When comparing Haiku vs Artix Linux, the Slant community recommends Artix Linux for most people. In the question“What is the best desktop OS?” Artix Linux is ranked 4th while Haiku is ranked 29th.
Ranked in these QuestionsQuestion Ranking
Pro Very Fast
Pro Beta has been released
After about 6 years since the alpha version, beta has been released on Fri, 2018-09-28. Check here for release notes.
Pro Only need 512mb ram
Pro Runs perfectly on old Hardware
Pro No systemd
Pro Close to bare Arch Linux
No learning curve if you're coming from Arch or any of its derivatives
You can have a functional system in less than 10 mins using GUI installer OR you can do it "the Arch way"
Artix actively supports the runit init system known from Void Linux. (Equally besides the OpenRC init system known from Gentoo.)
Pro Rolling distro
Only the software you would need like Terminal emulator, file manager, media player and a browser.
Con No one uses it
It's a very niche OS that no one uses.
Con Small community
It is important when developing to be familiar with tools that other developers use. You can make any utility in any language you feel like, but if it's in an esoteric language that no one can read targeting a small platform that no one uses, then it was just something you did as a hobbyist, not as a developer.
This is not to say that Haiku isn't a great operating system to hack around on. Just don't delude yourself into thinking you're doing it to get familiar with tools that you need to know to be a better developer.
It's still in beta and quite unstable. Making it unsuitable for developing applications of any kind.
Con UI quite different to other OSes
Con Few Arch packages might not be available yet
Developers are working migrating all packages into their own repositories while ensuring there's no systemd malware.