anchor.diff:      fontconfig
       freetype
       glib
  -    gnome2.GConf
  -    gnome2.gdk_pixbuf
  -    gnome2.gtk
  -    gnome2.pango
  +    gnome3.gconf
  +    gdk_pixbuf
  +    gtk3
  +    pango
       libnotify
       libxcb
       nspr
  
positive.code: { stdenv, fetchurl, dpkg
  , alsaLib, atk, cairo, cups, curl, dbus, expat, fontconfig, freetype, glib
  , gnome2, libnotify, libxcb, nspr, nss, systemd, xorg }:
  
  let
  
    version = "3.1.0";
  
    rpath = stdenv.lib.makeLibraryPath [
      alsaLib
  
negative.code: 
    inherit src;
  
    buildInputs = [
      dpkg
      gtk3  # needed for GSETTINGS_SCHEMAS_PATH
    ];
  
    nativeBuildInputs = [ makeWrapper ];
  
    unpackPhase = "true";
    buildCommand = ''
      mkdir -p $out
  