> With Nix, however, it was a matter of just describing a few packages in a shell and boom, Ruby in one folder, no Ruby (and thus no mess) everywhere else.
This approach was already done by GoboLinux in 2005. And even GoboLinux was by far not the first - versioned AppDirs existed for a long time before; even perl stow enabled that. NixOS just uses a modified variant e. g. via hashed directory names. But I already adopted a similar scheme as GoboLinux did soon after I switched to Linux in 2005 (well 2004 but mostly 2005 as I was still a big noob in 2004 really).
> I started adding shell.nix files to all my little projects
I appreciate that NixOS brought good ideas to Linux here; having reliable snapshots is good. If a user has a problem, someone else might have solved it already, so you could "jump" from snapshot to snapshot. No more need for StackOverflow. The HiveMind took over.
But with all its pros, the thing I hate by far the most in NixOS is .. nix. I think the language is ugly beyond comparison; only shell scripts are uglier. I instead opted for a less sophisticated solution in that ruby acts as the ultimate glue to whatever underlying operating system is used. What I would like is a NixOS variant that is simpler to use - and doesn't come with nix. Why can't I use ruby instead? Or simple config files? I am very used to simple yaml files; all my system description is stored in simple yaml files. Since +20 years. That approach works very well (ruby expands these to any target destination; for instance, I have aliases for e. g. bash, but these are stored in yaml files and from that ruby then generates any desired target format, such as also cmder on Windows and so forth).
> In fact GNU forked Nix fairly early and made their own spin called Guix, whose big innovation is that, instead of using the unwieldy Nix-language, it uses Scheme.
I am glad to not be the only one to dislike nix, but boy ... scheme? Aka Lisp? Seriously???
Young people use lisp? I somehow doubt that.
(cons* (channel
(name 'nonguix)
(url "https://gitlab.com/nonguix/nonguix")
Why would users know what cons* does, anyway? That's stupid.
YAML files exist for a reason. Keep. Things. Simple. (I know, I know, many use YAML files in a complex manner with gazillion nested indentation. Well, they are using it in a wrong way, then they complain about how bad yaml is.)
> Since the code is pretty much just Scheme and the different mechanisms available are fairly well documented (see caveat below), the barrier to entry is much lower than with Nix in my opinion.
Can't evaluate this. To me it seems as if NixOS may have changed, but Nix was always a big barrier. I decided to not want to overcome it, since I did not want to be stuck with a horrible language I don't want to use.