configuration.nix for 3.18.7 kernel

# 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, ... }:

let
  # Run a kernel that is a bit more recent than what's available in the stable
  # channel on 2015-02-19.
  #
  # NOTE: The overrideDerivation function was found in the
  # "Override a package's attributes" example on the "Nix Modifying Packages" page.
  # https://nixos.org/wiki/Nix_Modifying_Packages
  #
  customLinuxConfig =
  pkgs.stdenv.lib.overrideDerivation pkgs.linux_3_18 (
    oldAttrs: rec {

      version = "3.18.7-custom";
      name = "linux-${version}";
      #extraMeta.branch = "3.18";

      src = pkgs.fetchurl {
        url = "mirror://kernel/linux/kernel/v3.x/linux-3.18.7.tar.xz";
        sha256 = "08gl48x9fim8b8icsardp18vckzmi411kwkaswlznmr67gfz89yz";
      };

      #Lines taken from nixpkgs/pkgs/os-specific/linux/kernel/linux-3.18.nix
      features = {
        iwlwifi = true;
        efiBootStub = true;
        needsCifsUtils = true;
        canDisableNetfilterConntrackHelpers = true;
        netfilterRPFilter = true;
        outPath = "features";
      };
    }
  );
  linuxPackages_3_18_7_custom = pkgs.recurseIntoAttrs (
    pkgs.linuxPackagesFor customLinuxConfig linuxPackages_3_18_7_custom);
in
{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
    ];

  # Shell script code called during global environment initialisation after all
  # variables and profileVariables have been set. This code is asumed to be
  # shell-independent, which means you should stick to pure sh without sh word
  # split.
  environment.variables = { NIXPKGS_HEAD = "/root/nixpkgs"; };
  environment.shellAliases = { ll = "ls -l"; };

  # Use the gummiboot efi boot loader.
  boot.loader.gummiboot.enable = true;
  boot.loader.gummiboot.timeout = 10;
  boot.loader.efi.canTouchEfiVariables = true;

  # NOTE: The below preemptive comments were inaccurate because disabling
  #   systemd-udev-settle does not actually fix the boot hang.
  #
  # We prevent systemd-udev-settle.service from running because it causes boot
  # to fail when the system is booting from an SSD.
  # This service is used for LVM systems, so if this configuration needs to
  # run on an LVM using machine, then this line should be commented out.  If
  # both SSD booting and LVM are required, it may be necessary to obtain
  # a different version of systemd or a new kernel.
  # The below archlinux thread suggests that updating acpid can fix the
  # problem without disabling/masking udev-settle, but at the time of this
  # writing, acpid doesn't appear to be installed at all.
  #
  # References:
  #   https://bbs.archlinux.org/viewtopic.php?id=189106
  #   nixos/blob/master/modules/system/boot/systemd.nix
  # Versions at time of writing:
  #   kernel  = 3.18.7
  #   systemd = systemd-217
  #   acpid   = not installed
  systemd.units.systemd-udev-settle.enable = false;


  ## This didn't work, because linuxPackages_custom isn't defined yet in
  ## NixOS-14.12.
  #boot.kernelPackages = pkgs.linuxPackages_custom {
  #  version = "3.18.7-custom";
  #  #extraMeta.branch = "3.18-custom";
  #  src = pkgs.fetchurl {
  #    url = "mirror://kernel/linux/kernel/v3.x/linux-3.18.7.tar.xz";
  #    sha256 = "08gl48x9fim8b8icsardp18vckzmi411kwkaswlznmr67gfz89yz";
  #  };
  #
  #  #Lines taken from nixpkgs/pkgs/os-specific/linux/kernel/linux-3.18.nix
  #  features.iwlwifi = true;
  #  features.efiBootStub = true;
  #  features.needsCifsUtils = true;
  #  features.canDisableNetfilterConntrackHelpers = true;
  #  features.netfilterRPFilter = true;
  #};

  ## Run a kernel that is a bit more recent than what's available in the stable
  ## channel on 2015-02-19.
  #boot.kernelPackages = linuxPackages_3_18_7_custom;
  boot.initrd.kernelModules = [ "fbcon" ];

  # networking.hostName = "nixos"; # Define your hostname.
  networking.hostName = "tvbox"; # Define your hostname.
  networking.hostId = "57c04a12";
  # networking.wireless.enable = true;  # Enables wireless.

