anchor.diff: -{ mkDerivation, lib, fetchFromGitHub, callPackage, fetchpatch
  +{ mkDerivation, lib, fetchFromGitHub, callPackage
   , pkg-config, cmake, ninja, python3, wrapGAppsHook, wrapQtAppsHook
   , extra-cmake-modules
   , qtbase, qtimageformats, gtk3, libsForQt5, lz4, xxHash
  
positive.code:   tg_owt = callPackage ./tg_owt.nix {};
  in mkDerivation rec {
    pname = "telegram-desktop";
    version = "2.8.11";
    # Note: Update via pkgs/applications/networking/instant-messengers/telegram/tdesktop/update.py
  
    # Telegram-Desktop with submodules
  
negative.code:     repo = "tdesktop";
      rev = "v${version}";
      fetchSubmodules = true;
      sha256 = "0964as7rkjq1px6z15z6kmkiz4zw69wmm3namwn940bsja123qls";
    };
  
    postPatch = ''
      substituteInPlace Telegram/CMakeLists.txt \
  