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common/adc_traits.h

@@ -205,7 +205,9 @@ concept adc_tuple_like = adc_is_tuple_v<T> == true;
 template <typename T>
 // from https://stackoverflow.com/questions/74383254/concept-that-models-only-the-stdchrono-duration-types
 concept adc_time_duration_c = requires {
-    []<class Rep, class Period>(std::type_identity<std::chrono::duration<Rep, Period>>) {}(std::type_identity<T>());
+    []<class Rep, class Period>(std::type_identity<std::chrono::duration<Rep, Period>>) {
+
+    }(std::type_identity<std::remove_cvref_t<T>>());
 };