anchor.diff:  
     installPhase = ''
       ninja install
  +    wrapProgram $out/bin/lightdm-webkit2-greeter \
  +      --prefix LD_LIBRARY_PATH : ${libPath} \
     '';
   
   }
  
positive.code: { stdenv, fetchgit, lightdm, dbus_glib, gtk3, webkitgtk, ninja, pkgconfig
  , gobjectIntrospection , gettext , meson , glib , lib
  }:
  
  stdenv.mkDerivation rec {
  
    name = "lightdm-webkit2-greeter-2.2.3";
  
  
negative.code: 
    buildInputs = [
      lightdm dbus_glib gtk3 webkitgtk meson ninja
      pkgconfig xorg.libX11 glib
      gettext makeWrapper
    ];
  
    libPath = stdenv.lib.makeLibraryPath buildInputs;
  
    patches = [ ./lang.patch ];
  
  