anchor.diff:      inherit grubMenuBuilder;
       inherit etc;
       inherit systemPath;
  +    inherit children;
  +    inherit configurationName;
       kernel = kernel + "/vmlinuz";
       initrd = initialRamdisk + "/initrd";
       # Most of these are needed by grub-install.
  
positive.code:       pkgs.upstart # for initctl
      ];
      upstartInterfaceVersion = pkgs.upstart.interfaceVersion;
      # This attribute is responsible for creating boot entries for 
      # child configuration. They are only (directly) accessible
      # when the parent configuration is boot default. For example,
      # you can provide an easy way to boot the same configuration 
      # as you use, but with another kernel
      children = map (x: ((import ./system.nix) 
        { inherit platform; 
          configuration = x//{boot=((x.boot)//{grubDevice = "";});};}).system) 
        config.nesting.children; 
      configurationName = config.boot.configurationName;
    }) config.environment.checkConfigurationOptions
       optionDeclarations config;
  
  
negative.code:   # system configurations.
    grubMenuBuilder = config.system.build.grubMenuBuilder;
  
    # This attribute is responsible for creating boot entries for 
    # child configuration. They are only (directly) accessible
    # when the parent configuration is boot default. For example,
    # you can provide an easy way to boot the same configuration 
    # as you use, but with another kernel
    children = map (x: ((import ./system.nix) 
      { inherit platform; 
        configuration = x//{boot=((x.boot)//{grubDevice = "";});};}).system) 
      config.nesting.children; 
    configurationName = config.boot.configurationName;
  
    # Putting it all together.  This builds a store object containing
    # symlinks to the various parts of the built configuration (the
  