feat(app): more detailed messages when loading custom nodes

Author: psychedelicious

invokeai/app/invocations/custom_nodes/init.py

@@ -10,10 +10,12 @@
 from invokeai.backend.util.logging import InvokeAILogger
 
 logger = InvokeAILogger.get_logger()
-loaded_count = 0
+loaded_packs: list[str] = []
+failed_packs: list[str] = []
 
+custom_nodes_dir = Path(__file__).parent
 
-for d in Path(__file__).parent.iterdir():
+for d in custom_nodes_dir.iterdir():
     # skip files
     if not d.is_dir():
         continue
@@ -47,12 +49,16 @@
         sys.modules[spec.name] = module
         spec.loader.exec_module(module)
 
-        loaded_count += 1
+        loaded_packs.append(module_name)
     except Exception:
+        failed_packs.append(module_name)
         full_error = traceback.format_exc()
-        logger.error(f"Failed to load node pack {module_name}:\n{full_error}")
+        logger.error(f"Failed to load node pack {module_name} (may have partially loaded):\n{full_error}")
 
     del init, module_name
 
+loaded_count = len(loaded_packs)
 if loaded_count > 0:
-    logger.info(f"Loaded {loaded_count} node packs from {Path(__file__).parent}")
+    logger.info(
+        f"Loaded {loaded_count} node pack{'s' if loaded_count != 1 else ''} from {custom_nodes_dir}: {', '.join(loaded_packs)}"
+    )