anchor.diff:  
     buildInputs = [
       curl
  -    krb5_lib
  +    kerberos
       openssl
       zlib
     ];
  
positive.code: , ninja
  
  , curl
  , krb5_lib
  , openssl
  , zlib
  }:
  
  let
    rev = "ecf5b85ade59eb942d873aa92adc956c1da89d06";
    date = "2018-10-23";
  in
  stdenv.mkDerivation rec {
    name = "mariadb-connector-c-${date}";
  
negative.code:     owner = "MariaDB";
      repo = "mariadb-connector-c";
      inherit rev;
      sha256 = "5ff9bcefeccade699c2edbb30876f056c9a88c82812d72abddcb4a1c8ba196cb";
    };
  
    nativeBuildInputs = [
  