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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SparkyLinux
SparkyLinux is a set of Debian-based desktop Linux distributions. The project provides separate editions with KDE Plasma, LXQt, MATE and Xfce desktops, as well as a lightweight flavour featuring the Openbox window manager.