  # Select internationalisation properties.
  # i18n = {
  #   consoleFont = "lat9w-16";
  #   consoleKeyMap = "us";
  #   defaultLocale = "en_US.UTF-8";
  # };

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

  # 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.enable = true;
  services.xserver.layout = "us";
  # services.xserver.xkbOptions = "eurosign:e";

  # Enable the KDE Desktop Environment.
  services.xserver.displayManager.kdm.enable = true;
  services.xserver.desktopManager.kde4.enable = true;

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

  users.extraUsers.tvbox =
  {
    isNormalUser = true;
    home = "/home/tvbox";
    password = "tvbox";
    description = "Account used to interact with MythTV/Kodi and play games.";
    extraGroups = [ "tvbox" "wheel" "video" "audio" "cdrom" ];
    #openssh.authorizedKeys.keys = [ "ssh-dss AAAAB3Nza... tvbox@foobar" ];
  };

  users.extraGroups.tvbox = { members = [ "tvbox" ]; };

  # From https://nixos.org/wiki/Enable_Browser_Plugins
  # In NixOS you can configure nixpkgs options by adding a nixpkgs.config
  # section to /etc/nixos/configuration.nix. This has no effect on nix-env
  # commands but does apply to packages installed via the
  #   environment.systemPackages
  # list. [...]
  nixpkgs.config = {

    allowUnfree = true;

    firefox = {
      enableGoogleTalkPlugin = true;
      enableAdobeFlash = true;
      icedtea = true;
      #jre = true;
    };

    chromium = {
      enablePepperFlash = true; # Chromium removed support for Mozilla (NPAPI) plugins so Adobe Flash no longer works
      enablePepperPDF = true;
      icedtea = true;
      #jre = true;
    };

  };

  # This is a list of softwate installed in the "core" system.
  # It is similar to the "world" file in Gentoo, with the exception that there
  # are other, per-user, roots for installed packages.  This is due to NixOS's
  # ability to allow users to install packages that are isolated to the user's
  # own environment.
  #
  # Thus, there are two idiomatic ways to install software:
  # (1) Add the package to environment.systemPackages, then run "nixos-rebuild switch".
  # (2) Run "nix-env -i <package-name>".
  # The nix-env option, (2), is per-user, though packages installed by root
  # in this fashion appear to be usable by all users.
  # Packages installed by method (2) will also NOT be reflected in the
  # environment.systemPackages variable.  They can be enumerated by running
  # "nix-env -q" while logged in as that user.
  #
  # More detailed documentation and comparison between (1) and (2) can be found here:
  #   https://nixos.org/wiki/Install/remove_software
  #
  environment.systemPackages = [

  # KDE packages
  pkgs.kde4.kdemultimedia     pkgs.kde4.kdegraphics       pkgs.kde4.kdeutils          pkgs.kde4.applications
  pkgs.kde4.kdegames          pkgs.kde4.kdeedu            pkgs.kde4.kdebindings       pkgs.kde4.kdeaccessibility
  pkgs.kde4.kde_baseapps      pkgs.kde4.kactivities       pkgs.kde4.kdeadmin          pkgs.kde4.kdeartwork
  pkgs.kde4.kde_base_artwork  pkgs.kde4.kdenetwork        pkgs.kde4.kdepim            pkgs.kde4.kdepimlibs
  pkgs.kde4.kdeplasma_addons  pkgs.kde4.kdesdk            pkgs.kde4.kdetoys           pkgs.kde4.kde_wallpapers
  pkgs.kde4.kdewebdev         pkgs.kde4.oxygen_icons      pkgs.kde4.kdebase_workspace pkgs.kde4.kdelibs
  pkgs.kde4.kdevelop          pkgs.kde4.kdevplatform

  # Browsers
  # TODO: It would be nice if the configuration could cause add-ons to
  # be installed, such as:
  # - Tab Mix Plus
  # - Textarea Cache
  # - Adblock Plus
  pkgs.firefoxWrapper pkgs.chromium

  # Make NixOS use OpenJDK (IcedTea) instead of Oracle JDK/JRE.
  # (Actually, this doesn't work; it will try to use Oracle JDK anyways.)
  #pkgs.jdk

  # As of 2015-Feb-14, 'grep -P' is very broken.
  # It will easily fail with a message about there being an invalid UTF-8 sequence in the input.
  # As an alternative, we install 'ack'.
  pkgs.ack

  # MythTV related.
  # NOTE: pkgs.kodi is not available in the current version of NixOS (14.12.374.61adf9e Caterpillar).
  # pkgs.kodi
  pkgs.mythtv

  # Other miscellaneous useful things.
  pkgs.gitAndTools.gitFull
  ];
}