Merge pull request #37867 from nextcloud/techdebt/noid/require-min-composer-version-for-autoloader

chore(autoloader): Require a minimum composer version to make sure the autoloader

83 files changed, 606 insertions, 299 deletions

diff --git a/apps/admin_audit/composer/composer/ClassLoader.php b/apps/admin_audit/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/admin_audit/composer/composer/ClassLoader.php
+++ b/apps/admin_audit/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/admin_audit/composer/composer/InstalledVersions.php b/apps/admin_audit/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/admin_audit/composer/composer/InstalledVersions.php
+++ b/apps/admin_audit/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/admin_audit/composer/composer/installed.php b/apps/admin_audit/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/admin_audit/composer/composer/installed.php
+++ b/apps/admin_audit/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/cloud_federation_api/composer/composer/ClassLoader.php b/apps/cloud_federation_api/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/cloud_federation_api/composer/composer/ClassLoader.php
+++ b/apps/cloud_federation_api/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/cloud_federation_api/composer/composer/InstalledVersions.php b/apps/cloud_federation_api/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/cloud_federation_api/composer/composer/InstalledVersions.php
+++ b/apps/cloud_federation_api/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/cloud_federation_api/composer/composer/installed.php b/apps/cloud_federation_api/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/cloud_federation_api/composer/composer/installed.php
+++ b/apps/cloud_federation_api/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/comments/composer/composer/ClassLoader.php b/apps/comments/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/comments/composer/composer/ClassLoader.php
+++ b/apps/comments/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/comments/composer/composer/InstalledVersions.php b/apps/comments/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/comments/composer/composer/InstalledVersions.php
+++ b/apps/comments/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/comments/composer/composer/installed.php b/apps/comments/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/comments/composer/composer/installed.php
+++ b/apps/comments/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/contactsinteraction/composer/composer/ClassLoader.php b/apps/contactsinteraction/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/contactsinteraction/composer/composer/ClassLoader.php
+++ b/apps/contactsinteraction/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/contactsinteraction/composer/composer/InstalledVersions.php b/apps/contactsinteraction/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/contactsinteraction/composer/composer/InstalledVersions.php
+++ b/apps/contactsinteraction/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/contactsinteraction/composer/composer/installed.php b/apps/contactsinteraction/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/contactsinteraction/composer/composer/installed.php
+++ b/apps/contactsinteraction/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/dashboard/composer/composer/ClassLoader.php b/apps/dashboard/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/dashboard/composer/composer/ClassLoader.php
+++ b/apps/dashboard/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/dashboard/composer/composer/InstalledVersions.php b/apps/dashboard/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/dashboard/composer/composer/InstalledVersions.php
+++ b/apps/dashboard/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/dashboard/composer/composer/installed.php b/apps/dashboard/composer/composer/installed.php
index 04d72e5fe2d..1426826287d 100644
--- a/apps/dashboard/composer/composer/installed.php
+++ b/apps/dashboard/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => '3bfc5a4d959faebd8a76470d2832390598c7981e',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => '3bfc5a4d959faebd8a76470d2832390598c7981e',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/dav/composer/composer/ClassLoader.php b/apps/dav/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/dav/composer/composer/ClassLoader.php
+++ b/apps/dav/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/dav/composer/composer/InstalledVersions.php b/apps/dav/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/dav/composer/composer/InstalledVersions.php
+++ b/apps/dav/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/dav/composer/composer/installed.php b/apps/dav/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/dav/composer/composer/installed.php
+++ b/apps/dav/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/encryption/composer/composer/ClassLoader.php b/apps/encryption/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/encryption/composer/composer/ClassLoader.php
+++ b/apps/encryption/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/encryption/composer/composer/InstalledVersions.php b/apps/encryption/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/encryption/composer/composer/InstalledVersions.php
