I hopped from arch (2010-2019) to Nixos (2019-2023). I had my issues with it but being a functional programmer, I really liked the declarative style of configuring your OS. That was until last week. I decided to try out void Linux (musl). I’m happy with it so far.

Why did I switch?

  1. Nix is extremely slow and data intensive (compared to xbps). I mean sometimes 100-1000x or more. I know it is not a fair comparison because nix is doing much more. Even for small tweaks or dependency / toolchain update it’ll download/rebuild all packages. This would mean 3-10GB (or more) download on Nixos for something that is a few KB or MB on xbps.

  2. Everything is noticeably slower. My system used way more CPU and Ram even during idle. CPU was at 1-3% during idle and my battery life was 2 to 3.5h. Xfce idle ram usage was 1.5 GB on Nixos. On Void it’s around 0.5GB. I easily get 5-7h of battery life for my normal usage. It is 10h-12h if I am reading an ebook.

Nix disables a lot of compiler optimisations apparently for reproducibility. Maybe this is the reason?

  1. Just a lot of random bugs. Firefox would sometimes leak memory and hang. I have only 8 GB of ram. WiFi reconnecting all the time randomly. No such issues so far with void.

  2. Of course the abstractions and the language have a learning curve. It’s harder for a beginner to package or do something which is not already exposed as an option. (This wasn’t a big issue for me most of the time.)

For now, I’ll enjoy the speed and simplicity of void. It has less packages compared to nix but I have flatpak if needed. So far, I had to install only Android studio with it.

My verdict is to use Nixos for servers and shared dev environments. For desktop it’s probably not suitable for most.

  • mrhEnglish
    19•5 months ago

    edit: I do feel norawibb’s point, the slippery mutability of Void is something I am a lot less comfortable with than I used to be. Apparently Guix has spoiled me.

    • @7aiOPEnglish
      3•11 months ago

      🎉 Same! I’ve been looking at Ashos (meta distribution) or just using btrfs snapshots to rollback when I break something.

      • mrhEnglish
        7•11 months ago

        Yeah rollbacks are probably the best part of immutable OS’s, but of almost equal importance is reproducible system configuration, which imo only Nix and Guix do well. Neither snapshots nor Silverblue really manage that yet.

        • @7aiOPEnglish
          1•11 months ago

          Yeah. For reproducibility I still use nix. Especially when I have to share my dev environment with a team or to spin up identical servers.

          • @[email protected]English
            1•11 months ago

            Can you give an example in what kind of scenario you would want “identical servers”? In my head that is where tools like ansible come into play…?

            • @7aiOPEnglish
              3•11 months ago

              You can achieve similar results with ansible. But I like nix better. It is reproducible. You can think of it like docker.

              Nix is also declarative and has rollback. Also, nixos-rebuild is idempotent.

            • Chewy
              2•11 months ago

              The great thing about Nix is that it achieves reproducibility with the package manager. Container and Ansible depend on taking a system and documenting steps to bring it to the desired state. This state then might deviate over time (e.g. crashing while updating).

              But yes, for most practical use it probably doesn’t make much of a difference. For me Nix forces me to document what I’m doing, which I might not do for “quick and simple change” on other systems.

      • Chewy
        3•11 months ago

        My problem with snapshots is that sometimes I break something and notice it way later. This accumulated state at one point breaks something (i.e. I break something). With NixOS I’m forced to do things right, which is also annoying and time consuming.

        • @7aiOP
          1•11 months ago

          That’s right. I just rely on intuition to create a snapshot just before I think some operation will potentially break the system. (Along with daily snapshots)

          It’s definitely not as bulletproof and transparent as Nixos. You can see what has changed by doing a diff :)

      • @7aiOPEnglish
        2•11 months ago

        I just wanted something lightweight and fast. It was between alpine (gentoo based), void and artix (arch based). I decided to go for void because it’s new and an independent distro. I’ll try the other two some day.

        • @[email protected]English
          4•11 months ago

          I sense a dislike for systemd. :D Actually didn’t know alpine is gentoo based. Thanks for your insight.

          • Atemu
            6•11 months ago

            It is not. Alpine is independant and uses a ports-like packaging system.

            • @7aiOP
              1•11 months ago

              I was just going off based on its history. It began based on gentoo. (Wikipedia) but yea it is independent now.