anchor.diff:        unpackPhase = "true";
         buildInputs = [ unzip ];
         meta = a.meta // {
  -        platforms = elasticsearch.meta.platforms;
  +        platforms = elasticsearch-oss.meta.platforms;
           maintainers = (a.meta.maintainers or []) ++ [ maintainers.offline ];
         };
       });
  
positive.code: { pkgs,  stdenv, fetchurl, unzip, elasticsearch }:
  
  with pkgs.lib;
  
  
negative.code:   esPlugin = a@{
      pluginName,
      installPhase ? ''
        mkdir -p $out/config
        mkdir -p $out/plugins
        ES_HOME=$out ${elasticsearch-oss}/bin/elasticsearch-plugin install --batch -v file://$src
      '',
      ...
    }:
  