anchor.diff:  
     buildInputs =
       [ openssl zlib pcre libxml2 libxslt gd geoip
  -    ] ++ optional fullWebDAV expat;
  +    ] ++ optional fullWebDAV expat
  +      ++ optional ngx_lua luajit;
  +
  +  LUAJIT_LIB = if ngx_lua then "${luajit}/lib" else "";
  +  LUAJIT_INC = if ngx_lua then "${luajit}/include/luajit-2.0" else "";
   
     patches = if syslog then [ "${syslog-ext}/syslog-1.5.6.patch" ] else [];
   
  
positive.code:     rev = "refs/tags/v0.53";
      sha256 = "90d4e3a49c678019f4f335bc18529aa108fcc9cfe0747ea4e2f6084a70da2868";
    };
  in
  
  stdenv.mkDerivation rec {
  
negative.code: { stdenv, fetchurl, fetchgit, openssl, zlib, pcre, libxml2, libxslt, expat
  , gd, geoip, luajit
  , rtmp ? false
  , fullWebDAV ? false
  , syslog ? false
  , moreheaders ? false
  , echo ? false
  , ngx_lua ? false }:
  
  with stdenv.lib;
  
  