GNU bug report logs - #22010
Python 2.7.10 not deterministic

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: ludo <at> gnu.org (Ludovic Courtès)
Subject: bug#22010: closed (Re: bug#22010: bytecode timestamps)
Date: Fri, 08 Feb 2019 09:46:02 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#22010: Python 2.7.10 not deterministic

which was filed against the guix package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 22010 <at> debbugs.gnu.org.

-- 
22010: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22010
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Ricardo Wurmus <rekado <at> elephly.net>
To: Leo Famulari <leo <at> famulari.name>
Cc: 22010-done <at> debbugs.gnu.org
Subject: Re: bug#22010: bytecode timestamps
Date: Fri, 08 Feb 2019 10:45:19 +0100

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

> I’ll push the change to the core-updates branch.

This is now on core-updates.  Python 2 now builds reproducibly.

--
Ricardo

[Message part 3 (message/rfc822, inline)]

From: ludo <at> gnu.org (Ludovic Courtès)
To: bug-guix <at> gnu.org
Subject: Python 2.7.10 not deterministic
Date: Wed, 25 Nov 2015 15:38:54 +0100

As of v0.9.0-238-gd7572b4 (currently ‘tk-update’), Python 2.7.10 is not
reproducible:

--8<---------------cut here---------------start------------->8---
$ diff -r --no-dereference /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10 ,py
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/libpython2.7.so.1.0 and ,py/lib/libpython2.7.so.1.0 differ
diff -r --no-dereference /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/config/Makefile ,py/lib/python2.7/config/Makefile
31,32c31,32
< abs_srcdir=	/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10
< abs_builddir=	/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10
---
> abs_srcdir=	/gnu/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10
> abs_builddir=	/gnu/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10
146c146
< RUNSHARED=       LD_LIBRARY_PATH=/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10
---
> RUNSHARED=       LD_LIBRARY_PATH=/gnu/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/getopt.pyc and ,py/lib/python2.7/getopt.pyc differ
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/getopt.pyo and ,py/lib/python2.7/getopt.pyo differ
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/lib2to3/Grammar2.7.10.final.0.pickle and ,py/lib/python2.7/lib2to3/Grammar2.7.10.final.0.pickle differ
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/lib-dynload/array.so and ,py/lib/python2.7/lib-dynload/array.so differ
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/lib-dynload/gdbm.so and ,py/lib/python2.7/lib-dynload/gdbm.so differ
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/lib-dynload/pyexpat.so and ,py/lib/python2.7/lib-dynload/pyexpat.so differ
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/py_compile.pyc and ,py/lib/python2.7/py_compile.pyc differ
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/py_compile.pyo and ,py/lib/python2.7/py_compile.pyo differ
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/struct.pyc and ,py/lib/python2.7/struct.pyc differ
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/struct.pyo and ,py/lib/python2.7/struct.pyo differ
diff -r --no-dereference /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/_sysconfigdata.py ,py/lib/python2.7/_sysconfigdata.py
458c458
<  'RUNSHARED': 'LD_LIBRARY_PATH=/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10',
---
>  'RUNSHARED': 'LD_LIBRARY_PATH=/gnu/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10',
502c502
<  'TESTPYTHON': 'LD_LIBRARY_PATH=/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10 ./python -Wd -3 -E -tt',
---
>  'TESTPYTHON': 'LD_LIBRARY_PATH=/gnu/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10 ./python -Wd -3 -E -tt',
526,527c526,527
<  'abs_builddir': '/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10',
<  'abs_srcdir': '/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10',
---
>  'abs_builddir': '/gnu/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10',
>  'abs_srcdir': '/gnu/tmp/nix-build-python-2.7.10.drv-0/Python-2.7.10',
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/_sysconfigdata.pyc and ,py/lib/python2.7/_sysconfigdata.pyc differ
Binary files /gnu/store/q405y94pbnx028mygranaww5pnbqhnq1-python-2.7.10/lib/python2.7/_sysconfigdata.pyo and ,py/lib/python2.7/_sysconfigdata.pyo differ
--8<---------------cut here---------------end--------------->8---

The pyc/pyo differ by one 32-bit value starting on the 5th byte of the
file.

Ludo’.

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