I've been on nix for only 2-3 days so take what I say with a grain of salt. I think it's pretty useful. Back in Arch/EOS, I always find ways to mess up the system (I switched to Nix because of a failed system update on EOS). On Nix, it's so easy to roll back and you don't even need to use the terminal.

sudo nixos-rebuild switch --upgrade

There are (afaik) 3 channels you can choose: stable, unstable, and small(?). I'm staying on stable for now. Package manager is slower than pacman, imo, and it's not as straightforward as Arch. Some programs (like kde connect) need to have service enabled in config.

[–] philm@programming.dev 1 points 1 year ago

Yes

[–] ericjmorey@programming.dev 1 points 1 year ago

So how useful it is in practice?

It can replace the need for docker.

Replit.com uses it for its VM environments. See: https://blog.replit.com/nix

[–] uthredii@programming.dev 0 points 1 year ago* (last edited 1 year ago) (1 children)

So how useful it is in practice?

It's useful for quite a few things in practise:

You can be sure software that is packaged with nix will behave the same on different computers.
You can avoid dependency conflicts.
You can automate some things that would otherwise take multiple (mostly manual steps) on other systems.

This video shows off some of the cool things you can do with nix: https://youtube.com/watch?v=6Le0IbPRzOE&feature=share9

How do updates work?

You update a programming by specifying the latest version of a program in config and rebuilding.

You update the OS by pointing to the channel you want to use and rebuilding.

You can time travel back to a previous state if anything goes wrong.

Can it play Crysis?

I expect so, some people.do use nix for gaming.

[–] msage@programming.dev 0 points 1 year ago (1 children)

You can be sure software {...} will behave the same

never had that issue before, as long as they have the same version and config

avoid dependency conflicts

I have those on Gentoo sometimes, possibly because I overloaded USE too much, but that's not something I have to deal with on Debian/Mint.

You can time travel back to a previous state

wasn't that possible before with snapshotting (btrfs/lvm)?

If it allowed me to avoid systemd, I would be willing to give it a go. Perhaps I will try it in a VM, but it's not going on any baremetal for now.

[–] uthredii@programming.dev -1 points 1 year ago

never had that issue before, as long as they have the same version and config

Then you are very lucky. "It worked on my machine" is a meme for a reason.

wasn’t that possible before with snapshotting (btrfs/lvm)?

I haven't used snapshotting with those before. I guess the difference is that with nix it is done by the package manager by default, with btrfs/lvm you would have to set that up independently (please correct of this is not the case).

[–] keardap@lemmy.selfhost.quest 1 points 1 year ago

Been using it for a few years now, it's freaking amazing.

My laptop died, recovery was: 1. rebuild my system from git 2. load the backup data. Took me about 20 minutes to prepare everything, went on with my day and when I got back to the laptop it was right as I needed it.
I need to target different Python version, with packages and everything, on different systems. Using nix I can a git version of a project to a Python environment, and it just works. Same with other languages.
Rollbacks are epic for experiments.
I can duplicate shared settings between computers, for example, I have a desktop PC and a laptop, both run the same DE, browser, email client, etc, all those goodies are defined from the same file. My server runs no DE, so its configuration file does not load the PC nix file.

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