anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "easyeffects";
  -  version = "6.2.8";
  +  version = "6.3.0";
   
     src = fetchFromGitHub {
       owner = "wwmm";
       repo = "easyeffects";
       rev = "v${version}";
  -    sha256 = "sha256-iADECt0m74Irm3JEQgZVLCr6Z2SKATAh9SvPwzd7HCo=";
  +    sha256 = "sha256-OLxuE1jiALuKlC9U9esVlhaMBEaoZyNae8OO8upE4ZM=";
     };
   
     nativeBuildInputs = [
  
positive.code:     tbb
      zita-convolver
    ];
  
    postPatch = ''
      chmod +x meson_post_install.py
      patchShebangs meson_post_install.py
    '';
  
    preFixup =
      let
  
negative.code:     meson
      ninja
      pkg-config
      wrapGAppsHook4
    ];
  
  