anchor.diff:      };
       version = "0.3.1";
     };
  +  powerpack = {
  +    source = {
  +      remotes = ["https://rubygems.org"];
  +      sha256 = "1fnn3fli5wkzyjl4ryh0k90316shqjfnhydmc7f8lqpi0q21va43";
  +      type = "gem";
  +    };
  +    version = "0.1.1";
  +  };
  +  pry = {
  +    dependencies = ["coderay" "method_source"];
  +    source = {
  +      remotes = ["https://rubygems.org"];
  +      sha256 = "1mh312k3y94sj0pi160wpia0ps8f4kmzvm505i6bvwynfdh7v30g";
  +      type = "gem";
  +    };
  +    version = "0.11.3";
  +  };
     rack = {
       source = {
         remotes = ["https://rubygems.org"];
  
positive.code:       type = "gem";
      };
      version = "1.2.1";
    };
    selenium-webdriver = {
      dependencies = ["childprocess" "rubyzip" "websocket"];
  
negative.code:     };
      version = "2.4.0";
    };
    ast = {
      source = {
        remotes = ["https://rubygems.org"];
        sha256 = "184ssy3w93nkajlz2c70ifm79jp3j737294kbc5fjw69v1w0n9x7";
        type = "gem";
      };
      version = "2.4.0";
    };
    builder = {
      source = {
        remotes = ["https://rubygems.org"];
  