Published on Fri May 23 2025

Hey everyone, we are Leona Maroni and Tristan Ross, the release managers of the newest release of NixOS. We are very proud to announce the public availability of NixOS 25.05 "Warbler". NixOS is a Linux distribution. Its underlying package repository Nixpkgs can also be used on other Linux systems and macOS with the Nix package manager. This release will receive bugfixes and security updates for seven months (up until 2025-12-31). The old release 24.11 "Vicuña" is now officially deprecated and will reach its end-of-life and stop receiving security updates after 2025-06-30. NixOS Release Notes ...

Published on Mon Apr 28 2025

The NixOS logo was originally designed by Simon Frankau for Haskell as part of the 2009 Haskell logo contest. Simon kindly gave permission for the design to be used by the NixOS project, and it was made official in November 2009. In 2015, a new version of the logo with a "hexagon design" was created by Tim Cuthbertson and added to the homepage. In March of 2017, it officially superseded the previous logo and was added to the nixos-artwork repository. Over the years, there have been many updates to the logo and repository, including: Converting the logotype to paths, removing the dependency on users having the designated font installed....

Published on Mon Mar 10 2025

On March 4th, 2025, we welcomed a new NixOS Foundation Board — marking the first-ever board rotation under our newly established constitution. Change is always a big step, but we believe this one is for the better! With clearly defined roles and a more structured approach, the Foundation is set up for success in supporting the Nix & NixOS ecosystem. Following a thorough selection process, carefully coordinated with the Steering Committee, the new board members are: President/Chair: Ron Efroni Rotman (continuing role) (@ron) Secretary: Silvan Mosberger (@infinisil) Director of Legal Affairs: Ryan Trinkle (@ryantrinkle) Treasurer: Maximilian Habryka (@lassulus)...

Published on Sat Nov 30 2024

Hello everyone, we are Tristan Ross and Weijia Wang, the release managers for the newest release of NixOS known as NixOS 24.11 Vicuña. We're glad to announce that after the additional week-long delay that we can deliver this stable release of NixOS. NixOS is a Linux distribution, whose set of packages can also be used on other Linux systems and macOS. This release will receive bugfixes and security updates for seven months (up until 2025-06-31). Release manual Highlights...

Published on Tue Nov 05 2024

After successfully using CIVS to tally the 450 ballots cast (56% turnout) on OpaVote, We are hereby concluding this election! We congratulate the first members of the Nix Steering Committee (SC) (ordered alphabetically): @Ericson2314 (2 year term) @fpletz (1 year term) @Gabriella439 (2 year term) @jtojnar (2 year term)...

Published on Mon Sep 16 2024

Some links in this post are only accessible to NixOS org members. As a first step towards a better governance for official Nix projects, we are happy to announce the kick-off of the first Nix Steering Committee election! The Steering Committee will be the primary community leadership body, responsible for steering the official Nix projects -- organisationally, socially, and technically. This includes making decisions over what is official, managing teams, approving NixOS Foundation policies relevant for the community, being the final escalation point, and more as detailed in the Nix Governance Constitution....

Published on Sun Jul 21 2024

Initially published by petites singularités. English translation provided by OW2. If you want to sign the letter, please re-publish the original letter on your website and add to the list of signatories. Since 2020, Next Generation Internet (NGI) programmes, part of European Commission's Horizon programme, fund free software in Europe using a cascade funding mechanism (see for example NLnet's calls). This year, according to the Horizon Europe working draft detailing funding programmes for 2025, we notice that Next Generation Internet is not mentioned any more as part of Cluster 4. NGI programmes have shown their strength and importance to supporting the European software infrastructure, as a generic funding instrument to fund digital commons and ensure their long-term sustainability. We find this transformation incomprehensible, moreover when NGI has proven efficient and economical to support free software as a whole, from the smallest to the most established initiatives. This ecosystem diversity backs the strength of European technological innovation, and maintaining the NGI initiative to provide structural support to software projects at the heart of worldwide innovation is key to enforce the sovereignty of a European infrastructure. Contrary to common perception, technical innovations often originate from European rather than North American programming communities, and are mostly initiated by small-scaled organizations. Previous Cluster 4 allocated 27 million euros to: "Human centric Internet aligned with values and principles commonly shared in Europe" ; "A flourishing internet, based on common building blocks created within NGI, that enables better control of our digital life" ;...

Published on Sat Jul 13 2024

We're happy to announce that NixCon 2024, will take place October 25-27 2024 in Berlin For more information, see the NixCon 2024 website. And please consider submitting a talk! Follow the discussion on discourse: NixCon Announcement, CFP Announcement ...

Published on Fri May 31 2024

Hey everyone, we are Weijia Wang and Jörg Thalheim, the release managers for this stable release and we are very proud to announce the public availability of NixOS 24.05 “Uakari”. NixOS is a Linux distribution, whose set of packages can also be used on other Linux systems and macOS. This release will receive bugfixes and security updates for seven months (up until 2024-12-31). Release manual Highlights...

Published on Wed Nov 29 2023

Hey everyone, we are figsoda and Ryan Lahfa, the release managers for this stable release and we are very proud to announce the public availability of NixOS 23.11 “Tapir”. This release will receive bugfixes and security updates for seven months (up until 2024-06-30). Release manual NixOS breaking changes New NixOS services...

Published on Wed May 31 2023

Hey everyone, we are Ryan Lahfa and Martin Weinelt, the release managers for this stable release and we are very proud to announce the public availability of NixOS 23.05 “Stoat”. This release will receive bugfixes and security updates for seven months (up until 2023-12-31). Release manual Highlights New Services...

Published on Sat Mar 04 2023

This is the first in a new series of posts called "Tales from Nixpkgs" where we examine Nixpkgs commits to understand how this ecosystem works and provide a bit of visibility into the process. This also gives us a chance to show appreciation for the maintainers and perhaps also uncover interesting stories along the way. Let's take a look at a randomly picked commit from the last year of Nixpkgs: git log --pretty=oneline --since 1y | shuf | head -n1 | cut -f1 -d' ' | xargs git show commit 785bafc33818503172c7eecb60af711d794195b3 Merge: e7d00dfbd39 1e69e5c4280 Author: Fabian Affolter <mail@fabian-affolter.ch> Date: Fri Mar 3 15:05:51 2023 +0100 ...

