anchor.diff:  { lib, stdenv, fetchurl, composableDerivation, autoconf, automake, flex, bison
  -, mysql, libxml2, readline, zlib, curl, postgresql, gettext
  +, libmysql, libxml2, readline, zlib, curl, postgresql, gettext
   , openssl, pkgconfig, sqlite, config, libjpeg, libpng, freetype
   , libxslt, libmcrypt, bzip2, icu, openldap, cyrus_sasl, libmhash, freetds
   , uwimap, pam, gmp, apacheHttpd }:
  
positive.code:         };
  
          mysql = {
            configureFlags = ["--with-mysql=${mysql.lib}"];
            buildInputs = [ mysql.lib ];
          };
  
          mysqli = {
            configureFlags = ["--with-mysqli=${mysql.lib}/bin/mysql_config"];
            buildInputs = [ mysql.lib ];
          };
  
          mysqli_embedded = {
  
negative.code:         };
  
          pdo_mysql = {
            configureFlags = ["--with-pdo-mysql=${libmysql}"];
            buildInputs = [ libmysql ];
          };
  
          bcmath = {
  