anchor.diff:      inherit fetchurl stdenv apacheHttpd python;
     };
   
  -  mysql = import ../servers/sql/mysql {
  +  mysql4 = import ../servers/sql/mysql {
       inherit fetchurl stdenv ncurses zlib perl;
       ps = procps; /* !!! Linux only */
     };
   
  -  mysql5 = import ../servers/sql/mysql5 {
  +  mysql = import ../servers/sql/mysql5 {
       inherit fetchurl stdenv ncurses zlib perl;
       ps = procps; /* !!! Linux only */
     };
  
positive.code:   # perhaps this can be done setting php_value in apache don't have time to investigate any further ?
    # This expression is a quick hack now. But perhaps it helps you adding the configuration flags you need?
    php = (import ../development/interpreters/php_configurable) {
     inherit mkDerivationByConfiguration stdenv;
     lib = lib_unstable;
     inherit fetchurl flex bison apacheHttpd; # gettext;
     mysql = mysql5;
     inherit libxml2;
    };
  
  
negative.code: 
    libdbiDrivers = libdbiDriversFun {
      version = "0.8.2-1";
      inherit sqlite mysql;
    } null;
  
  
  