anchor.diff:  , libiconv, openssl, pcre, boost, judy, bison, libxml2, libkrb5, linux-pam, curl
   , libaio, libevent, jemalloc, cracklib, systemd, numactl, perl
   , fixDarwinDylibNames, cctools, CoreServices
  -, asio, buildEnv, check, scons
  -, less, fetchpatch
  +, asio, buildEnv, check, scons, less
   , withoutClient ? false
   }:
   
  
positive.code: };
  
  common = rec { # attributes common to both builds
    version = "10.3.18";
  
    src = fetchurl {
      urls = [
        "https://downloads.mariadb.org/f/mariadb-${version}/source/mariadb-${version}.tar.gz"
        "https://downloads.mariadb.com/MariaDB/mariadb-${version}/source/mariadb-${version}.tar.gz"
      ];
      sha256 = "1p6yvmahnkmsz50zjzp20ak7jzbqysly5bdl51nnrngrbfl6qib9";
      name   = "mariadb-${version}.tar.gz";
    };
  
  
negative.code:   patches = [
      ./cmake-includedir.patch
      ./cmake-libmariadb-includedir.patch
    ];
  
    cmakeFlags = [
      "-DBUILD_CONFIG=mysql_release"
  