+++ b/apps/encryption/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/encryption/composer/composer/installed.php b/apps/encryption/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/encryption/composer/composer/installed.php
+++ b/apps/encryption/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/federatedfilesharing/composer/composer/ClassLoader.php b/apps/federatedfilesharing/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/federatedfilesharing/composer/composer/ClassLoader.php
+++ b/apps/federatedfilesharing/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/federatedfilesharing/composer/composer/InstalledVersions.php b/apps/federatedfilesharing/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/federatedfilesharing/composer/composer/InstalledVersions.php
+++ b/apps/federatedfilesharing/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/federatedfilesharing/composer/composer/installed.php b/apps/federatedfilesharing/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/federatedfilesharing/composer/composer/installed.php
+++ b/apps/federatedfilesharing/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/federation/composer/composer/ClassLoader.php b/apps/federation/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/federation/composer/composer/ClassLoader.php
+++ b/apps/federation/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/federation/composer/composer/InstalledVersions.php b/apps/federation/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/federation/composer/composer/InstalledVersions.php
+++ b/apps/federation/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/federation/composer/composer/installed.php b/apps/federation/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/federation/composer/composer/installed.php
+++ b/apps/federation/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/files/composer/composer/ClassLoader.php b/apps/files/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/files/composer/composer/ClassLoader.php
+++ b/apps/files/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/files/composer/composer/InstalledVersions.php b/apps/files/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/files/composer/composer/InstalledVersions.php
+++ b/apps/files/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/files/composer/composer/installed.php b/apps/files/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/files/composer/composer/installed.php
+++ b/apps/files/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/files_external/composer/composer/ClassLoader.php b/apps/files_external/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/files_external/composer/composer/ClassLoader.php
+++ b/apps/files_external/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/files_external/composer/composer/InstalledVersions.php b/apps/files_external/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/files_external/composer/composer/InstalledVersions.php
+++ b/apps/files_external/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/files_external/composer/composer/installed.php b/apps/files_external/composer/composer/installed.php
index 1099399ef12..1426826287d 100644
--- a/apps/files_external/composer/composer/installed.php
+++ b/apps/files_external/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd7bd7639c21fe9de94408198bc7089ebe617ff67',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd7bd7639c21fe9de94408198bc7089ebe617ff67',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/files_sharing/composer/composer/ClassLoader.php b/apps/files_sharing/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/files_sharing/composer/composer/ClassLoader.php
+++ b/apps/files_sharing/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/files_sharing/composer/composer/InstalledVersions.php b/apps/files_sharing/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/files_sharing/composer/composer/InstalledVersions.php
+++ b/apps/files_sharing/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/files_sharing/composer/composer/installed.php b/apps/files_sharing/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/files_sharing/composer/composer/installed.php
+++ b/apps/files_sharing/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/files_trashbin/composer/composer/ClassLoader.php b/apps/files_trashbin/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/files_trashbin/composer/composer/ClassLoader.php
+++ b/apps/files_trashbin/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/files_trashbin/composer/composer/InstalledVersions.php b/apps/files_trashbin/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/files_trashbin/composer/composer/InstalledVersions.php
+++ b/apps/files_trashbin/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/files_trashbin/composer/composer/installed.php b/apps/files_trashbin/composer/composer/installed.php
index 7431fd7248b..1426826287d 100644
--- a/apps/files_trashbin/composer/composer/installed.php
+++ b/apps/files_trashbin/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => '3c99b642938e7810ccd05813cda96643a8ee5da5',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => '3c99b642938e7810ccd05813cda96643a8ee5da5',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/files_versions/composer/composer/ClassLoader.php b/apps/files_versions/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/files_versions/composer/composer/ClassLoader.php
