anchor.diff:        failEarly = true;
         urls = map (n: "${n}.gz") (tarballUrls newVersion);
         inherit (src) outputHashAlgo;
  -      outputHash = "f68d0fcc616119d27ebace162499e73f4ae3998e49b98d1f454bb467cdb1d4e6";
  +      outputHash = "33f39612cd6d1ae6a737245784581494846f5bb07827983d2f41f942446aa4e6";
         fullOpts = {
           pgpsigUrls = map (n: "${n}.asc") (tarballUrls newVersion);
           pgpDecompress = true;
  
positive.code:   src = fetchurl {
      urls = map (n: "${n}.gz") (tarballUrls version);
      hashOutput = false;
      sha256 = "f68d0fcc616119d27ebace162499e73f4ae3998e49b98d1f454bb467cdb1d4e6";
    };
  
    nativeBuildInputs = [
  
negative.code: }:
  
  let
    version = "0.10.0";
    newVersion = "0.10.0";
  
    tarballUrls = version: [
      "mirror://samba/tevent/tevent-${version}.tar"
  