{ config, lib, pkgs, ... }:

with lib;
{

  boot.kernelPackages = pkgs.linuxPackages_latest;
  # Use the systemd-boot EFI boot loader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  nix = {
   extraOptions = "experimental-features = nix-command flakes";
   package = pkgs.nixFlakes; 
   gc = {
     automatic = true;
     dates = "weekly";
     options = "--delete-older-than 20d";
   };
   settings = {
     auto-optimise-store = true;
   };
  };
  nixpkgs.config.allowUnFree = true;

  system.autoUpgrade = {
    enable = true;
    dates = "04:40";
    allowReboot = true;
    flake = "${config.users.users.chris.home}/conf";
    flags = [ "--update-input" "nixpkgs" "--commit-lock-file" ];
    rebootWindow = {
      lower = "04:40";
      upper = "05:20";
    };
  };

  # Set your time zone.
  time.timeZone = "America/Chicago";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.utf8";

  # Configure keymap in X11
  services.xserver = {
    layout = "us";
    xkbVariant = "";
  };

  # Enable networking
  networking.networkmanager.enable = true;

  services.avahi = {
    enable = true;
    publish.enable = true;
    publish.userServices = true;
  };

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.chris = {
    isNormalUser = true;
    description = "Chris";
    extraGroups = [ "networkmanager" "wheel" ];
    packages = with pkgs; [];
  };
  environment.homeBinInPath = true;
  programs.fish.enable = true;

  virtualisation.docker.enable = true;
  services.openssh.enable = true;
  services.fstrim.enable = true;

}