anchor.diff:  
       title Memtest86+
         kernel /boot/memtest.bin
  -  '';
  +  '' 
  +    + (pkgs.lib.concatStringsSep "\n\n" 
  +        (map (x: ''
  +	  title NixOS: ${x.configurationName}
  +	    kernel ${x.kernel} systemConfig=${x} init=${x.bootStage2} ${toString system.config.boot.kernelParams}
  +	    initrd ${x.initrd}
  +	'') system.children)))
  +    ;
   
   
     # Create an ISO image containing the Grub boot loader, the kernel,
  
positive.code:       { object = pkgs.stdenv;
          symlink = "none";
        }
      ];
      
      bootable = true;
      bootImage = "boot/grub/stage2_eltorito";
  
negative.code:           ";
          }
        
        ];
  
        mingetty = {
          helpLine = ''
  