[Debian-science-sagemath] apt upgrading issue:

[Jerome BENOIT]

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Hi,

On 11/08/16 13:50, Tobias Hansen wrote:
> On 08/11/2016 01:18 PM, Tobias Hansen wrote:
>> On 08/11/2016 11:51 AM, Jerome BENOIT wrote:
>>> Hi,
>>>
>>> On 11/08/16 10:51, Ximin Luo wrote:
>>>> Jerome BENOIT:
>>>>>  sagemath-build-deps : Depends: libbrial-dev (>= 0.8.5) but it is not going to be installed
>>>>>                        Depends: libbrial-groebner-dev (>= 0.8.5) but it is not going to be installed
>>>>>                        Depends: python-brial (>= 0.8.5) but it is not going to be installed
>>>>>
>>>
>>>> What's the rest of the error message? When it says "it is not going to be installed", there should be other reasons on why, above this.
>>>
>>> Indeed, but I could not figure it out. Hence my email.
>>>
>>>
>>>> You could also try using `aptitude install -R sagemath-build-deps` instead of apt-get, it has a more sophisticated dependency resolution.
>>>
>>> Finally I get a hint from dselect:
>>>
>>> 	libbrial-groebner-dev depends on libbrial-groebner0 (= 0.8.5-0+sage1)
>>> 	libbrial-groebner0 depends on libpng12-0 (>= 1.2.13-4)
>>> 	libpng12-0 does not appear to be available
>>>
>>> It appears that libpng12-0 is effectively not available in Sid for amd64 architecture:
>>> I guess that brial was built within a Jessie environment or something.
>>> Second, I am surprised to meet PNG here.
>>>
>>
>> Ok, I still had libpng12-0 installed in my unstable chroot. It was only
>> removed from unstable in May. I'll reupload a version of the package
>> without the dependency.
>>
>> Best,
>> Tobias
> 
> I uploaded a new version which now depends on libpng16-16. That's the
> reason why it's good we don't all have the same chroot. Thanks!

Personally I periodically renew from scratch my schroot and I build with pbuilder:
this can of issue jumps to your face very quickly then.

Said that, one issue remains: I read:

Unpacking python-brial (0.8.5-0+sage2) ...
dpkg: error processing archive /var/cache/apt/archives/python-brial_0.8.5-0+sage2_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/python2.7/dist-packages/brial/PyPolyBoRi.py', which is also in package python-polybori 0.8.4.3-0+sage1
Errors were encountered while processing:
 /var/cache/apt/archives/python-brial_0.8.5-0+sage2_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

This issue will sooner or later detected by piupart: some Replaces/Breaks fileds in d/control must be corrected or added.

Jerome

> 
> 
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- -- 
Jerome BENOIT | calculus+at-rezozer^dot*net
https://qa.debian.org/developer.php?login=calculus@rezozer.net
AE28 AE15 710D FF1D 87E5  A762 3F92 19A6 7F36 C68B
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