anchor.diff:    src = fetchurl {
       urls = map (n: "${n}.gz") (tarballUrls version);
       hashOutput = false;
  -    sha256 = "9e7ada780e483ebbf27080a76a73413cfa6344df9ad280f812014c68b7c368dc";
  +    sha256 = "195bf6830a070deb11c492b8cd575a59cd4d3b634164f3f693f6388f806a52a9";
     };
   
     nativeBuildInputs = [
  
positive.code:       failEarly = true;
        urls = map (n: "${n}.gz") (tarballUrls newVersion);
        inherit (src) outputHashAlgo;
        outputHash = "9e7ada780e483ebbf27080a76a73413cfa6344df9ad280f812014c68b7c368dc";
        fullOpts = {
          pgpsigUrls = map (n: "${n}.asc") (tarballUrls newVersion);
          pgpDecompress = true;
  
negative.code: }:
  
  let
    version = "2.1.16";
    newVersion = "2.1.16";
  
    tarballUrls = version: [
      "mirror://samba/talloc/talloc-${version}.tar"
  