The author suggests he wants to "expand this little DSL later so does something a little more complicated using some non-C++ syntax", so Nim's ordinary code eva

The author suggests he wants to "expand this little DSL later so does something a little more complicated using some non-C++ syntax", so Nim's ordinary code evaluation at compile time wouldn't help either. On the other hand, if he restricted himself to just using C++ expressions, he would be fine using constexpr (assuming he can use newer standards of the language).