[DRE-maint] Bug#498700: Bug#498700: Missing upgrade path from libdb4.2-ruby1.8 to libdb-ruby1.8

[Julian Andres Klode]

On Sun, Sep 28, 2008 at 05:30:10PM +0200, Lucas Nussbaum wrote:
> On 28/09/08 at 15:06 +0200, Frans Pop wrote:
> > On Sunday 28 September 2008, Adeodato Simó wrote:
> > > Isn't this a bug of our upgrading tools, that should prefer to install
> > > a new, non-obsolete package A that Provides: B, rather than keeping a
> > > no-longer-present-in-the-lists B installed?
> > 
> > Possibly. But as long as those tools don't support that it will have to be 
> > solved in the packages themselves.
> 
> I'm wondering how many cases like that are still in lenny. That is:
> - binary package in etch
> - that is not in lenny
> - that is Replaced/Provided by another package
You can use UDD to find it out. I failed to create something
fast, but here is my code (it's too slow to output something):

select package from packages_summary where (
	release='etch'
	and package not in (select package from packages_summary where release='lenny')
	and exists (
		select package from packages where (
			release='lenny'
			and ARRAY[packages_summary.package] <@  string_to_array(provides, ', ')
		)
	)
);

Please note that I have almost no experience with SQL stuff. This
is just the basic idea and needs real improvements. (Would be a good
QA test, in my opinion).
> 
> On the other hand, lots of libraries are probably in this case.
> 
> Frans, did you just run into this bug by luck, or did you specifically
> looked for such cases?
> 
> > Feel free to clone the bug to apt/aptitude/whatever if you feel that 
> > should be implemented, but I'd think that would be squeeze material, not 
> > lenny.
> 
> Agreed.
> -- 
> | Lucas Nussbaum
> | lucas at lucas-nussbaum.net   http://www.lucas-nussbaum.net/ |
> | jabber: lucas at nussbaum.fr             GPG: 1024D/023B3F4F |
> 
> 
> 
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