---
title: "Discussion on \"NixOS Rebuilds, Upgrades and Generation Diffs\" | Hashnode"
description: "Discussion on \"NixOS Rebuilds, Upgrades and Generation Diffs\". My experience with upgrading NixOS to v25.05, how I use nvd to check differences between generations, and when to reboot after upgrades."
url: "https://hashnode.com/posts/nixos-rebuilds-and-upgrades/6835dac197688134f64891f5"
---

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# [NixOS Rebuilds, Upgrades and Generation Diffs](https://thenegation.hashnode.dev/nixos-rebuilds-and-upgrades?utm_source=hashnode&utm_medium=feed)

My experience with upgrading NixOS to v25.05, how I use nvd to check differences between generations, and when to reboot after upgrades.

May 27, 2025 · 5 min read · thenegation.hashnode.dev  
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## Written by

[Vehbi Sinan Tunalioglu](https://hashnode.com/@thenegation)

@thenegation · Singapore

  
[View profile](https://hashnode.com/@thenegation)

Busy trying to avoid success at all costs...

My name is Sinan. I am a computer programmer and a life-style entrepreneur. You can check my LinkedIn and GitHub profile pages for more information, and send an email to vst@vsthost.com to contact me. I am re-publishing my technical blog posts on hashnode . My website is available on thenegation.com , and its source code is available on GitHub .

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