5 ms·

> "and understand that you are only learning NixOS, it won't help you use anything else" So — for one thing — in my personal case, it helped me at one time whe

by akavel 5y ago

> "and understand that you are only learning NixOS, it won't help you use anything else" So — for one thing — in my personal case, it helped me at one time when I was experimenting with kernel build flags. With the caveat that finding how to change them was (surprise surprise) typically non-trivial in Nix in the first place... so it may be a feeble counterpoint... but still, after I found how to do it, NixOS made rebuilding new OS with different kernel flags absolute breeze, with basically 0 worry if I bork something (I mean, except maybe going to deep hardware params hacking such that would risk fraying some electronics) — I'd always automatically be just one GRUB entry away from a previous working configuration. (Though also useful to have `git commit`ed the previous /etc/configuration.nix from before I made some risky change, so that I could easily go tweaking again from there.)

GekkePrutser 5y ago
This is something that is coming to traditional Linux as well though, with zfs snapshots. I've had it for a long time on FreeBSD. I just snapshot before I do something big. I see the benefit of declarative configuration as an admin at work where we need to set up many systems the same way. For home desktop use I don't really see the point, I don't think it's a tech that fits perfectly in every scenario. Like most technologies there's usecases where its benefits shine and the drawbacks are irrelevant, and others where it's the opposite. For example I often come across software that isn't packaged for my OS and I like to just compile them and try them out without having to do the whole packaging routine.
- akavel 5y ago
  As to "home use", personally I'm successfully keeping my dotfiles & $HOME/bin/ scripts managed with Nix + home-manager. Becomes useful when changing jobs, and also makes it easier to share new config tricks between work & home machine. Regardless if Linux or Mac. edit: in particular, going just Nix (not NixOS) on work machine(s) allows me to fall back to apt-get/brew quickly when a particular tool is not (yet) on Nixpkgs.
- tux1968 5y ago
  > This is something that is coming to traditional Linux as well though, with zfs snapshots. Has there been a change in ZFS licensing? I thought it was always going to remain poorly integrated into the Linux ecosystem.
  - pimeys 5y ago
    You can do the same with btrfs too. I think SuSE already integrates this, and I used to do that with Arch Linux before I started using NixOS.
    - scns 5y ago
      SUSE uses btrfs as the default fs for years. A snapshot is taken before each upgrade automatically.
  - crypt0x 5y ago
    I can ignore the licensing for my personal stuff (and some work might be able to, too) but from a technical perspective I find the SPL translation layer and fs caching overhead much greater pill to swallow. It’s basically bolting on Solaris as a 2nd memory system just for zfs. I really hope this hack is recognized for what it is sooner rather then later…
  - boomboomsubban 5y ago
    No. It's poorly integrated but well maintained in the Linux ecosystem. Certainly usable.
    - Filligree 5y ago
      With the exception of NixOS, with which it's well integrated. The integration is a bit of an oddball, though. Kinda typical... nice to have though!
  - pxc 5y ago
    > I thought it was always going to remain poorly integrated into the Linux ecosystem. Interestingly, NixOS excels at ZFS integration. Because NixOS builds everything from source with transparent binary caching, always upgrades your system as an integral while, and performs upgrades atomically, you'll probably not even notice that ZFS isn't in the mainline kernel as you use it. NixOS will never upgrade your kernel to one that's incompatible with whatever version of ZFS is in the repos, and it'll never leave you in a partially upgraded state where your new kernel is installed, but your new ZFS modules are not— even if you pull the power during an upgrade. ZFS feels very native on NixOS. It's great
- ris 5y ago
  > For home desktop use I don't really see the point Lucky that you don't need to run NixOS as your OS to get a lot of the advantages from it then. I use debian for my boring desktop applications but have Nix available to me for when I need any e.g. development tools.
  - Filligree 5y ago
    This is what I used to think, but after twenty years of running Linux, and at least twice that many reinstalls, I very much appreciate an OS that doesn't eventually bitrot underneath me. "Just install this one package to get CUDA working"... no. If I do that, then in two months when I want to do something else I'll find my OS is no longer capable of being used that way. And in four, when I want this specific version of CUDA working again, I don't remember how. The instructions probably wouldn't work anymore anyway. NixOS allows me to put in down in terms of code, and the code practically never stops working. It's also immortal -- I've never needed to reinstall it. If I did, it'd be painless, but that's only ever happened in case of hardware failure. It's the best part of Nix.
- heavyset_go 5y ago
  > This is something that is coming to traditional Linux as well though, with zfs snapshots. I've had it for a long time on FreeBSD. I just snapshot before I do something big. This has been available on traditional Linux for quite some time with btrfs snapshots.
ochoseis 5y ago
I've had a similar experience with systemd itself. While you could go and read through the systemd docs to understand all of its nooks and crannies, you can actually learn the important bits by reading through the source for NixOS's modules (which are linked directly from https://search.nixos.org/options https://search.nixos.org/options). You start to see patterns of which options they set in the units, and pretty quickly build up the knowledge you need to write your own. This is also aided by the fact that the repository is one giant git repo hosted on GitHub that you can search, clone, tweak, atomically deploy from a local branch. It buys you so much flexibility when experimenting.

