{ inputs, ... }: {

  xdg.enable = true;
  xdg.mime.enable = true;

  # make linux gui apps appear in chromeos launcher
  xdg.configFile."systemd/user/cros-garcon.service.d/override.conf".text = ''
    [Service]
    Environment="PATH=%h/.nix-profile/bin:/usr/local/sbin:/usr/local/bin:/usr/local/games:/usr/sbin:/usr/bin:/usr/games:/sbin:/bin"
    Environment="XDG_DATA_DIRS=/nix/var/nix/profiles/default/share:%h/.nix-profile/share:%h/.local/share:/usr/local/share:/usr/share:/var/lib/snapd/desktop:%h/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share"
  '';

  # make linux gui title bars not quite so bright
  xdg.configFile."systemd/user/sommelier-x@0.service.d/override.conf".text = ''
    [Service]
    Environment="SOMMELIER_FRAME_COLOR=#313244"
  '';

  # activate NixGL wrapper for Crostini
  nixGL.packages = inputs.nixgl.packages;
  nixGL.defaultWrapper = "mesa";
  # to use:
  # programs.example.package = (config.lib.nixGL.wrap pkgs.example);
  # or:
  # home.packages = with pkgs; [ (config.libnixGL.wrap example); ];
}