diff --git a/core/modules/outside_in/outside_in.install b/core/modules/outside_in/outside_in.install
new file mode 100644
index 0000000..4c59d20
--- /dev/null
+++ b/core/modules/outside_in/outside_in.install
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * @file
+ * Install, update and uninstall functions for the Outside-In module.
+ */
+
+use Drupal\Core\Cache\Cache;
+
+/**
+ * Implements hook_install().
+ */
+function outside_in_install() {
+  // Flush all persistent caches.
+  \Drupal::moduleHandler()->invokeAll('cache_flush');
+  foreach (Cache::getBins() as $service_id => $cache_backend) {
+    $cache_backend->deleteAll();
+  }
+
+  // Add the "use outside-in" permission to all those with "administer block".
+  $roles = \Drupal::entityTypeManager()->getStorage('user_role')->loadMultiple();
+  /** @var \Drupal\user\RoleInterface[] $roles */
+  foreach ($roles as $role) {
+    if ($role->hasPermission('administer block')) {
+      $role->grantPermission('use outside-in');
+      $role->trustData()->save();
+    }
+  }
+}
diff --git a/core/modules/outside_in/outside_in.permissions.yml b/core/modules/outside_in/outside_in.permissions.yml
new file mode 100644
index 0000000..5077893
--- /dev/null
+++ b/core/modules/outside_in/outside_in.permissions.yml
@@ -0,0 +1 @@
+use outside-in: 'Use Outside-In'