[Pkg-scicomp-devel] Bug#571780: Bug#571780: python-pydolfin0: Cannot import dolfin from python.

[Guillaume Yziquel]

Johannes Ring a écrit :
> Hi,
> 
> Thanks for your report.
> 
> The package python-pydolfin0 misses a dependency on python-ufl >=
> 0.5.2-1. I think the problem could be that you have an older version
> of python-ufl installed. Can you confirm this?
> 
> Johannes

I do not know exactly about the bug I'm replying to because I upgraded a 
few packages in the meantime. So I'll probably not be able to answer 
this specific bug. However, I still had another similar issue about 
version dependencies:

I have python-ufl = 0.5.1-1 < 0.5.2-1. And that is not the problem. The 
problem is, in fact, that python-ffc 0.9.0-1 relies on python-ufc 
1.4.0-1, or at least > 1.2.0-2.

Indeed, the templates.py file is not in the python ufc package for 
version 1.2.0-2.

So the __import__ statement loading ffc failed.

As a general statement, the bug comes from the fact that my system has a 
rather conservative APT policy. Your packages often track the latest 
releases, and the version dependencies are not always correct.

>> -- System Information:
>> Debian Release: squeeze/sid
>>  APT prefers testing
>>  APT policy: (900, 'testing'), (700, 'stable'), (500, 'stable'), (90, 'unstable'), (1, 'experimental')
>> Architecture: amd64 (x86_64)

-- 
      Guillaume Yziquel
http://yziquel.homelinux.org/