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On Sat, Jun 23, 2012 at 9:22 PM, Ciaran McCreesh
> On Sat, 23 Jun 2012 20:23:13 +0200
> Michał Górny <firstname.lastname@example.org> wrote:
>> On Sat, 23 Jun 2012 19:06:38 +0100
>> Ciaran McCreesh <ciaran.mccreesh@...> wrote:
>> > On Sat, 23 Jun 2012 20:09:03 +0200
>> > Michał Górny <email@example.com> wrote:
>> > > > That's just it, though -- this no longer holds. -r300 is now
>> > > > being used for something that is exactly the same version as
>> > > > -r200.
>> > >
>> > > Did you look at SONAME?
>> > Look at SONAME before deciding what package to install? Kindly
>> > explain how that works.
>> I'm just saying that these are two different versions of the package.
>> If you want GTK+3, you take the newer one. If you want GTK+2 compat,
>> you take the older slot. What's wrong with that?
> The package mangler does not know that 1.1-r300 is not a "better"
> version than 1.1-r200, or that 1.2-r200 is not a "better" version than
> 1.1-r300. Indicating packages where this kind of strangeness happens
> allows manglers to know that things that are usually true about the
> relationship between slots and versions no longer hold, and that in
> these specific cases it should consider slots to be heavily independent.
You already have this info, it's called a "slot dependency".