Linux

Been daily for a while now, came over from Garuda, and a few other Arch derivative before that. NixOS is 99.9% fantastic. Lenovo carbon X1 Gen 6. Runs great. Newer custom build higher end desktop with AMD 7900RX GPU. Also runs great. I have a feeling it'll run great on pretty much anything.

The package store is amazing. The package store absolutely dwarfs the AUR. That being said, it seems a lot of the store packages are support / dependency packages that you wouldn't install standalone.
I always had a concern in the back of my mind with the AUR. Is the package trusted by multiple people?
I've not had to rollback much, but it's SUPER simple, and takes seconds for the most part. A reboot at the most.

Things I wish I knew: I run declarative for everything, rather than imperative. Therefore, small changes are a tiny bit more of a hassle. Example: changing the hosts file. Rather than a quick hosts file edit and done, it's a quick edit of the system configuration file, then a nixos-rebuild switch. Nearly any change is like this. (I've not moved to flakes yet.)

if you have any shell scripts, and they're hard-coded to the env: #!/bin/bash, #!/usr/bin/zsh, etc.. you'll need to port those over to #!/usr/bin/env

appimages are well supported, but I ran into an issue where a custom appimage that someone else wrote won't authenticate correctly because the browser isn't included in the environment. I could t-shoot it more, but just too damn lazy to care.

The local storage location for apps can get huge rather quickly, as each iteration/change is stored for rollback purposes. Make sure to setup a garbage collection schedule with whatever your comfortable with.

Would i recommend? Depends on your patience and prior experience. NixOs is VERY VERY different than arch or pretty much any other distro, even other immutable ones. It takes a bit to get your head wrapped around it.

I saw someone say start with Nix (the package manager) on your current distro, learn the ropes, add in pieces like Flakes and Home Manager as you learn. Learn the Nix language. And then move to NixOS. Probably good advice.

I ignored all of that. Jumped in head first. Lots of frustration in the beginning. But now... I won't be going back to a standard linux distro.

Immutability makes me warm and fuzzy. Being absolutely sure that I can easily recover from a boneheaded mistake. Beautiful. Hard drive shits the bed? Drop in a new one, apply my configs, and I'm right back where I was within 30 minutes, complete with all data, apps installed and configured? Priceless.

User/maintainer here. I don't think NixOS is for everyone, but if you're the kind of person it's for, you'll be stuck with us forever. I would definitely recommend giving it a shot if the concept sounds appealing, and feel free to drop by the Matrix channels if you need any help figuring things out - documentation is currently not our strong suit, though people are working on it.

First up, forget about install NixOS as a full distribution for the moment, instead just install the Nix packagemanager on your current system. That gives you like a quick&easy way to enjoy most of the benefits of NixOS without replacing what you already have up&running.

As for things to note:

• nix-command and flakes are the new way of doing things, but still not enabled by default, this can make some old documentation a bit confusing, as this update completely changes the CLI interface, just enable them and ignore everything that keeps taking about the old `nix-env"

• you'll be downloading a lot, NixOS has no binary compatibility for libraries, meaning, if a library changes, everything that depended on it changes as well, this can cause seemingly trivial updates to balloon into 30GB downloads

• expect your installation to be bigger than usual, as upgrades will keep all the old software around, i.e. you can just boot into the previous version with a single click until you nix-collect-garbage -d all the old stuff, on systems with 32GB flash you have to be a bit careful to not run out of storage

• no LTS releases, you'll have to update every six months

• almost no compatibility to third party software by default, /bin/sh and /usr/bin/env are the only thing it has in common with the normal FHS file system layout that everybody else is using, so expect every install.sh to fail, there are of course ways around it (e.g. buildFHSEnv), but they require some extra effort

• all system configuration happens in /etc/nixos/, the rest of /etc is just read-only symlinks

• .nix configuration file syntax is a lazy evaluated functional language, that looks somewhat similar to JSON, it's quite a simple language, but not one that you can easily figure out just by looking at it (e.g. ":" defines a function, functions can only have one argument, everything else is done with currying), read the manual

• https://search.nixos.org/options will be your best friend and nix repl followed by :l to tab-complete your way through the Nix structure

Overall I am very happy with NixOS. Switching to NixOS was the first time in a decade that Linux started to be fun again. It comes with an enormous package collection. Building your own packages is trivial. It is possible to upgrade, downgrade or just run multiple versions in parallel, so no forced-upgrades as on other distributions. Also the Nix package manager can work as first-class build system, meaning git repositories can be treated as full packages (assuming they contain a flake.nix), packages by the distribution no longer have to exist as this weird appendage that has to exist independently from Upstream.

