A reproductible, declarative and reliable Linux operating system.
NixOS is a Linux distribution with a unique approach to package and configuration management. Built on top of the Nix package manager, it is completely declarative, makes upgrading systems reliable, and has many other advantages.
Most of my infrastructure is on NixOS.
How to Install NixOS With Full Disk Encryption (FDE) using LUKS2, Detached LUKS Header, and A Separate Boot Partition on an USB/MicroSD Card
NixOS Container (systemd-nspawn in Nix way) : NixOS