From 5e12da0203929a40a506193c60cd149df93f7610 Mon Sep 17 00:00:00 2001
From: Benjamin Eberlei <kontakt@beberlei.de>
Date: Mon, 19 Nov 2012 11:24:11 +0100
Subject: [PATCH] Skip locking dev package to time when proc_open does not
 exist on system.

---
 src/Composer/Package/Locker.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Composer/Package/Locker.php b/src/Composer/Package/Locker.php
index bd636c8f1..cf38eb670 100644
--- a/src/Composer/Package/Locker.php
+++ b/src/Composer/Package/Locker.php
@@ -288,7 +288,7 @@ class Locker
             unset($spec['version_normalized']);
 
             if ($package->isDev()) {
-                if ('git' === $package->getSourceType() && $path = $this->installationManager->getInstallPath($package)) {
+                if ('git' === $package->getSourceType() && $path = $this->installationManager->getInstallPath($package) && function_exists('proc_open')) {
                     $sourceRef = $package->getSourceReference() ?: $package->getDistReference();
                     $process = new ProcessExecutor();
                     if (0 === $process->execute('git log -n1 --pretty=%ct '.escapeshellarg($sourceRef), $output, $path)) {