gnu: Add dwm.

* gnu/packages/dwm.scm: New file.
* Makefile.am: Add it.

Makefile.am

@@ -79,6 +79,7 @@ MODULES =					\
   gnu/packages/cyrus-sasl.scm			\
   gnu/packages/dejagnu.scm			\
   gnu/packages/ddrescue.scm			\
+  gnu/packages/dwm.scm				\
   gnu/packages/ed.scm				\
   gnu/packages/emacs.scm			\
   gnu/packages/fdisk.scm			\

gnu/packages/dwm.scm

@@ -0,0 +1,86 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 Cyril Roelandt <tipecaml@gmail.com>
+;;;
+;;; 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 dwm)
+  #: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 xorg))
+
+(define-public dwm
+  (package
+    (name "dwm")
+    (version "6.0")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append "http://dl.suckless.org/dwm/dwm-"
+                                 version ".tar.gz"))
+             (sha256
+              (base32 "0mpbivy9j80l1jqq4bd4g4z8s5c54fxrjj44avmfwncjwqylifdj"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:tests? #f
+       #:phases
+       (alist-replace
+        'configure
+        (lambda _
+         (substitute* "Makefile" (("\\$\\{CC\\}") "gcc"))
+         #t)
+        (alist-replace
+         'install
+         (lambda* (#:key outputs #:allow-other-keys)
+          (let ((out (assoc-ref outputs "out")))
+           (zero?
+            (system* "make" "install"
+                     (string-append "DESTDIR=" out) "PREFIX="))))
+         %standard-phases))))
+    (inputs
+     `(("libx11" ,libx11)
+       ("libxinerama" ,libxinerama)))
+    (home-page "http://dwm.suckless.org/")
+    (synopsis "Dynamic window manager")
+    (description
+     "dwm is a dynamic window manager for X. It manages windows in tiled,
+monocle and floating layouts. All of the layouts can be applied dynamically,
+optimising the environment for the application in use and the task performed.
+
+In tiled layout windows are managed in a master and stacking area. The master
+area contains the window which currently needs most attention, whereas the
+stacking area contains all other windows. In monocle layout all windows are
+maximised to the screen size. In floating layout windows can be resized and
+moved freely. Dialog windows are always managed floating, regardless of the
+layout applied.
+
+Windows are grouped by tags. Each window can be tagged with one or multiple
+tags. Selecting certain tags displays all windows with these tags.
+
+Each screen contains a small status bar which displays all available tags, the
+layout, the number of visible windows, the title of the focused window, and the
+text read from the root window name property, if the screen is focused. A
+floating window is indicated with an empty square and a maximised floating
+window is indicated with a filled square before the windows title. The selected
+tags are indicated with a different color. The tags of the focused window are
+indicated with a filled square in the top left corner. The tags which are
+applied to one or more windows are indicated with an empty square in the top
+left corner.
+
+dwm draws a small customizable border around windows to indicate the focus
+state.")
+    (license x11)))