Published on Thu Dec 01 2022

Hey everyone, we are Martin Weinelt and Janne Heß, the release managers for this stable release and we are very proud to announce the public availability of NixOS 22.11 “Raccoon”. This release will receive bugfixes and security updates for seven months (up until 2023-06-30). Release manual Highlights Internal changes...

Published on Fri Aug 12 2022

72 hours out. A bead of sweat slides from your brow, falls to the marred chassis of your local build server, and sizzles into mist, leaving a scant salt stain to tell the tale. It’s the start of the hottest Summer of Nix on record, and you have three days to research, provision, configure, and deploy. With or without you, this lecture is going live. The deadline was 19 July, 2022; at five o’clock on that glistening Tuesday afternoon, one Eelco Dolstra – a living legend to those who understand – would take to the webcam from the verdant city of Utrecht to deliver a highly anticipated slice of fresh perspective on his now-19-year-old brainchild, Nix. It was the inaugural event in the premier Summer of Nix (SoN) Public Lecture Series. The hype was real, but so was our predicament: no self-hosted livestreaming infrastructure was yet in place. Would we simply fall back on the usual gatekeeper platforms, surrendering control of the narrative and feeding our own to corporate leviathans in a vacuum of moral agency? The ubiquity of these platforms suggests that most would.[^ubiquity] This, however, is SoN, and we aren’t most. Defying norms of defeatism and manufactured consent, we dare to declare a world of configurability. We celebrate that self-hosting empowers us to maintain ownership of both our content and its presentation, allowing us to introduce to our audience – our community – a way to engage with said content free from third-party influence. Note that our solidarity is no coincidence; SoN begins with a contractual agreement between each participant and Eelco himself to uphold both NGI Zero’s aim to contribute to an open internet and the ACM Code of Ethics and Professional Conduct, which emphasizes among other points the importance of respecting privacy. Needless to say, the prospect of streaming Eelco’s lecture exclusively to closed-source, centralized, and infamously privacy-disrespecting services was an irony too plain to ignore. Fortunately, infrastructural improvement is a fundamental objective of the program, and Nix is the definitive tool for the job. In short, the Public Lecture Series livestreaming infrastructure was a natural first target. Time was not on our side, but good people were: The NixOS Foundation was at the ready for server provisioning and DNS management....

Published on Thu Jul 28 2022

During the COVID-19 pandemic, video conferencing turned out to be an invaluable tool for online collaboration. While many used proprietary tools for this, there is one proven free and open source video conferencing tool that also gained much traction and stayed popular: Jitsi Meet Primarily known for its publicly available service meet.jit.si,...

Published on Mon May 30 2022

Hey everyone, I'm Janne Heß, the release manager for 22.05. As promised, the latest stable release is here: NixOS 22.05 “Quokka”. Release manual Highlights New Services Backward Incompatibilities...

Published on Thu Apr 21 2022

We're pleased to announce the availability of Nix 2.8.0. It will be available from NixOS - Getting Nix / NixOS. Here are the release notes: New experimental command: nix fmt, which applies a formatter defined by the formatter.<system> flake output to the Nix expressions in a flake. Various Nix commands can now read expressions from standard input using --file -....

Published on Mon Apr 04 2022

Summer of Nix 2022 will happen from July 18th to September 30th! Applications are open here from now until May 15th!. Following the excitement of Summer of Nix 2021 (more in last year’s report, I am happy to announce that the European Commission, NLNet and the NixOS Foundation have granted enough budget to organize another community event this year. After some brainstorming sessions I am excited to share how we (an organization committee of ~8 people now) would like to organize this event....

Published on Mon Mar 14 2022

We're pleased to announce the availability of Nix 2.7.0. It will be available from NixOS - Getting Nix / NixOS. Here are the release notes: Nix will now make some helpful suggestions when you mistype something on the command line. For instance, if you type nix build nixpkgs#thunderbrd, it will suggest thunderbird. A number of “default” flake output attributes have been renamed. These are:...

Published on Tue Mar 01 2022

The NixOS Marketing Team is pleased to announce the first offical NixOS Community Survey. Please take 5-10 minutes to complete it. Since the Nix community has been growing faster and larger every month, it's gotten harder to understand who makes up the community and what everyone cares about. So we're conducting this survey to improve our understanding of those questions. We hope to use your responses to develop Nix, NixOS, and Nixpkgs to match your needs and come up with new ideas for growing and serving the community. And we'll publish major findings on Discourse and nixos.org. All the questions are optional, and all responses are automatically anonymized. We will NOT collect your name, phone number, GitHub handle, IP address, or any other identifying information. The questions in the survey cover: Your background (e.g. What region of the world are you from?) The projects you use in the ecosystem (e.g. Are you using NixOS?) How you use the projects (e.g. Do you use Nix in production servers?)...

Published on Wed Feb 23 2022

Happy to announce that the Summer of Nix 2021 report is out. This report explains in detail the motivation behind Summer of Nix, and how it was organized in 2022. If you have comments or questions, don't hesitate to reach out to summer@nixos.org. ...

Published on Wed Jan 26 2022

We're pleased to announce the availability of Nix 2.6.0. Instructions how to install Nix on different platforms can be found on the download page. Here are the release notes: New builtin function builtins.zipAttrsWith with the same functionality as lib.zipAttrsWith from Nixpkgs, but much more efficient. The Nix CLI now searches for a flake.nix up until the root of the current Git repository or a filesystem boundary rather than just in the current directory. The TOML parser used by builtins.fromTOML has been replaced by a more compliant one. Added :st/:show-trace commands to nix repl, which are used to set or toggle display of error traces....

Published on Tue Nov 30 2021

Hey everyone, we're Timothy DeHerrera and Tom Bereknyei, the release managers for 21.11. As promised, the latest stable release is here: NixOS 21.11 “Porcupine”. Release manual Highlights New Services Backward Incompatibilities...

