An incredibly simple thing that let's you make nested templates sheesh right

shit.cpp

template <template <typename...> typename Template, std::size_t Size, typename... Type>
struct make_nested {
  using internal =  Template<typename make_nested<Template, Size-1, Type...>::internal>;
};

template <template <typename...> typename Template, typename... Type>
struct make_nested<Template, 1, Type...> {
  using internal = Template<Type...>;
};


template <std::size_t Size, typename Type, typename Alloc>
using nested_vec = typename make_nested<std::vector, Size, Type, Alloc>::internal;