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

with lib;
{

  boot.kernelPackages = pkgs.linuxPackages_6_1;
  # 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 = {
    xkb.layout = "us";
    xkb.variant = "";
  };

  # 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;
  # virtualisation.containers.cdi.dynamic.nvidia.enable = true;
  hardware.nvidia-container-toolkit.enable = true ;
  services.openssh.enable = true;
  services.fstrim.enable = true;

  services = {
    grafana = {
      enable = true;
      settings.server = {
        http_port = 4358;
        http_addr = "127.0.0.1";
      };
    };
    prometheus = {
      enable = true;
      port = 4359;
      exporters = {
        node = {
          enable = true;
          enabledCollectors = [ "systemd" "processes" "drm" ];
          port = 9002;
        };
        smartctl.enable = true;
        process = {
          enable = true;
          settings.process_names = [
            { name = "{{.Matches.Wrapped}} {{ .Matches.Args }}"; cmdline = [ "^/nix/store[^ ]*/(?P<Wrapped>[^ /]*) (?P<Args>.*)" ]; }
          ];
        };
      };
      scrapeConfigs = [
        {
          job_name = "shen";
          static_configs = [{
            targets = [
              "127.0.0.1:${toString config.services.prometheus.exporters.node.port}"
              "127.0.0.1:${toString config.services.prometheus.exporters.smartctl.port}"
            ];
          }];
        }
      ];
    };
  };

}