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From: Marc Schoechlin <[EMAIL PROTECTED]>
To: Debian Bug Tracking System <[EMAIL PROTECTED]>
Subject: apt: downgrading of a paket badly solved or described
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Package: apt
Version: 0.5.5.1
Severity: normal

Hi !

I struggled with apt for so many times, when i tried to downgrade a 
paket - so now I decided to write a report.

Apt-get IMHO is the most advanced package-system for unix-environments,
and I liked and used it for years.....this means that you did a good :-))

But there is one thing which is quite suboptimal - a example:

I decided to upgrade the xfree-stuff of my system  - and
I do a regular upgrade of this software. Now I discover that this xfree-release
contains a a bug which makes my system unusable.

Now it would be better to downgrade that package, to get a working system.

But how can i downgrade a package without uninstalling it ?

A "apt-get install <mypackage> --target-release <oldversion>" will not help - 
i get the answer that the package is still up2date.

My first intension is now to get the package manually, and to install this 
package.
But this is not easy erverytime - because if that xfree-stuff is defined as a 
dependency of other packages (i.e. window-managers) - this is very 
unconfortable.

I don't know if "dpkg --force-downgrade" is a solution of this problem, but I 
often
purged that paket, and installed the roght release.

An option to do get a certain release by resolving the dependencies
automatically, would be very cool :-)

If this is not easy to implement, or if this is not conform with the design of
apt - it would be very useful to offer a solution to this problem in the 
manpage.

Best regards

Marc Schoechlin 

-- System Information
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux dragan 2.4.20 #1 Son Dez 22 18:54:47 CET 2002 i686
Locale: LANG=de_DE, [EMAIL PROTECTED]

Versions of packages apt depends on:
ii  libc6                         2.3.1-16   GNU C Library: Shared libraries an
ii  libgcc1                       1:3.3-2    GCC support library
ii  libstdc++5                    1:3.3-2    The GNU Standard C++ Library v3


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Date: Sun, 22 Jun 2003 20:57:34 -0500 (CDT)
From: Adam Heath <[EMAIL PROTECTED]>
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To: Marc Schoechlin <[EMAIL PROTECTED]>,  <[EMAIL PROTECTED]>
Subject: Re: Bug#198392: apt: downgrading of a paket badly solved or described
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(1.174.2.15-2003-03-30-exp)

On Sun, 22 Jun 2003, Marc Schoechlin wrote:

> Package: apt
> Version: 0.5.5.1
> Severity: normal
>
> Hi !
>
> I struggled with apt for so many times, when i tried to downgrade a
> paket - so now I decided to write a report.
>
> Apt-get IMHO is the most advanced package-system for unix-environments,
> and I liked and used it for years.....this means that you did a good :-))
>
> But there is one thing which is quite suboptimal - a example:
>
> I decided to upgrade the xfree-stuff of my system  - and
> I do a regular upgrade of this software. Now I discover that this 
> xfree-release
> contains a a bug which makes my system unusable.
>
> Now it would be better to downgrade that package, to get a working system.
>
> But how can i downgrade a package without uninstalling it ?
>
> A "apt-get install <mypackage> --target-release <oldversion>" will not help -
> i get the answer that the package is still up2date.

apt-get install package=version
apt-get install package/release

> My first intension is now to get the package manually, and to install this 
> package.
> But this is not easy erverytime - because if that xfree-stuff is defined as a
> dependency of other packages (i.e. window-managers) - this is very 
> unconfortable.
>
> I don't know if "dpkg --force-downgrade" is a solution of this problem, but I 
> often
> purged that paket, and installed the roght release.
>
> An option to do get a certain release by resolving the dependencies
> automatically, would be very cool :-)
>
> If this is not easy to implement, or if this is not conform with the design of
> apt - it would be very useful to offer a solution to this problem in the 
> manpage.

Debs do not support downgrades.  If it works, consider yourself lucky.  But
don't expect it to work.

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