Is Windows supported at all?

I've been using cygwin on Windows for a long time with great great success. Cygwin has really been a savior to me. However, these days, Virtualbox is starting to become necessary because I need heavy duty unix support. The idea of running Perl for anything in straight windows gives me the willies. I like Windows as a desktop. And I am slave to it because I am a Go player and all the software is windows-only. But I need my Unix!