Allow building on 3.13 freetreading python.

Author: ionelmc

src/lazy_object_proxy/cext.c

@@ -1435,8 +1435,12 @@ moduleinit(void)
         return NULL;
 
     Py_INCREF(&Proxy_Type);
-    PyModule_AddObject(module, "Proxy",
-            (PyObject *)&Proxy_Type);
+    PyModule_AddObject(module, "Proxy", (PyObject *)&Proxy_Type);
+
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(module, Py_MOD_GIL_NOT_USED);
+#endif
+
     return module;
 }
 

tox.ini

@@ -14,7 +14,7 @@ envlist =
     clean,
     check,
     docs,
-    {py39,py310,py311,py312,pypy39,pypy310}-{cover,nocov},
+    {py39,py310,py311,py312,py312t,pypy39,pypy310}-{cover,nocov},
     report
 ignore_basepython_conflict = true
 
@@ -26,6 +26,7 @@ basepython =
     py310: {env:TOXPYTHON:python3.10}
     py311: {env:TOXPYTHON:python3.11}
     py312: {env:TOXPYTHON:python3.12}
+    py313t: {env:TOXPYTHON:python3.13t}
     {bootstrap,clean,check,report,docs,codecov,coveralls,extension-coveralls}: {env:TOXPYTHON:python3}
 setenv =
     PYTHONPATH={toxinidir}/tests