[game-data-packager] 160/293: note that removing the alternative on upgrade is a problem

[Simon McVittie]

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smcv pushed a commit to branch quake
in repository game-data-packager.

commit 74d26013b1c9963767fc4325b459c9d798811084
Author: Simon McVittie <smcv at debian.org>
Date:   Fri Jul 15 00:08:29 2011 +0100

    note that removing the alternative on upgrade is a problem
---
 debian/policy.txt | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/debian/policy.txt b/debian/policy.txt
index e7ccf92..d5247ff 100644
--- a/debian/policy.txt
+++ b/debian/policy.txt
@@ -30,10 +30,11 @@ update-alternatives --quiet --install /usr/lib/quake/quake-engine \
 update-alternatives --quiet --install /usr/lib/quake/quake-engine-server \
     quake-engine-server /usr/bin/MYSERVER 0
 
-Every implementation of the alternatives should register with priority 0, so
-that the first engine that the user installs is considered "best" by
-update-alternatives, and installing another engine never causes the user
-to "lose" their configuration and savegames.
+Every implementation of the alternatives should register with priority 0,
+and the prerm maintainer script should not remove the alternative when invoked
+with $1 = "upgrade", so that the first engine that the user installs is
+considered "best" by update-alternatives, and installing another engine
+never causes the user to "lose" their configuration and savegames.
 
 Virtual packages
 ----------------

-- 
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