Bug#1069709: dpb: please make the build reproducible

["Chris Lamb" <lamby@debian.org>]

Source: dpb
Version: 0.0~git20240401+4c3057874
Severity: wishlist
Tags: patch
User: reproducible-builds@lists.alioth.debian.org
Usertags: timestamps
X-Debbugs-Cc: reproducible-bugs@lists.alioth.debian.org

Hi,

Whilst working on the Reproducible Builds effort [0], we noticed that
dpb could not be built reproducibly.

This is because it embedded timestamps in .pdf files and in "generated
on.." comments in  various scripts. (Ideally the latter could be
removed entirely.)

Patch attached.

 [0] https://reproducible-builds.org/


Regards,

-- 
      ,''`.
     : :'  :     Chris Lamb
     `. `'`      lamby@debian.org / chris-lamb.co.uk
       `-


--- a/create-buildscript.sh	2024-04-23 09:54:18.460456472 +0100
--- b/create-buildscript.sh	2024-04-23 10:03:12.374039772 +0100
@@ -11,7 +11,7 @@
 "
 
 cat Title.nw Part1.nw Part2.nw Part3.nw Part4.nw Part5.nw Part6.nw > BuildWithGBPg.nw
-t=`date +%c`
+t=$(date --utc --date="@${SOURCE_DATE_EPOCH:-$(date +%s)}" -R)
 
 function build_script()
 {
--- a/debian/rules	2024-04-23 09:54:18.460456472 +0100
--- b/debian/rules	2024-04-23 09:59:42.766516568 +0100
@@ -5,6 +5,7 @@
 
 export DH_VERBOSE=1
 export DH_OPTIONS=-v
+export FORCE_SOURCE_DATE=1
 
 %:
 	dh $@