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

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Message #8 received at 23776 <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 23776 <at> debbugs.gnu.org
Subject: Re: bug#23776: Perl's .pod files include timestamps, making Perl
 package builds non-deterministic
Date: Thu, 16 Jun 2016 11:39:27 -0400

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?

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