diff --git a/package_manager/package_manager.services.yml b/package_manager/package_manager.services.yml
index 0aa69ae971103b48fec30fdc48395bbdac8b270d..a5e5e7b8c6d58ada07b03c4b4f89e4820c5e9743 100644
--- a/package_manager/package_manager.services.yml
+++ b/package_manager/package_manager.services.yml
@@ -1,4 +1,7 @@
 services:
+  _defaults:
+    autowire: true
+
   # Underlying Symfony utilities for Composer Stager.
   Symfony\Component\Filesystem\Filesystem:
     public: false
@@ -8,19 +11,10 @@ services:
   # Basic infrastructure services for Composer Stager, overridden by us to
   # provide additional functionality.
   Drupal\package_manager\ProcessFactory:
-    arguments:
-      - '@file_system'
-      - '@config.factory'
     public: false
   Drupal\package_manager\ExecutableFinder:
-    arguments:
-      $configFactory: '@config.factory'
-    autowire: true
     public: false
   Drupal\package_manager\FileSyncerFactory:
-    arguments:
-      $configFactory: '@config.factory'
-    autowire: true
     public: false
   PhpTuf\ComposerStager\Infrastructure\Service\Finder\ExecutableFinderInterface:
     alias: 'Drupal\package_manager\ExecutableFinder'
@@ -32,33 +26,30 @@ services:
   # Services provided to Drupal by Package Manager.
   package_manager.beginner:
     class: PhpTuf\ComposerStager\Domain\Core\Beginner\Beginner
-    autowire: true
   package_manager.stager:
     class: PhpTuf\ComposerStager\Domain\Core\Stager\Stager
-    autowire: true
   package_manager.committer:
     class: PhpTuf\ComposerStager\Domain\Core\Committer\Committer
-    autowire: true
   package_manager.path_locator:
     class: Drupal\package_manager\PathLocator
     arguments:
-      - '%app.root%'
-      - '@config.factory'
-      - '@file_system'
+      $appRoot: '%app.root%'
+  Drupal\package_manager\PathLocator: '@package_manager.path_locator'
   package_manager.failure_marker:
     class: Drupal\package_manager\FailureMarker
-    arguments:
-      - '@package_manager.path_locator'
+  Drupal\package_manager\FailureMarker: '@package_manager.failure_marker'
   package_manager.update_data_subscriber:
     class: Drupal\package_manager\EventSubscriber\UpdateDataSubscriber
     arguments:
       - '@update.manager'
+    # @todo Autowire this service when https://drupal.org/i/3325557 lands.
+    autowire: false
     tags:
       - { name: event_subscriber }
   package_manager.composer_inspector:
     class: Drupal\package_manager\ComposerInspector
-    autowire: true
     public: false
+  Drupal\package_manager\ComposerInspector: '@package_manager.composer_inspector'
 
