GNU bug report logs - #23776
Perl's .pod files include timestamps, making Perl package builds non-deterministic

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From: ludo <at> gnu.org (Ludovic Courtès)
To: Leo Famulari <leo <at> famulari.name>
Cc: 23776 <at> debbugs.gnu.org
Subject: bug#23776: Perl's .pod files include timestamps, making Perl package builds non-deterministic
Date: Fri, 17 Jun 2016 10:11:21 +0200

Leo Famulari <leo <at> famulari.name> skribis:

> On Thu, Jun 16, 2016 at 01:33:46PM +0200, Ludovic Courtès wrote:
>> The problem is described in <git://git.debian.org/git/reproducible/notes.git>:
>> 
>> --8<---------------cut here---------------start------------->8---
>> timestamps_in_documentation_generated_by_podman:
>>   description: |
>>     The module Pod::Man includes timestamps in its embedded manpages:
>>     http://sources.debian.net/src/perl/latest/cpan/podlators/lib/Pod/Man.pm/?hl=1700#L977
>>     They should be based on the mtime of the original file.
>>   url: https://wiki.debian.org/ReproducibleBuilds/TimestampsInManpagesGeneratedByPodMan
>
> According to the information on this page, we should set POD_MAN_DATE
> while building. Should we make the perl-build-system export this
> variable? Set to SOURCE_DATE_EPOCH?

Yes, that sounds like a good idea.

Thanks,
Ludo’.

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