anchor.diff:    }
   
     Future<Null> invalidateIfInitializingFromDill() async {
  +    if (_assumeInitializeFromDillUpToDate) return null;
       if (_kernelBinaryFilename != _kernelBinaryFilenameFull) return null;
       // If the generator is initialized, it's not going to initialize from dill
       // again anyway, so there's no reason to spend time invalidating what should
  
positive.code:     _kernelBinaryFilename = _kernelBinaryFilenameFull;
      _initializeFromDill =
          _options['initialize-from-dill'] ?? _kernelBinaryFilenameFull;
      _printIncrementalDependencies = _options['print-incremental-dependencies'];
      final String boundaryKey = Uuid().generateV4();
      _outputStream.writeln('result $boundaryKey');
  
negative.code:           'initialize from, but it can be overwritten here.',
        defaultsTo: null,
        hide: true)
    ..addFlag('assume-initialize-from-dill-up-to-date',
        help: 'Normally the dill used for initializing is checked against the '
            "files it was compiled against. If we somehow know that it's "
            'up-to-date we can skip it safely. Under normal circumstances this '
            "isn't safe though.",
        defaultsTo: false,
        hide: true)
    ..addMultiOption('define',
        abbr: 'D',
        help: 'The values for the environment constants (e.g. -Dkey=value).',
  