+++ b/apps/files_versions/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/files_versions/composer/composer/InstalledVersions.php b/apps/files_versions/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/files_versions/composer/composer/InstalledVersions.php
+++ b/apps/files_versions/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/files_versions/composer/composer/installed.php b/apps/files_versions/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/files_versions/composer/composer/installed.php
+++ b/apps/files_versions/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/lookup_server_connector/composer/composer/ClassLoader.php b/apps/lookup_server_connector/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/lookup_server_connector/composer/composer/ClassLoader.php
+++ b/apps/lookup_server_connector/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/lookup_server_connector/composer/composer/InstalledVersions.php b/apps/lookup_server_connector/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/lookup_server_connector/composer/composer/InstalledVersions.php
+++ b/apps/lookup_server_connector/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/lookup_server_connector/composer/composer/installed.php b/apps/lookup_server_connector/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/lookup_server_connector/composer/composer/installed.php
+++ b/apps/lookup_server_connector/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/oauth2/composer/composer/ClassLoader.php b/apps/oauth2/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/oauth2/composer/composer/ClassLoader.php
+++ b/apps/oauth2/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/oauth2/composer/composer/InstalledVersions.php b/apps/oauth2/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/oauth2/composer/composer/InstalledVersions.php
+++ b/apps/oauth2/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/oauth2/composer/composer/installed.php b/apps/oauth2/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/oauth2/composer/composer/installed.php
+++ b/apps/oauth2/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/provisioning_api/composer/composer/ClassLoader.php b/apps/provisioning_api/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/provisioning_api/composer/composer/ClassLoader.php
+++ b/apps/provisioning_api/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/provisioning_api/composer/composer/InstalledVersions.php b/apps/provisioning_api/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/provisioning_api/composer/composer/InstalledVersions.php
+++ b/apps/provisioning_api/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/provisioning_api/composer/composer/installed.php b/apps/provisioning_api/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/provisioning_api/composer/composer/installed.php
+++ b/apps/provisioning_api/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/settings/composer/composer/ClassLoader.php b/apps/settings/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/settings/composer/composer/ClassLoader.php
+++ b/apps/settings/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/settings/composer/composer/InstalledVersions.php b/apps/settings/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/settings/composer/composer/InstalledVersions.php
+++ b/apps/settings/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/settings/composer/composer/installed.php b/apps/settings/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/settings/composer/composer/installed.php
+++ b/apps/settings/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/sharebymail/composer/composer/ClassLoader.php b/apps/sharebymail/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/sharebymail/composer/composer/ClassLoader.php
+++ b/apps/sharebymail/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/sharebymail/composer/composer/InstalledVersions.php b/apps/sharebymail/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/sharebymail/composer/composer/InstalledVersions.php
+++ b/apps/sharebymail/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/sharebymail/composer/composer/installed.php b/apps/sharebymail/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/sharebymail/composer/composer/installed.php
+++ b/apps/sharebymail/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/systemtags/composer/composer/ClassLoader.php b/apps/systemtags/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/systemtags/composer/composer/ClassLoader.php
+++ b/apps/systemtags/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/systemtags/composer/composer/InstalledVersions.php b/apps/systemtags/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/systemtags/composer/composer/InstalledVersions.php
+++ b/apps/systemtags/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/systemtags/composer/composer/installed.php b/apps/systemtags/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/systemtags/composer/composer/installed.php
+++ b/apps/systemtags/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/testing/composer/composer/ClassLoader.php b/apps/testing/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/testing/composer/composer/ClassLoader.php
+++ b/apps/testing/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/testing/composer/composer/InstalledVersions.php b/apps/testing/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/testing/composer/composer/InstalledVersions.php
