anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "polari";
  -  version = "42.1";
  +  version = "43.0";
   
     src = fetchurl {
       url = "mirror://gnome/sources/${pname}/${lib.versions.major version}/${pname}-${version}.tar.xz";
  -    sha256 = "r5DPCEjsvkB+sjBkBINpdP048xww1HT0bRspIYqWaz0=";
  +    sha256 = "F6GS3uYfWOPNRHJQC+cBGUa5n75SvFrBJPqurC8zQUc=";
     };
   
     patches = [
  
positive.code: , gtk3
  , glib
  , libsecret
  , libsoup
  , webkitgtk
  , gobject-introspection
  , appstream-glib
  , gnome
  
negative.code:     gspell
      gdk-pixbuf
      libsecret
      libsoup_3
      webkitgtk_4_1 # for thumbnailer
    ];
  
    postFixup = ''
  