WIP: Add debug print

conda-store-server/conda_store_server/orm.py

@@ -253,7 +253,7 @@ def build_path(self, conda_store):
         # conda prefix must be less or equal to 255 chars
         # https://github.com/conda-incubator/conda-store/issues/649
         if len(str(res)) > 255:
-            raise BuildPathError("build_path too long: must be <= 255 characters")
+            raise BuildPathError(f"build_path too long: must be <= 255 characters: {res}")
         # Note: cannot use the / operator to prepend the extended-length prefix
         if conda_store.win_extended_length_prefix:
             return pathlib.Path(f"\\\\?\\{res}")