From a3018c43eb9e8f6661b16e07d7220b062458ac44 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Wed, 9 May 2012 20:03:56 +0200
Subject: [PATCH] Infer stability flags for requirements that have an explicit
 version required of a lower stability

---
 src/Composer/Package/Loader/RootPackageLoader.php | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/Composer/Package/Loader/RootPackageLoader.php b/src/Composer/Package/Loader/RootPackageLoader.php
index f7b313bcb..c5cf446b5 100644
--- a/src/Composer/Package/Loader/RootPackageLoader.php
+++ b/src/Composer/Package/Loader/RootPackageLoader.php
@@ -119,6 +119,7 @@ class RootPackageLoader extends ArrayLoader
     {
         $stabilities = BasePackage::$stabilities;
         foreach ($requires as $reqName => $reqVersion) {
+            // parse explicit stability flags
             if (preg_match('{^[^,\s]*?@('.implode('|', $stabilities).')$}i', $reqVersion, $match)) {
                 $name = strtolower($reqName);
                 $stability = array_search(VersionParser::normalizeStability($match[1]), $stabilities);
@@ -127,6 +128,18 @@ class RootPackageLoader extends ArrayLoader
                     continue;
                 }
                 $stabilityFlags[$name] = $stability;
+
+                continue;
+            }
+
+            // infer flags for requirements that have an explicit -dev or -beta version specified for example
+            if (preg_match('{^[^,\s@]+$}', $reqVersion) && 'stable' !== ($stabilityName = VersionParser::parseStability($reqVersion))) {
+                $name = strtolower($reqName);
+                $stability = array_search($stabilityName, $stabilities);
+                if (isset($stabilityFlags[$name]) && $stabilityFlags[$name] > $stability) {
+                    continue;
+                }
+                $stabilityFlags[$name] = $stability;
             }
         }