Compatibility: These instructions work as of Proxmox 8.x and NixOS 24.05. One of the stumbling blocks I ran into when trying out NixOS was that I couldn’t run it under Proxmox, my preferred virtual machine server. Through some trial and error, I figured out how to install NixOS as a Proxmox container. Download the NixOS container image First, download the latest NixOS x86_x64 lxdContainerImage image. For other hardware architectures, see this GitHub comment.