libjack2 doesn't cross-compile, see https://github.com/NixOS/nixpkgs/issues/96548. The pulseaudio NixOS module uses pkgs.alsaPlugins to create its asound.conf, so let's make sure that one can be built when cross-compiling.
libjack2 doesn't cross-compile, see https://github.com/NixOS/nixpkgs/issues/96548. The pulseaudio NixOS module uses pkgs.alsaPlugins to create its asound.conf, so let's make sure that one can be built when cross-compiling.