[Git][reproducible-builds/specs/source-date-epoch-spec][beware] Add warning about rsync

[Bernhard M. Wiedemann (@bmwiedemann-guest)]

Bernhard M. Wiedemann pushed to branch beware at Reproducible Builds / specs / source-date-epoch-spec


Commits:
90ed01ec by Bernhard M. Wiedemann at 2026-10-16T15:09:21+02:00
Add warning about rsync

- - - - -


1 changed file:

- source-date-epoch-spec.xml


Changes:

=====================================
source-date-epoch-spec.xml
=====================================
@@ -224,6 +224,20 @@
 	</sect2>
 </sect1>
 
+<sect1>
+	<title>Beware</title>
+	<sect2>
+		<title>rsync problems</title>
+		<para>
+			When normalizing modification times of files to <envar>SOURCE_DATE_EPOCH</envar>,
+			one has to remember that by default <command>rsync</command> will skip files
+			if their size and mtime values match the ones on the destination.
+			Because of that, several Linux distributions have found it necessary to increase the value
+			each time a rebuild (with new inputs) is done.
+		</para>
+	</sect2>
+</sect1>
+
 <sect1>
 	<title>Copyright</title>
 	<para>



View it on GitLab: https://salsa.debian.org/reproducible-builds/specs/source-date-epoch-spec/-/commit/90ed01eca5f3ce3531708912eb23d8f873be7fc2

-- 
View it on GitLab: https://salsa.debian.org/reproducible-builds/specs/source-date-epoch-spec/-/commit/90ed01eca5f3ce3531708912eb23d8f873be7fc2
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