openldap: Use a global localstatedir

pkgs/development/libraries/openldap/default.nix

@@ -28,12 +28,13 @@ stdenv.mkDerivation rec {
       "--disable-dependency-tracking"   # speeds up one-time build
       "--enable-modules"
       "--sysconfdir=/etc"
+      "--localstatedir=/var"
       "--enable-crypt"
     ] ++ stdenv.lib.optional (openssl == null) "--without-tls"
       ++ stdenv.lib.optional (cyrus_sasl == null) "--without-cyrus-sasl"
       ++ stdenv.lib.optional stdenv.isFreeBSD "--with-pic";
 
-  installFlags = [ "sysconfdir=$(out)/etc" ];
+  installFlags = [ "sysconfdir=$(out)/etc" "localstatedir=$(out)/var" ];
 
   # 1. Fixup broken libtool
   # 2. Libraries left in the build location confuse `patchelf --shrink-rpath`