+++ b/apps/testing/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/testing/composer/composer/installed.php b/apps/testing/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/testing/composer/composer/installed.php
+++ b/apps/testing/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/theming/composer/composer/installed.php b/apps/theming/composer/composer/installed.php
index 641d6997e09..1426826287d 100644
--- a/apps/theming/composer/composer/installed.php
+++ b/apps/theming/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => '20912695daee931f54263e48159f9dd44ab1dad1',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => '20912695daee931f54263e48159f9dd44ab1dad1',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/twofactor_backupcodes/composer/composer/ClassLoader.php b/apps/twofactor_backupcodes/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/twofactor_backupcodes/composer/composer/ClassLoader.php
+++ b/apps/twofactor_backupcodes/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/twofactor_backupcodes/composer/composer/InstalledVersions.php b/apps/twofactor_backupcodes/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/twofactor_backupcodes/composer/composer/InstalledVersions.php
+++ b/apps/twofactor_backupcodes/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/twofactor_backupcodes/composer/composer/installed.php b/apps/twofactor_backupcodes/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/twofactor_backupcodes/composer/composer/installed.php
+++ b/apps/twofactor_backupcodes/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/updatenotification/composer/composer/ClassLoader.php b/apps/updatenotification/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/updatenotification/composer/composer/ClassLoader.php
+++ b/apps/updatenotification/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/updatenotification/composer/composer/InstalledVersions.php b/apps/updatenotification/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/updatenotification/composer/composer/InstalledVersions.php
+++ b/apps/updatenotification/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/updatenotification/composer/composer/installed.php b/apps/updatenotification/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/updatenotification/composer/composer/installed.php
+++ b/apps/updatenotification/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/user_ldap/composer/composer/ClassLoader.php b/apps/user_ldap/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/user_ldap/composer/composer/ClassLoader.php
+++ b/apps/user_ldap/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/user_ldap/composer/composer/InstalledVersions.php b/apps/user_ldap/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/user_ldap/composer/composer/InstalledVersions.php
+++ b/apps/user_ldap/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/user_ldap/composer/composer/installed.php b/apps/user_ldap/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/user_ldap/composer/composer/installed.php
+++ b/apps/user_ldap/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/user_status/composer/composer/ClassLoader.php b/apps/user_status/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/user_status/composer/composer/ClassLoader.php
+++ b/apps/user_status/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/user_status/composer/composer/InstalledVersions.php b/apps/user_status/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/user_status/composer/composer/InstalledVersions.php
+++ b/apps/user_status/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/user_status/composer/composer/installed.php b/apps/user_status/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/user_status/composer/composer/installed.php
+++ b/apps/user_status/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/weather_status/composer/composer/ClassLoader.php b/apps/weather_status/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/weather_status/composer/composer/ClassLoader.php
+++ b/apps/weather_status/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/weather_status/composer/composer/InstalledVersions.php b/apps/weather_status/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/weather_status/composer/composer/InstalledVersions.php
+++ b/apps/weather_status/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/weather_status/composer/composer/installed.php b/apps/weather_status/composer/composer/installed.php
index 04d72e5fe2d..1426826287d 100644
--- a/apps/weather_status/composer/composer/installed.php
+++ b/apps/weather_status/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => '3bfc5a4d959faebd8a76470d2832390598c7981e',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => '3bfc5a4d959faebd8a76470d2832390598c7981e',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/apps/workflowengine/composer/composer/ClassLoader.php b/apps/workflowengine/composer/composer/ClassLoader.php
index fd56bd7d840..a72151c77c8 100644
--- a/apps/workflowengine/composer/composer/ClassLoader.php
+++ b/apps/workflowengine/composer/composer/ClassLoader.php
@@ -429,7 +429,8 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            (self::$includeFile)($file);
+            $includeFile = self::$includeFile;
+            $includeFile($file);
 
