Clang seemed to think this was necessary.

I'm not certain if it is, but it's pretty harmless to keep on
the template.

Meta/Container/vector.h

@@ -69,6 +69,7 @@ namespace Alepha::Hydrogen::Meta::Container
 		};
 
 		template< typename MetaFunction, typename Arg1, typename First, typename ... Members >
+		requires( sizeof...( Members ) != 0 )
 		constexpr decltype( auto )
 		invoke_call( MetaFunction func, type_value< Arg1 > arg1, dereferenced_iterator< vector< First, Members... > > deref )
 		{