On 07/09/2015 07:48 PM, Miloslav Trmač wrote:
>> On 09/07/15 12:39, Miloslav Trmač wrote:
>>>>>          Protected multilib versions: polkit-0.113-1.fc21.x86_64 !=
>>>>> polkit-0.112-7.fc21.1.i686
>>>>
>>>> This is due to polkit splitting out a polkit-libs package between those
>>>> two versions. This makes it only include the polkit-libs package
>>>> instead of a polkit.i686.
>>>>
>>>> You should be able to just remove the old polkit.i686, but I agree it
>>>> needs to be handed by the package cleanly for upgrades.
>>>
>>> Oops.  Is there a way to handle this cleanly at all?  I can’t just do
>>> polkit-libs.i686 Obsoletes: polkit.i686, that would break 32-bit-only
>>> systems.
>>
>> How about:
>>
>> Obsoletes: polkit < 0.112-7
>> (assuming this is the EVR at which the split was introduced)
>>
>> https://fedoraproject.org/wiki/PackagingDrafts/MultilibTricks#Splitting_libraries_into_separate_packages
>>
>> On a 32-bit system, both polkit and polkit-libs should be updated to
>> polkit-0.112-7, whilst on x86_64, polkit-libs-0.112-7.i386 will obsolete
>> polkit-0.112-1.i386 and the x86_64 versions will upgrade to 0.112-7 as
>> expected.
> 
> That doesn’t quite work; yum sees this Obsoletes: and decides to replace 
> polkit with polkit-libs, and then there is no polkit expected to be 
> installed, so the upgraded one will not be installed either.  In most systems 
> this happens to work OK because the polkit package is dragged back in through 
> one of several explicit dependencies on polkit, but a truly minimal install 
> will end up losing the daemon.

The obsoletes should probably go to polkit itself so that the new
polkit.x86_64 package obsoletes both polkit.i686 and polkit.x86_64
during upgrades.

-libs shouldn't need any obsoletes or other special handling since other
packages that depend on -libs would just pull in the correct i686 or
x86_64 version as needed.

At least this is how it used to work with yum; might need some testing
to make sure dnf's depsolver handles obsoletes the same way.

-- 
Hope this helps,
Kalev
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