anchor.diff:        failEarly = true;
         urls = map (n: "${n}.gz") (tarballUrls newVersion);
         inherit (src) outputHashAlgo;
  -      outputHash = "9e7ada780e483ebbf27080a76a73413cfa6344df9ad280f812014c68b7c368dc";
  +      outputHash = "195bf6830a070deb11c492b8cd575a59cd4d3b634164f3f693f6388f806a52a9";
         fullOpts = {
           pgpsigUrls = map (n: "${n}.asc") (tarballUrls newVersion);
           pgpDecompress = true;
  
positive.code: }:
  
  let
    version = "2.1.15";
    newVersion = "2.1.15";
  
    tarballUrls = version: [
      "mirror://samba/talloc/talloc-${version}.tar"
  
negative.code:   src = fetchurl {
      urls = map (n: "${n}.gz") (tarballUrls version);
      hashOutput = false;
      sha256 = "195bf6830a070deb11c492b8cd575a59cd4d3b634164f3f693f6388f806a52a9";
    };
  
    nativeBuildInputs = [
  