Bug#739663: Processed: libboinc7: fails to upgrade from 'wheezy' - trying to overwrite /usr/lib/libboinc_zip.so.7

[Gianfranco Costamagna]

Il Venerdì 21 Febbraio 2014 14:54, Andreas Beckmann <anbe at debian.org> ha scritto:

On 2014-02-21 14:37, Gianfranco Costamagna wrote:
>> Hi Andreas,
>> 
>> I tried to add a Break+Replaces, but it didn't work, 
>
>How did this look like? And how did it fail?


I dont't honestly remember, it failed with almost the same error, or something related to a missing boinc-dev package

>
>> I think because now boinc-dev is not a real package anymore, just a transition virtual package.
>
>Since the B+R you add are versioned, they only match against real
>packages. And the old one is a real package.
>
>> For this reason I only added a "breaks" on libboinc7, and I tested on a virtual machine.
>>
>> It seems to be working, but this is the first time I play with breaks/replaces fields, so I might be wrong somewhere.
>
>This probably breaks if I torture-test it :-) And it will definitely
>break in case you add a transitional boing-dev package.
>

mmm this is something I don't understand, and moreover the problem is that I manually try to upgrade packages with "dpkg", and in this case I needed to add manually libboinc7 IIRC to the list.

So I don't know exactly how to test for this bug, this is why help is really needed ;)


>> this is the commit, I'll upload a version in the next few days if no answer, since I think this bug is pretty serious.
>> 
>> http://anonscm.debian.org/gitweb/?p=pkg-boinc/boinc.git;a=commitdiff;h=c993dd1d92d58a03562c52c3d2f8b180303eb84f
>> 
>> Can I kindly ask you to review the patch?
>
>7.0.39+dfsg-1 is the version that split up boinc-dev? And this was the
>first upload of the new 7.0.39+dfsg upstream, i.e. there have not been
>any 7.0.39+dfsg-1~experimental0 or similar versions?

this is the version that has some library moved from one package to another, no, this is the first upload, nothing in experimental
>
>So each package that got a bit of the previous content (and ships it at
>the same location) should have
>  Breaks: boinc-dev (<< 7.0.39+dfsg)
>  Replaces: boinc-dev (<< 7.0.39+dfsg)
>(in addition to other B+R it might already have).

ok, this seems reasonable, but we moved the libraries many times between versions, that boinc-dev, the libboinc introduction, the split between client and server libraries, the server-maker package introduction...

Boinc has grown a lot since the old package, this is why I'm having this kind of troubles in thinking in a "clean" way for upgrade, the same can happen I think even in ubuntu, with different versions and so different files overridden.

I don't like to fix just this bug and have a transition failure between somebody with backports enabled or other different repository.

I hope to have explained my (maybe wrong, I'm here to learn :p) point

thanks for your support and bug report so far!

Cheers,

Gianfranco


>
>(this review is based solely on your reply and the commitdiff you
>linked, I haven't looked at the boinc package in more detail, but I
>might take a further look at the weekend)
>
>
>Andreas
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