anchor.diff:            " binary to use.";
       }
   
  -    if (crossDir.existsSync()) return cross;
  -
  -    return normal;
  +    return crossDir.existsSync() ? cross : normal;
     }
   }
   
  
positive.code: 
    /// The base directory named for this configuration, like:
    ///
    ///     none_vm_release_x64
    String _configurationDirectory;
  
    String get configurationDirectory {
  
negative.code: 
    /// The build directory path for this configuration, like:
    ///
    ///     build/ReleaseX64
    String get buildDirectory => system.outputDirectory + configurationDirectory;
  
    int _timeout;
  