Does Nix feel faster yet?

splice: defer per-output spliceReal recursion behind genAttrs by yvan-sraka · Pull Request #508944 · NixOS/nixpkgs Fixes #338231. Follow-up to #506578 and #506588 (already merged). @zimbatm's automated research tooling flagged this commit as a likely performance win. I was tasked to validate the numbers and...

Last week I built a little tool to find hot paths in Nix evaluations, classify and find simplifications trough code mutation.

Now nixpkgs eval is 30-50% faster on cross-compilation targets :-D

Let me know if you have slow code.

github.com/NixOS/nixpkg...

I'll be in SF March 7–11 after PlanetNix. Any builders around? DMs open.

The feeling that I could re-use code I wrote, is what got me hooked onto Nix. Chef, Puppet, and Ansible are at an unfair advantage. What makes Nix structurally different is the vertical integration between the OS and package manager.

With Nix, if you need any service or package not in search.nixos.org, go to github.com/search and search "language:Nix theservice". Most of the time, someone has already implemented it.

Take a look at this plugin: github.com/discourse/di...

Make `--write` only write on change by dani0854 · Pull Request #41 · reteps/dockerfmt Currently, even if there are no changes --write will still write to file, changing its last modified timestamp. This causes a problem for things that monitors file modification by that timestamp. F...

I love to see PRs like this.

By defining a formatter spec, treefmt keeps its code simple, and slowly pushes the formatter ecosystem in the right direction.

It works surprisingly well.

github.com/reteps/docke...

When your auto-updater bot has more commits than you in your project :-p

github.com/numtide/nix-...

Thanks, this claim is bogus. I had a branch that chmod 0600 the file, but even this doesn't really count as "secure".

GitHub - numtide/nix-auth: Nix access-token management tool Nix access-token management tool. Contribute to numtide/nix-auth development by creating an account on GitHub.

Tired of hitting rate limits when running `nix flake update`? Trying to fetch a private repository in your flake inputs or builtin fetchers?

Here is a new tool for you (still early, looking for feedback):

github.com/numtide/nix-...

#exposuretherapy :)

Probably, somewhere in the middle of the other 400 other notifications.

How is that possible? Team notification is supposed to be disabled.

GitHub - numtide/treefmt-nix: treefmt nix configuration treefmt nix configuration. Contribute to numtide/treefmt-nix development by creating an account on GitHub.

github.com/numtide/tree... now supports 100 formatters! :)

Introducing NixOS Mediation: A New Conflict Resolution Service Hey everyone, I’m excited to introduce a new service to the NixOS community: NixOS Mediation. Mediation is a valuable tool for resolving disputes and conflicts in a structured and constructive way. ...

Something I have been working on for the past month.

I'm excited to see what improved communication can bring to the NixOS ecosystem.

discourse.nixos.org/t/introducin...

Prediction: one or more languages will emerge, optimised for LLMs to talk to each other.

We'll start seeing Tweets that humans don't understand.

Nice, looks good!

Welcome!

Senior Infrastructure Engineer San Francisco, CA, New York, NY, Portland, OR, or Remote within Canada or United States

Our team is hiring. If Nix, NixOS and AWS sounds like fun check it out.

grnh.se/7bba27744us

devenv 1.4: Generating Nix Developer Environments Using AI - devenv Fast, Declarative, Reproducible, and Composable Developer Environments using Nix

✨ devenv 1.4: Generating Nix Developer Environments Using AI

devenv.sh/blog/2025/02...

Excalidraw — Collaborative whiteboarding made easy Excalidraw is a virtual collaborative whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.

excalidraw.com is great to have around when having technical conversations. I like how zero-friction it is.

Try code.citadel.org/citadel.git/

Do you remember the OOP gang of four? Or how UML was going to replace programmers? When REST or Semantic Web was the new hotness? Or Unix systems full of security holes?

Stuggling to build good software isn't something new I feel.

As it should be; the article is making general dramatic claims based on zero evidence. What's the point of the article?

Did anybody use www.citadel.org?

Every few years I run into it, and it has this intriguing set of features and vibe. BBS for the Web.

I'm curious if any businesses are using it.

"Cough’dem (FOSDEM Fever)" by @revolutionaryspectrum1913 | Suno drum and bass, uk, electro song. Listen and make your own with Suno.

FOSDEM gave me the cough'dem.

suno.com/song/de2da7c...

Nix: structuring Flakes with Blueprint I’m sitting here, in an Airbnb in Brussels, after a long weekend of talking tech and drinking beer during my first FOSSDEM. Seems like as good a time as any then to try and restart my regular posting ...

Brian wrote a post on blueprint: bmcgee.ie/posts/2025/0...

The project is coming along quite nicely.

Matrix - Decentralised and secure communication You're invited to talk on Matrix. If you don't already have a client this link will help you pick one, and join the conversation. If you already have one, this link will help you join the conversation

Anybody else is going to FOSDEM this year?

Created a room for the NixOS peeps: matrix.to#/%23nixos-fo...

My wife was happy with her Pixel 4a phone. Last week Google pushed a software update, and now the battery is draining like a sieve. Google doesn't explain why this happeend and how to fix this.

news.ycombinator.com/item?id=4286...

nice, looks good. it's going to be good for the ecosystem to reduce the amount of input "follows" and flake.lock file sizes.