anchor.diff:  { config, pkgs, ... }:
  -
  -with pkgs.lib;
  +  with pkgs.lib;
   
   let
  -
     cfg = config.services.couchdb;
     configFile = pkgs.writeText "couchdb.ini"
       ''
  
positive.code:         default = "couchdb";
          description = ''
            Group account under which couchdb runs.
          '';
        };
  
        pidFile = mkOption {
          type = types.path;
          default = "/var/run/couchdb/couchdb.pid";
          description = ''
            pid file.
          '';
        };
  
  
negative.code:       [log]
        file = ${cfg.logFile}
      '';
  
  in {
  
    ###### interface
  
  