gnu: Add IceCat.

* gnu/packages/gnuzilla.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

gnu-system.am

@@ -78,6 +78,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/gnunet.scm			\
   gnu/packages/gnupg.scm			\
   gnu/packages/gnutls.scm			\
+  gnu/packages/gnuzilla.scm			\
   gnu/packages/gperf.scm			\
   gnu/packages/gprolog.scm			\
   gnu/packages/graphviz.scm			\

gnu/packages/gnuzilla.scm

@@ -0,0 +1,97 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 Andreas Enge <andreas@enge.fr>
+;;;
+;;; 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 gnuzilla)
+  #:use-module (gnu packages)
+  #:use-module ((guix licenses)
+                #:renamer (symbol-prefix-proc 'license:))
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages glib)
+  #:use-module (gnu packages gstreamer)
+  #:use-module (gnu packages gtk)
+  #:use-module (gnu packages linux)
+  #:use-module (gnu packages perl)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages python)
+  #:use-module (gnu packages xorg)
+  #:use-module (gnu packages yasm)
+  #:use-module (gnu packages zip))
+
+(define-public icecat
+  (package
+    (name "icecat")
+    (version "24.0")
+    (source
+     (origin
+      (method url-fetch)
+      (uri (string-append "mirror://gnu/gnuzilla/"
+                          (substring version 0 (string-index version #\.))
+                          "/icecat-" version ".tar.gz"))
+      (sha256
+       (base32
+        "1vxzjwmhad6yxx4sk9zvapjgv5salcv10id061q0991ii3dycy9a"))))
+    (build-system gnu-build-system)
+    (inputs
+     `(("alsa-lib" ,alsa-lib)
+       ("dbus" ,dbus)
+       ("dbus-glib" ,dbus-glib)
+       ("glib" ,glib)
+       ("gstreamer" ,gstreamer-0.10)
+       ("gst-plugins-base" ,gst-plugins-base-0.10)
+       ("gtk+" ,gtk+-2)
+       ("libxt" ,libxt)
+       ("mesa" ,mesa)
+       ("perl" ,perl)
+       ("pkg-config" ,pkg-config)
+       ("python" ,python-2) ; Python 3 not supported
+       ("python2-pysqlite" ,python2-pysqlite)
+       ("unzip" ,unzip)
+       ("yasm" ,yasm)
+       ("zip" ,zip)))
+    (arguments
+     `(#:tests? #f ; no check target
+       #:phases
+         (alist-cons-before
+          'patch-source-shebangs 'sanitise
+          (lambda _
+            ;; delete dangling symlinks
+            (delete-file "browser/base/content/.#aboutDialog.xul")
+            (delete-file "browser/base/content/abouthome/.#aboutHome.xhtml")
+            (delete-file "browser/branding/unofficial/content/.#aboutHome.xhtml")
+            (delete-file "toolkit/crashreporter/google-breakpad/autotools/compile"))
+         (alist-replace
+          'configure
+          ;; configure does not work followed by both "SHELL=..." and
+          ;; "CONFIG_SHELL=..."; set environment variables instead
+          (lambda* (#:key outputs configure-flags #:allow-other-keys)
+            (let ((out (assoc-ref outputs "out")))
+              (setenv "SHELL" (which "bash"))
+              (setenv "CONFIG_SHELL" (which "bash"))
+              (zero? (system* "./configure"
+                              (string-append "--prefix=" out)
+                              "--disable-webrtc")))) ; webrtc creates an error
+          %standard-phases))))
+    (home-page "http://www.gnu.org/software/gnuzilla/")
+    (synopsis "Entirely free browser derived from Mozilla Firefox")
+    (description
+     "IceCat is the GNU version of the Firefox browser.  It is entirely free
+software, which does not recommend non-free plugins and addons. It also
+features extra privacy-protecting features built in.")
+    (license license:mpl2.0))) ; and others, see toolkit/content/license.html