anchor.diff:        enable = mkEnableOption "the Firebird super server";
   
         package = mkOption {
  -        default = pkgs.firebirdSuper;
  -        defaultText = "pkgs.firebirdSuper";
  +        default = pkgs.firebird;
  +        defaultText = "pkgs.firebird";
           type = types.package;
  -        /*
  -          Example: <code>package = pkgs.firebirdSuper.override { icu =
  -            pkgs.icu; };</code> which is not recommended for compatibility
  -            reasons. See comments at the firebirdSuper derivation
  -        */
  -
  +        example = ''
  +          <code>package = pkgs.firebird_3;</code>
  +        '';
           description = ''
  -          Which firebird derivation to use.
  +          Which Firebird package to be installed: <code>pkgs.firebird_3</code>
  +          For SuperServer use override: <code>pkgs.firebird_3.override { superServer = true; };</code>
           '';
         };
   
  
positive.code:       };
  
        baseDir = mkOption {
          default = "/var/db/firebird"; # ubuntu is using /var/lib/firebird/2.1/data/.. ?
          type = types.str;
          description = ''
            Location containing data/ and system/ directories.
  
negative.code:           ''
              if ! test -e "${systemDir}/security2.fdb"; then
                  cp ${firebird}/security2.fdb "${systemDir}"
              fi
  
              if ! test -e "${systemDir}/security3.fdb"; then
                  cp ${firebird}/security3.fdb "${systemDir}"
              fi
  
              if ! test -e "${systemDir}/security4.fdb"; then
                  cp ${firebird}/security4.fdb "${systemDir}"
              fi
  
              chmod -R 700         "${dataDir}" "${systemDir}" /var/log/firebird
  