Published on Fri Oct 01 2021

This is a record of my time in the Summer of Nix holding my breath and diving into the depths of Nix to gain some Perls of wisdom. Going through the issues assigned to my team I came across the the package for OpenFoodFacts a collaborative database that collects and provides open data on 1 million food products from around the world and counting! Not knowing what we are eating seems like a strange thing. But really, how much do we know what goes into those vacuum packed bags that we open and consume daily? OpenFoodFacts, I see your quote and raise you a Newman! We are living in a world today where lemonade is made from artificial flavors and furniture polish is made from real lemons....

Published on Mon Sep 06 2021

Makes A DevSecOps framework powered by Nix and the NixOS module system. Our goal is to help people setup a powerful CI/CD system in just a few steps, in any provider,...

Published on Tue Jul 20 2021

Rumor was already out but now we announce it officially: we are organizing a big hiring event on October 27th where Summer of Nix participants and applicants can meet companies that use it. Participation is free but places are limited for organizational reasons to Summer of Nix participants and applicants for now. If you like to know more, send us a mail at summer@nixos.org. ...

Published on Tue Jun 08 2021

NixOS 21.05 released! Jonathan Ringer, release manager, announces NixOS 21.05 release with 1745 contributors in 33474 commits. ...

Published on Wed Jun 02 2021

Thanks a lot for your interest in the Summer of Nix program! We've done more than a hundred interviews in two months, it's been thrilling to see so much excitement over this program. We are currently in the process of selecting participants and making the teams: stay tuned! ...

Published on Tue Jun 01 2021

Hey everyone, I'm Jonathan Ringer, the release manager for 21.05. As promised, the latest stable release is here: NixOS 21.05 “Okapi”. Release manual Highlights New Services Backward Incompatibilities...

Published on Fri Apr 09 2021

RFC 0085 FCP NixOS Release Stabilization: ZHF on master, new timeline RFC 0085 has been accepted! ...

Published on Tue Feb 23 2021

Introducing flox - Nix for simplicity and scale flox makes it easy to build software or manage development environments with Nix at any scale. ...

Published on Thu Jan 21 2021

RFC 0080 Change NixOS releases to YY.05,YY.11 accepted The next NixOS stable release will be 21.05. ...

Published on Fri Jan 01 2021

deadnix Finds and removes unused code in .nix files. ...

Published on Fri Nov 27 2020

Announcing Nixpkgs Database A database and search engine for the entire history of each package at Nixpkgs. ...

Published on Tue Oct 27 2020

Hey everyone, I'm Jonathan Ringer, one of the release managers for 20.09. As promised, the latest stable release is here: NixOS 20.09 “Nightingale” ✨. Release manual Highlights New Services Backward Incompatibilities...

Published on Mon Oct 12 2020

NixCon 2020 Call-for-Participation is open! Conference dates: Oct. 16th – 18th, 2020. Live streaming on 2020.nixcon.org ...

Published on Wed Aug 05 2020

NixOS | Installation and First Impressions Why IHP is Using The Nix Package Manager...

Published on Mon Jun 29 2020

Nix error messages proposal: phase 2, PR 1 merged! Nearly every C++ file in the repo was touched! This will be the biggest PR, by far, for this project. Getting this in is a major feat! Next up, I'm looking forward to finishing out this phase with showing the lines of code for errors,...

Published on Wed May 27 2020

Nix 2.3.5 release Long awaited support for macOS Catalina, see the manual A bunch of options to invoke installer (pass --help to see what's there)...

Published on Fri Apr 24 2020

NixOS 20.03 was released NixOS 20.03 “Markhor” had 1014 people contribute 21597 contributions. ...

Published on Mon Apr 20 2020

Hey everyone, I am worldofpeace, one of the release managers for 20.03. As promised, the most glittered stable release is here: NixOS 20.03 “Markhor” ✨. Release notes Upgrade instructions Image downloads ...

Published on Wed Mar 18 2020

Introducing nixbuild.net nixbuild.net is nix build as a service, allowing you to easily run distributed builds without having to setup, scale and maintain build servers. ...

Published on Thu Feb 06 2020

nix-simple-deploy A Rust rewrite of unmaintained nix-deploy. Any feedback appreciated! cached-nix-shell: Instant startup time for nix-shell...

Published on Fri Jan 10 2020

Nix Notes The Nix Notes is a collection of short notes about Nix, each contributing to the same virtual machine image. The notes show how to deploy the image to Digital Ocean, update the running virtual machine without recreating it, and more....

Published on Wed Nov 13 2019

Launching Hercules CI Announcing general availability of continuous integration specialized for Nix projects. Hercules CI Agent 0.6.1...

Published on Thu Oct 10 2019

NixOS 19.09 released ociTools in NixOS Katharina explains her recently merged Open Container Initiative support in NixOS....

Published on Wed Oct 09 2019

NixOS 19.09 “Loris” has been released, the twelfth stable release branch. See the release notes for details. You can get NixOS 19.09 ISOs and VirtualBox appliances from the download page. For information on how to upgrade from older release branches to 19.09, check out the manual section on upgrading. ...

Published on Wed Sep 04 2019

One-page Nix expression language overview Vincent wrote a one-page introduction to Nix language, covering language features you'll most likely encounter from day one. ...

Published on Wed Jul 31 2019

nix is now easier to bootstrap on Linux distributions without previous nix installation. Non-NixOS users are encouraged to try and report whether the improved autoconf checks make it easier to build it from source. static-haskell-nix started a crowd-funding on OpenCollective during ZuriHac to get its own dedicated Hetzner build server. Amazingly, the funding goal was reached within only 4 days!...

Published on Thu Jun 27 2019

A set of patches to build Redox on NixOS An attempt to embrace Nix instead of constantly working around the limitations to build Redox OS. The ultra optimistic long-term goal is to be a competing alternative to the GNU make build system the project currently uses, to make Redox builds reproducible and...

Published on Wed May 15 2019

autobake: Create build recipes through automated trial and error GNU Guix 1.0.0 released ...

