diff --git a/apps/files/lib/AppInfo/Application.php b/apps/files/lib/AppInfo/Application.php
index 025e6c42f2805..9fcad2e972878 100644
--- a/apps/files/lib/AppInfo/Application.php
+++ b/apps/files/lib/AppInfo/Application.php
@@ -64,6 +64,7 @@
 use OCP\Share\IManager as IShareManager;
 use OCP\Util;
 use Psr\Container\ContainerInterface;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 
 class Application extends App implements IBootstrap {
 	public const APP_ID = 'files';
@@ -121,12 +122,16 @@ public function register(IRegistrationContext $context): void {
 		$context->registerNotifierService(Notifier::class);
 	}
 
-	public function boot(IBootContext $context): void {
-		$context->injectFn(Closure::fromCallable([$this, 'registerCollaboration']));
-		$context->injectFn([Listener::class, 'register']);
-		$context->injectFn(Closure::fromCallable([$this, 'registerSearchProvider']));
+	public function boot(IBootContext $context,
+						 IProviderManager $providerManager,
+						 EventDispatcherInterface $dispatcher,
+						 ISearch $search,
+						 IL10N $l10n): void {
+		$this->registerCollaboration($providerManager);
+		Listener::register($dispatcher);
+		$this->registerSearchProvider($search);
 		$this->registerTemplates();
-		$context->injectFn(Closure::fromCallable([$this, 'registerNavigation']));
+		$this->registerNavigation($l10n);
 		$this->registerHooks();
 	}
 
diff --git a/lib/private/AppFramework/Bootstrap/Coordinator.php b/lib/private/AppFramework/Bootstrap/Coordinator.php
index 06a17e5242b57..cd259289af363 100644
--- a/lib/private/AppFramework/Bootstrap/Coordinator.php
+++ b/lib/private/AppFramework/Bootstrap/Coordinator.php
@@ -32,6 +32,7 @@
 use OC\Support\CrashReport\Registry;
 use OC_App;
 use OCP\AppFramework\App;
+use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
 use OCP\AppFramework\QueryException;
 use OCP\Dashboard\IManager;
@@ -173,7 +174,10 @@ public function bootApp(string $appId): void {
 			if ($application instanceof IBootstrap) {
 				/** @var BootContext $context */
 				$context = new BootContext($application->getContainer());
-				$application->boot($context);
+				$injector = new FunctionInjector($application->getContainer(), [
+					IBootContext::class => $context,
+				]);
+				$injector->injectFn([$application, 'boot']);
 			}
 		} catch (QueryException $e) {
 			$this->logger->logException($e, [
diff --git a/lib/private/AppFramework/Bootstrap/FunctionInjector.php b/lib/private/AppFramework/Bootstrap/FunctionInjector.php
index 3c20701618bc1..333d0a562d4aa 100644
--- a/lib/private/AppFramework/Bootstrap/FunctionInjector.php
+++ b/lib/private/AppFramework/Bootstrap/FunctionInjector.php
@@ -38,8 +38,15 @@ class FunctionInjector {
 	/** @var ContainerInterface */
 	private $container;
 
-	public function __construct(ContainerInterface $container) {
+	/**
+	 * @var object[]
+	 * @psalm-var array<class-string, object>
+	 */
+	private $overrides;
+
+	public function __construct(ContainerInterface $container, array $overrides = []) {
 		$this->container = $container;
+		$this->overrides = $overrides;
 	}
 
 	public function injectFn(callable $fn) {
@@ -47,6 +54,10 @@ public function injectFn(callable $fn) {
 		return $fn(...array_map(function (ReflectionParameter $param) {
 			// First we try by type (more likely these days)
 			if (($type = $param->getType()) !== null) {
+				if (isset($this->overrides[$type->getName()])) {
+					return $this->overrides[$type->getName()];
+				}
+
 				try {
 					return $this->container->get($type->getName());
 				} catch (QueryException $ex) {
diff --git a/lib/public/AppFramework/Bootstrap/IBootstrap.php b/lib/public/AppFramework/Bootstrap/IBootstrap.php
index 1c509876bfe86..acfa264896b42 100644
--- a/lib/public/AppFramework/Bootstrap/IBootstrap.php
+++ b/lib/public/AppFramework/Bootstrap/IBootstrap.php
@@ -28,6 +28,7 @@
 
 /**
  * @since 20.0.0
+ * @method void boot(IBootContext $context, ...$params) Boot the application
  */
 interface IBootstrap {
 
@@ -37,18 +38,4 @@ interface IBootstrap {
 	 * @since 20.0.0
 	 */
 	public function register(IRegistrationContext $context): void;
-
-	/**
-	 * Boot the application
-	 *
-	 * At this stage you can assume that all services are registered and the DI
-	 * container(s) are ready to be queried.
-	 *
-	 * This is also the state where an optional `appinfo/app.php` was loaded.
-	 *
-	 * @param IBootContext $context
-	 *
-	 * @since 20.0.0
-	 */
-	public function boot(IBootContext $context): void;
 }
diff --git a/tests/lib/AppFramework/Bootstrap/FunctionInjectorTest.php b/tests/lib/AppFramework/Bootstrap/FunctionInjectorTest.php
index cd2332b058862..bcc0f1ba92be8 100644
--- a/tests/lib/AppFramework/Bootstrap/FunctionInjectorTest.php
+++ b/tests/lib/AppFramework/Bootstrap/FunctionInjectorTest.php
@@ -81,4 +81,17 @@ public function testInjectFnByName(): void {
 		// Nothing to assert. No errors means everything is fine.
 		$this->addToAssertionCount(1);
 	}
+
+	public function testInjectWithOverride(): void {
+		$obj = new class() implements Foo {};
+
+		$injector = new FunctionInjector($this->container, [
+			Foo::class => $obj,
+		]);
+		$injector->injectFn(static function (Foo $f): void {
+		});
+
+		// Nothing to assert. No errors means everything is fine.
+		$this->addToAssertionCount(1);
+	}
 }