gdm's postinst has code like
DEFAULT_DISPLAY_MANAGER_FILE=/etc/X11/default-display-manager
case "$1" in
configure)
if grep "/usr/bin/gdm" $DEFAULT_DISPLAY_MANAGER_FILE; then
echo "/usr/sbin/gdm" > $DEFAULT_DISPLAY_MANAGER_FILE
fi
;;
esac
which doesn't check /etc/X11/default-display-manager exists before
grepping it.
Elsewhere, debian/* files do check /etc/X11/default-display-manager
exists before reading it. debian/changelog says
gdm (2.8.0.0-0ubuntu1) breezy; urgency=low
* debian/postinst:
- update the gdm value for default-display-manager.
-- Sebastien Bacher <[EMAIL PROTECTED]> Wed, 15 Jun 2005 22:53:12 +0200
--
fails to install -- possibly due to implicit dependency on
default-display-manager?
https://launchpad.net/bugs/29389
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