{
  config,
  pkgs,
  ...
}:
{
  imports = [
    ../settings/base.nix
    ../settings/configuration/berlin.nix
    ../settings/configuration/british-english.nix
    ../settings/configuration/nix-linux.nix
    ../settings/configuration/user.nix
    ../settings/hardware/audio.nix
    ../settings/hardware/bare-metal.nix
    ../settings/hardware/mouse.nix
    ../settings/hardware/systemd-boot.nix
    ../settings/hardware/nvidia-gpu.nix
    ../settings/hardware/keyboard.nix
    ../settings/hardware/keyboard-lofree.nix
    ../settings/hardware/trezor.nix
    ../settings/services/syncthing.nix
    ../settings/services/virtualisation.nix
    ../settings/user-interface.nix
    ../settings/programs/base.nix
    ../settings/programs/kde.nix
    ../settings/programs/shell.nix
    ../settings/programs/docker.nix
    ../settings/dev.nix
    ../settings/gaming.nix
  ];

  virtualisation.vmVariant = {
    disabledModules = [
      ../settings/hardware/nvidia-gpu.nix
      ../settings/hardware/bare-metal.nix
      ../settings/gaming.nix
      ../settings/user-interface.nix
      ../settings/programs/kde.nix
      
      
      
      
      
    ];
    services.qemuGuest.enable = true;
    virtualisation = {
      memorySize = 4096;
      cores = 4;
    };
  };

  nixpkgs.hostPlatform = "x86_64-linux";

  services.xserver.screenSection = ''
    Option "MetaModes" "2560x1440_165 +0+0 { }"
    #Option "MetaModes" "2560x1440_120 +0+0 { AllowGSYNC=Off }"
  '';
  services.xserver.monitorSection = ''
    Option "DPMS"
  '';
  services.displayManager.autoLogin = {
    user = "alin";
    enable = true;
  };

  boot.kernelPackages = pkgs.linuxPackages_xanmod;
  boot.extraModulePackages = with config.boot.kernelPackages; [
    zenpower
  ];

  boot.initrd.availableKernelModules = [
    "nvme"
    "xhci_pci"
    "ahci"
    "usbhid"
  ];

  boot.initrd.supportedFilesystems = [
    "xfs"
    "ext4"
  ];
  fileSystems = {
    "/" = {
      device = "/dev/disk/by-partlabel/nixos";
      fsType = "ext4";
      options = [
        "lazytime"
        "nodiscard"
      ];
    };

    "/boot" = {
      device = "/dev/disk/by-partlabel/efi-boot";
      fsType = "vfat";
    };

    "/mnt/data" = {
      device = "/dev/disk/by-partlabel/data";
      fsType = "ntfs3";
      options = [
        "uid=1000"
        "gid=100"
        "x-systemd-automount"
        "nofail"
      ];
    };

    "/mnt/games" = {
      device = "/dev/disk/by-partlabel/games";
      fsType = "xfs";
      options = [
        "x-systemd-automount"
        "nofail"
      ];
    };
  };

  swapDevices = [
    {
      label = "swap";
      discardPolicy = "once";
    }
  ];

  services.xserver = {
    xautolock.enable = pkgs.lib.mkForce false;
  };

  services.openssh = {
    enable = true;
    openFirewall = false;
    startWhenNeeded = true;
  };
  systemd.services."ssh-no-sleep@" = {
    bindsTo = [ "sshd@%i.service" ];
    wantedBy = [ "sshd@.service" ];
    serviceConfig.ExecStart = "${pkgs.systemd}/bin/systemd-inhibit --mode block --what sleep --who 'ssh session '%I --why 'session still active' ${pkgs.coreutils}/bin/sleep infinity";
  };

  networking = {
    hostName = "prefect";
    useDHCP = false;
    useNetworkd = true;
    interfaces.enp6s0 = {
      useDHCP = true;
    };
    hosts = {
      "fd7a:115c:a1e0::53" = [
        "tailscale"
        "ts"
      ];
      "::1" = [
        "alanpearce.test"
        "alanpearce.localhost"
      ];
    };

    nftables = {
      enable = true;
    };
    firewall = {
      extraInputRules = ''
        ip saddr 10.0.0.0/8 accept
        ip6 saddr { fd00::/8, fe80::/10 } accept
      '';
    };
  };

  services.tailscale = {
    enable = true;
    extraUpFlags = [
      "--accept-dns=true"
      "--accept-routes=false"
    ];
  };

  system.stateVersion = "25.05";

  security.pki.certificates = [
    ''
      -----BEGIN CERTIFICATE-----
      MIIBozCCAUqgAwIBAgIRAJ1slNK3lsucmYYUbtGRUvswCgYIKoZIzj0EAwIwMDEu
      MCwGA1UEAxMlQ2FkZHkgTG9jYWwgQXV0aG9yaXR5IC0gMjAyNCBFQ0MgUm9vdDAe
      Fw0yNDA2MjYxNTM3MTJaFw0zNDA1MDUxNTM3MTJaMDAxLjAsBgNVBAMTJUNhZGR5
      IExvY2FsIEF1dGhvcml0eSAtIDIwMjQgRUNDIFJvb3QwWTATBgcqhkjOPQIBBggq
      hkjOPQMBBwNCAAR1fc1TOhp9oNy/p40BfUd+E13b1/URwwocuZ5w0SKHTE/t8Hp+
      7Zd9ZTYvQ7WxFfaVxmBCcFMUJsTm7bbYTEvlo0UwQzAOBgNVHQ8BAf8EBAMCAQYw
      EgYDVR0TAQH/BAgwBgEB/wIBATAdBgNVHQ4EFgQUcnlbpAM2ZCRsiCzdFiM5EjCm
      aoEwCgYIKoZIzj0EAwIDRwAwRAIgcKf3vRiF87G0r2+vgBbyfWo4D2TDQWkSrfek
      Q0f1Q5UCIEmyeqrifbp5JnZqtm3IlGVIEQcUeVygqnV/xW3xCAgT
      -----END CERTIFICATE-----
    ''
  ];

  boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
  nix.settings.trusted-users = [
    "root"
    "nixremote"
  ];
  services.displayManager.hiddenUsers = [ "nixremote" ];
  users.users.nixremote = {
    shell = "/bin/sh";
    isNormalUser = true;
    home = "/var/lib/nixremote";
    createHome = true;
    openssh.authorizedKeys.keys = [
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBxa7lxDu0M4chats/VvpFzjT3ruexKa3J9UC6ASo3bN root@NanoPi.lan"
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIE9of82WBHK8nr8L9RGeieLMfcAWaFCeCkmvYHM9LCuT nanopi"
    ];
  };

  users.users.root.openssh.authorizedKeys.keys = [
    "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBHYUyDdw92TNXguAxcmcmZmn/7ECGdRp6ckjxU+5zCw3BCnsS5+xEvHBVnnFdJRoH2XpfMeJjE+fi67zFVhlbn4= root@secretive.marvin"
  ];
}