anchor.diff: -{
  -lib, stdenv
  +{ lib
  +, stdenv
   , makeWrapper
   , makeDesktopItem
   , fetchurl
  
positive.code:       meta = with lib; {
          description = "Web Debugging Proxy";
          homepage = "https://www.charlesproxy.com/";
          maintainers = [ maintainers.kalbasit ];
          license = lib.licenses.unfree;
          platforms = lib.platforms.linux ++ lib.platforms.darwin;
        };
      };
  
  in {
    charles4 = (generic {
      version = "4.6.1";
      sha256 = "1kl83jjj5wjhdpj34gcj04vf1asxlqlfx9zi91ln4v90swlaaclv";
      platform = "_amd64";
      jdk = jdk11;
    });
  
negative.code:     jdk = jdk8.jre;
    });
  }
  