Update to Drupal 8.0.2. For more information, see https://www.drupal.org/drupal-8.0.2-release-notes

core/lib/Drupal/Core/Config/ConfigInstaller.php

@@ -7,6 +7,7 @@
 
 namespace Drupal\Core\Config;
 
+use Drupal\Component\Utility\Crypt;
 use Drupal\Component\Utility\Unicode;
 use Drupal\Core\Config\Entity\ConfigDependencyManager;
 use Drupal\Core\Config\Entity\ConfigEntityDependency;
@@ -279,6 +280,12 @@ class ConfigInstaller implements ConfigInstallerInterface {
       }
       if ($config_to_create[$name] !== FALSE) {
         $new_config->setData($config_to_create[$name]);
+        // Add a hash to configuration created through the installer so it is
+        // possible to know if the configuration was created by installing an
+        // extension and to track which version of the default config was used.
+        if (!$this->isSyncing() && $collection == StorageInterface::DEFAULT_COLLECTION) {
+          $new_config->set('_core.default_config_hash', Crypt::hashBase64(serialize($config_to_create[$name])));
+        }
       }
       if ($collection == StorageInterface::DEFAULT_COLLECTION && $entity_type = $this->configManager->getEntityTypeIdByName($name)) {
         // If we are syncing do not create configuration entities. Pluggable

core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php

@@ -103,6 +103,17 @@ abstract class ConfigEntityBase extends Entity implements ConfigEntityInterface
    */
   protected $third_party_settings = array();
 
+  /**
+   * Information maintained by Drupal core about configuration.
+   *
+   * Keys:
+   * - default_config_hash: A hash calculated by the config.installer service
+   *   and added during installation.
+   *
+   * @var array
+   */
+  protected $_core = [];
+
   /**
    * Trust supplied data and not use configuration schema on save.
    *
@@ -296,6 +307,9 @@ abstract class ConfigEntityBase extends Entity implements ConfigEntityInterface
     if (empty($this->third_party_settings)) {
       unset($properties['third_party_settings']);
     }
+    if (empty($this->_core)) {
+      unset($properties['_core']);
+    }
     return $properties;
   }
 

core/lib/Drupal/Core/Config/Entity/ConfigEntityBundleBase.php

@@ -54,6 +54,7 @@ abstract class ConfigEntityBundleBase extends ConfigEntityBase {
       }
       // Entity bundle field definitions may depend on bundle settings.
       $entity_manager->clearCachedFieldDefinitions();
+      $entity_manager->clearCachedBundles();
     }
   }
 

core/lib/Drupal/Core/Config/Entity/ConfigEntityStorageInterface.php

@@ -18,10 +18,10 @@ interface ConfigEntityStorageInterface extends EntityStorageInterface {
    * Extracts the configuration entity ID from the full configuration name.
    *
    * @param string $config_name
-   *   The full configuration name to extract the ID from. E.g.
+   *   The full configuration name to extract the ID from; for example,
    *   'views.view.archive'.
    * @param string $config_prefix
-   *   The config prefix of the configuration entity. E.g. 'views.view'
+   *   The config prefix of the configuration entity; for example, 'views.view'.
    *
    * @return string
    *   The ID of the configuration entity.

core/lib/Drupal/Core/Config/Entity/ConfigEntityType.php

@@ -157,6 +157,7 @@ class ConfigEntityType extends EntityType implements ConfigEntityTypeInterface {
           'status' => 'status',
           'dependencies' => 'dependencies',
           'third_party_settings' => 'third_party_settings',
+          '_core' => '_core',
         ];
         foreach ($this->config_export as $property => $name) {
           if (is_numeric($property)) {

core/lib/Drupal/Core/Config/InstallStorage.php

@@ -80,9 +80,9 @@ class InstallStorage extends FileStorage {
    *   The path to the configuration file.
    *
    * @todo Improve this when figuring out how we want to handle configuration in
-   *   installation profiles. E.g., a config object actually has to be searched
-   *   in the profile first (whereas the profile is never the owner), only
-   *   afterwards check for a corresponding module or theme.
+   *   installation profiles. For instance, a config object actually has to be
+   *   searched in the profile first (whereas the profile is never the owner);
+   *   only afterwards check for a corresponding module or theme.
    */
   public function getFilePath($name) {
     $folders = $this->getAllFolders();