If you need the latest OS version for your software to run, you're doing software design wrong. Except for very special features, software should run all the wa

If you need the latest OS version for your software to run, you're doing software design wrong. Except for very special features, software should run all the way to 10-20 years old OS versions. And if it doesn't, you should have abstractions in place such that all you have to do is change a dll and be good to go again. Why the hell would a high level language like Ruby have such deep OS dependencies? Use the goddamn POSIX standard and you'll be compatible to every single important OS that's come out in the last decades, except for Windows which can be made POSIX compatible with a few layers of abstraction.