cppfx - cpp/c++, b2 build

#include <utxcpp/core.hpp>
#include <tuple>
#include <complex>

using namespace utx::string_literals;
using namespace std::complex_literals;

template <utx::kspt::printable_tuple T>
class fizz {};

template <utx::kspt::tuple T>
class buzz {};

template <utx::kspt::printable T>
class but {};

template <typename T>
class fit {};

int main()
{
        using T1 = std::tuple<float, int, utx::string>;
        using T2 = std::tuple<float, std::string, utx::Pest>;
        using T3 = float;
        using T4 = utx::Pest;

        fizz<T1>{};
        buzz<T1>{};
        // but<T1>{}; // T1 does not satisfy utx::kspt::printable

        // fizz<T2>{}; // T2 does not satisfy utx::kspt::printbale_tuple
        buzz<T2>{};

        // fizz<T3>{};
        // buzz<T3>{};
        but<T3>{};

        //but<T4>{};
        fit<T4>{};
}