anchor.diff:      internal = true;
       type = types.bool;
       default = false;
  -    description = ''
  +    description = lib.mdDoc ''
         Disable nixos-rebuild, nixos-generate-config, nixos-installer
         and other NixOS tools. This is useful to shrink embedded,
         read-only systems which are not expected to be rebuild or
  
positive.code:       internal = true;
        type = types.listOf types.lines;
        default = [];
        description = ''
          Text to preseed the desktop configuration that <literal>nixos-generate-config</literal>
          saves to <literal>/etc/nixos/configuration.nix</literal>.
  
          This is an internal option. No backward compatibility is guaranteed.
          Use at your own risk!
  
          Note that this string gets spliced into a Perl script. The perl
          variable <literal>$bootLoaderConfig</literal> can be used to
          splice in the boot loader configuration.
        '';
      };
  
negative.code:     configuration = mkOption {
        internal = true;
        type = types.str;
        description = lib.mdDoc ''
          The NixOS module that `nixos-generate-config`
          saves to `/etc/nixos/configuration.nix`.
  
          This is an internal option. No backward compatibility is guaranteed.
          Use at your own risk!
  
          Note that this string gets spliced into a Perl script. The perl
          variable `$bootLoaderConfig` can be used to
          splice in the boot loader configuration.
        '';
      };
  