configuration.nix

# 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
    ];

  # Use the GRUB 2 boot loader.
  boot.loader.grub.enable = true;
  boot.loader.grub.version = 2;
  # Define on which hard drive you want to install Grub.
  boot.loader.grub.device = "/dev/sda";
  boot.extraModprobeConfig = ''
    options i915 enable_rc6=1 enable_fbc=1 lvds_downclock=1
    options snd slots=snd-hda-intel
  '';

  networking.hostName = "nixos"; # Define your hostname.
  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
  networking.networkmanager.enable = true;

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

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

  # List packages installed in system profile. To search by name, run:
  # $ nix-env -qaP | grep wget
  environment.systemPackages = with pkgs; [
    wget vim emacs git python ruby xclip chromium
  ];

  # List services that you want to enable:

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

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

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

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.extraUsers.jake = {
    createHome = true;
    isNormalUser = true;
    extraGroups = [ "wheel" "networkmanager" ];
    uid = 1000;
  };

  # Chromebook c720p crap begins

  # Need this so we don't lock up on opening the laptop lid
  boot.kernelParams = [
    "tpm_tis.force=1"
    "tpm_tis.interrupts=0"
    "i915.semaphores=1"
  ];

  boot.blacklistedKernelModules = [
    "snd_pcsp"
    "ehci_pci"
    "snd_hda_codec_hdmi"
  ];

  # Need a > 3.17 kernel for fixes and trackpad module
  nixpkgs.config.packageOverrides = pkgs: {
    linux_4_1 = pkgs.linux_4_1.override {
      extraConfig = ''
        CHROME_PLATFORMS y
        CHROMEOS_LAPTOP m
        CHROMEOS_PSTORE m
      '';
    };
  };
  boot.kernelPackages = pkgs.linuxPackages_4_1;

  # All this crap needs to be in place for most things to work
  boot.kernelModules = [
    "cyapa"
    "i2c_designware_pci"
    "i2c_designware_platform"
    "i2c_designware_core"
    "i2c_dev"
    "i2c_i801"
    "xf86-input-libinput"
  ];

  # This is blacklisted by systemd so force it to load
  boot.postBootCommands = "${config.system.sbin.modprobe}/sbin/modprobe i2c_i801";

  # And the touchpad xorg crap
  services.xserver = {
    enable = true;
    layout = "us";
    xkbOptions = "eurosign:e ctrl:nocaps";
    # Enable the KDE Desktop Environment.
    displayManager.auto.enable = true;
    displayManager.auto.user = "jake";
    desktopManager.kde5.enable = true;
    synaptics.enable = true;
    synaptics.twoFingerScroll = true;
    synaptics.palmDetect = true;
    exportConfiguration = true;
    videoDrivers = [ "intel" "vesa" ];
    vaapiDrivers = [ pkgs.vaapiIntel ];
    config = ''
Section "InputClass"
    Identifier      "touchpad peppy cyapa"
    MatchIsTouchpad "on"
    MatchDevicePath "/dev/input/event*"
    MatchProduct    "cyapa"
    Option          "SoftButtonAreas" "0% 0 0% 0 0 0 0 0"
    Option          "TapButton1" "1"
    Option          "TapButton2" "2"
    Option          "AreaBottomEdge" "0%"
    Option          "FingerLow" "8"
    Option          "FingerHigh" "10"
    Option          "VertScrollDelta" "-111"
    Option          "HorizScrollDelta" "-111"
EndSection
Section "Device"
    Identifier      "Intel Graphics"
    Driver          "intel"
    Option          "TearFree" "true"
EndSection
    '';
  };
  hardware.opengl.driSupport32Bit = true;
  # Chromebook c720p junk ends

  nixpkgs.config.allowUnfree = true;

  # The NixOS release to be compatible with for stateful data such as databases.
  system.stateVersion = "16.03";

}