{ config, pkgs, ... }:
let
  # Create a customized version of logseq
  logseq-patch = pkgs.logseq.overrideAttrs (oldAttrs: {
    electron_27 = pkgs.electron_38;
  });
in
{
  system.activationScripts.ciscoPreHook = {
    text = ''
      echo "Prefetching Cisco Packet Tracer dependencies..."
      ${pkgs.nix}/bin/nix-prefetch-url --type sha256 file:///etc/nixos/local-pkgs/CiscoPacketTracer822_amd64_signed.deb
    '';
    deps = [];
  };


  # Set your time zone.
  time.timeZone = "Europe/Berlin";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_GB.UTF-8";

  i18n.extraLocaleSettings = {
    LC_ADDRESS = "de_DE.UTF-8";
    LC_IDENTIFICATION = "de_DE.UTF-8";
    LC_MEASUREMENT = "de_DE.UTF-8";
    LC_MONETARY = "de_DE.UTF-8";
    LC_NAME = "de_DE.UTF-8";
    LC_NUMERIC = "de_DE.UTF-8";
    LC_PAPER = "de_DE.UTF-8";
    LC_TELEPHONE = "de_DE.UTF-8";
    LC_TIME = "de_DE.UTF-8";
  };

  networking = {
    networkmanager.enable = true;
  };

  programs.wireshark = {
    enable = true;
    usbmon.enable = true; # Allow USB monitoring
    dumpcap.enable = true; # Allow network capture
  };

  # Add zsh
  programs.zsh = {
    enable = true;
    enableCompletion = true;
    autosuggestions.enable = true;
    syntaxHighlighting.enable = true;

    shellAliases = {
      ll = "ls -l";
    };
  };

  programs.git = {
    enable = true;
    lfs.enable = true;
  };

  # Allow dynamicly linked executables
  programs.nix-ld.enable = true;

  # Libvirt
  programs.virt-manager.enable = true;

  virtualisation.libvirtd = {
    enable = true;
    qemu = {
      package = pkgs.qemu_kvm;
      runAsRoot = true;
      swtpm.enable = true;
      ovmf = {
        enable = true;
        packages = [(pkgs.OVMF.override {
          secureBoot = true;
          tpmSupport = true;
        }).fd];
      };
    };
  };
  virtualisation.spiceUSBRedirection.enable = true;  
  systemd.tmpfiles.rules = [ "L+ /var/lib/qemu/firmware - - - - ${pkgs.qemu}/share/qemu/firmware" ];

  # printing
  # Enable CUPS to print documents.
  services.printing = {
    enable = true;
    drivers = [ pkgs.cnijfilter2 ];
  };

  services.avahi = {
    enable = true;
    nssmdns4 = true;
    openFirewall = true;
  };

  environment.systemPackages = with pkgs; [
    starship
    virtiofsd
    fzf
    jq
    bc
    vim
    wget
    git
    librewolf
    rnote
    vscode
    nextcloud-client
    ciscoPacketTracer8
    gimp3
    logseq-patch

    libreoffice
    hunspell
    hunspellDicts.en_US
    hunspellDicts.de_DE

    cnijfilter2 # Canon printer driver
    wireshark
  ];
}