anchor.diff:    passthru = {
       srcVerification = fetchurl rec {
         failEarly = true;
  -      urls = tarballUrls "4225" "1.8.22";
  -      pgpsigUrls = map (n: "${n}.asc") (tarballUrls "4226" "1.8.22");
  +      urls = tarballUrls "4235" "1.8.23";
  +      pgpsigUrls = map (n: "${n}.asc") (tarballUrls "4236" "1.8.23");
         pgpKeyFingerprint = "F5E1 1B9F FE91 1146 F41D  953D 78A1 B4DF E8F9 C57E";
         inherit (src) outputHashAlgo;
         outputHash = "6a358f61ed3b66a7f6e1f4e794a94c7be4c81b7a58ec360c33791e8d7d9bd405";
  
positive.code: }:
  
  let
    id = "4225";
    version = "1.8.22";
  
    tarballUrls = id: version: [
      "https://alioth.debian.org/frs/download.php/file/${id}/pcsc-lite-${version}.tar.bz2"
  
negative.code: 
    src = fetchurl {
      urls = tarballUrls id version;
      multihash = "QmQ1Zf2kegxhjFSSsKRvEagDjPim4fkZoGA299pbmRTKac";
      hashOutput = false;
      sha256 = "5a27262586eff39cfd5c19aadc8891dd71c0818d3d629539bd631b958be689c9";
    };
  
    nativeBuildInputs = optionals (!libOnly) [
  