I've been using NixOS for over a year and I can't imagine using anything else. I originally started using it because I liked the idea of version controlling the entire configuration, but now I use it for everything.

The most underrated feature of Nix is being able to instantly roll back an update that breaks something that you don't want to deal with. An update breaks kitty or neovim? If I have something to do I can just roll back and fix it later. Awesome.

It's not for everyone. I can't imagine someone who isn't at least a hobbyist programmer having the desire to overcome the technical nature of it.

Heres my config.

Of course. There's just one pitfall: there's no turning back, once you grasp it, the inferior ways of the past become unbearable.

Yes. Absolutely.

For me it shines in the replicability. For example recently (at the time of writing this) I have gone to a different place without the ability to take my pc with me (its not a laptop duh). I prepared my config and pushed it to the git repo. With me I only brought a usb drive with all my ssh keys and another one with the headless NixOS installation environment. I set it up, had to do some UEFI smashing and hardware adjusting but that's just hardware specific. In like 30 minutes I had my full setup, my hyprland, my doom emacs, and most of that time it was downloading packages.(not to say cache.nixos.org is slow but the internet there was dogsh...)

Would I recommend? If you are ready to do some table smashing and if you are experienced enough with Linux and the nitty gritty of it, then HECK YEAH. You have to know that NixOS is not for beginners. It is a bulletproof distro for ultra power users that, if you use correctly could lead to a impenetrably stable system, which you could reproduce on ANY other machine. And also rollbacks are awesome.

Conclusion? NixOS is awesome!

I've been running NixOS for the past four years in all my computers. It's really, really the end game of Linux distributions for me. But it's not for everybody. The Nix language can be a tough thing to learn, if you're not a programmer and haven't done anything with lazy functional languages before. It's a dynamic language, with not super great documentation for practical things and missing a good language server that would let you to jump to definitions when learning how nixpkgs work and how to build things.

Also, what I think is a serious problem, is how flakes are not yet enabled in the default installation. So first you learn with the basic template, and some helpful person comes talking about how great flakes are, and in a few weeks you might have written your own system flake finally and got it working. Flakes are really important to understand as soon as possible, because with them you get the lock file that gives you real reproducibility between computers and full control on which version of packages you get.

But, when you learn all that, and get your company to go full-on with nix, having flakes in all projects, it's the best programmer's operating system out there. Here's my config to steal stuff.

I had a colleague who ran NixOS on his work laptop and loved it. He even held a presentation to the rest of the engineering dept about it. Then IT contacted him and said company policy only allowed running Ubuntu and he had to reinstall.

He resigned shortly after.

as long as the existing packages are enough*, it's really good. if you need to start packaging stuff yourself this is when you'll usually start hitting the pain points (of both Nix the language and the documentation)

*: nixpkgs does have a huge number of packages but that count is massively over-inflated by essentially being a meta-repo that also contains all the language-specific dependencies of it's packages (think pip or npm) and mostly-auto-generated vim plugin packages and whatnot. for things you'd actually want to install "manually" the breadth of the AUR still trumps it in my experience

I'm using NixOS, and I have a few tips:

1. Use flakes
2. If it ain't working, steam-run it.

I have used it as a daily driver. My biggest issue was the nix language. If I was to go back, I would invest more time in learning nix.

Another daily driver user here (for about a year now). NixOS on all hardware that can run it (desktop, servers). Nix-darwin/home-manager/nix-on-droid everywhere else.

I don't see myself going back to anything else, it's great.

