anchor.diff:  }:
   
   let
  -  version = "1.47.4";
  +  version = "1.47.5";
   
     tarballUrls = version: [
       "mirror://gnu/help2man/help2man-${version}.tar.xz"
  
positive.code:   passthru = {
      srcVerification = fetchurl rec {
        failEarly = true;
        urls = tarballUrls "1.47.4";
        pgpsigUrls = map (n: "${n}.sig") urls;
        pgpKeyFingerprint = "87EA 44D1 50D8 9615 E39A  3FEE F0DC 8E00 B28C 5995";
        inherit (src) outputHashAlgo;
        outputHash = "d4ecf697d13f14dd1a78c5995f06459bff706fd1ce593d1c02d81667c0207753";
      };
    };
  
  
negative.code:   src = fetchurl {
      urls = tarballUrls version;
      hashOutput = false;
      sha256 = "7ca60b2519fdbe97f463fe2df66a6188d18b514bfd44127d985f0234ee2461b1";
    };
  
    nativeBuildInputs = [
  