anchor.diff:          description = ''
             The contents of the configuration file of the CUPS daemon
             (<filename>cupsd.conf</filename>).
  +        '';
  +      };
  +
  +      drivers = mkOption {
  +        example = [ pkgs.splix ];
  +        description = ''
  +          CUPS drivers (CUPS, gs and samba are added unconditionally).
           '';
         };
   
  
positive.code:         exec = "${cups}/sbin/cupsd -c ${pkgs.writeText "cupsd.conf" cfg.cupsdConf} -F";
        };
  
      services.printing.cupsdConf = 
        ''
          LogLevel info
  
negative.code:         ServerRoot /etc/cups
  
          ServerBin ${bindir}/lib/cups
          DataDir ${bindir}/share/cups
  
          AccessLog ${logDir}/access_log
          ErrorLog ${logDir}/error_log
  