anchor.diff:            efi    /efi/memtest86/BOOTX64.efi
           '';
         })
  +      (mkIf cfg.netbootxyz.enable {
  +        "${cfg.netbootxyz.entryFilename}" = ''
  +          title  netboot.xyz
  +          efi    /efi/netbootxyz/netboot.xyz.efi
  +        '';
  +      })
       ];
   
       system = {
  
positive.code: 
        entryFilename = mkOption {
          default = "memtest86.conf";
          type = types.str;
          description = ''
            <literal>systemd-boot</literal> orders the menu entries by the config file names,
  
negative.code:     inherit (efi) efiSysMountPoint canTouchEfiVariables;
  
      memtest86 = if cfg.memtest86.enable then pkgs.memtest86-efi else "";
  
      netbootxyz = if cfg.netbootxyz.enable then pkgs.netbootxyz-efi else "";
  
      copyExtraFiles = pkgs.writeShellScript "copy-extra-files" ''
        empty_file=$(mktemp)
  