# HG changeset patch
# User Bernhard M. Wiedemann <bwiedemann@suse.de>
# Date 1502609999 -7200
#      Sun Aug 13 09:39:59 2017 +0200
# Node ID a98e00eed893f62dd8349fc2894abca3aff4b33a
# Parent  41ce01b7d413b3654211da0147857e7d6a1495de
Facilitate reproducible builds
by allowing to externally hold constant the build date and time.
See
        https://reproducible-builds.org/specs/source-date-epoch/

Backport asap.

diff -r 41ce01b7d413 -r a98e00eed893 NEWS
--- a/NEWS	Sun Aug 13 09:39:56 2017 +0200
+++ b/NEWS	Sun Aug 13 09:39:59 2017 +0200
@@ -48,6 +48,12 @@
           https://github.com/akrzemi1/Optional
   where only "optional.hpp" is needed.
 
+- The environment variable SOURCE_DATE_EPOCH overrides the build
+  timestamp as recorded by the signatures.  See
+          https://reproducible-builds.org/specs/source-date-epoch/
+  for details.
+
+
 
 * Version 4.2  "Compressor Road"
 
diff -r 41ce01b7d413 -r a98e00eed893 src/DefaultSig.pm
--- a/src/DefaultSig.pm	Sun Aug 13 09:39:56 2017 +0200
+++ b/src/DefaultSig.pm	Sun Aug 13 09:39:59 2017 +0200
@@ -109,9 +109,10 @@
 sub update_date_and_time {
     my $self = shift;
 
+    my $now = $ENV{SOURCE_DATE_EPOCH} || time;
     my ($second, $minute, $hour,
         $day_of_month, $month, $year,
-        $day_of_week) = $self->is_using_gmt() ? gmtime : localtime;
+        $day_of_week) = $self->is_using_gmt() ? gmtime($now) : localtime($now);
 
     $self->{DATE} = $self->format_date($day_of_month, $month, $year + 1900, $day_of_week,
                                        $self->weekdays->[$day_of_week],
ce144f17644ceebd3d08723aa244696a05'>commit</a><a href='/guix/diff/gnu/packages/patches/flatpak-unset-gdk-pixbuf-for-sandbox.patch?id=cdbd81ce144f17644ceebd3d08723aa244696a05'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/patches/flatpak-unset-gdk-pixbuf-for-sandbox.patch'>
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<div class='path'>path: <a href='/guix/log/?id=cdbd81ce144f17644ceebd3d08723aa244696a05'>root</a>/<a href='/guix/log/gnu?id=cdbd81ce144f17644ceebd3d08723aa244696a05'>gnu</a>/<a href='/guix/log/gnu/packages?id=cdbd81ce144f17644ceebd3d08723aa244696a05'>packages</a>/<a href='/guix/log/gnu/packages/patches?id=cdbd81ce144f17644ceebd3d08723aa244696a05'>patches</a>/<a href='/guix/log/gnu/packages/patches/flatpak-unset-gdk-pixbuf-for-sandbox.patch?id=cdbd81ce144f17644ceebd3d08723aa244696a05'>flatpak-unset-gdk-pixbuf-for-sandbox.patch</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/patches/flatpak-unset-gdk-pixbuf-for-sandbox.patch?id=cdbd81ce144f17644ceebd3d08723aa244696a05&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-03-08 08:52:57 +0200'>2023-03-08</span></td><td><a href='/guix/commit/gnu/packages/patches/flatpak-unset-gdk-pixbuf-for-sandbox.patch?id=c4a8a88e8749cb20828a8b9e196980b8090c1c0f'>gnu: flatpak: Update to 1.14.3.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/package-management.scm (flatpak): Update to 1.14.3.
* gnu/packages/patches/flatpak-unset-gdk-pixbuf-for-sandbox.patch:
Refresh patch.
</span></span></td><td>Efraim Flashner</td></tr>