nilfs-utils: force enable limbount support

https://discourse.nixos.org/t/how-to-contribute-send-bugreport-without-github-account/475
https://nilfs.sourceforge.io/en/faq.html

pkgs/tools/filesystems/nilfs-utils/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, fetchpatch, libuuid, libselinux }:
-let 
+let
   sourceInfo = rec {
     version = "2.2.7";
     url = "http://nilfs.sourceforge.net/download/nilfs-utils-${version}.tar.bz2";
@@ -35,6 +35,8 @@ stdenv.mkDerivation rec {
     })
   ];
 
+  configureFlags = [ "--with-libmount" ];
+
   # FIXME: https://github.com/NixOS/patchelf/pull/98 is in, but stdenv
   # still doesn't use it
   #