  #:use-module (gnu packages libpng)
  #:use-module ((gnu packages compression)
                #:renamer (symbol-prefix-proc 'compression:))
  #:use-module (gnu packages xml)
  #:use-module (gnu packages glib))

(define-public emacs
  (package
    (name "emacs")
    (version "24.3")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://gnu/emacs/emacs-"
                                 version ".tar.xz"))
             (sha256
              (base32
               "1385qzs3bsa52s5rcncbrkxlydkw0ajzrvfxgv8rws5fx512kakh"))
             (patches (list (search-patch "emacs-configure-sh.patch")))))
    (build-system gnu-build-system)
    (arguments
     '(#:configure-flags
       (list (string-append "--with-crt-dir=" (assoc-ref %build-inputs "libc")
                            "/lib")
             "--with-gif=no")                     ; XXX: add libungif
       #:phases (alist-cons-before
                 'configure 'fix-/bin/pwd
                 (lambda _
                   ;; Use `pwd', not `/bin/pwd'.
                   (substitute* (find-files "." "^Makefile\\.in$")
                     (("/bin/pwd")
                      "pwd")))
                 %standard-phases)))
    (inputs
     `(("pkg-config" ,pkg-config)
       ("gnutls" ,gnutls)
       ("texinfo" ,texinfo)
       ("ncurses" ,ncurses)

       ;; TODO: Add the optional dependencies.
       ("xlibs" ,libx11)
       ("gtk+" ,gtk+-2)
       ("libXft" ,libxft)
       ("libtiff" ,libtiff)
       ;; ("libungif" ,libungif)
       ("libjpeg" ,libjpeg-8)

       ;; When looking for libpng `configure' links with `-lpng -lz', so we
       ;; must also provide zlib as an input.
       ("libpng" ,libpng)
       ("zlib" ,compression:zlib)

       ("libXpm" ,libxpm)
       ("libxml2" ,libxml2)
       ("dbus" ,dbus)))
    (home-page "http://www.gnu.org/software/emacs/")
    (synopsis "The extensible, customizable, self-documenting text editor")
    (description
     "Emacs is an extensible and highly customizable text editor.  It is
based on an Emacs Lisp interpreter which has extensions to support text
editing.  Due to its unique structure, it can be configured in an infinite
multitude of ways, which has given rise to a vast array of packages that have
been written for it that do everything from working as an email client to
communicating online via IRC or XMPP.  Emacs is fully self-documenting and it
features full Unicode support for nearly every human language.")
    (license gpl3+)))


;;;
;;; Emacs hacking.
;;;

(define-public geiser
  (package
    (name "geiser")
    (version "0.4")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://savannah/geiser/" version
                                 "/geiser-" version ".tar.gz"))
             (sha256
              (base32 "0ds7zk9b1839l9fsqfsgrby6manvy1cf5bjniiqhxl55h0cr6ijp"))))
    (build-system gnu-build-system)
    (inputs `(("guile" ,guile-2.0)
              ("emacs" ,emacs)))
    (home-page "http://nongnu.org/geiser/")
    (synopsis "Collection of Emacs modes for Guile and Racket hacking")
    (description
     "Geiser is a collection of Emacs major and minor modes that
conspire with one or more Scheme interpreters to keep the Lisp Machine
Spirit alive.  It draws inspiration (and a bit more) from environments
such as Common Lisp’s Slime, Factor’s FUEL, Squeak or Emacs itself, and
does its best to make Scheme hacking inside Emacs (even more) fun.

Or, to be precise, what i consider fun.  Geiser is thus my humble
contribution to the dynamic school of expression, and a reaction against
what i perceive as a derailment, in modern times, of standard Scheme
towards the static camp.  Because i prefer growing and healing to poking
at corpses, the continuously running Scheme interpreter takes the center
of the stage in Geiser.  A bundle of Elisp shims orchestrates the dialog
between the Scheme interpreter, Emacs and, ultimately, the schemer,
giving her access to live metadata.")
    (license bsd-3)))