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bug#23776: Perl's .pod files include timestamps, making Perl package bui
From: |
Ludovic Courtès |
Subject: |
bug#23776: Perl's .pod files include timestamps, making Perl package builds non-deterministic |
Date: |
Wed, 11 Jan 2017 23:27:11 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) |
Leo Famulari <address@hidden> skribis:
> On Thu, Jun 16, 2016 at 11:39:27AM -0400, Leo Famulari wrote:
>> 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?
>
> I noticed that Pod::Man is supposed to respect SOURCE_DATE_EPOCH, as of
> the upstream module version 4.03 (released 2015-12-06). Does anyone know
> how to check the version of the module bundled into perl?
For the record, even though Pod::Man supposedly honors SOURCE_DATE_EPOCH
as of Perl 5.24, we still have this problem:
--8<---------------cut here---------------start------------->8---
$ diff -r
/gnu/store/hczskszmhm2l65vy8nv990lzc5dk3ln9-perl-algorithm-c3-0.10{,-check}
diff -r
/gnu/store/hczskszmhm2l65vy8nv990lzc5dk3ln9-perl-algorithm-c3-0.10/lib/perl5/5.24.0/x86_64-linux-thread-multi/perllocal.pod
/gnu/store/hczskszmhm2l65vy8nv990lzc5dk3ln9-perl-algorithm-c3-0.10-check/lib/perl5/5.24.0/x86_64-linux-thread-multi/perllocal.pod
1c1
< =head2 Wed Jan 11 22:20:36 2017: C<Module> L<Algorithm::C3|Algorithm::C3>
---
> =head2 Wed Jan 11 22:20:34 2017: C<Module> L<Algorithm::C3|Algorithm::C3>
--8<---------------cut here---------------end--------------->8---
Ludo’.
- bug#23776: Perl's .pod files include timestamps, making Perl package builds non-deterministic,
Ludovic Courtès <=