Bug#877470: bsh; please make the build reproducible (timestamps)

[jathan]

Source: bsh
Version: 2.0b4-18
Severity: wishlist
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: timestamps
X-Debbugs-Cc: reproducible-bugs at lists.alioth.debian.org

Hi!

While working on the “reproducible builds” effort [1], we have noticed
that bsh could not be built reproducibly.

The attached patch clamps the timestamps to the changelog timestamp when
creating the source archive. Once applied, bsh can be built reproducibly
in our current experimental framework. Best regards.

Jathan

 [1]: https://wiki.debian.org/ReproducibleBuilds

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diff -Nru bsh-2.0b4/debian/changelog bsh-2.0b4/debian/changelog
--- bsh-2.0b4/debian/changelog	2016-05-30 12:14:02.000000000 -0500
+++ bsh-2.0b4/debian/changelog	2017-10-01 22:01:37.000000000 -0500
@@ -1,3 +1,10 @@
+bsh (2.0b4-18.1) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * Fix timestamps_in_tarball reproducible build issue.
+
+ -- Jonathan Bustillos <jathanblackred at openmailbox.org>  Sun, 01 Oct 2017 22:01:37 -0500
+
 bsh (2.0b4-18) unstable; urgency=medium
 
   * Team upload.
diff -Nru bsh-2.0b4/debian/rules bsh-2.0b4/debian/rules
--- bsh-2.0b4/debian/rules	2016-05-30 12:06:22.000000000 -0500
+++ bsh-2.0b4/debian/rules	2017-10-01 22:00:30.000000000 -0500
@@ -1,6 +1,7 @@
 #!/usr/bin/make -f
 # debian/rules file for bsh (uses cdbs)
 
+SOURCE_DATE_EPOCH       ?= $(shell dpkg-parsechangelog -STimestamp)
 include /usr/share/cdbs/1/rules/debhelper.mk
 include /usr/share/cdbs/1/class/ant.mk
 
@@ -29,6 +30,7 @@
 install/bsh-src:: binary-install/bsh-doc
 	mkdir -p debian/bsh-src/usr/src/bsh-src
 	tar --exclude debian --exclude classes --exclude dist --exclude api \
+	  --clamp-mtime --mtime="$(SOURCE_DATE_EPOCH)" \
 		-zcf debian/bsh-src/usr/src/bsh-src/bsh.tar.gz *
 
 binary-fixup/bsh-doc::
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