anchor.diff:          exec = "${cups}/sbin/cupsd -c ${pkgs.writeText "cupsd.conf" cfg.cupsdConf} -F";
         };
   
  +    services.printing.drivers = [ pkgs.cups pkgs.ghostscript ];
       services.printing.cupsdConf = 
         ''
           LogLevel info
  
positive.code:         ServerRoot /etc/cups
  
          ServerBin ${bindir}/lib/cups
  
          AccessLog ${logDir}/access_log
          ErrorLog ${logDir}/error_log
  
negative.code:         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).
          '';
        };
  
  