Re: [gentoo-user] And thus the emerge spake...

[Alan McKinnon]

On 17/04/2016 11:36, Meino.Cramer@×××.de wrote:
> Alan McKinnon <alan.mckinnon@×××××.com> [16-04-17 11:08]:
>> On 17/04/2016 05:45, Meino.Cramer@×××.de wrote:
>>>
>>> Hi,
>>>
>>> ...and the novice was buffled and even the master shifted a little bit
>>> after recognizing this words of the eternal being named emerge.
>>> I know, that there is a difference in knowing the path and walking the
>>> path, but it seems that I am not supposed to understand this:
>>>
>>>
>>> These are the packages that would be merged, in reverse order:
>>>
>>> Calculating dependencies... done!
>>>
>>> Total: 0 packages, Size of downloads: 0 KiB
>>>
>>> WARNING: One or more updates/rebuilds have been skipped due to a dependency conflict:
>>>
>>> dev-util/boost-build:0
>>>
>>>   (dev-util/boost-build-1.60.0:0/0::gentoo, ebuild scheduled for merge) conflicts with
>>>     =dev-util/boost-build-1.58* required by (dev-libs/boost-1.58.0-r1:0/1.58.0::gentoo, installed)
>>>     ^                     ^^^^^
>>>
>>>
>>> !!! The following update has been skipped due to unsatisfied dependencies:
>>>
>>> dev-libs/boost:0
>>>
>>> !!! All ebuilds that could satisfy "=dev-util/boost-build-1.60*" have been masked.
>>> !!! One of the following masked packages is required to complete your request:
>>> - dev-util/boost-build-1.60.0::gentoo (masked by: )
>>>
>>>
>>> For me it looks like boost not beeing updated/reinstalled because of
>>> another version of boost, which depends on boost.
>>>
>>> HELP, I need somebody, HELP, not just anybody hee-eee-eelp uuuuuhhhh!
>>>
>>> Thanks for any HELP in advance! May the source be with you...
>>> Best regards,
>>> Meino
>>>
>>>
>>>
>>
>>
>> Hah! That's one of those blockers that makes little or no sense.
>>
>>
>> boost has this dep:
>>
>> DEPEND="${RDEPEND}
>>         =dev-util/boost-build-${MAJOR_V}*"
>>
>> and boost-build does not depend on boost.
>>
>> So, logically you'd expect boost to want to upgrade to 1.60, notice
>> boost-build's dep and upgrade boost-build as well to match. But it
>> doesn't, because boost-build-1.60 is masked for <null> reason.
>>
>> It really looks and smells like a bug in emerge[1] when updating world
>> where it considers boost-build first, fixes the version to use to match
>> current boost, and then can't find a way to upgrade boost.
>>
>> Solution would seem to be to emerge -C either of them and let portage
>> get on with it. Or upgrade just upgrade boost-build by itself then do world
>>
>>
>> [1] I wouldn't go so far as to call it a "bug" as such, because nothing
>> in the spec requires a package manager to guarantee that it will always
>> find the best way to upgrade everything. It only needs to keep the
>> system consistent with the ebuilds it has.
>>
>> --
>> Alan McKinnon
>> alan.mckinnon@×××××.com
>>
>>
>
> Hi Alan,
>
> thanks for your reply! :)
>
> ...and I thought it was me being too limited to see the real truth
> behind that what it is The Matrix.
>
> But it was only a deja-vu....oh wait! It was NO deja-vu ... no
> glitch in The Matrix...we had similiar emerge-ncies in the past. ;)
>
> I will see how far I can go...I was warned to use 060 of boost...
>
> Best regards,
> Meino
>
>
>

It reminds me of many years back with two packages that depend on each
other and portage couldn't deal with updating both at the same time.

emerge -C got a lot of use back then :-)

-- 
Alan McKinnon
alan.mckinnon@×××××.com