anchor.diff:        };
   
         user = mkOption {
  +        type = types.str;
           default = "cgminer";
           description = "User account under which cgminer runs";
         };
   
         pools = mkOption {
           default = [];  # Run benchmark
  +        type = types.listOf (types.attrsOf types.str);
           description = "List of pools where to mine";
           example = [{
             url = "http://p2pool.org:9332";
  
positive.code: 
        hardware = mkOption {
          default = []; # Run without options
          description= "List of config options for every GPU";
          example = [
          {
  
negative.code: 
        config = mkOption {
          default = {};
          type = (types.either types.bool types.int);
          description = "Additional config";
          example = {
            auto-fan = true;
  