anchor.diff:  
     buildInputs = [
       glib
  -    gtk3
  +    gtk4
  +    libadwaita
       udev
  +    upower
       libnotify
  -    libcanberra-gtk3
  -    gnome.adwaita-icon-theme
  +    gsound
       gsettings-desktop-schemas
     ];
   
  
positive.code:   };
  
    meta = with lib; {
      homepage = "https://help.gnome.org/users/gnome-bluetooth/stable/index.html.en";
      description = "Application that lets you manage Bluetooth in the GNOME desktop";
      maintainers = teams.gnome.members;
      license = licenses.gpl2Plus;
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "gnome-bluetooth";
    version = "42.beta";
  
    # TODO: split out "lib"
    outputs = [ "out" "dev" "devdoc" "man" ];
  
    src = fetchurl {
      url = "mirror://gnome/sources/${pname}/${lib.versions.major version}/${pname}-${version}.tar.xz";
      sha256 = "1Qn47dpsMIU7kx3M4y4km9SdvKuLxFSUHqmP/fHuvao=";
    };
  
    nativeBuildInputs = [
  