Make sure the anti-aliased package contains the alias info from the correct alias

src/Composer/Installer/InstallationManager.php

@@ -127,11 +127,7 @@ class InstallationManager
      */
     public function install(RepositoryInterface $repo, InstallOperation $operation)
     {
-        $package = $operation->getPackage();
-        if ($package instanceof AliasPackage) {
-            $package = $package->getAliasOf();
-            $package->setInstalledAsAlias(true);
-        }
+        $package = $this->antiAlias($operation->getPackage());
         $installer = $this->getInstaller($package->getType());
         $installer->install($repo, $package);
         $this->notifyInstall($package);
@@ -145,15 +141,8 @@ class InstallationManager
      */
     public function update(RepositoryInterface $repo, UpdateOperation $operation)
     {
-        $initial = $operation->getInitialPackage();
-        if ($initial instanceof AliasPackage) {
-            $initial = $initial->getAliasOf();
-        }
-        $target = $operation->getTargetPackage();
-        if ($target instanceof AliasPackage) {
-            $target = $target->getAliasOf();
-            $target->setInstalledAsAlias(true);
-        }
+        $initial = $this->antiAlias($operation->getInitialPackage());
+        $target = $this->antiAlias($operation->getTargetPackage());
 
         $initialType = $initial->getType();
         $targetType  = $target->getType();
@@ -176,10 +165,7 @@ class InstallationManager
      */
     public function uninstall(RepositoryInterface $repo, UninstallOperation $operation)
     {
-        $package = $operation->getPackage();
-        if ($package instanceof AliasPackage) {
-            $package = $package->getAliasOf();
-        }
+        $package = $this->antiAlias($operation->getPackage());
         $installer = $this->getInstaller($package->getType());
         $installer->uninstall($repo, $package);
     }
@@ -217,4 +203,17 @@ class InstallationManager
             $package->getRepository()->notifyInstall($package);
         }
     }
+
+    private function antiAlias(PackageInterface $package)
+    {
+        if ($package instanceof AliasPackage) {
+            $alias = $package;
+            $package = $package->getAliasOf();
+            $package->setInstalledAsAlias(true);
+            $package->setAlias($alias->getVersion());
+            $package->setPrettyAlias($alias->getPrettyVersion());
+        }
+
+        return $package;
+    }
 }