Published on Wed May 01 2019

Setting up a C++ project environment with Nix Jacek explans step by step how to package a simple C++ project and how to build against a matrix of different dependencies. ...

Published on Wed Apr 17 2019

The IPFS team made package managers their top priority for 2019 There might be progress on its Nix integration. Statically linked Haskell executables and optionally Docker images or Debian packages...

Published on Wed Apr 10 2019

NixOS 19.03 “Koi” has been released, the eleventh stable release branch. See the release notes for details. You can get NixOS 19.03 ISOs and VirtualBox appliances from the download page. For information on how to upgrade from older release branches to 19.03, check out the manual section on upgrading. ...

Published on Wed Apr 03 2019

NIXML: nix + YAML for easy reproducible environments Announcing the new Golang infrastructure: buildGoModule ...

Published on Wed Mar 13 2019

Announcing Cachix private binary caches and 0.2.0 release You can now share an unlimited number of binary caches in your group of developers, protected from public use with just a few clicks. ...

Published on Wed Feb 27 2019

Moving from Homebrew to Nix Package Manager Salar wrote a step-by-step tutorial how to migrate from homebrew to Nix. nixos/printers: declarative configuration...

Published on Wed Feb 20 2019

NixOS is bootable via netboot.xyz Try out NixOS, without having to even create a USB key. Easy dependency management for Nix projects...

Published on Thu Feb 07 2019

Nix is now available in Debian NixOS 19.03 feature freeze ...

Published on Thu Jan 17 2019

nix-instantiate introduction A polite introduction to use nix-instantiate and the NixOS module system to render JSON. TerraNix...

Published on Wed Dec 19 2018

Gnome 3.30 with wayland support has hit master To launch a wayland session simply use GDM or SDDM and select the gnome session. Select gnome-xorg to run an X11 session. If you encounter a bug please cc @hedning on github. Fast Docker Compose 'deployments' for development with Arion...

Published on Tue Dec 04 2018

NixOS 19.03 will leverage multiple cores automatically by default for builds and Nix 2.2 will have the sandbox enabled by default on Linux ...

Published on Fri Nov 16 2018

NixCon 2018 videos of talks Eris: A simple binary cache server ...

Published on Wed Oct 10 2018

cache.nixos.org moved from Amazon to Fastly. A very hacky proof of concept of a lisp in Nix NixOS 18.09 Jellyfish...

Published on Sat Oct 06 2018

NixOS 18.09 “Jellyfish” has been released, the tenth stable release branch. See the release notes for details. You can get NixOS 18.09 ISOs and VirtualBox appliances from the download page. For information on how to upgrade from older release branches to 18.09, check out the manual section on upgrading. ...

Published on Thu Oct 04 2018

We are happy to announce that we have moved our binary cache to Fastly. Fastly is a big supporter of open source projects and now NixOS is one of them! Fastly provides us with CDN capability, which previously was running on AWS CloudFront. Big thanks go to Fastly, in particular Tom Denniston and Elaine Greenberg, our friends at Infor and Packet.com and Graham Christensen for making this possible. ...

Published on Wed Oct 03 2018

Exploring Nix & Haskell Part 1: Project Setup This is the first of a series of posts, with the overarching goal of building up a deterministic Haskell development environment using Nix, including a modern IDE experience and any tooling built-in....

Published on Wed Sep 26 2018

The NixCon 2018 sold out and program is now live Help make the Nix ecosystem's docs better...

Published on Wed Sep 05 2018

Nix overlay to program and use a tomu U2F token #33686: New installer...

Published on Sun Sep 02 2018

Nix 2.1 has been released. See the release notes for a list of changes and new features. ...

Published on Wed Aug 22 2018

NixOS in production Gabriel Gonzalez shows how to do a remote [nixos-rebuild switch]{.title-ref} while pinning nixpkgs ...

Published on Wed Aug 15 2018

An EPYC NixOS build farm Graham explores and benchmarks an AMD EPYC build server against a differently incredible build server, finding the EPYC's builds are much faster across the board....

Published on Tue Aug 14 2018

The nix-devel mailing list is now replaced by our discourse forum instance which is also usable by email: discourse.nixos.org. ...

Published on Thu Aug 02 2018

NixOS 18.09 JellyFish to be forked off in a month Whole Nix community would like to specifically call out a massive thank-you to vcunat and samueldr for being 18.09's release managers, an important and central role in each release. Thank you...

Published on Wed Jul 25 2018

NixOS weekly project is rebooting, expect a newsletter every Wednesday in the morning (European timezone). You're more than welcome to submit new items with a short description on latest pull request Domen ...

Published on Mon May 21 2018

We're happy to announce that NixCon 2018, the third Nix Conference, will take place October 25-27 2018 in London For more information, see the NixCon 2018 website. And please consider submitting a talk! ...

Published on Wed Apr 04 2018

NixOS 18.03 “Impala” has been released, the ninth stable release branch. See the release notes for details. You can get NixOS 18.03 ISOs and VirtualBox appliances from the download page. For information on how to upgrade from older release branches to 18.03, check out the manual section on upgrading. ...

Published on Mon Feb 26 2018

Welcome to another edition of NixOS "Weekly" Newsletter! Thank you to everyone who helped make this happen. Nix 2.0 has been released ...

Published on Thu Feb 22 2018

Nix 2.0 has been released. See the release notes for a list of changes and new features. ...

Published on Thu Feb 01 2018

Welcome to another edition of NixOS "Weekly" News -- we're still working on that weekly bit and I've half a mind to amend the quote to add "monthly before weekly". Let me start by addressing everyone who helped put this edition together: By creating the content and helping collect items, you make the newsletter possible. Thank you. Contributions for future editions are more than welcome. One way to help is by editing a release; we've added an Editor's...

Published on Mon Jan 08 2018

The phoenix is a long-lived fiery bird that is present in many different mythologies from around the world. When a phoenix "dies", it does so by combustion and is reborn of the ashes left behind. It rises from its own ashes, in the freshness of youth, to live through another cycle of years. So in a sense, it never truly dies, but regenerates itself and lives forever. Just like this weekly newsletter. Welcome to the 2018 NixOS "Weekly" newsletter. We are back and hope to produce more of them this year then we did last...

