anchor.diff: -{ stdenv, fetchurl, openssl, cyrus_sasl, db, groff }:
  +{ stdenv, fetchurl, openssl, cyrus_sasl, db, groff, libtool }:
   
   stdenv.mkDerivation rec {
     name = "openldap-2.4.44";
  
positive.code:     rm -r libraries/*/.libs
    '';
  
    meta = with stdenv.lib; {
      homepage    = http://www.openldap.org/;
      description = "An open source implementation of the Lightweight Directory Access Protocol";
  
negative.code: 
    enableParallelBuilding = true;
  
    buildInputs = [ openssl cyrus_sasl db groff libtool ];
  
    configureFlags =
      [ "--enable-overlays"
        "--disable-dependency-tracking"   # speeds up one-time build
        "--enable-modules"
      ] ++ stdenv.lib.optional (openssl == null) "--without-tls"
        ++ stdenv.lib.optional (cyrus_sasl == null) "--without-cyrus-sasl"
        ++ stdenv.lib.optional stdenv.isFreeBSD "--with-pic";
  