anchor.diff:  , ninja
   , fetchurl
   , pkg-config
  -, gtk3
  +, gtk4
   , glib
   , gdk-pixbuf
   , desktop-file-utils
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "gnome-tour";
    version = "40.1";
  
    src = fetchurl {
      url = "mirror://gnome/sources/${pname}/${lib.versions.major version}/${pname}-${version}.tar.xz";
      hash = "sha256-rYYS110B7qY8WcmY65KOvm75mEZgYbn8H97IKF02M5g=";
    };
  
    cargoVendorDir = "vendor";
  
negative.code:   buildInputs = [
      gdk-pixbuf
      glib
      gtk4
      libadwaita
      librsvg
    ];
  
    passthru = {
      updateScript = gnome.updateScript {
  