anchor.diff:  stdenv.mkDerivation {
     name = "${pname}-${version}";
   
  -  src = fetchurl { 
  +  src = fetchurl {
       url = "http://cgit.freedesktop.org/cairo-ocaml/snapshot/cairo-ocaml-${version}.zip";
  -    sha256 = "2d59678e322c331e3f4bc02a77240fce4a0917acb0d3ae75953a6ac62d70a125";
  +    sha256 = "0l4p9bp6kclr570mxma8wafibr1g5fsjj8h10yr4b507g0hmlh0l";
     };
   
     patches = [ ./META.patch ];
   
  -  buildInputs = [ocaml automake gnum4 autoconf unzip pkgconfig findlib freetype lablgtk cairo gdk_pixbuf gtk pango ];
  +  buildInputs = [ ocaml automake gnum4 autoconf unzip pkgconfig
  +                  findlib freetype lablgtk cairo gdk_pixbuf gtk pango ];
   
     createFindlibDestdir = true;
   
    preConfigure = ''
      aclocal -I support
      autoconf
  -   export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE `pkg-config --cflags cairo gdk-pixbuf glib  gtk+ pango`" 
  +   export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE `pkg-config --cflags cairo gdk-pixbuf glib gtk+ pango`"
      export LABLGTKDIR=${lablgtk}/lib/ocaml/${ocaml_version}/site-lib/lablgtk2
      cp ${lablgtk}/lib/ocaml/${ocaml_version}/site-lib/lablgtk2/pango.ml ./src
      cp ${lablgtk}/lib/ocaml/${ocaml_version}/site-lib/lablgtk2/gaux.ml ./src
  
positive.code: {stdenv, fetchurl, automake, ocaml, autoconf, gnum4, pkgconfig, freetype, lablgtk, unzip, cairo, findlib, gdk_pixbuf, glib, gtk, pango }: 
  
  let
    ocaml_version = (builtins.parseDrvName ocaml.name).version;
  
negative.code:     homepage = http://cairographics.org/cairo-ocaml;
      description = "ocaml bindings for cairo library";
      license = stdenv.lib.licenses.gpl2;
      platforms = stdenv.lib.platforms.linux;
    };
  }
  