When comparing Haiku vs Devuan GNU+Linux, the Slant community recommends Devuan GNU+Linux for most people. In the question“What is the best laptop OS?” Devuan GNU+Linux is ranked 6th while Haiku is ranked 31st. The most important reason people chose Devuan GNU+Linux is:
It is stable like Debian.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
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 Stability
Pro Runs perfectly on old Hardware
Pro Stability
It is stable like Debian.
Pro It's Debian
Devuan is Debian just without systemd, it just mirrors the the Debian archive and repacks packages that have hard dependencies on systemd.
Pro Excellent for normal people
It is easy to use and is a good choice for beginners.
Pro No Systemd
Pro Most decent look amongst other XFCE distros
Default XFCE theme is unique of all the XFCE distos including MXLinux, Xubuntu etc.
Cons
Con No one uses it
It's a very niche OS that no one uses.
Con Unfinished
It's still in beta and quite unstable. Making it unsuitable for developing applications of any kind.
Con Language support is terrible
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.
Con UI quite different to other OSes
Con Difficult to install on non-free hardware
Unlike Debian, Devuan offers no unfree netinstall media, so if your system needs unfree drivers (e.g a laptop or a tablet), you'll have to download the Debian firmware on a separate USB.
Con No systemd
Con Fragmentation
Forked distributions like Devuan and Artix fragment the Linux community and hurt the original project. Debian users who do not want systemd should use Slackware or BSD instead.