anchor.diff:    src = fetchurl {
       urls = map (n: "${n}.xz") (tarballUrls base patch);
       hashOutput = false;
  -    sha256 = "7b5be5489e9b5b7177832836467aba1c87bf0e9bcbcb5a6f35d76cd4782589dc";
  +    sha256 = "f9be7cdcf4fc5c5064a226599acdda6bdf3d86c640152ba01ea642d91108dc8a";
     };
   
     nativeBuildInputs = [
  
positive.code: 
    patches = [
      (fetchTritonPatch {
        rev = "a1d83ec4599abadc041176fb3949a2fc33e6a8fb";
        file = "u/util-linux/fix-paths.patch";
        sha256 = "f471c78e42aa88b55924a39c0692815fc37a4814668ded26fd3b05352b9575e8";
      })
    ];
  
  
negative.code:   passthru = {
      srcVerification = fetchurl {
        failEarly = true;
        urls = map (n: "${n}.xz") (tarballUrls "2.31" null);
        pgpsigUrls = map (n: "${n}.sign") (tarballUrls "2.31" null);
        pgpsigSha256Urls = map (n: "${n}/sha256sums.asc") (baseUrls "2.31");
        pgpKeyFingerprint = "B0C6 4D14 301C C6EF AEDF  60E4 E4B7 1D5E EC39 C284";
        pgpDecompress = true;
        outputHash = "f9be7cdcf4fc5c5064a226599acdda6bdf3d86c640152ba01ea642d91108dc8a";
        inherit (src) outputHashAlgo;
      };
    };
  