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Bug#470633: Explicitly say obsolete configuration files may be removed



Hi,

        This bug has not been looked at for a while. The wiki article:
 states:
,----[  http://wiki.debian.org/DpkgConffileHandling ]
|   If you completely remove a configuration file, you should make sure
|   it's also removed from the disk. However if the user has modified it,
|   then you have to preserve the user's modifications somehow in case
|   they wish to refer to them (see also Policy 10.7.3). 
|
|   This can be done your preinst script when given the install or upgrade
|   argument with a package version known to have the conffile that has
|   been removed. 
`----

        I do think this makes  sense, and is definitely a good practice
 (and thus belongs in the developers reference, at least, if not in
 policy proper.

        The argument I see for having it in policy proper is that a
 conffile left behind which is no longer used has potential for
 confusion, not only for humans, but other packages that may parse the
 configuration.

        I also think we should consider what happens if the package is
 subsequently purged; in that case, all the conffiles it uses are
 purged -- but the conffile it no longer uses is left behind as cruft in
 the system, which seems like a flaw.

        manoj
-- 
There's no such thing as pure pleasure; some anxiety always goes with
it.
Manoj Srivastava <srivasta@debian.org> <http://www.debian.org/~srivasta/>  
1024D/BF24424C print 4966 F272 D093 B493 410B  924B 21BA DABB BF24 424C



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