Allow the use of self.version in package links

src/Composer/Package/Loader/ArrayLoader.php

@@ -140,7 +140,7 @@ class ArrayLoader
             if (isset($config[$type])) {
                 $method = 'set'.ucfirst($description);
                 $package->{$method}(
-                    $this->loadLinksFromConfig($package->getName(), $description, $config[$type])
+                    $this->loadLinksFromConfig($package, $description, $config[$type])
                 );
             }
         }
@@ -152,12 +152,15 @@ class ArrayLoader
         return $package;
     }
 
-    private function loadLinksFromConfig($srcPackageName, $description, array $linksSpecs)
+    private function loadLinksFromConfig($package, $description, array $linksSpecs)
     {
         $links = array();
         foreach ($linksSpecs as $packageName => $constraint) {
+            if ('self.version' === $constraint) {
+                $constraint = $package->getVersion();
+            }
             $constraint = $this->versionParser->parseConstraints($constraint);
-            $links[]    = new Package\Link($srcPackageName, $packageName, $constraint, $description, $constraint);
+            $links[]    = new Package\Link($package->getName(), $packageName, $constraint, $description, $constraint);
         }
 
         return $links;

tests/Composer/Test/Package/Loader/ArrayLoaderTest.php

@@ -0,0 +1,39 @@
+<?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\Test\Package\Loader;
+
+use Composer\Package\Loader\ArrayLoader;
+
+class ArrayLoaderTest extends \PHPUnit_Framework_TestCase
+{
+    public function setUp()
+    {
+        $this->manager = $this->getMock('Composer\Repository\RepositoryManager');
+        $this->loader = new ArrayLoader($this->manager);
+    }
+
+    public function testSelfVersion()
+    {
+        $config = array(
+            'name' => 'A',
+            'version' => '1.2.3.4',
+            'replace' => array(
+                'foo' => 'self.version',
+            ),
+        );
+
+        $package = $this->loader->load($config);
+        $replaces = $package->getReplaces();
+        $this->assertEquals('== 1.2.3.4', (string) $replaces[0]->getConstraint());
+    }
+}