I do, Barry. Something like this (not tested):

struct parse_event
{
    template <typename T>
    parse_event(T&& value) : token(std::forward<T>(value)) {}
   
#ifndef VARIANT_SAFELY_TAKES_CHAR_POINTER

    // Workaround

    parse_event(const char* s) : token(std::string(s)) {}
#endif
   
    std::variant<bool, int, std::string> token;
};

The idea is to disable the workaround code when the C++ library implementation has the P0608/P1957 fixes.