ATProto is really neat. It took me two 30min sessions to migrate from bsky.app to my own self-hosted PDS. It felt really smooth, you can see they really thought this trough.
zimbatm
@zimbatm.com
I like to build things. Helping companies adopt #Nix and #NixOS at https://numtide.com
You become the top 5 people you hang out with. For some people it's Claude, Codex, ChatGPT, Gemini and Grok.
Anyone interested to hack on Nix in Mexico? June 20 – 26 I have two free tickets: tacosprint.org
Taco Sprint
A week of Nix hacking near the beach
tacosprint.org
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...
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...
github.com
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.
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...
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...
github.com
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-...
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.
github.com
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...
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. ...
discourse.nixos.org
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.
Our team is hiring. If Nix, NixOS and AWS sounds like fun check it out. grnh.se/7bba27744us
Senior Infrastructure Engineer
San Francisco, CA, New York, NY, Portland, OR, or Remote within Canada or United States
grnh.se
✨ devenv 1.4: Generating Nix Developer Environments Using AI devenv.sh/blog/2025/02...
devenv 1.4: Generating Nix Developer Environments Using AI - devenv
Fast, Declarative, Reproducible, and Composable Developer Environments using Nix
devenv.sh
excalidraw.com is great to have around when having technical conversations. I like how zero-friction it is.
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
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.
citadel.org
citadel.org
Brian wrote a post on blueprint: bmcgee.ie/posts/2025/0... The project is coming along quite nicely.
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 ...
bmcgee.ie
Anybody else is going to FOSDEM this year? Created a room for the NixOS peeps: matrix.to#/%23nixos-fo...
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
matrix.to
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...
Google Pixel 4a's old firmware is gone, trapping users on buggy battery update | Hacker News
news.ycombinator.com
Is anybody using determinate.systems/posts/magic-... ? Kinda wondering if it's worth rewriting it in TypeScript.
End of life for the free tier of the Magic Nix Cache
Some unfortunate decisions by GitHub have forced us to wind down free caching with the Magic Nix Cache by 1 February 2025
determinate.systems
discourse.nixos.org/t/nix-2-26-r... Nix 2.26 is out! The biggest change is how path sub-flakes are handled. Previously, their input was locked by a hash which led to confusion from users. With that change, having a `./dev` sub-flake now becomes practical.
Nix 2.26 released
Hi, I’m pleased to announce the availability of Nix 2.26. It is available from https://releases.nixos.org/?prefix=nix/nix-2.26.0/ . Support for relative path inputs #10089 Flakes can now refer to...
discourse.nixos.org
Lix has the most enjoyable release notes of the industry. It repeats what the project is about, has a great tone, provides a summary and details. Love it.
isabel@isabelroses.com · 2y agonew lix release! awesome! lix.systems/blog/2025-01...
Can't believe we're 6 short of 100 supported code formatters already. github.com/numtide/tree...
GitHub - numtide/treefmt-nix: treefmt nix configuration
treefmt nix configuration. Contribute to numtide/treefmt-nix development by creating an account on GitHub.
github.com
Reminder that you can get unfree+redistributable binaries (eg: CUDA, ZeroTier or MongoDB) from the nix-community.cachix.org cache. I noticed today that this knowledge is not widely available. hydra.nix-community.org/project/nixp...
Cachix - Nix binary cache hosting
nix-community.cachix.org
There. One less papercut. github.com/nix-communit...
feat: add hostname change detection by zimbatm · Pull Request #591 · nix-community/srvos
NixOS is just too easy to deploy to the wrong host. Eg: nixos-rebuild --flake .#wronghostname --target-host root@otherhost switch It happened to me a few times, and when I started talking about it...
github.com
zimbatm@zimbatm.com · 2y agoDid you ever deploy your NixOS configuration to the wrong host? It happened to me a few times. Luckily it's easy to revert but it can cause downtime and state folders to be left around.