Well, after a day or so of beating my head against a wall I went ahead and installed windows using Boot Camp, so uh... there you go. There's probably a way to do it using Wine or Steam CMD but this way was pretty painless actually and works fine, so if anyone else was wondering, I'd say Boot Camp ftw. :)

Hey guys! I've been googling this for a couple hours now and haven't really found much useful info so I figured I'd just ask, is it possible to upload mods to the workshop from a mac at all? I've got my mod working in the mods folder but life would be a lot easier if I could just run it as a private mod through the workshop while testing.