bug#22533: Python bytecode reproducibility

[Gábor Boskovits]

2018-03-06 15:43 GMT+01:00 Ricardo Wurmus <address@hidden>:

Ricardo Wurmus <address@hidden> writes:

> Marius Bakke <address@hidden> writes:
>
>> I suppose we'll have to set PYTHONHASHSEED somewhere in
>> python-build-system as well.  Did you check if that makes a difference
>> for numpy?  Perhaps it's enough to set it if we add an auto-compilation
>> step?
>
> Right, I’m going to test this with numpy now.  Thanks for the hint!

It did help with one file, which is now built reproducibly, namely

  lib/python3.6/site-packages/numpy/testing/nose_tools/__pycache__/utils.cpython-36.pyc

This leaves five files in numpy that shouldn’t be but unfortunately are
different.

Unfortunately backporting the upstream version is not straightforward at all.

There are too many changes. I will have a look at those test failures instead.

 

--
Ricardo

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