anchor.diff:      org.neo4j.server.webadmin.rrdb.location=${cfg.dataDir}/data/rrd
       org.neo4j.server.webadmin.data.uri=/db/data/
       org.neo4j.server.webadmin.management.uri=/db/manage/
  -    org.neo4j.server.db.tuning.properties=${pkgs.neo4j}/share/neo4j/conf/neo4j.properties
  +    org.neo4j.server.db.tuning.properties=${cfg.package}/share/neo4j/conf/neo4j.properties
       org.neo4j.server.manage.console_engines=shell
       ${cfg.extraServerConfig}
     '';
  
positive.code:       after = [ "network-interfaces.target" ];
        environment = { NEO4J_INSTANCE = cfg.dataDir; };
        serviceConfig = {
          ExecStart = "${pkgs.neo4j}/bin/neo4j console";
          User = "neo4j";
          PermissionsStartOnly = true;
        };
  
negative.code:       description = "Whether to enable neo4j.";
        default = false;
        type = types.uniq types.bool;
      };
  
      package = mkOption {
        description = "Neo4j package to use.";
        default = pkgs.neo4j;
        type = types.package;
      };
  
      host = mkOption {
  