Published on Mon Oct 02 2017

NixOS 17.09 “Hummingbird” has been released, the eigth stable release branch. See the release notes for details. You can get NixOS 17.09 ISOs and VirtualBox appliances from the download page. For information on how to upgrade from older release branches to 17.09, check out the manual section on upgrading. ...

Published on Wed Jul 12 2017

The nix-dev mailing list has moved to nix-devel on Google Groups. ...

Published on Sun Jun 18 2017

We're happy to announce that NixCon 2017, the second Nix Conference, will take place October 28–31 2017 in Munich For more information, see the NixCon 2017 website. And please consider submitting a talk! ...

Published on Fri May 19 2017

Welcome to another edition of NixOS Weekly. Major announcements include NixCon 2017 and the old wiki migration. This edition adds a new Tooling section for possibly useful Nix-related tools in addition to News, Jobs, Reading, and Events. NixCon 2017 October 28-31, Munich....

Published on Tue May 02 2017

A few months ago a proposal to define improvements process (nixos/rfcs) was announced. While many contributions to Nix and NixOS related projects fits into GitHub pull requests model, doing a substantial change requires more involvement from the community. Two months later we can see that NixOS community is picking up on the process and RFCs are starting to show up each week. ...

Published on Fri Apr 14 2017

Or in other words: no more Perl in Nix! Shea Levy's last branch for his long-ongoing work to remove Perl from the Nix tool has finally been merged NixOS on Packet.net Over the past several months, Graham Christensen (grahamc),...

Published on Mon Apr 03 2017

The 17.03 "Gorilla" release has been tagged! There are too many good things in this release to pick favourites. I refer you to the release notes instead. Some fun stats: ...

Published on Fri Mar 31 2017

NixOS 17.03 “Gorilla” has been released, the seventh stable release branch. See the release notes for details. You can get NixOS 17.03 ISOs and VirtualBox appliances from the download page. For information on how to upgrade from older release branches to 17.03, check out the manual section on upgrading. ...

Published on Mon Mar 13 2017

Nix, NixOS and nixpkgs are all moving ahead at good speed. The 17.03 milestone is more than 50% complete, and we merged 144 pull requests for nixpkgs just in the last seven days. The NixOS 17.03 beta...

Published on Wed Feb 22 2017

Another two weeks have passed and it is time for our summary. A new section Questions was added to the newsletter. The intention for this new section is that it is going to expose some of the questions that happen in the past. We hope that none of the questions will be left unanswered. Sometimes we forget just how awesome Nix / NixOS is and we take its capabilities for granted. It is important that we remind ourself from time to time why are we using it, via reddit - In...

Published on Mon Feb 06 2017

Let us together review what happened in NixOS community in last 2 weeks. We are always looking to improve. Let us know how we can do better. Many of you are not aware, but you can easily subscribe and help triage tickets and pull requests in NixOS/nixpkgs...

Published on Mon Jan 23 2017

Welcome to the first edition of NixOS weekly. We will do our best to release this newsletter every second week. If there is something you think we could improve, please let us know. NixOS 17.03 release manager...

Published on Mon Oct 03 2016

NixOS 16.09 “Flounder” has been released, the sixth stable release branch. See the release notes for details. You can get NixOS 16.09 ISOs and VirtualBox appliances from the download page. For information on how to upgrade from older release branches to 16.09, check out the manual section on upgrading. ...

Published on Wed Jul 20 2016

NixOps 1.4 has been released. This release contains contains many nice new features. See the manual for details. ...

Published on Sun May 01 2016

NixOS 16.03 “Emu” has been released, the fifth stable release branch. See the release notes for details. You can get NixOS 16.03 ISOs and VirtualBox appliances from the download page. For information on how to upgrade from older release branches to 16.03, check out the manual section on upgrading. ...

Published on Fri Feb 19 2016

Nix 1.11 has been released. See the release notes for a list of changes and new features. ...

Published on Fri Oct 30 2015

NixOS 15.09 “Dingo” has been released, the fourth stable release branch. See the release notes for details. You can get NixOS 15.09 ISOs and VirtualBox appliances from the download page. For information on how to upgrade from older release branches to 15.09, check out the manual section on upgrading. ...

Published on Sat Oct 03 2015

Nix 1.10 has been released. See the release notes for a list of changes and new features. ...

Published on Thu Sep 03 2015

We're happy to announce that NixCon 2015, the first Nix Conference, will take place on November 14—15th 2015 in Berlin. For more information, see the NixCon website. And please consider submitting a talk! ...

Published on Sun Aug 09 2015

The NixOS Foundation was started to improve our ability to maintain and extend the infrastructure used by the Nix related projects. If you would like to support us, please go here and donate some money! ...

Published on Sun Jul 12 2015

Nix 1.9 has been released. See the release notes for a list of changes and new features. ...

Published on Fri Jan 30 2015

NixOS 14.12 “Caterpillar” has been released, the third stable release branch. It brings Linux 3.14, systemd 217, Glibc 2.20, KDE 4.14.1, and much more. See the release notes for details. You can get NixOS 14.12 ISOs and VirtualBox appliances from the download page. For information on how to upgrade from older release branches to 14.12, check out the manual section on upgrading. ...

Published on Wed Jan 14 2015

Nix 1.8 has been released. See the release notes for a list of changes and new features. ...

Published on Sat Aug 30 2014

We’re having a NixOS sprint at the Kiberpipa hackerspace in Ljubljana, Slovenia, on August 23—27. Joining is free! For more information and to register, please go to the sprint page. ...

Published on Fri May 30 2014

NixOS 14.04 “Baboon” has been released, the second stable release branch. It brings Linux 3.12, systemd 212, GCC 4.8, Glibc 2.19, KDE 4.12, light-weight NixOS containers, and much more. See the release notes for details. You can get NixOS 14.04 ISOs and VirtualBox appliances from the download page. For information on how to upgrade a 13.10 system to 14.04, check out the manual section on upgrading. ...

