diff --git a/src/Composer/Compiler.php b/src/Composer/Compiler.php
index ebce05559..a4c1e5986 100644
--- a/src/Composer/Compiler.php
+++ b/src/Composer/Compiler.php
@@ -13,7 +13,7 @@
 namespace Composer;
 
 use Symfony\Component\Finder\Finder;
-use Symfony\Component\Process\Process;
+use Composer\Util\Process;
 
 /**
  * The Compiler class compiles composer into a phar
diff --git a/src/Composer/Downloader/GitDownloader.php b/src/Composer/Downloader/GitDownloader.php
index 161dfa5ce..ebb546a96 100644
--- a/src/Composer/Downloader/GitDownloader.php
+++ b/src/Composer/Downloader/GitDownloader.php
@@ -13,7 +13,7 @@
 namespace Composer\Downloader;
 
 use Composer\Package\PackageInterface;
-use Composer\Downloader\Util\Filesystem;
+use Composer\Util\Process;
 
 /**
  * @author Jordi Boggiano <j.boggiano@seld.be>
@@ -39,7 +39,7 @@ class GitDownloader implements DownloaderInterface
 
         $url = escapeshellarg($package->getSourceUrl());
         $ref = escapeshellarg($package->getSourceReference());
-        Filesystem::runProcess(sprintf('git clone %s %s && cd %2$s && git checkout %3$s && git reset --hard %3$s', $url, $path, $ref));
+        Process::execute(sprintf('git clone %s %s && cd %2$s && git checkout %3$s && git reset --hard %3$s', $url, $path, $ref));
     }
 
     /**
@@ -52,7 +52,7 @@ class GitDownloader implements DownloaderInterface
         }
 
         $this->enforceCleanDirectory($path);
-        Filesystem::runProcess(sprintf('cd %s && git fetch && git checkout %2$s && git reset --hard %2$s', $path, $target->getSourceReference()));
+        Process::execute(sprintf('cd %s && git fetch && git checkout %2$s && git reset --hard %2$s', $path, $target->getSourceReference()));
     }
 
     /**
@@ -67,7 +67,7 @@ class GitDownloader implements DownloaderInterface
 
     private function enforceCleanDirectory($path)
     {
-        Filesystem::runProcess(sprintf('cd %s && git status --porcelain', $path),$output);
+        Process::execute(sprintf('cd %s && git status --porcelain', $path),$output);
         if (implode('', $output)) {
             throw new \RuntimeException('Source directory has uncommitted changes');
         }
diff --git a/src/Composer/Downloader/HgDownloader.php b/src/Composer/Downloader/HgDownloader.php
index 80a60dc8d..b7d7fbbe0 100644
--- a/src/Composer/Downloader/HgDownloader.php
+++ b/src/Composer/Downloader/HgDownloader.php
@@ -13,7 +13,7 @@
 namespace Composer\Downloader;
 
 use Composer\Package\PackageInterface;
-use Composer\Downloader\Util\Filesystem;
+use Composer\Util\Process;
 
 /**
  * @author Per Bernhardt <plb@webfactory.de>
@@ -39,7 +39,7 @@ class HgDownloader implements DownloaderInterface
 
         $url = escapeshellarg($package->getSourceUrl());
         $ref = escapeshellarg($package->getSourceReference());
-        Filesystem::runProcess(sprintf('(hg clone %s %s  2> /dev/null) && cd %2$s && hg up %s', $url, $path, $ref));
+        Process::execute(sprintf('(hg clone %s %s  2> /dev/null) && cd %2$s && hg up %s', $url, $path, $ref));
     }
 
     /**
@@ -52,7 +52,7 @@ class HgDownloader implements DownloaderInterface
         }
 
         $this->enforceCleanDirectory($path);
-        Filesystem::runProcess(sprintf('cd %s && hg pull && hg up %s', $path, escapeshellarg($target->getSourceReference())));
+        Process::execute(sprintf('cd %s && hg pull && hg up %s', $path, escapeshellarg($target->getSourceReference())));
     }
 
