instantOS is based on Arch Linux and maintains full compatibility with the Arch Wiki and AUR. It uses a custom window manager/compositor with a bunch of facilitating custom software to provide an experience similar to a desktop environment but as powerful and fast as a window manager. In fact, all pieces being made for each other allows things that wouldn't be possible by just editing dotfiles. It also has its own installer instantARCH and instantNIX provides packages for the Nix universal package manager and NixOS.