gnu: Add VTK.

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

gnu-system.am

@@ -235,6 +235,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/video.scm			\
   gnu/packages/vim.scm				\
   gnu/packages/vpn.scm				\
+  gnu/packages/vtk.scm				\
   gnu/packages/w3m.scm				\
   gnu/packages/wdiff.scm			\
   gnu/packages/web.scm				\

gnu/packages/vtk.scm

@@ -0,0 +1,61 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2014 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 vtk)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix licenses)
+  #:use-module (guix build-system cmake)
+  #:use-module (gnu packages xorg)
+  #:use-module (gnu packages gl))
+
+(define-public vtk
+  (package
+    (name "vtk")
+    (version "6.1.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "http://www.vtk.org/files/release/"
+                                  (substring version 0
+                                             (string-rindex version #\.))
+                                  "/VTK-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0d7shccdkyj4mbh2riilslgx3gd28in4c7xpm0lxa1ln8w5g2zdx"))))
+    (build-system cmake-build-system)
+    (arguments
+     ;; Build without '-g' to save space.
+     '(#:configure-flags '("-DCMAKE_BUILD_TYPE=Release")
+       #:tests? #f))                              ;XXX: no "test" target
+    (inputs
+     `(("libXt" ,libxt)
+       ("xproto" ,xproto)
+       ("libX11" ,libx11)
+       ("mesa" ,mesa)))
+    (home-page "http://www.vtk.org/")
+    (synopsis "Libraries for 3D computer graphics")
+    (description
+     "The Visualization Toolkit (VTK) is a C++ library for 3D computer graphics,
+image processing and visualization.  It supports a wide variety of
+visualization algorithms including: scalar, vector, tensor, texture, and
+volumetric methods; and advanced modeling techniques such as: implicit
+modeling, polygon reduction, mesh smoothing, cutting, contouring, and Delaunay
+triangulation.  VTK has an extensive information visualization framework, has
+a suite of 3D interaction widgets, supports parallel processing, and
+integrates with various databases on GUI toolkits such as Qt and Tk.")
+    (license bsd-3)))