anchor.diff:        address = mkOption {
           description = "Kubernetes proxy listening address.";
           default = "0.0.0.0";
  +        type = types.str;
  +      };
  +
  +      master = mkOption {
  +        description = "Kubernetes apiserver address";
  +        default = "${cfg.apiserver.address}:${toString cfg.apiserver.port}";
           type = types.str;
         };
   
  
positive.code: 
        machines = mkOption {
          description = "Kubernetes controller list of machines to schedule to schedule onto";
          default = [];
          type = types.listOf types.str;
        };
  
  
negative.code:             --secure_port=${toString cfg.apiserver.securePort} \
              --portal_net=${cfg.apiserver.portalNet} \
              --logtostderr=true \
              --runtime_config=api/v1beta3 \
              ${optionalString cfg.verbose "--v=6 --log_flush_frequency=1s"} \
              ${cfg.apiserver.extraOpts}
            '';
  