anchor.diff:  
   stdenv.mkDerivation (finalAttrs: rec {
     pname = "SwayNotificationCenter";
  -  version = "0.6.3";
  +  version = "0.7.1";
   
     src = fetchFromGitHub {
       owner = "ErikReider";
       repo = "SwayNotificationCenter";
       rev = "v${version}";
  -    hash = "sha256-79Kda2Mi2r38f0J12bRm9wbHiZCy9+ojPDxwlFG8EYw=";
  +    hash = "sha256-/rLzdli+/YTfk+jQ+RhHUEzeORVnJU4KHDlOG3QCPr0=";
     };
   
     nativeBuildInputs = [
  
positive.code:     meson
      ninja
      pkg-config
      scdoc
      vala
      wrapGAppsHook
  
negative.code:     # systemd # ends with broken permission
    ];
  
    postPatch = ''
      chmod +x build-aux/meson/postinstall.py
      patchShebangs build-aux/meson/postinstall.py
    '';
  
    passthru.tests.version = testers.testVersion {
  