Index: rqt_gui/src/rqt_gui/ros_plugin_provider.py
===================================================================
--- rqt_gui.orig/src/rqt_gui/ros_plugin_provider.py
+++ rqt_gui/src/rqt_gui/ros_plugin_provider.py
@@ -109,6 +109,10 @@ class RosPluginProvider(PluginProvider):
     def _parse_plugin_xml(self, package_name, plugin_xml):
         plugin_descriptors = []
 
+        # Gentoo: strip ros_packages to get the real path.
+        if not os.path.isfile(plugin_xml):
+            plugin_xml = plugin_xml.replace('ros_packages/', '')
+
         if not os.path.isfile(plugin_xml):
             qCritical('RosPluginProvider._parse_plugin_xml() plugin file "%s" in package "%s" not found' % (plugin_xml, package_name))
             return plugin_descriptors