And things such as ruby don't work on it. Well, what shall I say? The "best" ideas get beaten when in practically already works very well - aka Linux. People need to compare to Linux and if there are failure points, they need to fix it. Haiku keeps on failing at core considerations. If you look at guides, they recommend to "run in qemu". Well, that is a fever dream. They need to focus on real hardware. And they need to support programming languages just as Linux does. And modern hardware too. Would be great if Haiku could shape up but the development is way too slow. I've been looking at it for many years - they are simply unable to leave the dream era. ReactOS is even worse in this regard. At some point those projects gave up on the real world. I think qemu, while great, kind of made this problem worse, since people no longer focus on real hardware; the mantra is "if it works in a virtual EM, it is perfect". Until one notices that it doesn't work quite as well on real hardware. Case in point how ruby does not work on Haiku. Ruby works well on BSD (for the most part), linux (no surprise) and also windows (a bit annoying, but it does work there too and surprisingly well, for about 99% of the use cases, though it is annoyingly slower in startup time compared to linux).

Getting Rebol running on Haiku was fairly easy task, so I guess it shouldn't be that hard for Ruby too, if someone's willing to do the work.

People aren't really running servers on Haiku, which is basically the only relevance to use Ruby in 2026, Rails powered web applications.

Then again, there is a golden opportunity to become a Ruby contributor, road to fame on Ruby contribution list.