diff --git a/core/lib/Drupal/Core/Config/ConfigInstaller.php b/core/lib/Drupal/Core/Config/ConfigInstaller.php
index ffdc760..c109ea7 100644
--- a/core/lib/Drupal/Core/Config/ConfigInstaller.php
+++ b/core/lib/Drupal/Core/Config/ConfigInstaller.php
@@ -9,6 +9,7 @@
 
 use Drupal\Component\Utility\Unicode;
 use Drupal\Core\Config\Entity\ConfigDependencyManager;
+use Drupal\Core\Config\Entity\ConfigEntityDependency;
 use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Site\Settings;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
@@ -141,16 +142,11 @@ public function installDefaultConfig($type, $name) {
         $storage = new FileStorage($optional_install_path, StorageInterface::DEFAULT_COLLECTION);
         $this->installOptionalConfig($storage, '');
       }
-      // Install any optional configuration entities whose type this extension
-      // provides. This searches all the installed modules config/optional
+      // Install any optional configuration entities whose dependencies can now
+      // be met. This searches all the installed modules config/optional
       // directories.
-      $provides_config_entity_type = array_reduce($this->configManager->getEntityManager()->getDefinitions(), function ($return, EntityTypeInterface $entity_type) use ($name) {
-        return $return ?: $entity_type->getProvider() && $entity_type->getConfigPrefix();
-      }, FALSE);
-      if ($provides_config_entity_type) {
-        $storage = new ExtensionInstallStorage($this->getActiveStorages(StorageInterface::DEFAULT_COLLECTION), InstallStorage::CONFIG_OPTIONAL_DIRECTORY, StorageInterface::DEFAULT_COLLECTION, FALSE);
-        $this->installOptionalConfig($storage, $name . '.');
-      }
+      $storage = new ExtensionInstallStorage($this->getActiveStorages(StorageInterface::DEFAULT_COLLECTION), InstallStorage::CONFIG_OPTIONAL_DIRECTORY, StorageInterface::DEFAULT_COLLECTION, FALSE);
+      $this->installOptionalConfig($storage, [$type => $name]);
     }
 
     // Reset all the static caches and list caches.
@@ -160,7 +156,7 @@ public function installDefaultConfig($type, $name) {
   /**
    * {@inheritdoc}
    */
-  public function installOptionalConfig(StorageInterface $storage = NULL, $prefix = '') {
+  public function installOptionalConfig(StorageInterface $storage = NULL, $dependency = []) {
     if (!$storage) {
       // Search the install profile's optional configuration too.
       $storage = new ExtensionInstallStorage($this->getActiveStorages(StorageInterface::DEFAULT_COLLECTION), InstallStorage::CONFIG_OPTIONAL_DIRECTORY, StorageInterface::DEFAULT_COLLECTION, TRUE);
@@ -180,19 +176,38 @@ public function installOptionalConfig(StorageInterface $storage = NULL, $prefix
       if (!$this->configManager->supportsConfigurationEntities($collection)) {
         continue;
       }
-      $existing_config = $this->getActiveStorages($collection)->listAll($prefix);
-      $config_to_create = $this->getConfigToCreate($storage, $collection, $prefix, $profile_storage);
-      $all_config = array_merge($existing_config, array_keys($config_to_create));
+      $existing_config = $this->getActiveStorages($collection)->listAll();
+
+      $list = array_filter($storage->listAll(), function($config_name) use ($existing_config) {
+        // Only list configuration that:
+        // - does not already exist
+        // - is a configuration entity (this also excludes config that has an
+        //   implicit dependency on modules that are not yet installed)
+        return !in_array($config_name, $existing_config) && $this->configManager->getEntityTypeIdByName($config_name);
+      });
+
+      $all_config = array_merge($existing_config, $list);
+      $config_to_create = $storage->readMultiple($list);
+      // Check to see if the corresponding override storage has any overrides.
+      if ($profile_storage) {
+        if ($profile_storage->getCollectionName() != $collection) {
+          $profile_storage = $profile_storage->createCollection($collection);
+        }
+        $config_to_create = $profile_storage->readMultiple($list) + $config_to_create;
+      }
       foreach ($config_to_create as $config_name => $data) {
-        // Exclude configuration that:
-        // - already exists
-        // - is a not configuration entity
-        // - or its dependencies cannot be met.
-        if (in_array($config_name, $existing_config) ||
-          !$this->configManager->getEntityTypeIdByName($config_name) ||
-          !$this->validateDependencies($config_name, $data, $enabled_extensions, $all_config)) {
+        // Exclude configuration where its dependencies cannot be met.
+        if (!$this->validateDependencies($config_name, $data, $enabled_extensions, $all_config)) {
           unset($config_to_create[$config_name]);
         }
+        // Exclude configuration that does not have a matching dependency.
+        elseif (!empty($dependency)) {
+          // Create a light weight dependency object to check dependencies.
+          $config_entity = new ConfigEntityDependency($config_name, $data);
+          if (!$config_entity->hasDependency(key($dependency), reset($dependency))) {
+            unset($config_to_create[$config_name]);
+          }
+        }
       }
       if (!empty($config_to_create)) {
         $this->createConfiguration($collection, $config_to_create, TRUE);
diff --git a/core/lib/Drupal/Core/Config/ConfigInstallerInterface.php b/core/lib/Drupal/Core/Config/ConfigInstallerInterface.php
index 6d8e489..3e99bce 100644
--- a/core/lib/Drupal/Core/Config/ConfigInstallerInterface.php
+++ b/core/lib/Drupal/Core/Config/ConfigInstallerInterface.php
@@ -49,11 +49,13 @@ public function installDefaultConfig($type, $name);
    *   (optional) The configuration storage to search for optional
    *   configuration. If not provided, all enabled extension's optional
    *   configuration directories will be searched.
-   * @param string $prefix
-   *   (optional) If set, limits the installed configuration to only
-   *   configuration beginning with the provided value.
+   * @param array $dependency
+   *   (optional) If set, ensures that the configuration being installed has
+   *   this dependency. The format is dependency type as the key ('module',
+   *   'theme', or 'config') and the dependency name as the value
+   *   ('book', 'bartik', 'views.view.frontpage').
    */
-  public function installOptionalConfig(StorageInterface $storage = NULL, $prefix = '');
+  public function installOptionalConfig(StorageInterface $storage = NULL, $dependency = []);
 