   # Validators.
   package_manager.validator.environment_support:
@@ -67,16 +58,10 @@ services:
       - { name: event_subscriber }
   package_manager.validator.composer:
     class: Drupal\package_manager\Validator\ComposerValidator
-    arguments:
-      - '@package_manager.composer_inspector'
-      - '@package_manager.path_locator'
-      - '@module_handler'
     tags:
       - { name: event_subscriber }
   package_manager.validator.disk_space:
     class: Drupal\package_manager\Validator\DiskSpaceValidator
-    arguments:
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.validator.pending_updates:
@@ -84,121 +69,78 @@ services:
     arguments:
       - '%app.root%'
       - '@update.post_update_registry'
+    # @todo Autowire this service when https://drupal.org/i/3325557 lands.
+    autowire: false
     tags:
       - { name: event_subscriber }
   package_manager.validator.lock_file:
     class: Drupal\package_manager\Validator\LockFileValidator
-    arguments:
-      - '@state'
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.validator.file_system:
     class: Drupal\package_manager\Validator\WritableFileSystemValidator
-    arguments:
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.validator.composer_settings:
     class: Drupal\package_manager\Validator\ComposerSettingsValidator
-    arguments:
-      - '@package_manager.composer_inspector'
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manger.validator.composer_minimum_stability:
     class: Drupal\package_manager\Validator\ComposerMinimumStabilityValidator
-    arguments:
-      - '@package_manager.path_locator'
-      - '@package_manager.composer_inspector'
     tags:
       - { name: event_subscriber }
   package_manager.validator.multisite:
     class: Drupal\package_manager\Validator\MultisiteValidator
-    arguments:
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.validator.symlink:
     class: Drupal\package_manager\Validator\SymlinkValidator
-    arguments:
-      - '@package_manager.path_locator'
-      - '@PhpTuf\ComposerStager\Domain\Service\Precondition\CodebaseContainsNoSymlinksInterface'
-      - '@PhpTuf\ComposerStager\Infrastructure\Factory\Path\PathFactoryInterface'
-      - '@module_handler'
     tags:
       - { name: event_subscriber }
   package_manager.validator.duplicate_info_file:
     class: Drupal\package_manager\Validator\DuplicateInfoFileValidator
-    arguments:
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.validator.overwrite_existing_packages:
     class: Drupal\package_manager\Validator\OverwriteExistingPackagesValidator
-    arguments:
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.validator.staged_database_updates:
     class: Drupal\package_manager\Validator\StagedDBUpdateValidator
-    arguments:
-      - '@package_manager.path_locator'
-      - '@extension.list.module'
-      - '@extension.list.theme'
     tags:
       - { name: event_subscriber }
   package_manager.test_site_excluder:
     class: Drupal\package_manager\PathExcluder\TestSiteExcluder
-    arguments:
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.vendor_hardening_excluder:
     class: Drupal\package_manager\PathExcluder\VendorHardeningExcluder
-    arguments:
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.site_files_excluder:
     class: Drupal\package_manager\PathExcluder\SiteFilesExcluder
-    arguments:
-      $path_locator: '@package_manager.path_locator'
-      $streamWrapperManager: '@stream_wrapper_manager'
     tags:
       - { name: event_subscriber }
-    autowire: true
   package_manager.sqlite_excluder:
     class: Drupal\package_manager\PathExcluder\SqliteDatabaseExcluder
-    arguments:
-      - '@package_manager.path_locator'
-      - '@database'
     tags:
       - { name: event_subscriber }
   package_manager.git_excluder:
     class: Drupal\package_manager\PathExcluder\GitExcluder
-    arguments:
-      - '@package_manager.path_locator'
-      - '@file_system'
     tags:
       - { name: event_subscriber }
   package_manager.unknown_path_excluder:
     class: Drupal\package_manager\PathExcluder\UnknownPathExcluder
-    arguments:
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.site_configuration_excluder:
     class: Drupal\package_manager\PathExcluder\SiteConfigurationExcluder
     arguments:
-      - '%site.path%'
-      - '@package_manager.path_locator'
+      $sitePath: '%site.path%'
     tags:
       - { name: event_subscriber }
   package_manager.node_modules_excluder:
     class: Drupal\package_manager\PathExcluder\NodeModulesExcluder
-    arguments:
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.uninstall_validator:
@@ -215,16 +157,10 @@ services:
       - { name: event_subscriber }
   package_manager.validator.composer_plugins:
     class: Drupal\package_manager\Validator\ComposerPluginsValidator
-    arguments:
-      - '@config.factory'
-      - '@package_manager.composer_inspector'
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.validator.patches:
     class: Drupal\package_manager\Validator\ComposerPatchesValidator
-    arguments:
-      - '@module_handler'
     tags:
       - { name: event_subscriber }
   package_manager.validator.supported_releases:
@@ -233,8 +169,6 @@ services:
       - { name: event_subscriber }
   package_manager.validator.stage_not_in_active:
     class: Drupal\package_manager\Validator\StageNotInActiveValidator
-    arguments:
-      - '@package_manager.path_locator'
     tags:
       - { name: event_subscriber }
   package_manager.validator.xdebug:
@@ -243,4 +177,8 @@ services:
       - { name: event_subscriber }
   package_manager.update_processor:
     class: Drupal\package_manager\PackageManagerUpdateProcessor
-    arguments: [ '@config.factory', '@queue', '@update.fetcher', '@state', '@private_key', '@keyvalue', '@keyvalue.expirable' ]
+    arguments:
+      # @todo Autowire $update_fetcher when https://drupal.org/i/3325557 lands.
+      $update_fetcher: '@update.fetcher'
+      $key_value_factory: '@keyvalue'
+      $key_value_expirable_factory: '@keyvalue.expirable'
diff --git a/package_manager/tests/modules/package_manager_bypass/src/PackageManagerBypassServiceProvider.php b/package_manager/tests/modules/package_manager_bypass/src/PackageManagerBypassServiceProvider.php
index d382af7017ee685e75e5225b410f2f427999f29f..f6ab530a2fd6cf680e36cb5634bd6fd18551032d 100644
--- a/package_manager/tests/modules/package_manager_bypass/src/PackageManagerBypassServiceProvider.php
+++ b/package_manager/tests/modules/package_manager_bypass/src/PackageManagerBypassServiceProvider.php
@@ -7,6 +7,7 @@ namespace Drupal\package_manager_bypass;
 use Drupal\Core\DependencyInjection\ContainerBuilder;
 use Drupal\Core\DependencyInjection\ServiceProviderBase;
 use Drupal\Core\Site\Settings;
+use Symfony\Component\DependencyInjection\Parameter;
 use Symfony\Component\DependencyInjection\Reference;
 
 /**
@@ -30,11 +31,15 @@ final class PackageManagerBypassServiceProvider extends ServiceProviderBase {
       $container->getDefinition('package_manager.stager')->setClass(NoOpStager::class)->setArguments([$state]);
     }
 
-    $definition = $container->getDefinition('package_manager.path_locator')
-      ->setClass(MockPathLocator::class);
-    $arguments = $definition->getArguments();
-    array_unshift($arguments, $state);
-    $definition->setArguments($arguments);
+    $container->getDefinition('package_manager.path_locator')
+      ->setClass(MockPathLocator::class)
+      ->setAutowired(FALSE)
+      ->setArguments([
+        $state,
+        new Parameter('app.root'),
+        new Reference('config.factory'),
+        new Reference('file_system'),
+      ]);
   }
 
 }