Try to fix old clang

src/base/refl/auto_accessor.h

@@ -104,14 +104,14 @@ constexpr std::pair<const std::string_view, Accessor<Object>>
 #endif
     };
 
+template <class T>
+using IsSerializableT = std::bool_constant<IsSerializable<T>>;
+
 template <class Object,
     class Members =
 #ifndef __clang_analyzer__
-        std::remove_cvref_t<decltype(all_member_functor_v<Object,
-            []<class T>()
-            {
-	            return IsSerializable<T>;
-            }>)>
+        std::remove_cvref_t<
+            decltype(all_member_functor_v<Object, IsSerializableT>)>
 #else
         std::tuple<>
 #endif

src/base/refl/auto_struct.h

@@ -679,31 +679,24 @@ concept is_reflectable =
     || (std::is_aggregate_v<T>
         && is_structure_bindable_v<T> != structure_bindable::no);
 
-template <class T, auto L, class... PreMPs>
+template <class T, template <class> class Checker, class... PreMPs>
 constexpr static auto all_member_functor_v{
     []<class... Bases, class... MF>(std::tuple<Bases...> *,
         std::tuple<MF...>)
     {
-	    if constexpr (L.template operator()<T>()) {
+	    if constexpr (Checker<T>::value) {
 		    return std::tuple<std::tuple<PreMPs...>>{};
 	    }
 	    else if constexpr (is_reflectable<T>) {
 		    return decltype(std::tuple_cat(
-		        all_member_functor_v<Bases, L, PreMPs...>...,
+		        all_member_functor_v<Bases, Checker, PreMPs...>...,
 		        all_member_functor_v<member_functor_t<MF>,
-		            L,
+		            Checker,
 		            PreMPs...,
 		            MF>...)){};
 	    }
     }(std::add_pointer_t<bases_t<T>>{}, member_functors_v<T>)};
 
-template <class T, auto L, class... PreMPs>
-constexpr static std::tuple<std::tuple<PreMPs...>>
-    all_member_functor_v<T,
-        L,
-        std::enable_if_t<L.template operator()<T>()>,
-        PreMPs...>{};
-
 namespace Functors
 {
 namespace Composite