anchor.diff:  
       if (androidSdk != null) {
         printTrace('Using Android SDK at ${androidSdk.directory}.');
  -
         if (androidSdk.latestVersion != null)
           printTrace('${androidSdk.latestVersion}');
       }
  -
  -    ArtifactStore.flutterRoot = path.normalize(path.absolute(globalResults['flutter-root']));
  -    if (globalResults.wasParsed('package-root'))
  -      ArtifactStore.packageRoot = path.normalize(path.absolute(globalResults['package-root']));
   
       if (globalResults['version']) {
         printStatus(getVersion(ArtifactStore.flutterRoot));
  
positive.code:         defaultsTo: 'out/ios_sim_Release/');
    }
  
    String get usageFooter =>
      'Run "flutter -h -v" for verbose help output, including less commonly used options.\n'
      '\n'
      '${doctor.summaryText}';
  
    List<BuildConfiguration> get buildConfigurations {
      if (_buildConfigurations == null)
  
negative.code:     if (globalResults['verbose'])
        logger.verbose = true;
  
      // we must set ArtifactStore.flutterRoot early because other features use it
      // (e.g. enginePath's initialiser uses it)
      ArtifactStore.flutterRoot = path.normalize(path.absolute(globalResults['flutter-root']));
      if (globalResults.wasParsed('package-root'))
        ArtifactStore.packageRoot = path.normalize(path.absolute(globalResults['package-root']));
  
      // See if the user specified a specific device.
      deviceManager.specifiedDeviceId = globalResults['device-id'];
  
  