anchor.diff:  }:
   
   let
  -  id = "4179";
  -  version = "1.8.18";
  +  id = "4203";
  +  version = "1.8.20";
   
     tarballUrls = id: version: [
       "https://alioth.debian.org/frs/download.php/file/${id}/pcsc-lite-${version}.tar.bz2"
  
positive.code:   passthru = {
      srcVerification = fetchurl rec {
        failEarly = true;
        urls = tarballUrls "4179" "1.8.18";
        pgpsigUrls = map (n: "${n}.asc") (tarballUrls "4180" "1.8.18");
        pgpKeyFingerprint = "F5E1 1B9F FE91 1146 F41D  953D 78A1 B4DF E8F9 C57E";
        inherit (src) outputHashAlgo;
        outputHash = "b22d32b018f6a1016adba91abfcc63876cca999daa472dd86e953ddd41d00905";
  
negative.code:   src = fetchurl {
      urls = tarballUrls id version;
      hashOutput = false;
      multihash = "QmbPXMUFauSyofLi1Rn3mp52vhAoqYteQWqWdVEysh5AtP";
      sha256 = "ec7d0114016c788c1c09859c84860f6cec6c4595436d23245105154b9c046bb2";
    };
  
    nativeBuildInputs = optionals (!libOnly) [
  