Don't try to update package.json on composer install

Author: nicolas-grekas

src/Event/UpdateEvent.php

@@ -12,13 +12,15 @@
 namespace Symfony\Flex\Event;
 
 use Composer\Script\Event;
+use Composer\Script\ScriptEvents;
 
 class UpdateEvent extends Event
 {
     private $force;
 
     public function __construct(bool $force)
     {
+        $this->name = ScriptEvents::POST_UPDATE_CMD;
         $this->force = $force;
     }
 

src/Flex.php

@@ -483,7 +483,9 @@ public function install(Event $event = null)
         $this->io->writeError('');
 
         if (!$recipes) {
-            $this->synchronizePackageJson($rootDir);
+            if (ScriptEvents::POST_UPDATE_CMD === $event->getName()) {
+                $this->synchronizePackageJson($rootDir);
+            }
             $this->lock->write();
 
             if ($this->downloader->isEnabled()) {