by akavel 5y ago

GekkePrutser 5y ago

This is something that is coming to traditional Linux as well though, with zfs snapshots. I've had it for a long time on FreeBSD. I just snapshot before I do something big. I see the benefit of declarative configuration as an admin at work where we need to set up many systems the same way. For home desktop use I don't really see the point, I don't think it's a tech that fits perfectly in every scenario. Like most technologies there's usecases where its benefits shine and the drawbacks are irrelevant, and others where it's the opposite. For example I often come across software that isn't packaged for my OS and I like to just compile them and try them out without having to do the whole packaging routine.

akavel 5y ago
As to "home use", personally I'm successfully keeping my dotfiles & $HOME/bin/ scripts managed with Nix + home-manager. Becomes useful when changing jobs, and also makes it easier to share new config tricks between work & home machine. Regardless if Linux or Mac. edit: in particular, going just Nix (not NixOS) on work machine(s) allows me to fall back to apt-get/brew quickly when a particular tool is not (yet) on Nixpkgs.
tux1968 5y ago
> This is something that is coming to traditional Linux as well though, with zfs snapshots. Has there been a change in ZFS licensing? I thought it was always going to remain poorly integrated into the Linux ecosystem.
- pimeys 5y ago
  You can do the same with btrfs too. I think SuSE already integrates this, and I used to do that with Arch Linux before I started using NixOS.
  - scns 5y ago
    SUSE uses btrfs as the default fs for years. A snapshot is taken before each upgrade automatically.
- crypt0x 5y ago
  I can ignore the licensing for my personal stuff (and some work might be able to, too) but from a technical perspective I find the SPL translation layer and fs caching overhead much greater pill to swallow. It’s basically bolting on Solaris as a 2nd memory system just for zfs. I really hope this hack is recognized for what it is sooner rather then later…
- boomboomsubban 5y ago
  No. It's poorly integrated but well maintained in the Linux ecosystem. Certainly usable.
  - Filligree 5y ago
    With the exception of NixOS, with which it's well integrated. The integration is a bit of an oddball, though. Kinda typical... nice to have though!
- pxc 5y ago
  > I thought it was always going to remain poorly integrated into the Linux ecosystem. Interestingly, NixOS excels at ZFS integration. Because NixOS builds everything from source with transparent binary caching, always upgrades your system as an integral while, and performs upgrades atomically, you'll probably not even notice that ZFS isn't in the mainline kernel as you use it. NixOS will never upgrade your kernel to one that's incompatible with whatever version of ZFS is in the repos, and it'll never leave you in a partially upgraded state where your new kernel is installed, but your new ZFS modules are not— even if you pull the power during an upgrade. ZFS feels very native on NixOS. It's great
ris 5y ago
> For home desktop use I don't really see the point Lucky that you don't need to run NixOS as your OS to get a lot of the advantages from it then. I use debian for my boring desktop applications but have Nix available to me for when I need any e.g. development tools.
- Filligree 5y ago
  This is what I used to think, but after twenty years of running Linux, and at least twice that many reinstalls, I very much appreciate an OS that doesn't eventually bitrot underneath me. "Just install this one package to get CUDA working"... no. If I do that, then in two months when I want to do something else I'll find my OS is no longer capable of being used that way. And in four, when I want this specific version of CUDA working again, I don't remember how. The instructions probably wouldn't work anymore anyway. NixOS allows me to put in down in terms of code, and the code practically never stops working. It's also immortal -- I've never needed to reinstall it. If I did, it'd be painless, but that's only ever happened in case of hardware failure. It's the best part of Nix.
heavyset_go 5y ago
> This is something that is coming to traditional Linux as well though, with zfs snapshots. I've had it for a long time on FreeBSD. I just snapshot before I do something big. This has been available on traditional Linux for quite some time with btrfs snapshots.

ochoseis 5y ago

I've had a similar experience with systemd itself. While you could go and read through the systemd docs to understand all of its nooks and crannies, you can actually learn the important bits by reading through the source for NixOS's modules (which are linked directly from https://search.nixos.org/options https://search.nixos.org/options). You start to see patterns of which options they set in the units, and pretty quickly build up the knowledge you need to write your own. This is also aided by the fact that the repository is one giant git repo hosted on GitHub that you can search, clone, tweak, atomically deploy from a local branch. It buys you so much flexibility when experimenting.