support conversion of controlnets from safetensors to diffusers

invokeai/backend/install/model_install_backend.py

@@ -460,6 +460,12 @@ class ModelInstall(object):
             possible_conf = path.with_suffix(".yaml")
             if possible_conf.exists():
                 legacy_conf = str(self.relative_to_root(possible_conf))
+            else:
+                legacy_conf = Path(
+                    self.config.root_path,
+                    "configs/controlnet",
+                    ("cldm_v15.yaml" if info.base_type == BaseModelType("sd-1") else "cldm_v21.yaml"),
+                )
 
         if legacy_conf:
             attributes.update(dict(config=str(legacy_conf)))

invokeai/backend/model_management/models/controlnet.py

@@ -132,13 +132,14 @@ def _convert_controlnet_ckpt_and_cache(
     model_path: str,
     output_path: str,
     base_model: BaseModelType,
-    model_config: ControlNetModel.CheckpointConfig,
+    model_config: str,
 ) -> str:
     """
     Convert the controlnet from checkpoint format to diffusers format,
     cache it to disk, and return Path to converted
     file. If already on disk then just returns Path.
     """
+    print(f"DEBUG: controlnet config = {model_config}")
     app_config = InvokeAIAppConfig.get_config()
     weights = app_config.root_path / model_path
     output_path = Path(output_path)