{ pkgs, inputs, self, primaryUser, ... }: {
  imports = [
    ./homebrew.nix
    ./settings.nix
    ./yabai.nix
    inputs.home-manager.darwinModules.home-manager
    inputs.nix-homebrew.darwinModules.nix-homebrew
  ];

  # nix config
  nix = {
    settings = {
      experimental-features = [ "nix-command" "flakes" ];
      max-jobs = "auto"; # Use all CPU cores
      cores = 0; # Use all cores per build
      # disabled due to https://github.com/NixOS/nix/issues/7273
      # auto-optimise-store = true;
    };
    enable = true; # using determinate installer

    # Garbage collection
    gc = {
      automatic = true;
      interval = { Weekday = 7; }; # Run weekly
      options = "--delete-older-than 30d";
    };
  };

  # Disable Docs 
  documentation = {
    enable = true;
    doc.enable = false; # Skip large documentation
    man.enable = true; # Keep man pages
    info.enable = false; # Skip info pages
  };

  nixpkgs.config = { allowUnfree = true; };
  # homebrew installation manager
  nix-homebrew = {
    user = primaryUser;
    enable = true;
    autoMigrate = true;
  };

  # home-manager config
  home-manager = {
    useGlobalPkgs = true;
    useUserPackages = true;
    users.${primaryUser} = { imports = [ ../home ]; };
    extraSpecialArgs = { inherit inputs self primaryUser; };
  };

  # macOS-specific settings
  programs.fish.enable = true;
  environment.shells = [ pkgs.fish ];
  system.primaryUser = primaryUser;
  users.users.${primaryUser} = {
    home = "/Users/${primaryUser}";
    shell = pkgs.fish;
  };
  environment = {
    systemPath = [ "/opt/homebrew/bin" ];
    pathsToLink = [ "/Applications" ];
  };
}