re-order the imports

src/makim/core.py

@@ -17,6 +17,7 @@
 import warnings
 
 from copy import deepcopy
+from itertools import product
 from pathlib import Path
 from typing import Any, Dict, List, Optional, Union, cast
 
@@ -485,9 +486,6 @@ def _generate_matrix_combinations(
             for k in keys
         ]
 
-        # Generate all combinations
-        from itertools import product
-
         combinations = []
         for combo in product(*values):
             combinations.append(dict(zip(keys, combo)))