From c1fe2368b0e344ff1a8bb8e23a31c1f792a532ee Mon Sep 17 00:00:00 2001
From: mudrd8mz <mudrd8mz>
Date: Tue, 12 May 2009 08:12:48 +0000
Subject: [PATCH] Module can define its version to 0 so it is not installed.

---
 lib/upgradelib.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/upgradelib.php b/lib/upgradelib.php
index 457c478a3c..60d1bb14dd 100644
--- a/lib/upgradelib.php
+++ b/lib/upgradelib.php
@@ -366,6 +366,11 @@ function upgrade_plugins_modules($startcallback, $endcallback) {
         require($fullmod .'/version.php');  // defines $module with version etc
 
         if (empty($module->version)) {
+            if (isset($module->version)) {
+                // Version is empty but is set - it means its value is 0 or ''. Let us skip such module.
+                // This is inteded for developers so they can work on the early stages of the module.
+                continue;
+            }
             throw new plugin_defective_exception($component, 'Missing version value in version.php');
         }
 
-- 
2.39.5