> In particular, the attitude of some Arch users annoys me as they think all other distributions are inferior.
Well, they are... if you want rolling releases that are very up-to-date.
(That not to say there aren't valid reasons not to want a RR distro.)
> But IMHO NixOS/GuixSD are the future as they tackle a big set of issues most distros ignore. Namely making sysadmin transactional and reproducible. Perhaps they're not ready for prime time yet, though.
Agreed, but it really depends on whether NixOS/GuixSD can get enough packagers (people) to get close enough to Arch Linux in terms of "recentness"... so that people would actually start to adopt these distros.
Ideally, I'd want one of this type of distro, but in practice Arch Linux is just ridiculously more current for everything I care about. (I know that I should probably volunteer as a packager, but I just don't have the time or motiviation to do the "make-work" that most of packager life is.)