From 09f774c705ae15b3daaeb21f41b37ec97b9bf918 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Haso=C5=88?= <martin.hason@gmail.com>
Date: Sat, 2 Jun 2012 08:54:42 +0200
Subject: [PATCH] Added test if proc_open function is enabled in
 RootPackageLoader

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

diff --git a/src/Composer/Package/Loader/RootPackageLoader.php b/src/Composer/Package/Loader/RootPackageLoader.php
index b82a19bae..710cef6fa 100644
--- a/src/Composer/Package/Loader/RootPackageLoader.php
+++ b/src/Composer/Package/Loader/RootPackageLoader.php
@@ -157,7 +157,7 @@ class RootPackageLoader extends ArrayLoader
     private function guessVersion(array $config)
     {
         // try to fetch current version from git branch
-        if (0 === $this->process->execute('git branch --no-color --no-abbrev -v', $output)) {
+        if (function_exists('proc_open') && 0 === $this->process->execute('git branch --no-color --no-abbrev -v', $output)) {
             $branches = array();
             $isFeatureBranch = true;
             $version = null;