Here’s an example:
--8<---------------cut here---------------start------------->8---
$ diff -ru /gnu/store/fmib129w05hbwbikd7x48s37hvr8nrdf-perl-io-stringy-2.110
/gnu/store/fmib129w05hbwbikd7x48s37hvr8nrdf-perl-io-stringy-2.110-check
diff -ru
/gnu/store/fmib129w05hbwbikd7x48s37hvr8nrdf-perl-io-stringy-2.110/lib/perl5/5.22.1/x86_64-linux/perllocal.pod
/gnu/store/fmib129w05hbwbikd7x48s37hvr8nrdf-perl-io-stringy-2.110-check/lib/perl5/5.22.1/x86_64-linux/perllocal.pod
---
/gnu/store/fmib129w05hbwbikd7x48s37hvr8nrdf-perl-io-stringy-2.110/lib/perl5/5.22.1/x86_64-linux/perllocal.pod
1970-01-01 01:00:01.000000000 +0100
+++
/gnu/store/fmib129w05hbwbikd7x48s37hvr8nrdf-perl-io-stringy-2.110-check/lib/perl5/5.22.1/x86_64-linux/perllocal.pod
1970-01-01 01:00:01.000000000 +0100
@@ -1,4 +1,4 @@
-=head2 Thu Jun 16 11:29:36 2016: C<Module> L<IO::Stringy|IO::Stringy>
+=head2 Thu Jun 16 11:29:34 2016: C<Module> L<IO::Stringy|IO::Stringy>
=over 4
--8<---------------cut here---------------end--------------->8---
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
deterministic: True
--8<---------------cut here---------------end--------------->8---
Ludo’.