anchor.diff:  }:
   
   let
  -  version = "0.11.0";
  +  version = "0.12.0";
   in
   stdenv.mkDerivation rec {
     name = "thrift-${version}";
  
positive.code:   passthru = {
      srcVerification = fetchurl {
        failEarly = true;
        pgpsigUrls = map (n: "${n}.asc") src.urls;
        pgpKeyFingerprints = [
          # Jake Farrell
          "9782 694B 8B54 B4AD D345  E52A BB06 368F 66B7 78F9"
          # Jens Geyer
          "8CD8 7F18 6F06 E958 EFCA  963D 76BD 340F C4B7 5865"
        ];
        inherit (src) urls outputHash outputHashAlgo;
      };
    };
  
  
negative.code:   src = fetchurl {
      url = "mirror://apache/thrift/${version}/${name}.tar.gz";
      hashOutput = false;
      sha256 = "c336099532b765a6815173f62df0ed897528a9d551837d627c1f87fadad90428";
    };
  
    buildInputs = [
  