music-server/modules/nfs.nix

{
  services.nfs.server = {
    enable = true;
    exports = {
      "/media/music" = {
        "192.168.132.0/24" = [
          "rw"
          "async"
          "no_subtree_check"
          "fsid=1"
        ];
      };
    };
  };
}