I'm afraid not. I haven't seen anything other than PureDarwin that runs at all modern versions of Darwin. A Hackintosh on a relatively basic system (integrated

I'm afraid not. I haven't seen anything other than PureDarwin that runs at all modern versions of Darwin. A Hackintosh on a relatively basic system (integrated graphics, nothing strange that isn't in an actual Mac) might be the easiest way for you to do this, although you'll still have to deal with the other things you mentioned.