     /**
@@ -67,7 +67,7 @@ class HgDownloader implements DownloaderInterface
 
     private function enforceCleanDirectory($path)
     {
-        Filesystem::runProcess(sprintf('cd %s && hg st', $path), $output);
+        Process::execute(sprintf('cd %s && hg st', $path), $output);
         if (implode('', $output)) {
             throw new \RuntimeException('Source directory has uncommitted changes');
         }
diff --git a/src/Composer/Downloader/SvnDownloader.php b/src/Composer/Downloader/SvnDownloader.php
index 226a125c1..d6577a0b1 100644
--- a/src/Composer/Downloader/SvnDownloader.php
+++ b/src/Composer/Downloader/SvnDownloader.php
@@ -3,7 +3,7 @@
 namespace Composer\Downloader;
 
 use Composer\Package\PackageInterface;
-use Composer\Downloader\Util\Filesystem;
+use Composer\Util\Process;
 
 /**
  * @author Ben Bieker <mail@ben-bieker.de>
@@ -29,7 +29,7 @@ class SvnDownloader implements DownloaderInterface
 
         $url = escapeshellarg($package->getSourceUrl());
         $ref = escapeshellarg($package->getSourceReference());
-        Filesystem::runProcess(sprintf('svn co %s/%s %s', $url, $ref, $path));
+        Process::execute(sprintf('svn co %s/%s %s', $url, $ref, $path));
     }
 
     /**
@@ -43,7 +43,7 @@ class SvnDownloader implements DownloaderInterface
 
         $url = escapeshellarg($target->getSourceUrl());
         $ref = escapeshellarg($target->getSourceReference());
-        Filesystem::runProcess(sprintf('cd %s && svn switch %s/%s', $path, $url, $ref));
+        Process::execute(sprintf('cd %s && svn switch %s/%s', $path, $url, $ref));
     }
 
     /**
diff --git a/src/Composer/Downloader/Util/Filesystem.php b/src/Composer/Downloader/Util/Filesystem.php
index 4c8d80d80..6e73faa63 100644
--- a/src/Composer/Downloader/Util/Filesystem.php
+++ b/src/Composer/Downloader/Util/Filesystem.php
@@ -12,7 +12,7 @@
 
 namespace Composer\Downloader\Util;
 
-use Symfony\Component\Process\Process;
+use Composer\Util\Process;
 
 /**
  * @author Jordi Boggiano <j.boggiano@seld.be>
@@ -22,9 +22,9 @@ class Filesystem
     public function removeDirectory($directory)
     {
         if (defined('PHP_WINDOWS_VERSION_BUILD')) {
-            static::runProcess(sprintf('rmdir /S /Q %s', escapeshellarg(realpath($directory))));
+            Process::execute(sprintf('rmdir /S /Q %s', escapeshellarg(realpath($directory))));
         } else {
-            static::runProcess(sprintf('rm -rf %s', escapeshellarg($directory)));
+            Process::execute(sprintf('rm -rf %s', escapeshellarg($directory)));
         }
     }
 
@@ -127,30 +127,4 @@ class Filesystem
     {
         return substr($path, 0, 1) === '/' || substr($path, 1, 1) === ':';
     }
-
-    /**
-     * runs a process on the commandline
-     *
-     * @static
-     * @param $command the command to execute
-     * @param null $output the output will be written into this var if passed
-     * @return int statuscode
-     */
-    public static function runProcess($command, &$output = null)
-    {
-        $process = new Process($command);
-        $process->run(function($type, $buffer) use ($output) {
-            if (null === $output) {
-               return;
-            }
-
-            echo $buffer;
-        });
-
-        if (null !== $output) {
-           $output = $process->getOutput();
-        }
-
-        return $process->getExitCode();
-    }
-}
+}
\ No newline at end of file
diff --git a/src/Composer/Downloader/ZipDownloader.php b/src/Composer/Downloader/ZipDownloader.php
index ca19366b8..d89417c4f 100644
--- a/src/Composer/Downloader/ZipDownloader.php
+++ b/src/Composer/Downloader/ZipDownloader.php
@@ -13,7 +13,7 @@
 namespace Composer\Downloader;
 
 use Composer\Package\PackageInterface;
-use Symfony\Component\Process\Process;
+use Composer\Util\Process;
 
 /**
  * @author Jordi Boggiano <j.boggiano@seld.be>
diff --git a/src/Composer/Repository/Vcs/GitDriver.php b/src/Composer/Repository/Vcs/GitDriver.php
index 5af9016e5..1db051313 100644
--- a/src/Composer/Repository/Vcs/GitDriver.php
+++ b/src/Composer/Repository/Vcs/GitDriver.php
@@ -3,7 +3,7 @@
 namespace Composer\Repository\Vcs;
 
 use Composer\Json\JsonFile;
-use Composer\Downloader\Util\Filesystem;
+use Composer\Util\Process;
 
