anchor.diff:    /**
      * The version of data format, should be incremented on every format change.
      */
  -  static const int DATA_VERSION = 7;
  +  static const int DATA_VERSION = 8;
   
     /**
      * The name of the driver, e.g. the name of the folder.
  
positive.code:           String key = '${library.transitiveSignature}.linked';
            List<int> bytes = _byteStore.get(key);
            if (bytes != null) {
              PackageBundle linked = new PackageBundle.fromBuffer(bytes);
              _addToStoreLinked(
                  store, library.uriStr, linked.linkedLibraries.single);
            } else {
              libraryUrisToLink.add(library.uriStr);
            }
  
negative.code:       linkedLibraries.forEach((uri, linkedBuilder) {
          FileState library = libraries[uri];
          String key = '${library.transitiveSignature}.linked';
          List<int> bytes = linkedBuilder.toBuffer();
          LinkedLibrary linked = new LinkedLibrary.fromBuffer(bytes);
          _addToStoreLinked(store, uri, linked);
          _byteStore.put(key, bytes);
        });
  
  