Published on Fri May 30 2014

NixOps 1.2 has been released. This release contains contains many nice new features. See the manual for details. ...

Published on Sun May 11 2014

Nix 1.7 has been released. See the release notes for a list of new features. ...

Published on Fri May 09 2014

A serious security vulnerability has been discovered in OpenSSL. All stable NixOS releases prior to version 13.10.35708.15a465c are vulnerable. (You can see your current version by running nixos-version.) To upgrade to the latest NixOS version, run nixos-rebuild switch --upgrade. You can verify whether you are safe by running $ nix-store -qR /run/current-system | grep openssl If this shows any OpenSSL version prior to 1.0.1g, you may be vulnerable. ...

Published on Sun Mar 02 2014

Domen Kožar gave a talk at FOSDEM about NixOS (video). Also, Ludovic Courtès gave a talk on Guix, the Nix- and Guile-based package manager. ...

Published on Fri Feb 21 2014

The stdenv-updates branch has been merged into the master branch of Nixpkgs. The main change are that brings is that Nixpkgs/NixOS are now based on GCC 4.8 and Glibc 2.18, in addition to many smaller updates. ...

Published on Sun Dec 01 2013

We have released NixOS 13.10, the first stable branch of NixOS. Its goal is to provide a safe branch for production environments that need bug fixes and security updates, but not the potentially destabilising changes that sometimes occur on the unstable branch. You can get NixOS 13.10 ISOs and VirtualBox appliances from the download page. See the announcement for more information. For information on how to switch an existing NixOS machine from the unstable channel to 13.10, check out the manual section on upgrading. ...

Published on Thu Nov 28 2013

Nix 1.6.1 has been released. This is primarily a bug fix release but has some minor new features. See the release notes for details. ...

Published on Sun Nov 10 2013

The NixOS Git tree has been merged into the Nixpkgs tree in order to simplify development. The sources now live in the nixos subdirectory of the Nixpkgs repository on GitHub. See the announcement for more information. ...

Published on Sat Nov 02 2013

NixOps 1.1.1 has been released. This release consists mostly of minor bugfixes. See the manual for details. ...

Published on Thu Oct 10 2013

Nix 1.6 has been released. See the release notes for details. ...

Published on Wed Oct 09 2013

NixOps 1.1 has been released. This release brings a backend for Hetzner, a German data center provider, support for EC2 spot instances and some minor bugfixes. See the manual for details. ...

Published on Thu Aug 15 2013

A sprint focused on NixOS and Kotti will be held 22-26 July 2013 in Lokve, Slovenia. It is organised by Termitnjak and sponsored by LogicBlox. ...

Published on Sun Aug 11 2013

NixOps 1.0.1 has been released, a minor bug fix release. See the manual for details. ...

Published on Mon Aug 05 2013

Domen Kožar gave a presentation at EuroPython 2013: “NixOS Operating System: Declarative Configuration Distribution”. ...

Published on Thu Jul 25 2013

NixOps 1.0 has been released, the inaugural release of the NixOS cloud deployment tool. See the announcement and the manual for details. ...

Published on Wed Jul 17 2013

Nix 1.5.3 has been released. This is primarily a bug fix release. See the release notes for details. ...

Published on Wed Jul 03 2013

Today Sander van der Burg successfully defended his PhD thesis entitled A Reference Architecture for Distributed Software Deployment! It describes (among other things) Disnix, a system for deployment of service-oriented architectures. ...

Published on Thu Jun 13 2013

Nix 1.5.2 has been released. This is a bug fix release. ...

Published on Thu Mar 28 2013

Nix 1.5.1 has been released. It fixes a regression introduced in Nix 1.4. See the release notes for details. ...

Published on Tue Mar 26 2013

Nix 1.4 has been released. This is primarily a bug fix release that addresses a security problem in multi-user mode. See the release notes for details. For installation information, see the manual. ...

Published on Thu Feb 21 2013

NixOS has switched from Upstart to systemd! Systemd brings many advantages such as better dependency management, socket-based activation of services, per-service logging, cgroup-based process management, and much more. (Read the announcement.) ...

Published on Tue Feb 05 2013

Nix 1.3 has been released. This is primarily a bug fix release. See the release notes for details. For installation information, see the manual. ...

Published on Sun Jan 06 2013

Nix 1.2 has been released. See the release notes for details. For installation information, see the manual. ...

Published on Sat Aug 18 2012

Nix 1.1 has been released. See the release notes for details. For installation information, see the manual. ...

Published on Sun Jun 24 2012

Our continuous build system, Hydra, now produces binary tarball distributions of Nix for Mac OS X (Darwin), FreeBSD and Linux. The tarballs contain all dependencies of Nix, making it a lot easier to install Nix on those platforms. To install, download a binary tarball, unpack it in the root directory, then run nix-finish-install. See the manual for more information. ...

Published on Mon Jun 11 2012

After almost two years of development, Nix 1.0 has been released. See the release notes for an overview of the most important improvements. For installation information, see the manual. ...

Published on Wed Dec 07 2011

PatchELF 0.6 has been released. Apart from some bug fixes, it adds support for executables produced by the Gold linker. See the README for details. ...

Published on Sat Dec 03 2011

Ludovic Courtès gave a talk on Hydra at Inria (which has its own Hydra instance for building Inria software) entitled “Hydra: continuous integration for demanding people”. ...

Published on Mon Nov 28 2011

The NixOS project is (slowly) migrating from Subversion to Git! The master repositories will be hosted in the NixOS organization on GitHub. For the moment, just a few subprojects have been migrated, such as Hydra and Charon. Thanks to Tianyi Cui for donating the NixOS GitHub organization. ...

Published on Fri Oct 14 2011

The nix-dev mailing list has moved. The address is now nix-dev@lists.science.uu.nl (web interface). ...

Published on Sat Mar 05 2011

Sander van der Burg gave a talk about NixOS at the CrossDistro track of FOSDEM (video, slides). ...

