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runit VS NixOS

Compare runit VS NixOS and see what are their differences

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runit logo runit

runit is a cross-platform Unix init scheme with service supervision, a replacement for sysvinit...

NixOS logo NixOS

25 Jun 2014 . All software components in NixOS are installed using the Nix package manager. Packages in Nix are defined using the nix language to create nix expressions.
  • runit Landing page
    Landing page //
    2019-03-14
  • NixOS Landing page
    Landing page //
    2023-09-12

runit features and specs

  • Simplicity
    runit is known for its straightforward and simple design, making it easy to install, configure, and use.
  • Fast Boot Times
    Due to its lightweight nature, runit can significantly speed up system boot times compared to more complex init systems.
  • Service Supervision
    runit provides excellent service supervision capabilities, ensuring reliable and automatic restarting of services in case of failure.
  • Compatibility
    runit is compatible with UNIX-like operating systems and can serve as a drop-in replacement for other init systems.
  • Modular Design
    runit follows a modular approach, separating the init and supervision stages, which provides flexibility and robustness in managing services.

Possible disadvantages of runit

  • Limited Integration
    Compared to systemd, runit has limited integration with other system components, which may lead to less cohesive system management.
  • Smaller Community
    runit has a smaller user and developer community than more popular alternatives, potentially leading to fewer resources and less support.
  • Fewer Features
    While runit is lightweight, it lacks some of the advanced features that more comprehensive init systems like systemd provide.
  • Manual Configuration
    Setting up and configuring runit can require more manual intervention, which might not be as convenient for users accustomed to automated configurations.
  • Limited Ecosystem
    As a less widely adopted init system, there might be limited third-party tools and scripts specifically designed for runit.

NixOS features and specs

  • Reproducibility
    NixOS ensures that the system configuration is entirely reproducible. Every package, configuration file, and system setting is defined in a single, declarative configuration file, enabling easy recreation of the environment on different machines or after clean installs.
  • Atomic Upgrades & Rollbacks
    Upgrades in NixOS are atomic, meaning they either complete successfully or not at all. Additionally, it is easy to rollback to previous configurations if something goes wrong, which adds a significant safety net during system updates.
  • Isolated Environments
    NixOS supports creating isolated development environments, preventing dependency conflicts and allowing developers to work with different versions of packages comfortably.
  • Package Management
    Nix, the package manager of NixOS, allows for the installation of multiple versions of the same software simultaneously without conflicts, facilitating experimentation and development.
  • Declarative Configuration
    All aspects of the NixOS system are configurable using a declarative language, making it easier to understand, share, and reproduce configurations compared to imperative setups.

Possible disadvantages of NixOS

  • Learning Curve
    NixOS and its package manager Nix have a steep learning curve, especially for users who are new to its declarative approach. Mastery requires a willingness to adopt a new mindset and learn new concepts.
  • Smaller Community
    Compared to more mainstream Linux distributions, NixOS has a smaller user and developer community, which can lead to fewer resources, tutorials, and community support options available for problem-solving.
  • Package Availability
    While Nixpkgs is extensive, there are occasions where certain packages may not be available or may not have the latest versions, requiring users to create their own packages or wait for updates.
  • Performance Overheads
    The guarantee of reproducibility and isolation can introduce performance overheads in some scenarios, particularly when dealing with build processes that have not been specifically optimized for Nix.
  • System Configuration Complexity
    The ability to configure everything declaratively can lead to complex and lengthy configuration files, which can be daunting and hard to manage as the complexity of the environment increases.

runit videos

Void Linux: Runit Service Management Basics & Custom Services

More videos:

  • Review - Artix LXQt with Runit - Installation and First Look
  • Review - Look @ antiX 19.2 Runit Edition - What Happened To My Runit?

NixOS videos

First Impression of the NixOS Installation Procedure

More videos:

  • Review - Introduction to NixOS - Brownbag by Geoffrey Huntley
  • Review - NixOS 18.03 - A Configuration-focused GNU+Linux Distro

Category Popularity

0-100% (relative to runit and NixOS)
Log Management
100 100%
0% 0
Front End Package Manager
Monitoring Tools
100 100%
0% 0
Package Manager
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare runit and NixOS

runit Reviews

The Best Retail Management Software of 2021
RunIt is a cloud-based POS suitable for businesses in the sports, footwear, apparel, gift and merchandise sectors. It integrates with Wordpay and Vantiv Integrated Payments to provide credit card and POS processing. Its POS functionality is available on mobile and can be used remotely. Its auto distribution feature offers users different ways of distributing merchandise...
Source: digital.com

NixOS Reviews

The 10 Best Immutable Linux Distributions in 2024
Why it’s on the list: NixOS uses the Nix package manager, which treats packages as isolated from each other. This unique approach to package management virtually eliminates “dependency hell”.

