{
  lib,
  inputs,
  config,
  ...
}:
with lib;
{
  config = mkIf config.hd.common.nix.enable {
    nix.settings = {
      experimental-features = [
        "nix-command"
        "flakes"
      ];
      trusted-users = [ "root" ];
      auto-optimise-store = true;
    };
    nix.registry = {
      cfg.flake = inputs.self;
      nixpkgs.flake = inputs.nixpkgs;
      nixpkgs-stable.flake = inputs.nixpkgs-stable;
    };
    nixpkgs.config.allowUnfree = false;
  };
}