Personal nixos configuration repo.
Inspired from https://github.com/michaelpj/nixos-config

To use, clone into /etc/nixos and symlink some machine's
configuration.nix to /etc/nixos

overlays: defines new packages
profiles: defines includable common code that *do stuff*
modules: defines options included by profiles/common.nix like nixpkgs/nixos/modules
machines/hostname: host specific config (link from there)
tests: test configurations