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Migrating from Proxmox to NixOS and Incus

I've gone full Nix: Proxmox to NixOS + Incus | Bas Nijholt

nijho.lt

June 25, 2026

9 min read

🔥🔥🔥🔥🔥

48/100

Summary

Proxmox has been decommissioned in favor of NixOS running Incus for managing a homelab. The transition involved migrating from a multi-node Proxmox cluster to a declarative configuration using NixOS.

Key Takeaways

  • The author migrated from Proxmox to NixOS running Incus, decommissioning their Proxmox cluster after years of use.
  • NixOS provided a solution to issues with NVIDIA driver management, allowing for atomic updates and reproducible configurations.
  • The author experienced significant friction with Proxmox's GUI-first approach, which led to state drift and difficulties in maintaining infrastructure as code.
  • NixOS enabled the author to document and automate hardware fixes directly in the system configuration, improving system reliability and ease of maintenance.
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Community Sentiment

Mixed

Positives

  • NixOS has significantly improved my workflow with Proxmox, allowing me to configure and deploy everything from a single workstation without relying on the GUI.
  • The ability to use AI agents for deploying fully terraformed VMs in Proxmox showcases the potential for automation and efficiency in managing infrastructure.
  • Incus appears to offer features like container management and instance cloning that could enhance operational efficiency compared to other solutions.

Concerns

  • Proxmox's API is poorly documented and lacks features, which limits its usability for comprehensive infrastructure management.
  • The documentation for Nix and Incus is often terse and assumes a high level of prior knowledge, making it challenging for new users to get started.
  • While Incus seems popular, its benefits over alternatives like Ganeti are not clearly articulated, leading to confusion about its advantages.

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