Fix registry configuration failure

Author: zooba

src/manage/config.py

@@ -131,7 +131,13 @@ def load_registry_config(key_path, schema):
                         "This is very unexpected. Please check your configuration " +
                         "or report an issue at https://github.com/python/pymanager.",
                         key_path)
-    resolve_config(cfg, key_path, _global_file().parent, schema=schema, error_unknown=True)
+
+    try:
+        from _native import package_get_root
+        root = package_get_root()
+    except ImportError:
+        root = Path(sys.executable).parent
+    resolve_config(cfg, key_path, root, schema=schema, error_unknown=True)
     return cfg