configuration.nix file for NixOS on my macbook pro

configuration.nix

{ config, pkgs, ... }:

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

    ];

  time.timeZone = "America/Chicago";
  boot = {
    cleanTmpDir = true;
    kernelPackages = pkgs.linuxPackages_4_3;
    kernelParams = [
    # https://help.ubuntu.com/community/AppleKeyboard
    # https://wiki.archlinux.org/index.php/Apple_Keyboard
    "hid_apple.fnmode=1"
    "hid_apple.iso_layout=0"
    "hid_apple.swap_opt_cmd=1"
  ];
    loader = {
      # I'm on an EFI-only system (mac book pro 9.2)
      gummiboot.enable = true;
      gummiboot.timeout = 4;
      efi.canTouchEfiVariables = true;
    };
  };

  system.stateVersion = "16.03";

  networking.hostName = "nixos";

  # I use a desktop manager with NetworkManager
  # networking.wireless.enable = true;
  networking.networkmanager.enable = true;

  i18n = {
     defaultLocale = "en_US.UTF-8";
  };

  environment.systemPackages = with pkgs; [
     ack
     chromium
     coreutils
     cryptsetup
     docker
     dropbox
     emacs # see below for my own definition of Emacs
     ffmpeg
     file
     filezilla
     firefoxWrapper
     steam
     ghostscript # to manipulate pdf files
     gimp
     gitAndTools.gitFull
     glib # for gsettings
     gnumake
     gnupg
     gparted
     haskellPackages.pandoc
     htop
     inetutils
     inkscape
     silver-searcher
     nmap
     skype
     vlc
     subversion
     wget
     which
     zip
   ];

  services = {
    openssh.enable = true;
    
    #postgresql
    postgresql.enable = true;
    postgresql.package = pkgs.postgresql94;

    # Locate will update its database everyday at lunch time
    locate.enable = true;
    locate.period = "00 12 * * *";


    xserver = {
      enable = true;
      autorun = false;
      synaptics = {
        enable = true;
        twoFingerScroll = true;
        buttonsMap = [ 1 3 2 ];
        tapButtons = false;
        accelFactor = "0.0055";
        minSpeed = "0.95";
        maxSpeed = "1.15";
        palmDetect = true;
      };

      # https://github.com/NixOS/nixpkgs/issues/4416
      displayManager.desktopManagerHandlesLidAndPower = false;

      # This is the way to activate some Gnome 3 modules
      xkbOptions = "ctrl:nocaps"; # overriden by gnome (must be set using gnome tweak tool)

    };

  };
  powerManagement.enable = true;
  
  nixpkgs.config = {
    allowUnfree = true;
    firefox = {
      enableGoogleTalkPlugin = true;
      enableAdobeFlash = true;
    };
   };

  # The wifi broadcom driver 
  networking.enableB43Firmware = true;

  # Make sure the only way to add users/groups is to change this file
  users.mutableUsers = false;

  # Add myself as a super user
  users.extraUsers.dmj = {
    createHome = true;
    home = "/home/dmj";
    description = "David Johnson";
    extraGroups = [ "wheel" "networkmanager" "docker" ];
    useDefaultShell = true;
    uid = 1000;
  };

  # Add fonts
  fonts = {
    enableFontDir = true;
    enableGhostscriptFonts = true;
    fonts = with pkgs; [
      corefonts # Microsoft free fonts
      inconsolata # monospaced
      ubuntu_font_family
      dejavu_fonts
    ];
  };


  # Fix problem with Emacs tramp (https://github.com/NixOS/nixpkgs/issues/3368)
  programs.bash = {
    promptInit = "PS1=\"# \"";
    enableCompletion = true;
  };

  # Create a systemd user service for emacs daemon. This is useful because
  # systemd will take care of launching emacs in the background and I
  # will just have to connect to it through emacs-client. This is a
  # user service. This means I have to pass the "--user" option to
  # systemd when I want to control the service.
  systemd.user.services.emacs = {
    description                 = "Emacs: the extensible, self-documenting text editor";


    serviceConfig               = {
      Type      = "forking";
      ExecStart = "${pkgs.emacs}/bin/emacs --daemon";
      ExecStop  = "${pkgs.emacs}/bin/emacsclient --eval (kill-emacs)";
      Restart   = "always";
    };

    # I want the emacs service to be started with the rest of the user services
    wantedBy = [ "default.target" ];

  };

}