 /**
  * @author Jordi Boggiano <j.boggiano@seld.be>
@@ -30,9 +30,9 @@ class GitDriver implements VcsDriverInterface
         $url = escapeshellarg($this->url);
         $tmpDir = escapeshellarg($this->tmpDir);
         if (is_dir($this->tmpDir)) {
-            Filesystem::runProcess(sprintf('cd %s && git fetch origin', $tmpDir), $output);
+            Process::execute(sprintf('cd %s && git fetch origin', $tmpDir), $output);
         } else {
-            Filesystem::runProcess(sprintf('git clone %s %s', $url, $tmpDir), $output);
+            Process::execute(sprintf('git clone %s %s', $url, $tmpDir), $output);
         }
 
         $this->getTags();
@@ -46,7 +46,7 @@ class GitDriver implements VcsDriverInterface
     {
         if (null === $this->rootIdentifier) {
             $this->rootIdentifier = 'master';
-            Filesystem::runProcess(sprintf('cd %s && git branch --no-color -r', escapeshellarg($this->tmpDir)), $output);
+            Process::execute(sprintf('cd %s && git branch --no-color -r', escapeshellarg($this->tmpDir)), $output);
             foreach ($output as $branch) {
                 if ($branch && preg_match('{/HEAD +-> +[^/]+/(\S+)}', $branch, $match)) {
                     $this->rootIdentifier = $match[1];
@@ -90,7 +90,7 @@ class GitDriver implements VcsDriverInterface
     public function getComposerInformation($identifier)
     {
         if (!isset($this->infoCache[$identifier])) {
-            Filesystem::runProcess(sprintf('cd %s && git show %s:composer.json', escapeshellarg($this->tmpDir), escapeshellarg($identifier)), $output);
+            Process::execute(sprintf('cd %s && git show %s:composer.json', escapeshellarg($this->tmpDir), escapeshellarg($identifier)), $output);
             $composer = implode("\n", $output);
             unset($output);
 
@@ -101,7 +101,7 @@ class GitDriver implements VcsDriverInterface
             $composer = JsonFile::parseJson($composer);
 
             if (!isset($composer['time'])) {
-                Filesystem::runProcess(sprintf('cd %s && git log -1 --format=%%at %s', escapeshellarg($this->tmpDir), escapeshellarg($identifier)), $output);
+                Process::execute(sprintf('cd %s && git log -1 --format=%%at %s', escapeshellarg($this->tmpDir), escapeshellarg($identifier)), $output);
                 $date = new \DateTime('@'.$output[0]);
                 $composer['time'] = $date->format('Y-m-d H:i:s');
             }
@@ -117,7 +117,7 @@ class GitDriver implements VcsDriverInterface
     public function getTags()
     {
         if (null === $this->tags) {
-            Filesystem::runProcess(sprintf('cd %s && git tag', escapeshellarg($this->tmpDir)), $output);
+            Process::execute(sprintf('cd %s && git tag', escapeshellarg($this->tmpDir)), $output);
             $this->tags = $output ? array_combine($output, $output) : array();
         }
 
@@ -132,7 +132,7 @@ class GitDriver implements VcsDriverInterface
         if (null === $this->branches) {
             $branches = array();
 
-            Filesystem::runProcess(sprintf('cd %s && git branch --no-color -rv', escapeshellarg($this->tmpDir)), $output);
+            Process::execute(sprintf('cd %s && git branch --no-color -rv', escapeshellarg($this->tmpDir)), $output);
             foreach ($output as $branch) {
                 if ($branch && !preg_match('{^ *[^/]+/HEAD }', $branch)) {
                     preg_match('{^ *[^/]+/(\S+) *([a-f0-9]+) .*$}', $branch, $match);
diff --git a/src/Composer/Repository/Vcs/HgDriver.php b/src/Composer/Repository/Vcs/HgDriver.php
index 50f2b2081..b62dfb530 100644
--- a/src/Composer/Repository/Vcs/HgDriver.php
+++ b/src/Composer/Repository/Vcs/HgDriver.php
@@ -13,7 +13,7 @@
 namespace Composer\Repository\Vcs;
 
 use Composer\Json\JsonFile;
-use Composer\Downloader\Util\Filesystem;
+use Composer\Util\Process;
 
