From <https://bugs.debian.org/801523>.

From c01f602d1926b0671fd2c8d91f7e52c4e4c9fb24 Mon Sep 17 00:00:00 2001
From: Niko Tyni <ntyni@debian.org>
Date: Sun, 11 Oct 2015 19:27:56 +0300
Subject: [PATCH] Sort the list of XS code files when generating RealPPPort.xs

all_files_in_dir() uses readdir() ordering to make the list of
input files. This can vary between build systems, breaking build
reproducibility.
---
 cpan/Devel-PPPort/PPPort_xs.PL | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cpan/Devel-PPPort/PPPort_xs.PL b/cpan/Devel-PPPort/PPPort_xs.PL
index 5f18940..149f2fe 100644
--- a/cpan/Devel-PPPort/PPPort_xs.PL
+++ b/cpan/Devel-PPPort/PPPort_xs.PL
@@ -38,7 +38,7 @@ END
 my $file;
 my $sec;
 
-for $file (all_files_in_dir('parts/inc')) {
+for $file (sort(all_files_in_dir('parts/inc'))) {
   my $spec = parse_partspec($file);
 
   my $msg = 0;
-- 
2.5.1
td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=e6b2552a96b328d81f681c2ae17c54a795ab2547'>refs</a><a class='active' href='/guix/log/gnu/services/cgit.scm'>log</a><a href='/guix/tree/gnu/services/cgit.scm?id=e6b2552a96b328d81f681c2ae17c54a795ab2547'>tree</a><a href='/guix/commit/gnu/services/cgit.scm?id=e6b2552a96b328d81f681c2ae17c54a795ab2547'>commit</a><a href='/guix/diff/gnu/services/cgit.scm?id=e6b2552a96b328d81f681c2ae17c54a795ab2547'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/services/cgit.scm'>
<input type='hidden' name='id' value='e6b2552a96b328d81f681c2ae17c54a795ab2547'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=e6b2552a96b328d81f681c2ae17c54a795ab2547'>root</a>/<a href='/guix/log/gnu?id=e6b2552a96b328d81f681c2ae17c54a795ab2547'>gnu</a>/<a href='/guix/log/gnu/services?id=e6b2552a96b328d81f681c2ae17c54a795ab2547'>services</a>/<a href='/guix/log/gnu/services/cgit.scm?id=e6b2552a96b328d81f681c2ae17c54a795ab2547'>cgit.scm</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/services/cgit.scm?id=e6b2552a96b328d81f681c2ae17c54a795ab2547&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>