anchor.diff:    };
   
     nativeBuildInputs = [ gnustep.make makeWrapper python3 ];
  -  buildInputs = [ gnustep.base sope openssl libmemcached curl libsodium libytnef libzip pkg-config ]
  -    ++ lib.optional (openldap != null) openldap;
  +  buildInputs = [ gnustep.base sope openssl libmemcached curl libsodium libytnef libzip pkg-config openldap oathToolkit ];
   
     patches = [
       # TODO: take a closer look at other patches in https://sources.debian.org/patches/sogo/ and https://github.com/Skrupellos/sogo-patches
  
positive.code: { gnustep, lib, fetchFromGitHub, fetchpatch, makeWrapper, python3, lndir
  , openssl, openldap, sope, libmemcached, curl, libsodium, libytnef, libzip, pkg-config, nixosTests }:
  gnustep.stdenv.mkDerivation rec {
    pname = "SOGo";
    version = "5.3.0";
  
negative.code:     find . -type f -name GNUmakefile -exec sed -i "s:\\$.GNUSTEP_MAKEFILES.:$PWD/makefiles:g" {} +
    '';
  
    configureFlags = [
      "--disable-debug"
      "--with-ssl=ssl"
      "--enable-mfa"
    ];
  
    preFixup = ''
      # Create gnustep.conf
  