 /**
  * @author Per Bernhardt <plb@webfactory.de>
@@ -40,9 +40,9 @@ class HgDriver implements VcsDriverInterface
         $url = escapeshellarg($this->url);
         $tmpDir = escapeshellarg($this->tmpDir);
         if (is_dir($this->tmpDir)) {
-            Filesystem::runProcess(sprintf('cd %s && hg pull -u', $tmpDir), $output);
+            Process::execute(sprintf('cd %s && hg pull -u', $tmpDir), $output);
         } else {
-            Filesystem::runProcess(sprintf('cd %s && hg clone %s %s', escapeshellarg(sys_get_temp_dir()), $url, $tmpDir), $output);
+            Process::execute(sprintf('cd %s && hg clone %s %s', escapeshellarg(sys_get_temp_dir()), $url, $tmpDir), $output);
         }
 
         $this->getTags();
@@ -56,7 +56,7 @@ class HgDriver implements VcsDriverInterface
     {
         $tmpDir = escapeshellarg($this->tmpDir);
         if (null === $this->rootIdentifier) {
-            Filesystem::runProcess(sprintf('cd %s && hg tip --template "{node}"', $tmpDir), $output);
+            Process::execute(sprintf('cd %s && hg tip --template "{node}"', $tmpDir), $output);
             $this->rootIdentifier = $output[0];
         }
         
@@ -95,7 +95,7 @@ class HgDriver implements VcsDriverInterface
     public function getComposerInformation($identifier)
     {
         if (!isset($this->infoCache[$identifier])) {
-            Filesystem::runProcess(sprintf('cd %s && hg cat -r %s composer.json', escapeshellarg($this->tmpDir), escapeshellarg($identifier)), $output);
+            Process::execute(sprintf('cd %s && hg cat -r %s composer.json', escapeshellarg($this->tmpDir), escapeshellarg($identifier)), $output);
             $composer = implode("\n", $output);
             unset($output);
 
@@ -106,7 +106,7 @@ class HgDriver implements VcsDriverInterface
             $composer = JsonFile::parseJson($composer);
 
             if (!isset($composer['time'])) {
-                Filesystem::runProcess(sprintf('cd %s && hg log --template "{date|rfc822date}" -r %s', escapeshellarg($this->tmpDir), escapeshellarg($identifier)), $output);
+                Process::execute(sprintf('cd %s && hg log --template "{date|rfc822date}" -r %s', escapeshellarg($this->tmpDir), escapeshellarg($identifier)), $output);
                 $date = new \DateTime($output[0]);
                 $composer['time'] = $date->format('Y-m-d H:i:s');
             }
@@ -124,7 +124,7 @@ class HgDriver implements VcsDriverInterface
         if (null === $this->tags) {
             $tags = array();
             
-            Filesystem::runProcess(sprintf('cd %s && hg tags', escapeshellarg($this->tmpDir)), $output);
+            Process::execute(sprintf('cd %s && hg tags', escapeshellarg($this->tmpDir)), $output);
             foreach ($output as $tag) {
                 if (preg_match('(^([^\s]+)\s+\d+:(.*)$)', $tag, $match))
                     $tags[$match[1]] = $match[2];
@@ -144,7 +144,7 @@ class HgDriver implements VcsDriverInterface
         if (null === $this->branches) {
             $branches = array();
 
-            Filesystem::runProcess(sprintf('cd %s && hg branches', escapeshellarg($this->tmpDir)), $output);
+            Process::execute(sprintf('cd %s && hg branches', escapeshellarg($this->tmpDir)), $output);
             foreach ($output as $branch) {
                 if (preg_match('(^([^\s]+)\s+\d+:(.*)$)', $branch, $match))
                     $branches[$match[1]] = $match[2];
@@ -183,7 +183,7 @@ class HgDriver implements VcsDriverInterface
             return false;
         }
 
-        $exit = Filesystem::runProcess(sprintf('cd %s && hg identify %s', escapeshellarg(sys_get_temp_dir()), escapeshellarg($url)), $ignored);
+        $exit = Process::execute(sprintf('cd %s && hg identify %s', escapeshellarg(sys_get_temp_dir()), escapeshellarg($url)), $ignored);
         return $exit === 0;
     }
 }
diff --git a/src/Composer/Repository/Vcs/SvnDriver.php b/src/Composer/Repository/Vcs/SvnDriver.php
index 441398632..3a3e7c2ed 100644
--- a/src/Composer/Repository/Vcs/SvnDriver.php
+++ b/src/Composer/Repository/Vcs/SvnDriver.php
@@ -3,7 +3,7 @@
 namespace Composer\Repository\Vcs;
 
 use Composer\Json\JsonFile;
-use Composer\Downloader\Util\Filesystem;
+use Composer\Util\Process;
 
