[Debian-science-sagemath] apt upgrading issue:

[Jerome BENOIT]

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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.


Jerome


> 
> X
> 

- -- 
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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