This papers proposes a new approach to solving the problem of non-transient constexpr allocation. The result is variables of types like `std::vector<T>` and `std::string` are able persist as `constexpr` variables and, with [[P4340R0] (Extending constant template parameter support by customizing std::meta::reflect_constant)](https://wg21.link/p4340r0), be usable as constant template parameters.