anchor.diff:  }:
   
   let
  -  version = "2.0.0";
  +  version = "2.0.1";
   in
   stdenv.mkDerivation rec {
     name = "libjpeg-turbo-${version}";
  
positive.code:   src = fetchurl {
      url = "mirror://sourceforge/libjpeg-turbo/${version}/${name}.tar.gz";
      hashOutput = false;
      sha256 = "778876105d0d316203c928fd2a0374c8c01f755d0a00b12a1c8934aeccff8868";
    };
  
    nativeBuildInputs = [
  
negative.code: 
      srcVerification = fetchurl {
        failEarly = true;
        inherit (src)
          urls
          outputHash
          outputHashAlgo;
        fullOpts = {
          pgpsigUrls = map (n: "${n}.sig") src.urls;
          pgpKeyFingerprint = "7D62 93CC 6378 786E 1B5C  4968 85C7 044E 033F DE16";
        };
      };
    };
  
  