anchor.diff:    passthru = {
       srcVerification = fetchurl rec {
         failEarly = true;
  -      urls = tarballUrls "4216" "1.8.21";
  -      pgpsigUrls = map (n: "${n}.asc") (tarballUrls "4217" "1.8.21");
  +      urls = tarballUrls "4225" "1.8.22";
  +      pgpsigUrls = map (n: "${n}.asc") (tarballUrls "4226" "1.8.22");
         pgpKeyFingerprint = "F5E1 1B9F FE91 1146 F41D  953D 78A1 B4DF E8F9 C57E";
         inherit (src) outputHashAlgo;
  -      outputHash = "fe3365eb7d4ce0fe891e2b6d6248351c287435ca502103f1f1431b1710e513ad";
  +      outputHash = "6a358f61ed3b66a7f6e1f4e794a94c7be4c81b7a58ec360c33791e8d7d9bd405";
       };
     };
   
  
positive.code: 
    src = fetchurl {
      urls = tarballUrls id version;
      hashOutput = false;
      multihash = "QmabfNsHHEbpxqbzMmDQSXVuVbrU7vopAhojMXPdWsaTyy";
      sha256 = "fe3365eb7d4ce0fe891e2b6d6248351c287435ca502103f1f1431b1710e513ad";
    };
  
    nativeBuildInputs = optionals (!libOnly) [
  
negative.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"
  