Update to Drupal 8.0.6. For more information, see https://www.drupal.org/drupal-8.0.6-release-notes

vendor/wikimedia/composer-merge-plugin/.arcconfig

@@ -1,6 +0,0 @@
-{
-    "phabricator.uri" : "https://phabricator.wikimedia.org/",
-    "repository.callsign" : "GCMP",
-    "history.immutable" : false,
-    "unit.engine": "PhpunitTestEngine"
-}

vendor/wikimedia/composer-merge-plugin/.arclint

@@ -1,13 +0,0 @@
-{
-    "exclude": "(^vendor/)",
-    "linters": {
-        "php": {
-            "type": "php",
-            "include": "(\\.php$)"
-        },
-        "json": {
-            "type": "json",
-            "include": "(\\.json$)"
-        }
-    }
-}

vendor/wikimedia/composer-merge-plugin/src/Merge/ExtraPackage.php

@@ -120,6 +120,7 @@ class ExtraPackage
     }
 
     /**
+     * @param string $json
      * @return CompletePackage
      */
     protected function loadPackage($json)
@@ -350,12 +351,14 @@ class ExtraPackage
         $links = $this->package->{$getter}();
         if (!empty($links)) {
             $unwrapped = self::unwrapIfNeeded($root, $setter);
+            // @codeCoverageIgnoreStart
             if ($root !== $unwrapped) {
                 $this->logger->warning(
                     'This Composer version does not support ' .
                     "'{$type}' merging for aliased packages."
                 );
             }
+            // @codeCoverageIgnoreEnd
             $unwrapped->{$setter}(array_merge(
                 $root->{$getter}(),
                 $this->replaceSelfVersionDependencies($type, $links, $root)
@@ -437,9 +440,24 @@ class ExtraPackage
         $prettyVersion = $root->getPrettyVersion();
         $vp = new VersionParser();
 
+        $method = 'get' . ucfirst($linkType['method']);
+        $packages = $root->$method();
+
         return array_map(
-            function ($link) use ($linkType, $version, $prettyVersion, $vp) {
+            function ($link) use ($linkType, $version, $prettyVersion, $vp, $packages) {
                 if ('self.version' === $link->getPrettyConstraint()) {
+                    if (isset($packages[$link->getSource()])) {
+                        /** @var Link $package */
+                        $package = $packages[$link->getSource()];
+                        return new Link(
+                            $link->getSource(),
+                            $link->getTarget(),
+                            $vp->parseConstraints($package->getConstraint()->getPrettyString()),
+                            $linkType['description'],
+                            $package->getPrettyConstraint()
+                        );
+                    }
+
                     return new Link(
                         $link->getSource(),
                         $link->getTarget(),
@@ -475,12 +493,14 @@ class ExtraPackage
         RootPackageInterface $root,
         $method = 'setExtra'
     ) {
+        // @codeCoverageIgnoreStart
         if ($root instanceof RootAliasPackage &&
             !method_exists($root, $method)
         ) {
             // Unwrap and return the aliased RootPackage.
             $root = $root->getAliasOf();
         }
+        // @codeCoverageIgnoreEnd
         return $root;
     }
 }