Fix path logic for development installs

sgm/inference/api.py

@@ -185,6 +185,11 @@ class SamplingPipeline:
         self.config = str(config_path / self.specs.config)
         self.ckpt = str(model_path / self.specs.ckpt)
         if not os.path.exists(self.config):
+            # This supports development installs where configs is root level of the repo
+            if config_path is None:
+                config_path = (
+                    pathlib.Path(__file__).parent.parent.parent.resolve() / "configs/inference"
+                )
             raise ValueError(
                 f"Config {self.config} not found, check model spec or config_path"
             )