Nix modular configuration

base-configuration.nix

{ config, pkgs, ... }:

{
  imports =
    [ # Include the results of the hardware scan.
    /etc/nixos/hardware-configuration.nix
    ];
  
  # Use the GRUB 2 boot loader.  
  boot.loader.grub.enable = true;
  boot.loader.grub.version = 2;

  networking.firewall = {
    enable = true;
    allowedUDPPorts = [ 61501 61502 61503 61504 ];
  };

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

  # List services that you want to enable:
  services = {

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

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

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

  # Display manager configuration
      displayManager.slim.enable = true;

  # Enable the i3 window manager.
      windowManager.i3.enable = true;
      windowManager.default = "i3";
    };

  # Enable synergy!
    synergy.client = {
      enable = true;
      autoStart = true;
      screenName = "nox";
      serverAddress = "192.168.200.86";
    };
  };

  users.defaultUserShell = "/var/run/current-system/sw/bin/fish";

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.extraUsers.m = {
    name = "m";
    group = "users";
    uid = 1000;
    createHome = true;
    home = "/home/m";
    extraGroups = [ "wheel" "audio" "video" "power" ];
    shell = "/var/run/current-system/sw/bin/fish";
    openssh.authorizedKeys.keys = [ "<REMOVED>" ];
  }

  time.timeZone = "Europe/Berlin";

  nixpkgs.config.packageOverrides = pkgs: {
    packageSets = {
      inherit (pkgs);

      basePackageSet = {
        inherit (pkgs)
          acpid
          acpitool
          bashCompletion
          coreutils
          lsof
          man
          mosh
          file
          powertop
          ruby
          stdmanpages
          tcpdump
          tmux
          nmap
          # openvpn
          unrar
          vim
          w3m
          wget
          which
          zip
          ;
      };

      desktopPackageSet = {
        inherit (pkgs)
          dmenu # for i3
          # docker
          dwb
          # easytag
          feh
          fish
          gnupg
          htop
          imagemagick
          mplayer
          # mutt
          chromiumWrapper
          rxvt_unicode
          scrot
          unetbootin
          vlc
          # wireshark
          xpdf
          zathura
          ;
      };

      devPackageSet = {
        inherit (pkgs)
          vim
          git
          tig
          ;
      };

    };
  };
}

nox.nix

{ config, pkgs, ... }:

let
  configDir = /home/m/config/nixos;
  packages = packageSets.basePackageSet // packageSets.desktopPackageSet // packageSets.devPackageSet;
in

{
  imports = [
      "${configDir}/base-configuration.nix"
  ];

  # Define on which hard drive you want to install Grub.
  boot.loader.grub.device = "/dev/sda";

  # Additional FS
  fileSystems."/home" = {
    device = "/dev/sda6";
    fsType = "ext4";
  };

  networking.hostName = "nox";
  networking.wireless.enable = true;

  nixpkgs.config = {
    allowUnfree = true;

  # Overrides for chromium, as stated in http://nixos.org/wiki/Enable_Browser_Plugins
    chromium = {
      enablePepperFlash = true; # Chromium removed support for Mozilla (NPAPI) plugins so Adobe Flash no longer works
        enablePepperPDF = true;
    };
  };

  environment.systemPackages = pkgs.lib.attrValues packages;

}