             return true;
         }
@@ -560,7 +561,10 @@ class ClassLoader
         return false;
     }
 
-    private static function initializeIncludeClosure(): void
+    /**
+     * @return void
+     */
+    private static function initializeIncludeClosure()
     {
         if (self::$includeFile !== null) {
             return;
@@ -574,8 +578,8 @@ class ClassLoader
          * @param  string $file
          * @return void
          */
-        self::$includeFile = static function($file) {
+        self::$includeFile = \Closure::bind(static function($file) {
             include $file;
-        };
+        }, null, null);
     }
 }
diff --git a/apps/workflowengine/composer/composer/InstalledVersions.php b/apps/workflowengine/composer/composer/InstalledVersions.php
index c6b54af7ba2..51e734a774b 100644
--- a/apps/workflowengine/composer/composer/InstalledVersions.php
+++ b/apps/workflowengine/composer/composer/InstalledVersions.php
@@ -98,7 +98,7 @@ class InstalledVersions
     {
         foreach (self::getInstalled() as $installed) {
             if (isset($installed['versions'][$packageName])) {
-                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+                return $includeDevRequirements || !isset($installed['versions'][$packageName]['dev_requirement']) || $installed['versions'][$packageName]['dev_requirement'] === false;
             }
         }
 
@@ -119,7 +119,7 @@ class InstalledVersions
      */
     public static function satisfies(VersionParser $parser, $packageName, $constraint)
     {
-        $constraint = $parser->parseConstraints($constraint);
+        $constraint = $parser->parseConstraints((string) $constraint);
         $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
 
         return $provided->matches($constraint);
@@ -328,7 +328,9 @@ class InstalledVersions
                 if (isset(self::$installedByVendor[$vendorDir])) {
                     $installed[] = self::$installedByVendor[$vendorDir];
                 } elseif (is_file($vendorDir.'/composer/installed.php')) {
-                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                    $required = require $vendorDir.'/composer/installed.php';
+                    $installed[] = self::$installedByVendor[$vendorDir] = $required;
                     if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                         self::$installed = $installed[count($installed) - 1];
                     }
@@ -340,12 +342,17 @@ class InstalledVersions
             // only require the installed.php file if this file is loaded from its dumped location,
             // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
             if (substr(__DIR__, -8, 1) !== 'C') {
-                self::$installed = require __DIR__ . '/installed.php';
+                /** @var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $required */
+                $required = require __DIR__ . '/installed.php';
+                self::$installed = $required;
             } else {
                 self::$installed = array();
             }
         }
-        $installed[] = self::$installed;
+
+        if (self::$installed !== array()) {
+            $installed[] = self::$installed;
+        }
 
         return $installed;
     }
diff --git a/apps/workflowengine/composer/composer/installed.php b/apps/workflowengine/composer/composer/installed.php
index a1f6a8636b4..1426826287d 100644
--- a/apps/workflowengine/composer/composer/installed.php
+++ b/apps/workflowengine/composer/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => '__root__',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+        'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         '__root__' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => 'd51429a47232bbf46a2be832ecfa711f102da802',
+            'reference' => 'dd3d689e04a5e1d558da937ca72980e0e2c7c404',
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
diff --git a/build/autoloaderchecker.sh b/build/autoloaderchecker.sh
index 19ae6a71731..da3a7ef2546 100755
--- a/build/autoloaderchecker.sh
+++ b/build/autoloaderchecker.sh
@@ -14,6 +14,16 @@ else
 fi
 
 
+COMPOSER_VERSION=$($COMPOSER_COMMAND --version | cut -d" " -f3)
+COMPOSER_MAJOR_VERSION=$(echo "$COMPOSER_VERSION" | cut -d"." -f1)
+COMPOSER_MINOR_VERSION=$(echo "$COMPOSER_VERSION" | cut -d"." -f2)
+COMPOSER_PATCH_VERSION=$(echo "$COMPOSER_VERSION" | cut -d"." -f3)
+
+if ! [ "$COMPOSER_MAJOR_VERSION" -gt 2 -o \( "$COMPOSER_MAJOR_VERSION" -eq 2 -a "$COMPOSER_MINOR_VERSION" -ge 6 \) -o \( "$COMPOSER_MAJOR_VERSION" -eq 2 -a "$COMPOSER_MINOR_VERSION" -eq 5 -a "$COMPOSER_PATCH_VERSION" -ge 5 \) ]; then
+	echo "composer version >= 2.5.5 required. Version found: $COMPOSER_VERSION" >&2
+	exit 1
+fi
+
 REPODIR=`git rev-parse --show-toplevel`
 
 #Redump the main autoloader