...

src/calibre/ebooks/metadata/sources/base.py

@@ -212,6 +212,9 @@ class Source(Plugin):
     def is_customizable(self):
         return True
 
+    def customization_help(self):
+        return 'This plugin can only be customized using the GUI'
+
     def config_widget(self):
         from calibre.gui2.metadata.config import ConfigWidget
         return ConfigWidget(self)

src/calibre/gui2/actions/catalog.py

@@ -20,6 +20,9 @@ class GenerateCatalogAction(InterfaceAction):
     action_spec = (_('Create a catalog of the books in your calibre library'), 'catalog.png', 'Catalog builder', None)
     dont_add_to = frozenset(['menubar-device', 'toolbar-device', 'context-menu-device'])
 
+    def genesis(self):
+        self.qaction.triggered.connect(self.generate_catalog)
+
     def generate_catalog(self):
         rows = self.gui.library_view.selectionModel().selectedRows()
         if not rows or len(rows) < 2: