diff -u b/core/lib/Drupal/Core/Extension/ModuleHandler.php b/core/lib/Drupal/Core/Extension/ModuleHandler.php
--- b/core/lib/Drupal/Core/Extension/ModuleHandler.php
+++ b/core/lib/Drupal/Core/Extension/ModuleHandler.php
@@ -721,6 +721,13 @@
       // Allow modules to react prior to the uninstallation of a module.
       $this->invokeAll('module_preuninstall', array($module));
 
+      // Remove all dependent configuration entities.
+      $dependent_entities = $this->findConfigEntityDependents(array($module));
+      foreach ($dependent_entities as $entity_type_id => $entities) {
+        $controller = \Drupal::entityManager()->getStorageController($entity_type_id);
+        $controller->delete($entities);
+      }
+
       // Uninstall the module.
       module_load_install($module);
       $this->invoke($module, 'uninstall');
@@ -729,12 +736,6 @@
       // Remove the module's entry from the config.
       $module_config->clear("enabled.$module")->save();
 
-      // Remove all dependent configuration entities.
-      $dependent_entities = $this->findConfigEntityDependents(array($module));
-      foreach ($dependent_entities as $entity_type_id => $entities) {
-        $controller = \Drupal::entityManager()->getStorageController($entity_type_id);
-        $controller->delete($entities);
-      }
       // Remove all configuration belonging to the module.
       \Drupal::service('config.manager')->uninstall('module', $module);
 
only in patch2:
unchanged:
--- a/core/lib/Drupal/Core/Config/ConfigInstaller.php
+++ b/core/lib/Drupal/Core/Config/ConfigInstaller.php
@@ -131,6 +131,8 @@ public function installDefaultConfig($type, $name) {
       }
       $this->configFactory->setOverrideState($old_state);
     }
+    // Reset all the static caches and list caches.
+    $this->configFactory->reset();
   }
 
 }
only in patch2:
unchanged:
--- a/core/modules/language/lib/Drupal/language/Entity/Language.php
+++ b/core/modules/language/lib/Drupal/language/Entity/Language.php
@@ -105,11 +105,35 @@ public function preSave(EntityStorageControllerInterface $storage_controller) {
    * @throws \RuntimeException
    */
   public static function preDelete(EntityStorageControllerInterface $storage_controller, array $entities) {
-    $default_language = \Drupal::service('language.default')->get();
+    $default_language = static::getDefaultLanguage();
     foreach ($entities as $entity) {
       if ($entity->id() == $default_language->id) {
         throw new DeleteDefaultLanguageException('Can not delete the default language');
       }
     }
   }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function hasDependency($type, $name) {
+    // Default languages can not be removed so do not allow them to be dependent
+    // on anything. This gets around the fact that uninstalling language would
+    // attempt to delete the default language which would cause the exception in
+    // \Drupal\language\Entity\Language::preDelete() to be thrown.
+    if ($this->id() == $this->getDefaultLanguage()->id) {
+      return FALSE;
+    }
+    return parent::hasDependency($type, $name);
+  }
+
+  /**
+   * Gets the default language.
+   *
+   * @return \Drupal\Core\Language\Language
+   */
+  protected static function getDefaultLanguage() {
+    return \Drupal::service('language.default')->get();
+  }
+
 }
only in patch2:
unchanged:
--- a/core/modules/views/lib/Drupal/views/Tests/ModuleTest.php
+++ b/core/modules/views/lib/Drupal/views/Tests/ModuleTest.php
@@ -151,6 +151,7 @@ public function customErrorHandler($error_level, $message, $filename, $line, $co
    */
   public function testLoadFunctions() {
     $this->enableModules(array('node'));
+    $this->installConfig(array('node'));
     $controller = $this->container->get('entity.manager')->getStorageController('view');
 
     // Test views_view_is_enabled/disabled.