So, you're saying C2V is closed source then? Which is exactly what Alex said isn't true.
There is a difference between not releasing the source yet versus closed source. Often, closed source refers to not ever going to open the source, including commercial interests. In regards to not yet releasing the source, things can be in the process of being worked on, made ready for public review, or being organized where other programmers can more sensibly contribute to the source.
We could, but it's not yet public. Rest assured, it exists and there is work going forward on it to get it out the door somewhat soon.
You may find the public `go2v` work interesting. It's being worked on by some other folks in the community: https://github.com/vlang/go2v