Added vips image processing system and GUI (close #5766)

VIPS is a free image processing system for large images, nip2 is its GUI

pkgs/tools/graphics/nip2/default.nix

@@ -0,0 +1,24 @@
+{ stdenv, fetchurl, pkgconfig, glib, libxml2, flex, bison, vips, gnome,
+fftw, gsl, goffice_0_8, libgsf }:
+
+stdenv.mkDerivation rec {
+  name = "nip2-7.42.1";
+
+  src = fetchurl {
+    url = "http://www.vips.ecs.soton.ac.uk/supported/current/${name}.tar.gz";
+    sha256 = "14lfyn0azswrz8r81ign9lbpxzk7ibmnnp03a3l8wgxvm2j9a7jl";
+  };
+
+  buildInputs =
+  [ pkgconfig glib libxml2 flex bison vips
+    gnome.gtk fftw gsl goffice_0_8 libgsf
+  ];
+
+  meta = with stdenv.lib; {
+    homepage = http://www.vips.ecs.soton.ac.uk;
+    description = "Graphical user interface for VIPS image processing system";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ kovirobi ];
+    platforms = platforms.linux;
+  };
+}

pkgs/tools/graphics/vips/default.nix

@@ -0,0 +1,27 @@
+{ stdenv, fetchurl, pkgconfig, glib, libxml2, flex, bison, vips, gnome,
+  fftw, orc, lcms, imagemagick, openexr, libtiff, libjpeg, libgsf, libexif,
+  python27, libpng, matio ? null, cfitsio ? null, libwebp ? null
+}:
+
+stdenv.mkDerivation rec {
+  name = "vips-7.42.1";
+
+  src = fetchurl {
+    url = "http://www.vips.ecs.soton.ac.uk/supported/current/${name}.tar.gz";
+    sha256 = "1gvazsyfa8w9wdwz89rpa1xmfpyk3b0cp4kkila1r9jc3sqp5qjy";
+  };
+
+  buildInputs =
+    [ pkgconfig glib libxml2 fftw orc lcms
+      imagemagick openexr libtiff libjpeg
+      libgsf libexif python27 libpng
+    ];
+
+  meta = with stdenv.lib; {
+    homepage = http://www.vips.ecs.soton.ac.uk;
+    description = "Image processing system for large images";
+    license = licenses.lgpl2Plus;
+    maintainers = with maintainers; [ kovirobi ];
+    platforms = platforms.linux;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -13143,6 +13143,9 @@ let
     desktopName = "Vimb";
   };
 
+  vips = callPackage ../tools/graphics/vips { };
+  nip2 = callPackage ../tools/graphics/nip2 { };
+
   VisualBoyAdvance = callPackage ../misc/emulators/VisualBoyAdvance { };
 
   # Wine cannot be built in 64-bit; use a 32-bit build instead.