anchor.diff:  }:
   
   let
  -  rev = "e5ce85b0b6f2e734b497aea5c2eff6398da749f5";
  -  date = "2017-06-08";
  +  rev = "3f356c0598ad4785e9b4eff23e03fd662a701070";
  +  date = "2017-07-07";
   in
   stdenv.mkDerivation rec {
     name = "mariadb-connector-c-${date}";
  
positive.code:     owner = "MariaDB";
      repo = "mariadb-connector-c";
      inherit rev;
      sha256 = "00898eda42dce5a432336fbfdbac71e7e3af81799b1afcd70667be88aada7749";
    };
  
    nativeBuildInputs = [
  
negative.code:   postInstall = ''
      ln -sv mariadb_config "$out"/bin/mysql_config
      ln -sv mariadb "$out"/include/mysql
    '';
  
    meta = with stdenv.lib; {
  