anchor.diff:        failEarly = true;
         urls = map (n: "${n}.gz") (tarballUrls newVersion);
         inherit (src) outputHashAlgo;
  -      outputHash = "9e464550d995c6445045a2a8135db81b7d54e9e95163f337c745f7a89c7d0d62";
  +      outputHash = "f68d0fcc616119d27ebace162499e73f4ae3998e49b98d1f454bb467cdb1d4e6";
         fullOpts = {
           pgpsigUrls = map (n: "${n}.asc") (tarballUrls newVersion);
           pgpDecompress = true;
  
positive.code: }:
  
  let
    version = "0.9.38";
    newVersion = "0.9.38";
  
    tarballUrls = version: [
      "mirror://samba/tevent/tevent-${version}.tar"
  
negative.code:   src = fetchurl {
      urls = map (n: "${n}.gz") (tarballUrls version);
      hashOutput = false;
      sha256 = "f68d0fcc616119d27ebace162499e73f4ae3998e49b98d1f454bb467cdb1d4e6";
    };
  
    nativeBuildInputs = [
  