{ pkgs, ... }:
{
  # Many settings should be handled by home manager. System-wide settings are however managed here.
  imports = [
    ./yabai.nix
  ];

  nixpkgs.config.allowUnfree = true;

  nix = {
    # gc = {
    #   automatic = true;
    #   options = "--delete-older-than 2d";
    # };

    settings = {
      allow-dirty = true;
      experimental-features = [ "nix-command" "flakes" "repl-flake" ];
      builders-use-substitutes = true;
      extra-platforms = [ "x86_64-darwin" "aarch64-darwin" ];
      log-lines = 50;

      # https://github.com/NixOS/nix/issues/7273
      # auto-optimise-store = true;
    };

    buildMachines = [
      {
        hostName = "defiant.home.feal.no";
        system = "x86_64-linux";

        maxJobs = 6;
        supportedFeatures = [ "kvm" "big-parallel" "benchmark" "nixos-test" ];
        mandatoryFeatures = [ ];

        sshUser = "felixalb";
        sshKey = "/var/root/.ssh/nix-builder";
      }
    ];

    distributedBuilds = true;
    extraOptions = "builders-use-substitutes = true";
  };

  # System packages for all users
  environment = {
    systemPackages = with pkgs; [
      eza
      findutils
      gnugrep
      jq
      nix-output-monitor
      ripgrep
      skhd
      sshfs
      wget
    ];

    variables = {
      EDITOR = "nvim";
      VISUAL = "nvim";
    };
  };

  users.users.felixalb = {
    home = "/Users/felixalb";
    shell = pkgs.zsh;
  };

  programs.zsh.enable = true;
  system.activationScripts.postActivation.text = ''sudo chsh -s ${pkgs.zsh}/bin/zsh''; # Since it's not possible to declare default shell, run this command after build


  fonts = {
    fontDir.enable = true;
    fonts = with pkgs; [
      noto-fonts
      font-awesome
      fira-code
      hack-font

      (nerdfonts.override {
        fonts = [
          "Hack"
        ];
      })
    ];
  };

  system.defaults = {
    # login window settings
    loginwindow = {
      # disable guest account
      GuestEnabled = false;
      # show name instead of username
      SHOWFULLNAME = false;
    };

    finder = {
      AppleShowAllExtensions = true;
      FXEnableExtensionChangeWarning = true;
      _FXShowPosixPathInTitle = true;
    };


    # firewall settings
    alf = {
      # 0 = disabled 1 = enabled 2 = blocks all connections except for essential services
      globalstate = 1;
      loggingenabled = 0;
      stealthenabled = 1;
    };

    # dock settings
    dock = {
      autohide = true;
      autohide-delay = 0.0;
      autohide-time-modifier = 1.0;
      tilesize = 45;
      static-only = false;
      showhidden = false;
      show-recents = false;
      show-process-indicators = true;
      orientation = "bottom";
      mru-spaces = false;
    };
  };

  system.keyboard = {
    enableKeyMapping = true;
    remapCapsLockToControl = true;
  };

  # Auto upgrade nix package and the daemon service.
  services.nix-daemon.enable = true;
  nix.package = pkgs.nix;
}