nixfiles/configuration/desktop/audio.nix

{ ... }:

{

  hardware.pulseaudio.enable = false;

  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa = {
      enable = true;
      support32Bit = true;
    };
    pulse = {
      enable = true;
    };
  };

}