[lib] C api: do not use pybuildvalue anymore

library/_cadbiom/cadbiom.c

@@ -754,7 +754,11 @@ static PyObject* unflatten(PyObject *self, PyObject *args, PyObject *kwds)
                 Py_DECREF(item);
 
                 // Equivalent of get_unshift_code but in full C
-                unshift_code = Py_BuildValue("i", raw_get_unshift_code(&var_num, &shift_step)); // new ref
+                #ifdef IS_PY3K
+                unshift_code = PyLong_FromLong(raw_get_unshift_code(&var_num, &shift_step)); // new ref
+                #else
+                unshift_code = PyInt_FromLong(raw_get_unshift_code(&var_num, &shift_step)); // new ref
+                #endif
 
 
             if(unshift_code == NULL) {