anchor.diff:        map (n: "${n}-${replaceChars ["."] ["_"] version}-src.tgz")
             (baseUrls version);
       hashOutput = false;
  -    sha256 = "0eb46ba3746a9c2092c8ad347a29b1a1b4941144772d13a88667a7b11ea30309";
  +    sha256 = "2b0a4410153a9b20de0e20c7d8b66049a72aef244b53683d0d7521371683da0c";
     };
   
     postUnpack = ''
  
positive.code:           # Steven R. Loomis
            "4C95 9C0F 547B D2D8 B783  5B17 AAA9 AE9C 0F0D E47D"
          ];
          outputHash = "0eb46ba3746a9c2092c8ad347a29b1a1b4941144772d13a88667a7b11ea30309";
          failEarly = true;
        };
    };
  
negative.code:   passthru = {
      srcVerification =
        let
          version = "58.2";
        in
        fetchurl {
          inherit (src) outputHashAlgo;
  