anchor.diff:    passthru = {
       srcVerification = fetchurl rec {
         failEarly = true;
  -      urls = tarballUrls "0.23.12";
  -      pgpsigUrls = map (n: "${n}.sig") urls;
  -      pgpKeyFingerprints = [
  -        "AED6 E2A1 85EE B379 F174  76D2 E012 D07A D0E3 CC30"
  -        "4622 25C3 B46F 3487 9FC8  496C D605 848E D7E6 9871"
  -      ];
  +      urls = tarballUrls "0.23.14";
  +      fullOpts = {
  +        pgpsigUrls = map (n: "${n}.sig") urls;
  +        pgpKeyFingerprints = [
  +          "AED6 E2A1 85EE B379 F174  76D2 E012 D07A D0E3 CC30"
  +          "4622 25C3 B46F 3487 9FC8  496C D605 848E D7E6 9871"
  +        ];
  +      };
         inherit (src) outputHashAlgo;
         outputHash = "58bae22f19db1de1a1103e7ca4149eed6e303e727878c2cd5ea9e6fe445fd403";
       };
  
positive.code:   src = fetchurl {
      urls = tarballUrls version;
      hashOutput = false;
      sha256 = "58bae22f19db1de1a1103e7ca4149eed6e303e727878c2cd5ea9e6fe445fd403";
    };
  
    buildInputs = [
  
negative.code: }:
  
  let
    version = "0.23.14";
  
    tarballUrls = version: [
      "https://github.com/p11-glue/p11-kit/releases/download/${version}/p11-kit-${version}.tar.gz"
  