Re: You're not a hipster unless you're still mourning OS/2.
eCS works fine in a VM on macOS. Even the audio.
What would have been nice is if Sun's Project Looking Glass desktop had been ported to OS/2. PLG was 10 years ahead of its time. Soon it will be 20 years ahead of its time.
Blimey - it's been open-sourced :
https://en.wikipedia.org/wiki/Project_Looking_Glass