From a63f8d511e69b4b7a7da441f95640e0970d5ec51 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Thu, 25 Feb 2016 15:36:31 +0000
Subject: [PATCH] Avoid chmod on windows

---
 src/Composer/Downloader/ZipDownloader.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Composer/Downloader/ZipDownloader.php b/src/Composer/Downloader/ZipDownloader.php
index a08675313..aaa45200b 100644
--- a/src/Composer/Downloader/ZipDownloader.php
+++ b/src/Composer/Downloader/ZipDownloader.php
@@ -59,7 +59,11 @@ class ZipDownloader extends ArchiveDownloader
         $processError = null;
 
         if (self::$hasSystemUnzip) {
-            $command = 'unzip '.ProcessExecutor::escape($file).' -d '.ProcessExecutor::escape($path) . ' && chmod -R u+w ' . ProcessExecutor::escape($path);
+            $command = 'unzip '.ProcessExecutor::escape($file).' -d '.ProcessExecutor::escape($path);
+            if (!Platform::isWindows()) {
+                $command .= ' && chmod -R u+w ' . ProcessExecutor::escape($path);
+            }
+
             try {
                 if (0 === $this->process->execute($command, $ignoredOutput)) {
                     return;