quassel: add ldap support for core

allows using ldap as an authentication backend for the core.

pkgs/applications/networking/irc/quassel/default.nix

···
 
 , lib, stdenv, fetchFromGitHub, cmake, makeWrapper, dconf
 , mkDerivation, qtbase, boost, zlib, qtscript
-, phonon, libdbusmenu, qca-qt5
+, phonon, libdbusmenu, qca-qt5, openldap
 
 , withKDE ? true # enable KDE integration
 , extra-cmake-modules
···
 
   nativeBuildInputs = [ cmake makeWrapper ];
   buildInputs = [ qtbase boost zlib ]
-    ++ lib.optionals buildCore [qtscript qca-qt5 ]
+    ++ lib.optionals buildCore [qtscript qca-qt5 openldap]
     ++ lib.optionals buildClient [libdbusmenu phonon]
     ++ lib.optionals (buildClient && withKDE) [
       extra-cmake-modules kconfigwidgets kcoreaddons
···
     ++ edf static "STATIC"
     ++ edf monolithic "WANT_MONO"
     ++ edf enableDaemon "WANT_CORE"
+    ++ edf enableDaemon "WITH_LDAP"
     ++ edf client "WANT_QTCLIENT"
     ++ edf withKDE "WITH_KDE";