# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
    ];


#  nix.nixPath = [
#    "nixpkgs=https://releases.nixos.org/nixos/18.09/nixos-18.09.2303.e542fc2c94d/nixexprs.tar.xz"
#    "nixos-config=/etc/nixos/configuration.nix"
#    "nixpkgs-overlays=/etc/nixos/overlays/"
#  ];

  # Use the GRUB 2 boot loader.
  boot.loader.grub.enable = true;
  boot.loader.grub.version = 2;
  boot.loader.grub.efiSupport = true;
  boot.loader.grub.efiInstallAsRemovable = true;
  # boot.loader.efi.efiSysMountPoint = "/boot/efi";
  # Define on which hard drive you want to install Grub.
   boot.loader.grub.device = "nodev"; # or "nodev" for efi only

   networking.hostName = "nixmech"; # Define your hostname.
   networking.hostId = "d6ef9403"; # Define your hostname.
   #networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.

  # Configure network proxy if necessary
  # networking.proxy.default = "http://user:password@proxy:port/";
  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";

  # Select internationalisation properties.
   i18n = {
   #  consoleFont = "Lat2-Terminus16";
     consoleKeyMap = "us";
     defaultLocale = "en_US.UTF-8";
   };

  # Set your time zone.
   time.timeZone = "Asia/Hong_Kong";

  # List packages installed in system profile. To search, run:
  # $ nix search wget
   environment.systemPackages = with pkgs; [
     wget
     vim
     emacs
     firefox
     xscreensaver
     unzip
     which
     networkmanagerapplet
     git
     tmux
     parted
     fish
     pciutils
     smbclient
     rxvt_unicode-with-plugins
     polybar
     compton
     brave
   ];

  # Some programs need SUID wrappers, can be configured further or are
  # started in user sessions.
  # programs.mtr.enable = true;
  # programs.gnupg.agent = { enable = true; enableSSHSupport = true; };

  # List services that you want to enable:

  # Enable the OpenSSH daemon.
  services.openssh.enable = true;

  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  # networking.firewall.enable = false;

  # Enable CUPS to print documents.
  # services.printing.enable = true;

  # Enable sound.
   sound.enable = true;
   hardware.pulseaudio.enable = true;

  # Enable the X11 windowing system.
  # services.xserver.enable = true;
  # services.xserver.layout = "us";
  # services.xserver.xkbOptions = "eurosign:e";

  # Enable touchpad support.
  # services.xserver.libinput.enable = true;

  # Enable the KDE Desktop Environment.
  # services.xserver.displayManager.sddm.enable = true;
  # services.xserver.desktopManager.plasma5.enable = true;

  services.xserver = {
    enable = true;
    desktopManager = {
      default = "none";
      xterm.enable = false;
    };
    windowManager.i3 = {
      enable = true;
      package = pkgs.i3-gaps;
    };
    windowManager.default = "i3";

    layout = "us";
    libinput.enable = true;
  };

  # Define a user account. Don't forget to set a password with ‘passwd’.
  # users.users.guest = {
  #   isNormalUser = true;
  #   uid = 1000;
  # };

  users.extraUsers.wayc = {
    createHome = true;
    extraGroups = ["wheel" "audio" "video" "disk" "networkmanager"];
    group = "users";
    home = "/home/wayc";
    isNormalUser = true;
    uid = 1000;
    shell = pkgs.fish;
  };

  nixpkgs.config = {
    # allow unfree packages
    allowUnfree = true;
    packageOverrides = pkgs: rec {
      polybar = pkgs.polybar.override {
        i3Support = true;
      };
    };
  };

  services.xserver.videoDrivers = [ "nvidia" ];
  hardware.nvidia.optimus_prime.enable = true;
  hardware.nvidia.optimus_prime.nvidiaBusId = "PCI:1:0:0";
  hardware.nvidia.optimus_prime.intelBusId = "PCI:2:0:0";

  fonts = {
    fonts = with pkgs; [
      nerdfonts
      source-code-pro
      roboto-mono
    ];
  };

  # auto mount our FreeNAS SMB share
  fileSystems."/mnt/freenas" = {
    device = "//192.168.1.187/SMBMediaLibrary";
    fsType = "cifs";
    options = [ "username=wchan" "password=xxxxxxxx" "rw" "uid=1000" "gid=100" ];
  };

  system.autoUpgrade.enable = true;
  system.autoUpgrade.channel = https://nixos.org/channels/nixos-19.03;

  # This value determines the NixOS release with which your system is to be
  # compatible, in order to avoid breaking some software such as database
  # servers. You should change this only after NixOS release notes say you
  # should.
  system.stateVersion = "18.09"; # Did you read the comment?

}