{ pkgs, ... }: {
  environment.systemPackages = with pkgs; [ looking-glass-client ];
  systemd.tmpfiles.rules = [ "f /dev/shm/looking-glass 0660 1000 libvirtd" ];
}

final: prev: {
  __dontExport = true;
  looking-glass-client = prev.looking-glass-client.overrideAttrs (finalAttrs: prevAttrs: {
    version = "B6";
    src = final.fetchFromGitHub {
      owner = "gnif";
      repo = "LookingGlass";
      rev = "B6";
      fetchSubmodules = true;
      hash = "sha256-6vYbNmNJBCoU23nVculac24tHqH7F4AZVftIjL93WJU=";
    };
    buildInputs = prevAttrs.buildInputs ++ (with final; [
      pipewire
      libpulseaudio
      libsamplerate
      xorg.libXdmcp
    ]);
  });
}

    hardware.nvidia

    graphical.looking-glass-client