{
    pkgs,
    ...
}: {
    # Server-specific configuration that builds on the base
    
    # Disable unnecessary graphical services
    services.xserver.enable = false;
    
    # Server-specific packages
    environment.systemPackages = with pkgs; [
        tmux
        htop
        iotop
        iftop
        nmap
    ];
    
    # Enable SSH server
    services.openssh = {
        enable = true;
        settings = {
            PasswordAuthentication = false;
            PermitRootLogin = "no";
        };
    };
    
    # Firewall configuration
    networking.firewall = {
        enable = true;
        allowedTCPPorts = [ 22 ]; # SSH
    };
    
    # Optimize for server use
    services.fstrim.enable = true;
    boot.tmp.cleanOnBoot = true;
    
    # More aggressive garbage collection for servers
    nix.gc = {
        dates = "daily";
        options = "--delete-older-than 3d";
    };
}