Logs on Erethon's Corner

This Week in NixOS, Week 35 2025

Sun, 31 Aug 2025 00:00:00 +0000

Keeping the streak up, here's the fourth week of This Week In NixOS.

This Week in NixOS, Week 34 2025

Sun, 24 Aug 2025 00:00:00 +0000

Lots of interesting things happened this week in the NixOS ecosystem. Here are my highlights.

This Week in NixOS, Week 33 2025

Sun, 17 Aug 2025 00:00:00 +0000

Second week of my NixOS notes on what happened in the community or that I learned that I found interesting.

This Week in NixOS, Week 32 2025

Sun, 10 Aug 2025 00:00:00 +0000

I often send to friends links about the NixOS ecosystem that I find interesting. I figured it's better if I write about it so I have an easily accessible archive of these links. Keep in mind, these links are based on my personal preferences and my observations.

Zero Hydra Failures filtering

Fri, 16 May 2025 00:00:00 +0000

I've been participating in the NixOS 25.05 Zero Hydra Failures event where people are encouraged to fix build failures in Nixpkgs. The website for the event is zh.fail (clever use of the fail tld!) and here's the current list of all failing packages and tests. I looked around in the website but I didn't find any way to filter failures only for Linux or architecture (x86_64/aarch64). This feature was requested when the zh.

TIL: Hugo's GitInfo

Mon, 03 Mar 2025 00:00:00 +0000

While catching up with my RSS feed, I ran into this post by Farid Zakaria which describes how they automatically add the latest git commit hash to their statically generated blog. This gave me the idea to do something similar on my Hugo theme and blog, as I frequently look for a source link when reading other people's blogs.

TIL: Zizmor and GitHub Actions security

Fri, 13 Dec 2024 00:00:00 +0000

I was reading up on the recent Ultralytics GitHub Action compromise and I stumbled upon this great analysis of the situation. In it, zizmor is introduced, which is a static analysis tool for GitHub Actions. I experimented with it a bit and I have to say it's working great. It correctly identified misconfigured GitHub Actions on some repositories I was working on. It's another tool that's worth having as part of your CI.

/tmp is not a tmpfs on NixOS

Mon, 02 Dec 2024 00:00:00 +0000

The other day I realized that /tmp/ on my NixOS installations is not a tmpfs as I'm used to from other distros. Instead, NixOS relies on this systemd timer that cleans up old files from /tmp/. This is not NixOS specific, other systemd based distros also run this timer. Looking at the NixOS boot.tmp related options, we see there's an option (cleanOnBoot) that clears files on boot and is disabled by default.