{ config, pkgs, ... }:

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

    vanilla-dmz

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

    gtk-engine-murrine
    gtk_engines
  ];

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