anchor.diff:  import 'dart:async';
   import 'dart:io';
   
  -import 'package:args/args.dart';
   import 'package:args/command_runner.dart';
   import 'package:logging/logging.dart';
   import 'package:path/path.dart' as path;
  
positive.code:     return file.absolute.path;
    }
  
    Future<int> _runAndroid(ArgResults results, String appPath) async {
      String skyViewerUrl = ArtifactStore.googleStorageUrl('viewer', 'android-arm');
      String command = await _makePathAbsolute(path.join(results['mojo-path'], 'mojo', 'devtools', 'common', 'mojo_run'));
      String appName = path.basename(appPath);
      String appDir = path.dirname(appPath);
      String buildFlag = argResults['mojo-debug'] ? '--debug' : '--release';
      List<String> args = [
        '--android',
        buildFlag,
  
negative.code: 
  final Logger _logging = new Logger('sky_tools.run_mojo');
  
  enum _MojoConfig { Debug, Release }
  
  class RunMojoCommand extends Command {
    final name = 'run_mojo';
    final description = 'Run a Flutter app in mojo.';
    RunMojoCommand() {
      argParser.addFlag('android', negatable: false, help: 'Run on an Android device');
      argParser.addFlag('checked', negatable: false, help: 'Run Flutter in checked mode');
      argParser.addFlag('mojo-debug', negatable: false, help: 'Use Debug build of mojo');
      argParser.addFlag('mojo-release', negatable: false, help: 'Use Release build of mojo (default)');
  
  