[firedrake] Dependency issues

[David Ham]

OK the story is as follows. Petsc is trying to be clever. Because we're
using a development version, the setup.py causes the minor version number
reported to pip to be increased by one - hence reporting 3.6.dev0.

The simple workaround appears to be to tell pip to ignore dependencies when
installing petsc4py:

pip install --no-deps git+
https://bitbucket.org/mapdes/petsc4py.git@firedrake#egg=petsc4py

Can you try that and report whether it works for you? If that works then
I'll change the install instructions.

Regards,

David


On 9 January 2015 at 11:31, David Ham <David.Ham at imperial.ac.uk> wrote:

> Hi Felix,
>
> I confirm I can reproduce the bug. I'm going to try the straightforward
> fix of telling petsc4py it is allowed to use petsc 3.6.
>
> Stay tuned...
>
> David
>
> On 8 January 2015 at 19:14, de Souza, Felix <
> felix.de-souza11 at imperial.ac.uk> wrote:
>
>>  Hello and happy new year all!
>>
>>
>>  For about a week and half or so (not for the entire time), I've been
>> trying to install PETSc along with petsc4py, so I could get PyOP2 passing
>> tests. I'm on a Mac running OS X 10.10 (Yosemite).
>>
>>
>>  Initially, whenever running `make test' within the PyOP2 directory,
>> it was reporting a weird thing of wanting to load shared libraries from the
>> temporary location in which pip installed PETSc, (wanted to load hwloc or
>> something). Someone pointed out to me that it was non-essential to have
>> hwloc, so I installed it without. But tests just wouldn't run, some
>> dependency issue or mismatch or versions.
>>
>>
>>  So I scrapped it and started again a few days later, however the
>> version of PETSc installed via the command:
>>
>>
>>  pip install https://bitbucket.org/mapdes/petsc/get/firedrake.tar.bz2
>>
>>
>>  was `petsc-3.6.dev0'​, and with the version of petsc4py that
>> is installed (attempted to) by the command:
>>
>>
>>  pip install git+https://bitbucket.org/mapdes/petsc4py.git@firedrake#egg=petsc4py
>>
>>
>>  I get a dependency mismatch:
>>  Could not find any downloads that satisfy the requirement
>> petsc<3.6,>=3.5 (from petsc4py)
>> Some externally hosted files were ignored as access to them may be
>> unreliable (use --allow-external petsc to allow).
>> No distributions at all found for petsc<3.6,>=3.5 (from petsc4py)
>>
>>
>>  How can I get versions of PETSc and petsc4py that are compatible with
>> each other and PyOP2, firedrake etc.
>>
>>
>>  Hopefully with this out of the way, PyOP2 tests will pass. If not I'll
>> be back here again :(
>>
>>
>>  Thanks,
>>
>>
>>  Felix
>>
>>
>>
>
>
> --
> Dr David Ham
> Departments of Mathematics and Computing
> Imperial College London
>
> http://www.imperial.ac.uk/people/david.ham
>



-- 
Dr David Ham
Departments of Mathematics and Computing
Imperial College London

http://www.imperial.ac.uk/people/david.ham
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