 /**
  * @author Jordi Boggiano <j.boggiano@seld.be>
@@ -79,7 +79,7 @@ class SvnDriver implements VcsDriverInterface
                 $rev = '';
             }
 
-            Filesystem::runProcess(sprintf('svn cat --non-interactive %s', escapeshellarg($this->baseUrl.$identifier.'composer.json'.$rev)),$output);
+            Process::execute(sprintf('svn cat --non-interactive %s', escapeshellarg($this->baseUrl.$identifier.'composer.json'.$rev)),$output);
             $composer = implode("\n", $output);
             unset($output);
 
@@ -90,7 +90,7 @@ class SvnDriver implements VcsDriverInterface
             $composer = JsonFile::parseJson($composer);
 
             if (!isset($composer['time'])) {
-                Filesystem::runProcess(sprintf('svn info %s', escapeshellarg($this->baseUrl.$identifier.$rev)), $output);
+                Process::execute(sprintf('svn info %s', escapeshellarg($this->baseUrl.$identifier.$rev)), $output);
                 foreach ($output as $line) {
                     if (preg_match('{^Last Changed Date: ([^(]+)}', $line, $match)) {
                         $date = new \DateTime($match[1]);
@@ -111,7 +111,7 @@ class SvnDriver implements VcsDriverInterface
     public function getTags()
     {
         if (null === $this->tags) {
-            Filesystem::runProcess(sprintf('svn ls --non-interactive %s', escapeshellarg($this->baseUrl.'/tags')), $output);
+            Process::execute(sprintf('svn ls --non-interactive %s', escapeshellarg($this->baseUrl.'/tags')), $output);
             $this->tags = array();
             foreach ($output as $tag) {
                 $this->tags[rtrim($tag, '/')] = '/tags/'.$tag;
@@ -127,7 +127,7 @@ class SvnDriver implements VcsDriverInterface
     public function getBranches()
     {
         if (null === $this->branches) {
-            Filesystem::runProcess(sprintf('svn ls --verbose --non-interactive %s', escapeshellarg($this->baseUrl.'/')), $output);
+            Process::execute(sprintf('svn ls --verbose --non-interactive %s', escapeshellarg($this->baseUrl.'/')), $output);
 
             $this->branches = array();
             foreach ($output as $line) {
@@ -139,7 +139,7 @@ class SvnDriver implements VcsDriverInterface
             }
             unset($output);
 
-            Filesystem::runProcess(sprintf('svn ls --verbose --non-interactive %s', escapeshellarg($this->baseUrl.'/branches')), $output);
+            Process::execute(sprintf('svn ls --verbose --non-interactive %s', escapeshellarg($this->baseUrl.'/branches')), $output);
             foreach ($output as $line) {
                 preg_match('{^\s*(\S+).*?(\S+)\s*$}', $line, $match);
                 if ($match[2] === './') {
@@ -179,7 +179,7 @@ class SvnDriver implements VcsDriverInterface
             return false;
         }
 
-        $exit = Filesystem::runProcess(sprintf('svn info --non-interactive %s 2>/dev/null', escapeshellarg($url)), $ignored);
+        $exit = Process::execute(sprintf('svn info --non-interactive %s 2>/dev/null', escapeshellarg($url)), $ignored);
         return $exit === 0;
     }
 }
diff --git a/src/Composer/Util/Process.php b/src/Composer/Util/Process.php
new file mode 100644
index 000000000..1a34b0ea7
--- /dev/null
+++ b/src/Composer/Util/Process.php
@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Composer\Util;
+
+use Symfony\Component\Process\Process as BaseProcess;
+
+/**
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ */
+class Process extends BaseProcess
+{
+    /**
+     * runs a process on the commandline
+     *
+     * @static
+     * @param $command the command to execute
+     * @param null $output the output will be written into this var if passed
+     * @return int statuscode
+     */
+    public static function execute($command, &$output = null)
+    {
+        $process = new static($command);
+        $process->run(function($type, $buffer) use ($output) {
+            if (null === $output) {
+               return;
+            }
+
+            echo $buffer;
+        });
+
+        if (null !== $output) {
+           $output = $process->getOutput();
+        }
+
+        return $process->getExitCode();
+    }
+}
\ No newline at end of file