anchor.diff:  
   python2Packages.buildPythonApplication rec {
     name = "virt-manager-${version}";
  -  version = "1.4.3";
  +  version = "1.5.0";
     namePrefix = "";
   
     src = fetchurl {
       url = "http://virt-manager.org/download/sources/virt-manager/${name}.tar.gz";
  -    sha256 = "093azs8p4p7y4nf5j25xpsvdxww7gky1g0hs8mkcvmpxl2wjd0jj";
  +    sha512 = "b375927776b9132fbd9dacd8223b6c94b89c32d6812394ec7e18df7c66f7e6dec853885e85e2b4b4ffd283e8afe0dd2526bafeac4b55511a4a115ef5798f97da";
     };
   
     nativeBuildInputs = [
  
positive.code: { stdenv, fetchurl, python2Packages, intltool, file
  , wrapGAppsHook, virtinst, gtkvnc, vte, avahi, dconf
  , gobjectIntrospection, libvirt-glib, system-libvirt
  , gsettings_desktop_schemas, glib, libosinfo, gnome3
  , spiceSupport ? true, spice_gtk ? null
  
negative.code:   ];
  
    buildInputs =
      [ libvirt-glib vte dconf gtkvnc gnome3.defaultIconTheme avahi
        gsettings_desktop_schemas libosinfo
      ] ++ optional spiceSupport spice_gtk;
  
    propagatedBuildInputs = with python2Packages;
      [
        pygobject3 ipaddr libvirt libxml2 requests
      ];
  
    patchPhase = ''
  