Published on Sat Sep 18 2010

The paper “Automating System Tests Using Declarative Virtual Machines” (by Sander van der Burg and Eelco Dolstra) has been accepted for presentation at the 21st IEEE International Symposium on Software Reliability Engineering (ISSRE 2010). It describes how system tests with complex requirements on the environment (such as remote machines, network topologies, system services or root privileges) can be written succinctly using declarative specifications of the machines needed by the test environment. From these specifications we can automatically instantiate (networks of) virtual machines. This is what we use for automated regression testing of NixOS itself. A draft of the paper is available. ...

Published on Sat Sep 18 2010

NixOS now supports Xfce, a modern, light-weight desktop environment. It can be enabled by setting the NixOS configuration value services.xserver.desktopManager.xfce.enable to true. (Screenshot) ...

Published on Fri Sep 17 2010

Nix 0.16 has been released, featuring a much faster evaluator and support for configurable parallelism inside builders. See the release notes for details. For installation information, see the manual. ...

Published on Mon Aug 09 2010

Ludovic Courtès gave a talk about Nix and NixOS at the Libre Software Meeting in Bordeaux, entitled “NixOS: The Only Functional GNU/Linux Distribution” (slides). ...

Published on Sat Apr 17 2010

Nix 0.15 has been released. This is a bug fix release. See the release notes for details. For installation information, see the manual. ...

Published on Thu Mar 04 2010

Nix 0.14 has been released. This is primarily a bug fix release. See the release notes for details. For installation information, see the manual. ...

Published on Fri Dec 25 2009

Long overdue, the Nix project finally has a logo! The logo was originally created by Simon Frankau for the Haskell logo competition, who kindly gave us permission to use it for the Nix project. (The snowflake motif is even more appropriate for Nix, because nix is Latin for snow.) Any further modifications are entirely our fault. ...

Published on Sat Dec 05 2009

Nix 0.13 has been released. This is mostly a bug fix release, although it also adds some new language features. See the release notes for details. For installation information, see the manual. ...

Published on Sun Jul 26 2009

LWN.net has an article about NixOS written by Koen Vervloesem. ...

Published on Sun May 24 2009

Nixpkgs 0.12 has been released. See the release notes for details. Meanwhile, the Nixpkgs trunk has been updated to GCC 4.3.3, Glibc 2.9 and X.org 7.4. ...

Published on Thu May 21 2009

Lluís Batlle has updated OpenOffice.org in Nixpkgs to 3.0.1 (screenshot). ...

Published on Thu May 07 2009

We now have a fairly complete set of KDE 4.2 packages in Nixpkgs and NixOS. Previously we had KDE 3.5, but it was rather incomplete: just kdelibs and kdebase. Now we have all that desktop goodness, such as kdemultimedia, kdenetwork and kdegames. You can enable KDE 4 in NixOS by setting the services.xserver.sessionType option to kde4. Thanks go to Yury G. Kudryashov, Andrew Morsillo and Sander van der Burg for doing the hard work on adding KDE 4 to Nixpkgs. (Screenshot 1, screenshot 2) ...

Published on Thu Feb 05 2009

Nix and NixOS releases are now built in Hydra, the new Nix-based continuous build system. Hydra replaces our old Nix-based build farm, which will be phased out soon. There are several advantages over the old build farm: the build tasks for a project are scheduled and published separately, so that for instance a (fast) tarball build doesn’t have to wait for a (slow) Cygwin build; build results are stored in a database, which will enable all sorts of interesting queries; better error reporting; a better web interface; and much more. We have written a draft paper about Hydra. There are some instructions available about how to set up your own Hydra server. ...

Published on Thu Jan 22 2009

There is an article on Linux.com about Nix: “Nix fixes dependency hell on all Linux distributions”. ...

Published on Sun Dec 21 2008

Nix 0.12 has been released. The most important change is that Nix no longer needs Berkeley DB to store metadata, but there are many other improvements. See the release notes for details. ...

Published on Thu Oct 09 2008

The paper “Atomic Upgrading of Distributed Systems” (by Sander van der Burg, Eelco Dolstra and Merijn de Jonge) has been accepted for presentation at the First ACM Workshop on Hot Topics in Software Upgrades (HotSWUp). A draft of the paper is available. It describes Sander’s master’s thesis research on DisNix, an extension to Nix that allows deployment and upgrading of distributed systems from a single declarative description. We will continue this research in the Jacquard PDS project, which has now started. (We still have an opening for a PhD student or a postdoc; please contact us if you’re interested.) ...

Published on Wed Jul 16 2008

The paper “NixOS: A Purely Functional Linux Distribution” (by Eelco Dolstra and Andres Löh) has been accepted for presentation at the 2008 International Conference on Functional Programming (ICFP). It describes NixOS in much greater detail than last year’s HotOS paper, and argues why the purely functional style and features such as laziness are important for system configuration management. It also provides some measurements on the actual purity of Nix build actions. A draft of the paper is available. ...

Published on Fri Jun 06 2008

The Nix website was down for a few days due to cooling problems in the server room causing the machine to overheat. These should be resolved now. Apologies for the inconvenience. ...

Published on Sun May 25 2008

The Nix website has moved to nixos.org (hosted at TU Delft). The Subversion repositories have moved to svn.nixos.org. See this mailing list posting for information about moving existing SVN working copies. ...

Published on Mon May 05 2008

Eelco Dolstra presented the paper “Maximal Laziness — An Efficient Interpretation Technique for Purely Functional DSLs” at 8th Workshop on Language Description, Tools and Applications (LDTA 2008). It’s about caching of evaluation results in the Nix expression evaluator as a technique to make a simple term-rewriting evaluator efficient. Slides are here. ...

Published on Fri Mar 14 2008

The Jacquard program of NWO and EZ has granted funding for the Nix-related project “Pull Deployment of Services” (PDS), which is about improving the deployment of software and services in complex heterogenous environments. The grant consists of 368 K€ for a PhD student (4 years) and a postdoc (3 years). If you’re interested in these positions, please have a look at this page, and don’t hesitate to contact Eelco Visser or Eelco Dolstra. ...

