just googling vfio kvm leads you to very thorough arch linux topic (with a bit of drama on the end, whatever)
Of course I assume that people that frequent hacker news are geeks and tinkerers.
>> or find a hipster
Seriously? This is a pretty outdated characterization...Liked Krakow a lot, specially the subterranean bars. :)
http://www.macincloud.com works very well, and they have billing by the hour and versions of OS X ranging from Lion through to El Capitan.
No connection with them, just a satisfied customer.
Also, no simruntime for 7.0 and before works in El Capitan, regardless of Xcode version.
Interestingly, by doing this developers have a harder time supporting me (iOS 6 and 7 on phone/tablet). The result is forgoing app updates and even new apps altogether that I can't download. This pushes me to upgrade, and keeps the iOS adoption rate quite high. Facilitating devs in supporting old iOS versions does the opposite. I'm not a fan of this but I can easily imagine the benefits for Apple.
Of course having a real device is much better, but as a web developer, this helped me pick up a Safari only bug very easily without needing to spend on a real device.
You can use OSX's debugger in Safari to remote debug a web page in the simulator, which I think is pretty neat.