Installing xlibs wants to remove xdm and other stuff

[Neil Booth <neil@daikokuya.demon.co.uk>]

This is what apt-get -s gives:-

monkey:/home/neil# apt-get -s dist-upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
Calculating Upgrade... Done
The following packages will be REMOVED:
  intlfonts-japanese intlfonts-japanese-big xbase-clients xdm xfonts-100dpi xfonts-75dpi
  xfonts-base xfonts-cjk xfonts-scalable 
2 packages upgraded, 0 newly installed, 9 to remove and 0 not upgraded.
Remv intlfonts-japanese
Remv intlfonts-japanese-big
Remv xfonts-scalable
Remv xfonts-cjk
Remv xfonts-100dpi
Remv xdm
Remv xfonts-base
Remv xfonts-75dpi
Remv xbase-clients
Inst xlibs [shellutils on hurd]
Inst xlibs-dev [shellutils on hurd]
Conf xlibs
Conf xlibs-dev
monkey:/home/neil

Why does it want to remove this stuff, including xdm?  I need to keep
the various fonts; how can I resolve this?

Thanks,

Neil.