> But on the other hand, if you have a `char const*`, it's trivial to obtain a
> string_view from it, whereas the reverse... isn't.

<source>:9:27: error: 'std::basic_string_view<char>' is not a valid type for a template non-type parameter because it is not structural
    9 | template<std::string_view sv> consteval auto to_charp()
      | ^~

Yeah :-(