anchor.diff:      ++ concatMap (mod: mod.inputs or []) modules;
   
     configureFlags = [
  -    "--with-select_module"
  -    "--with-poll_module"
  -    "--with-threads"
       "--with-http_ssl_module"
  -    "--with-http_spdy_module"
  +    "--with-http_v2_module"
       "--with-http_realip_module"
       "--with-http_addition_module"
       "--with-http_xslt_module"
  
positive.code: with stdenv.lib;
  
  let
    version = "1.8.1";
    mainSrc = fetchurl {
      url = "http://nginx.org/download/nginx-${version}.tar.gz";
      sha256 = "1dwpyw4pvhj68vxramqxm8f79pqz9lrm8mvifbn49h3615ikqjwg";
    };
  
  in
  
negative.code:     ''
      ;
  
    postInstall = ''
      mv $out/sbin $out/bin
    '';
  
    meta = {
      description = "A reverse proxy and lightweight webserver";
      homepage    = http://nginx.org;
  