GNU bug report logs - #22533
Non-determinism in python-3 ".pyc" bytecode

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Package: guix;

Reported by: Leo Famulari <leo <at> famulari.name>

Date: Tue, 2 Feb 2016 05:17:02 UTC

Severity: important

Done: Ricardo Wurmus <rekado <at> elephly.net>

Bug is archived. No further changes may be made.

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From: ludo <at> gnu.org (Ludovic Courtès)
To: Ricardo Wurmus <rekado <at> elephly.net>
Cc: Marius Bakke <mbakke <at> fastmail.com>, 22533 <at> debbugs.gnu.org
Subject: bug#22533: Python bytecode reproducibility
Date: Mon, 05 Mar 2018 10:25:40 +0100

Hello!

Ricardo Wurmus <rekado <at> elephly.net> skribis:

> Is it a bad idea to override the timestamps in the generated binaries?
> I think that we could avoid the recency check then, which was an
> obstacle to resetting the timestamps of the source files.

I think it’s good if we can fix Python itself to honor SOURCE_DATE_EPOCH
for its timestamps, but it’s also OK to patch timestamps in generated
binaries.

We do that already in gzip headers, with ‘reset-gzip-timestamp’.

Thanks for tackling this!

Ludo’.
This bug report was last modified 6 years and 133 days ago.

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