anchor.diff:  
     buildInputs = [
       curl
  -    krb5_lib
  +    kerberos
       openssl
       zlib
     ];
  
positive.code:     owner = "MariaDB";
      repo = "mariadb-connector-c";
      inherit rev;
      sha256 = "1203bf88c47c8a50b96bed6a2c7e00588f4c07f847a511998a1f48ca781333c3";
    };
  
    nativeBuildInputs = [
  
negative.code: , ninja
  
  , curl
  , kerberos
  , openssl
  , zlib
  }:
  
  let
    rev = "3b3b492901956c1ba9283261fe395a64b426c174";
    date = "2018-12-18";
  in
  stdenv.mkDerivation rec {
    name = "mariadb-connector-c-${date}";
  