Function __stok_env

include/exec/start_now.hpp:40–43

  namespace __start_now
  {
    constexpr auto __stok_env(STDEXEC::inplace_stop_source& __source)
    {
      return env_from([&](STDEXEC::get_stop_token_t) noexcept { return __source.get_token(); });
    }

    inline constexpr auto __mkenv =
      []<class _Env>(_Env&& __env, STDEXEC::inplace_stop_source& __source)