diff -up ./bin/composer.rpm ./bin/composer
--- ./bin/composer.rpm	2016-01-27 14:04:22.000000000 +0100
+++ ./bin/composer	2016-01-27 16:32:11.313455545 +0100
@@ -5,7 +5,7 @@ if (PHP_SAPI !== 'cli') {
     echo 'Warning: Composer should be invoked via the CLI version of PHP, not the '.PHP_SAPI.' SAPI'.PHP_EOL;
 }
 
-require __DIR__.'/../src/bootstrap.php';
+require '/usr/share/php/Composer/autoload.php';
 
 use Composer\Console\Application;
 
diff -up ./src/Composer/Autoload/AutoloadGenerator.php.rpm ./src/Composer/Autoload/AutoloadGenerator.php
--- ./src/Composer/Autoload/AutoloadGenerator.php.rpm	2016-01-27 14:04:22.000000000 +0100
+++ ./src/Composer/Autoload/AutoloadGenerator.php	2016-01-27 16:32:11.313455545 +0100
@@ -287,7 +287,7 @@ EOF;
         file_put_contents($targetDir.'/autoload_real.php', $this->getAutoloadRealFile(true, (bool) $includePathFileContents, $targetDirLoader, (bool) $includeFilesFileContents, $vendorPathCode, $appBaseDirCode, $suffix, $useGlobalIncludePath, $prependAutoloader));
 
         $this->safeCopy(__DIR__.'/ClassLoader.php', $targetDir.'/ClassLoader.php');
-        $this->safeCopy(__DIR__.'/../../../LICENSE', $targetDir.'/LICENSE');
+        $this->safeCopy((getenv('BUILDROOT')?:'') . '/usr/share/composer/LICENSE', $targetDir.'/LICENSE');
 
         if ($this->runScripts) {
             $this->eventDispatcher->dispatchScript(ScriptEvents::POST_AUTOLOAD_DUMP, $this->devMode, array(), array(
diff -up ./src/Composer/Command/DiagnoseCommand.php.rpm ./src/Composer/Command/DiagnoseCommand.php
--- ./src/Composer/Command/DiagnoseCommand.php.rpm	2016-01-27 14:04:22.000000000 +0100
+++ ./src/Composer/Command/DiagnoseCommand.php	2016-01-27 16:33:31.333845672 +0100
@@ -134,12 +134,6 @@ EOT
         $io->write('Checking disk free space: ', false);
         $this->outputResult($this->checkDiskSpace($config));
 
-        $io->write('Checking pubkeys: ', false);
-        $this->outputResult($this->checkPubKeys($config));
-
-        $io->write('Checking composer version: ', false);
-        $this->outputResult($this->checkVersion());
-
         return $this->failures;
     }
 
diff -up ./src/Composer/Json/JsonFile.php.rpm ./src/Composer/Json/JsonFile.php
--- ./src/Composer/Json/JsonFile.php.rpm	2016-01-27 14:04:22.000000000 +0100
+++ ./src/Composer/Json/JsonFile.php	2016-01-27 16:32:11.313455545 +0100
@@ -155,7 +155,7 @@ class JsonFile
             self::validateSyntax($content, $this->path);
         }
 
-        $schemaFile = __DIR__ . '/../../../res/composer-schema.json';
+        $schemaFile = (getenv('BUILDROOT')?:'') . '/usr/share/composer/res/composer-schema.json';
         $schemaData = json_decode(file_get_contents($schemaFile));
 
         if ($schema === self::LAX_SCHEMA) {