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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Nobara Project
Nobara Project is a modified version of Fedora Linux with user-friendly fixes added to it. The distribution comes with certain features that do not ship with the regular Fedora, such as WINE dependencies, OBS Studio, 3rd party codec packages for GStreamer, NVIDIA drivers, and some package fixes.