anchor.diff:  
     patches = [ ./xfce4-settings-default-icon-theme.patch ];
   
  -  nativeBuildInputs =
  -    [ pkgconfig intltool
  -    ];
  +  postPatch = ''
  +    for f in $(find . -name \*.c); do
  +      substituteInPlace $f --replace \"libinput-properties.h\" '<xorg/libinput-properties.h>'
  +    done
  +  '';
   
  -  buildInputs =
  -    [ exo gtk libxfce4util libxfce4ui libglade upower xfconf
  -      xorg.libXi xorg.libXcursor libwnck libnotify libxklavier garcon
  -    ]; #TODO: optional packages
  +  nativeBuildInputs = [ pkgconfig intltool ];
  +
  +  buildInputs = [
  +    exo
  +    gtk
  +    garcon
  +    libxfce4util
  +    libxfce4ui
  +    xfconf
  +    libXi
  +    upower
  +    libnotify
  +    libXcursor
  +    xf86inputlibinput
  +    libxklavier
  +  ];
   
     configureFlags = [ "--enable-pluggable-dialogs" "--enable-sound-settings" ];
   
  
positive.code:     maintainers = [ maintainers.eelco ];
    };
  }
  
  
negative.code: { stdenv, fetchurl, pkgconfig, intltool, exo, gtk, garcon, libxfce4util
  , libxfce4ui, xfconf, libXi, upower ? null, libnotify ? null
  , libXcursor ? null, xf86inputlibinput ? null, libxklavier ? null }:
  
  let
    p_name  = "xfce4-settings";
    ver_maj = "4.12";
  