{pkgs, ...}: {
  environment = {
    budgie.excludePackages = with pkgs; [
      qogir-theme
      qogir-icon-theme

      # i don't like mates apps. fedora doesn't use them either :/
      mate.atril
      mate.pluma
      mate.engrampa
      mate.mate-calc
      mate.mate-terminal
      mate.mate-system-monitor
      vlc
    ];

    systemPackages = with pkgs; [
      materia-theme
      papirus-icon-theme

      # replacements for mate stuff
      evince
      gedit
      cinnamon.nemo-fileroller
      gnome.gnome-calculator
      blackbox-terminal
      gnome.gnome-system-monitor
      celluloid
    ];
  };

  services.xserver = {
    displayManager.lightdm.greeters.slick = {
      theme = {
        name = "Materia-dark";
        package = pkgs.materia-theme;
      };
      iconTheme = {
        name = "Papirus-Dark";
        package = pkgs.papirus-icon-theme;
      };
    };

    desktopManager.budgie = {
      enable = true;
      extraGSettingsOverrides = ''
        [org.gnome.desktop.interface:Budgie]
        color-scheme='prefer-dark'
        gtk-theme='Materia-dark'
        icon-theme='Papirus-Dark'
      '';
    };
  };
}