NixOS
NixOS is an independently developed GNU/Linux distribution that aims to improve the state of the art in system configuration management. In NixOS, the entire operating system, including the kernel, applications, system packages and configuration files, are built by the Nix package manager.
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Artix Linux
Artix Linux is a fork (or continuation as an autonomous project) of the Arch-OpenRC and Manjaro-OpenRC projects. Artix Linux offers a lightweight, rolling-release operating system featuring the OpenRC init software.