Social recommendations and mentions

Based on our record, NixOS seems to be a lot more popular than runit. While we know about 266 links to NixOS, we've tracked only 9 mentions of runit. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

runit mentions (9)

  • Way too many ways to wait on a child process with a timeout
    Not so much about timeouts, but related in that it is based around managing children processes: The lineage of tools descending from daemontools for service management is worth exploring: daemontools: http://cr.yp.to/daemontools.html runit: https://smarden.org/runit/ s6: https://skarnet.org/software/s6/ dinit: https://davmac.org/projects/dinit/. - Source: Hacker News / 6 months ago
  • S6 – skarnet's small supervision suite
    I personally am a fan of runit https://smarden.org/runit/ But s6 is excellent as well. - Source: Hacker News / 8 months ago
  • OpenRC is a dependency-based init system for Unix-like systems
    How does it compare to Runit[[0] used by Void Linux? [0]http://smarden.org/runit/. - Source: Hacker News / almost 2 years ago
  • SystemD vs Runit. Just a suggestion, not fight.
    Still, I can try to give you a rundown of Runit. Essentially, it's an init system that uses init scripts, but it has a bit more structure to improve on the shortcomings of sysvinit. Much like systemd, it also does service management, although in a much less involved way. Like with sysvinit, the task of logging is left to a separate process, though it has its own logging daemon, if you wish to use it (as logging... Source: about 2 years ago
  • What manages systemd?
    PID 1 is special. It's the init. Instead of System V init, you can use OpenRC, runit, systemd, s6, or others. Source: over 3 years ago
View more

NixOS mentions (266)

  • Show HN: Node.js video tutorials where you can edit and run the code
    I'd love to create some Nix (https://nixos.org/) content. - Source: Hacker News / 11 days ago
  • 20 years of Git. Still weird, still wonderful
    NixOS may end up being "the last OS I ever use" (especially now that gaming is viable on it): https://nixos.org/ Check it out. The whitepaper's a fairly digestible read, too, and may get you excited about the whole concept (which is VERY different from how things are normally done, but ends up giving you guarantees). - Source: Hacker News / 27 days ago
  • Overengineer your CV
    For implementing the themes I have decided to use nix flakes since they allow each theme to specify their own dependencies and which command to run with the resulting JSON from the previous step as input. Another alternative could have been to use docker, but I wanted to learn more about nix. - Source: dev.to / about 2 months ago
  • Easy Development Environments
    One of the most tedious and time-wasting parts of the development process is setting up tooling. For a NodeJS project this requires getting the right Node version, getting the preferred package manager, installing things like a linter, formatter, and sometimes a compiler for TypeScript or other JS-transpiled languages. Well today we are going to talk about using Nix as an SDK/tool manager, and how we can setup... - Source: dev.to / about 2 months ago
  • Ask HN: Who is hiring? (February 2025)
    Zest Dermatology | Remote (USA residents only) | Full-time | Systems Administrator / Software Engineer | https://zesthealth.com Zest is a virtual dermatology clinic that delivers care for chronic eczema and psoriasis with a level of satisfaction and patient outcomes that are unheard of in conventional dermatology. What makes Zest particularly exciting is its value-based care business model, a topic worth... - Source: Hacker News / 3 months ago
View more

What are some alternatives?

When comparing runit and NixOS, you can also consider the following products

systemd - systemd is a replacement for the init daemon for Linux (either System V or BSD-style).

GNU Guix - Like Nix but GNU.

s6 - s6 is a small suite of programs for UNIX, designed for process supervision. It can be used as an init system, or as separate supervision components.

Homebrew - The missing package manager for macOS

sysvinit - Savannah is a central point for development, distribution and maintenance of free software, both GNU and non-GNU.

asdf-vm - An extendable version manager