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.
VS
Mabox Linux
Mabox Linux is a Manjaro-based rolling-release distribution. It features the Openbox window manager as its default user interface and provides a welcome screen with access to utilities which add additional software to the operating system.