Freeze mutable values nested inside tuple arguments

tests/test_cache_regressions.py

@@ -0,0 +1,17 @@
+from typing import Dict, Tuple
+
+from great_ai import GreatAI
+
+
+def test_nested_tuple_inputs_can_be_cached(isolated_context: None) -> None:
+    calls = 0
+
+    @GreatAI.create
+    def predict(value: Tuple[Dict[str, int]]) -> int:
+        nonlocal calls
+        calls += 1
+        return value[0]["x"]
+
+    assert predict(({"x": 7},)).output == 7
+    assert predict(({"x": 7},)).output == 7
+    assert calls == 1