{ config, pkgs, ... }:

{ services.xserver = {
    enable = true;
    enableCtrlAltBackspace = true;
    exportConfiguration = true;
  };

  services.dbus.socketActivated = true;

  environment.sessionVariables = {
    XCURSOR_PATH = [
      "${config.system.path}/share/icons"
      "$HOME/.icons"
      "$HOME/.nix-profile/share/icons/"
    ];
  };

  environment.systemPackages = with pkgs; [
    xorg.xmodmap
    xorg.xinit
    xorg.xev
    xorg.xdpyinfo
    xclip
    xfontsel

    vanilla-dmz

    hicolor_icon_theme
    adapta-gtk-theme
    flat-plat
    paper-gtk-theme
    paper-icon-theme

    arc-icon-theme
    tango-icon-theme

    gtk-engine-murrine
    gtk_engines
  ];

  fonts = {
    enableFontDir = true;
    enableDefaultFonts = true;
    fontconfig = {
      defaultFonts = {
        monospace = [ "Liberation Mono" ];
        sansSerif = [ "Liberation Sans" ];
        serif = [ "Liberation Serif" ];
      };
      ultimate = {
        enable = true;
        # presets:
        # ultimate1 ultimate2 ultimate3 ultimate4 ultimate5 osx windowsxp
        preset = "ultimate3";
      };
    };
    fonts = with pkgs; [
      cantarell_fonts
      carlito
      dejavu_fonts
      fantasque-sans-mono
      fira
      fira-code
      fira-mono
      font-droid
      font-awesome-ttf
      hack-font
      liberation_ttf
      mononoki
      (nerdfonts.override {
        withFont = "Monoid";
      })
      opensans-ttf
      paratype-pt-mono
      paratype-pt-sans
      paratype-pt-serif
      roboto
      roboto-mono
      roboto-slab
      source-code-pro
      source-sans-pro
      source-serif-pro
      terminus_font
      xorg.fontxfree86type1
    ];
  };
}