Daily use for several years. Nix the package manager has been the bigger impact for me as I use multiple systems, and they’re not all running NixOS, but my nix configs work across them all. As for NixOS, I would not necessarily recommend it for a non-programmer, but if you’ve ever found yourself thinking about how operating systems are assembled from parts, then NixOS could be a very good fit for you.

I've been daily driving it for six months now. I wish I would've know the Nix language well enough before jumping in to attempt declarative configurations. Not that it's hard.

I have had issues that have had me temporarily try Pop or Debian, but dependency hell is real and the Nix community is wonderful. I have been able to solve every single one of my handful of problems in less than a day or two (sometimes in minutes) with the community.

Edit: oh yeah, and documentation is not great... Again, the community has been my source of answers to many questions.

As many others have said, it's hard to imagine life without NixOS once you get the hang of it.

Yes! It's honestly great of you can accept not going outside of the nixpkgs ecosystem. I'm not enough of a wizard yet to do much more than build a fhs environment to run some outside apps, but for the most part nixos has everything. Oh except KDE didn't have working network manager integration, buuut that was probably something I didn't set up correctly in my nixos config

I do reboot into Ubuntu for Minecraft, but nothing else

I have been a very happy NixOS user for 2 1/2 years now! (https://github.com/axelf4/nixos-config)

NixOS is absolutely worth the effort. You have to frontload a bit of effort setting up configs, but you get a whole lot of incredibly valuable stuff in return, and a lot of things become easier in the long run.

It’s a lot of work tbh. I’ve used arch for 10+ years and recently switched to NixOs to give it a spin, and couldn’t get my exact setup that I wanted for tools and accessories I use, and the system immutability isn’t that practical imo. So I switched back to my old Arch setup and now just use Flakes for various projects I have, basically just the Nix part, which is very nice imo.

I love NixOS. I run it on my home server. However, I can’t daily drive it. I need something a little less rigid to do my day to day work. Although it is greatly satisfying to have everything reproducible, it isn’t always practical to dedicate the time to making it so.

I'm using it currently. Documentation is really annoying to deal with because it's changing so quickly. I went with a flake + home manager setup and tried to keep my config as spartan as possible. Most of the configurations I found online use a ton of files an a deep tree of folders and I found that really hard to follow. You can look at my configuration here.

Using NixOS as my daily OS on a X1 since six years now.

The first months have been hard as at this time was no installer at all and I had to do everything manually. After a while I got used to the update process.

Recently I switched to Nix Flakes which is another challenge but seems to make the Nix way even more consequent.

The only odd thing what drives me nerves is that compiling on that machine takes sometimes a half day.

Besides this it is still the best OS I ever used

I really like it. The language took me time to learn but so far it has been worth it. The ability to rollback in git and rebuild has saved my computer countless times; usually from my own mistakes.

My wife's system is nixOS, (~12 year old laptop) it runs great.

I've been using Guix system for a couple years and am really liking it. I got a new computer and put popos on it for the seamless Nvidia drivers, but I still have guix package manager and Guix system on other computers.

Using it on a somewhat old Microsoft surface laptop, and it's been really great. I really like nix for packages, but nixos got very, very cool when I was able to switch DE by changing two lines in the configuration file and everything just worked. It's very hard to break too, which is useful for me...

I installed it last week. It's been pretty chill so far. I love the fact that my system is fully reproducible and version managed by git. Everything I need has been available. It feels a bit like the AUR to me: I need something, I look in nixpkgs and it's already there.

One thing I do find annoying is dependencies for work projects. It took me about an hour to figure out that some library our rust project depended on, expected some specific version of gdk or something, and that's why the project wouldn't compile. But apart from that, very nice and would definitely recommend!

You can combine stable and unstable packages since they can have different dependencies

Given this you can have the base system be running the unstable versions, while holding back things like wine from upgrading

I had as a daily driver for a few weeks through VirtualBox. Next week I plan on installing it as a secondary OS to see if it plays well with my hardware and if so, I'll make it my only OS.

I tried Nixos but it was overkill for my desktop usage. The learning time is a cost but also, on my old laptop, there is a noticeable performance loss comparing to arch. The benefits is not enough for my usecase. I prefer dealing with arch shitty updates.