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Bug#948735: marked as done (apt doesn't completely remove "postgresql-11" dependencies)

Your message dated Sun, 12 Jan 2020 22:02:51 +0100
with message-id <20200112220043.GA207194@debian.org>
and subject line Re: Bug#948735: apt doesn't completely remove "postgresql-11" dependencies
has caused the Debian Bug report #948735,
regarding apt doesn't completely remove "postgresql-11" dependencies
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
948735: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=948735
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message ---
package: apt
version: 1.8.2

Note: This was attempted on *fresh* Debian and Ubuntu installations.

$ apt install postgresql-11
$ apt purge postgresql-11
$ apt autoremove

leaves these packages behind:
postgresql-client-11
postgresql-client-common
postgresql-common


I checked the dependents using "apt rdepends $package"
postgresql-client-11: no dependents
postgresql-client-common: postgresql-client-11, postgresql-common
postgresql-common: logrotate


It makes no sense that "postgresql-client-11" was not removed. It's an automatic package with no dependents. (aptitude removes it automatically).

As for "postgresql-common" becoming a dependency for "logrotate", it doesn't make sense to me either, but I don't know if it's a bug or not.

I contacted a Postgres package maintainer and he believes APT is to blame here.

--- End Message ---
--- Begin Message --- 
On Sun, Jan 12, 2020 at 05:40:17PM +0000, Mario E. Weisz wrote:
> package: apt
> version: 1.8.2
> 
> Note: This was attempted on *fresh* Debian and Ubuntu installations.
> 
> $ apt install postgresql-11
> $ apt purge postgresql-11
> $ apt autoremove
> 
> leaves these packages behind:
> postgresql-client-11
> postgresql-client-common
> postgresql-common

It is not expected that install, followed by remove and autoremove produce
the original state. autoremoval also takes Depends, Recommends, and Suggests
(which are not automatically installed) from other installed packages into account, 
as it must in order to produce safe-ish results, because removing a package that
is Suggested or more by another package would change that other packages behavior.

So this is not surprising or a bug.

> 
> I checked the dependents using "apt rdepends $package"
> postgresql-client-11: no dependents
> postgresql-client-common: postgresql-client-11, postgresql-common
> postgresql-common: logrotate
> 
> It makes no sense that "postgresql-client-11" was not removed. It's an automatic package with no dependents. (aptitude removes it automatically).

Probably something installed depends, recommends, or suggests
the postgresql-client that it provides.

-- 
debian developer - deb.li/jak | jak-linux.org - free software dev
ubuntu core developer                              i speak de, en

--- End Message ---
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