   /**
    * Installs all default configuration in the specified collection.
diff --git a/core/modules/config/src/Tests/ConfigInstallProfileOverrideTest.php b/core/modules/config/src/Tests/ConfigInstallProfileOverrideTest.php
index 3e2c7bf..87a52b1 100644
--- a/core/modules/config/src/Tests/ConfigInstallProfileOverrideTest.php
+++ b/core/modules/config/src/Tests/ConfigInstallProfileOverrideTest.php
@@ -106,15 +106,10 @@ function testInstallProfileConfigOverwrite() {
     // dependency does not get created.
     $this->assertNull($config_test_storage->load('override_unmet'), 'The optional config_test entity with unmet dependencies is not created.');
 
+    // Installing dblog creates the optional configuration.
     $this->container->get('module_installer')->install(['dblog']);
     $this->rebuildContainer();
-    // Just installing db_log does not create the optional configuration.
-    $this->assertNull($config_test_storage->load('override_unmet'), 'The optional config_test entity with unmet dependencies is not created.');
-    // Install all available optional configuration.
-    $this->container->get('config.installer')->installOptionalConfig();
-    $this->assertEqual($config_test_storage->load('override_unmet')->label(), 'Override', 'The optional config_test entity is overridden by the profile optional configuration.');
-
-
+    $this->assertEqual($config_test_storage->load('override_unmet')->label(), 'Override', 'The optional config_test entity is overridden by the profile optional configuration and is installed when its dependencies are met.');
   }
 
 }
diff --git a/core/modules/config/src/Tests/ConfigOtherModuleTest.php b/core/modules/config/src/Tests/ConfigOtherModuleTest.php
index ee03317..aaa90a8 100644
--- a/core/modules/config/src/Tests/ConfigOtherModuleTest.php
+++ b/core/modules/config/src/Tests/ConfigOtherModuleTest.php
@@ -61,6 +61,12 @@ public function testInstallOtherModuleFirst() {
     // not throw an error.
     $this->installModule('config_other_module_config_test');
     $this->assertTrue(\Drupal::moduleHandler()->moduleExists('config_other_module_config_test'), 'The config_other_module_config_test module is installed.');
+
+    // Ensure that optional configuration with unmet dependencies is only
+    // installed once all the dependencies are met.
+    $this->assertNull(entity_load('config_test', 'other_module_test_unmet', TRUE), 'The optional configuration whose dependencies are met is not created.');
+    $this->installModule('config_install_dependency_test');
+    $this->assertTrue(entity_load('config_test', 'other_module_test_unmet', TRUE), 'The optional configuration whose dependencies are met is now created.');
   }
 
   /**
diff --git a/core/modules/config/tests/config_other_module_config_test/config/optional/config_test.dynamic.other_module_test_unmet.yml b/core/modules/config/tests/config_other_module_config_test/config/optional/config_test.dynamic.other_module_test_unmet.yml
new file mode 100644
index 0000000..572a79f
--- /dev/null
+++ b/core/modules/config/tests/config_other_module_config_test/config/optional/config_test.dynamic.other_module_test_unmet.yml
@@ -0,0 +1,13 @@
+id: other_module_test_unmet
+label: 'Other module test to test optional config installation'
+weight: 0
+style: ''
+status: true
+langcode: en
+protected_property: Default
+dependencies:
+  module:
+    - config_install_dependency_test
+  enforced:
+    module:
+      - config_install_dependency_test