anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "gtk4";
  -  version = "4.8.1";
  +  version = "4.8.2";
   
     outputs = [ "out" "dev" ] ++ lib.optionals x11Support [ "devdoc" ];
     outputBin = "dev";
  
positive.code: 
    src = fetchurl {
      url = "mirror://gnome/sources/gtk/${lib.versions.majorMinor version}/gtk-${version}.tar.xz";
      sha256 = "XOjY3piiO9DI7KGmEJThwAm18AncvWC0XpkKjbG3Qv0=";
    };
  
    depsBuildBuild = [
  
negative.code:     chmod +x ''${files[@]}
      patchShebangs ''${files[@]}
  
    '';
  
    preInstall = ''
  