anchor.diff:  { stdenv
   , lib
   , desktop-file-utils
  -, fetchpatch
   , fetchurl
   , glib
  +, gettext
   , gtk4
   , libadwaita
   , meson
  
positive.code:     pkg-config
      desktop-file-utils
      wrapGAppsHook4
    ];
  
    buildInputs = [
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "d-spy";
    version = "1.2.1";
  
    outputs = [ "out" "lib" "dev" ];
  
    src = fetchurl {
      url = "mirror://gnome/sources/dspy/${lib.versions.majorMinor version}/dspy-${version}.tar.xz";
      sha256 = "TjnA1to687eJASJd0VEjOFe+Ihtfs62CwdsVhyNrZlI=";
    };
  
    nativeBuildInputs = [
      meson
  