Published on Wed Feb 06 2008

New NixOS installation CD images for i686 and x86_64 are available, which is a good thing as the previous ones were already a few months old. The new images are Nix 0.11-based, contain Memtest86+ as a convenience, should support more SATA drives, and show online help (the NixOS manual) on virtual console 7. ...

Published on Thu Jan 31 2008

Nix 0.11 has been released. This is a major new release representing over a year of development. The most important improvement is secure multi-user support. It also features many usability enhancements and language extensions, many of them prompted by NixOS, the purely functional Linux distribution based on Nix. See the release notes for details. ...

Published on Fri Oct 12 2007

Nixpkgs 0.11 has been released. See the release notes for details. ...

Published on Wed Oct 10 2007

OpenOffice is now in Nixpkgs (screenshot of OpenOffice 2.2.1 running under NixOS, and another screenshot). Despite being a rather gigantic package (it takes two hours to compile on an Intel Core 2 6700), OpenOffice had only two “impurities” (references to paths outside of the Nix store) in its build process that had to be resolved — a reference to /bin/bash and one to /usr/lib/libjpeg.so. Armijn Hemel, Wouter den Breejen and Eelco Dolstra contributed to the Nix expression for OpenOffice. ...

Published on Sat Sep 22 2007

Wine now runs on NixOS! Finally we can run all those legacy applications... Thanks to Michael Raskin for adding Wine and a NPTL-enabled Glibc (which Wine seems to need). This is a nice application of purely functional package composition, by the way: Wine didn’t work with the standard Glibc in Nixpkgs, so we just pass it another Glibc at build time. In other news, Nix 0.11 and Nixpkgs 0.11 will be released soon. ...

Published on Fri Sep 14 2007

There is now a mailing list (nix-commits@cs.uu.nl) that you can subscribe to if you want to receive automatic commit notifications from the Nix Subversion repository. ...

Published on Fri Jun 08 2007

Eelco Dolstra presented the paper Purely Functional System Configuration Management at the 11th Workshop on Hot Topics in Operating Systems (HotOS XI). It gives an overview of the ideas behind NixOS. The slides are also available. ...

Published on Wed May 02 2007

We now have KDE running on NixOS (obligatory screenshot). Just kdebase for now (Martin Bravenboer already added kdelibs a long time ago so that we could run the wonderful KCachegrind), but it contains all the important stuff (Konqueror, KDesktop, Kicker, Konsole, Control Center, etc.). In related news, we can safely say that, rumours to the contrary notwithstanding, NixOS is not an April Fools’ Joke. ...

Published on Thu Apr 05 2007

NixOS is now almost usable as a desktop OS ;-). We have an X server, a bunch of Gnome packages, basic wireless support, and of course all the applications in Nixpkgs that we had all along running on other Linux distributions. Here are a few screenshots: X server with Compiz window manager. Emacs and a few terminals showing off the (near) absence of /lib, /bin etc.; everything is in the Nix store. Some applications. ...

Published on Mon Mar 19 2007

There is now some basic documentation for NixOS. ...

Published on Fri Feb 23 2007

NixOS now works on x86_64 machines. A 64-bit ISO is available. ...

Published on Fri Feb 23 2007

To quote Eelco Visser: new hardware for buildfarm at Delft University of Technology has arrived. Here’s what we have: 5 Intel Core 2 Duo DualCore machines with 1GB RAM, 2 Mac minis with 1,83-GHz Intel Core Duo-processor, another Core 2 Duo a UPS to deal with spikes in power supply, a console with integrated monitor and keyboard switches, a rack with room for a couple more machines. Here’s what we’re going to do with the goodies. The five Intel machines and the two MacMinis (also Intel) are going to be used to crank at building hundreds of software packages. Using virtualisation we should be able to run builds on multiple operating system distributions. Read more… ...

Published on Sun Nov 12 2006

Nixpkgs 0.10 has been released. See the release notes for details. ...

Published on Sat Nov 11 2006

Nix 0.10.1 has been released. It fixes two obscure bugs that shouldn’t affect most users. ...

Published on Mon Nov 06 2006

Nix 0.10 has been released. This release has many improvements and bug fixes; see the release notes for details. ...

Published on Fri Mar 03 2006

Nixpkgs 0.9 has been released. ...

Published on Sat Feb 18 2006

Eelco Dolstra defended his PhD thesis on the purely functional deployment model. ...

Published on Fri Oct 21 2005

Nix 0.9.2 has been released released. This is a bug fix release that addresses some problems on Mac OS X. ...

Published on Sun Oct 16 2005

Nix 0.9 has been released. This is a new major release that provides quite a few performance improvements and bug fixes, as well as a number of new features. Read the release notes for details. ...

Published on Sun Aug 28 2005

The paper “Secure Sharing Between Untrusted Users in a Transparent Source/Binary Deployment Model” has been accepted at ASE 2005. This paper describes how a Nix store can be securely shared by multiple users who may not trust each other; i.e., how do we prevent one user from installing a Trojan horse that is subsequently executed by some other user? ...

Published on Mon Aug 22 2005

The paper “Service Configuration Management” (accepted at the 12th International Workshop on Software Configuration Management) describes how we can rather easily deploy “services” (e.g., complete webserver configurations such as our Subversion server) through Nix by treating the non-component parts (such as configuration files, control scripts and static data) as components that are built by Nix expressions. The result is that all advantages that Nix offers to software deployment also extend to service deployment, such as the ability to easily have multiple configuration side by side, to roll back configurations, and to identify the precise dependencies of a configuration. ...

Published on Thu Mar 17 2005

The paper “Efficient Upgrading in a Purely Functional Component Deployment Model” has been accepted at CBSE 2005. It describes how we can deploy updates to Nix packages efficiently, even if “fundamental” packages like Glibc are updated (which cause a rebuild of all dependent packages), by deploying binary patches between components in the Nix store. Includes techniques such as patch chaining and computing deltas between archive files. ...

Published on Fri Jan 16 2004

The first Nix paper. ...