Go until 1.3 supported all the way back to Windows 2000. I was pretty sad when they yanked support, the idea of becoming a hermit running Win2k writing Go is an oddly satisfying fantasy.
go is one of the rare language i can imagine using on a 20+ yo hardware / software stack. The whole go tooling is so much focused on simple and performant design that i think it wouldn't be too bad of an experience.