Subject: bug#22533: Python bytecode reproducibility

From: Gábor Boskovits <[email-masked]>
Date: Tue, 6 Mar 2018 15:57:02 +0100

2018-03-06 15:43 GMT+01:00 Ricardo Wurmus <[email-masked]>:

>
> Ricardo Wurmus <[email-masked]> writes:
>
> > Marius Bakke <[email-masked]> 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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>
>