anchor.diff:    passthru = {
       srcVerification = fetchurl rec {
         failEarly = true;
  -      urls = tarballUrls "2.2.15";
  -      sha256 = "cb8ce298d7b36558ffc48aec961b14c830ff1783eef7a623411188b5e0f5d454";
  +      urls = tarballUrls "2.2.16";
  +      sha256 = "6cbe8d454bf5dc204621eed3016d721b66298fa95363395bb8eeceb1d2fd14cb";
         fullOpts = {
           pgpsigUrl = map (n: "${n}.sig") urls;
           pgpKeyFingerprints = [
  
positive.code:   src = fetchurl {
      urls = tarballUrls version;
      hashOutput = false;
      sha256 = "cb8ce298d7b36558ffc48aec961b14c830ff1783eef7a623411188b5e0f5d454";
    };
  
    nativeBuildInputs = [
  
negative.code:     readline
      sqlite
      zlib
    ];
  
    postPatch = ''
  