anchor.diff:  }
   
   /// The path to the `packages` directory from which pub loads its dependencies.
  -String get _packageRoot => path.absolute(Platform.packageRoot);
  +String get _packageRoot => p.absolute(Platform.packageRoot);
   
   /// Fails the current test if Git is not installed.
   ///
  
positive.code: String _sandboxDir;
  
  /// The path to the Dart repo's packages.
  final String pkgPath = path.absolute(path.join(
      path.dirname(Platform.executable),
      '..', '..', '..', '..', 'pkg'));
  
  /// The path of the package cache directory used for tests, relative to the
  /// sandbox directory.
  
negative.code: void scheduleSymlink(String target, String symlink) {
    schedule(
        () => createSymlink(
            p.join(sandboxDir, target),
            p.join(sandboxDir, symlink)),
        'symlinking $target to $symlink');
  }
  
  