Bug#870585: hevea: Please support SOURCE_DATE_EPOCH

[Johannes Schauer <josch@debian.org>]

Package: hevea
Version: 2.29-1
Severity: wishlist
Tags: patch
User: reproducible-builds@lists.alioth.debian.org
Usertags: timestamps toolchain

Hi,

currently, latex sources which include statements like \today and thus
have to be built with '-exec xxdate.exe' do not respect the timestamp
set via the environment variable SOURCE_DATE_EPOCH. Thus, source
packages using hevea in this way are currently not reproducible. A quick
check revealed that this affects at least src:dose3 and src:whizzytex.

Since xxdate.exe is just a shell script, the fix is simple. Please
consider applying the patch at the bottom of this email to make packages
using hevea build reproducibly.

Thanks!

cheers, josch

diff --git a/xxdate.exe b/xxdate.exe
index 31e48a4..2b86087 100755
--- a/xxdate.exe
+++ b/xxdate.exe
@@ -1,17 +1,18 @@
 #! /bin/sh
+SDE="@${SOURCE_DATE_EPOCH:-$(date +%s)}"
 cat <<EOF
 %% TeX counters
-\newcounter{year}\setcounter{year}{`date +"%Y" 2> /dev/null || date | awk '{print $NF}'`}
-\newcounter{month}\setcounter{month}{`date +"%m"`}
-\newcounter{day}\setcounter{day}{`date +"%d"`}
-\newcounter{time}\setcounter{time}{60 * `date +"%H"` + `date +"%M"`}
+\newcounter{year}\setcounter{year}{`date --utc --date=$SDE +"%Y" 2> /dev/null || date --utc --date=$SDE | awk '{print $NF}'`}
+\newcounter{month}\setcounter{month}{`date --utc --date=$SDE +"%m"`}
+\newcounter{day}\setcounter{day}{`date --utc --date=$SDE +"%d"`}
+\newcounter{time}\setcounter{time}{60 * `date --utc --date=$SDE +"%H"` + `date --utc --date=$SDE +"%M"`}
 %% Extras
-\newcounter{hour}\setcounter{hour}{`date +"%H"`}
+\newcounter{hour}\setcounter{hour}{`date --utc --date=$SDE +"%H"`}
 \newcounter{Hour}\setcounter{Hour}{\value{hour}-(\value{hour}/12)*12}
-\newcounter{weekday}\setcounter{weekday}{`date +"%w"`}
-\newcounter{minute}\setcounter{minute}{`date +"%M"`}
-\newcounter{second}\setcounter{second}{`date +"%S"`}
+\newcounter{weekday}\setcounter{weekday}{`date --utc --date=$SDE +"%w"`}
+\newcounter{minute}\setcounter{minute}{`date --utc --date=$SDE +"%M"`}
+\newcounter{second}\setcounter{second}{`date --utc --date=$SDE +"%S"`}
 \def\ampm{\ifthenelse{\value{hour}>12}{PM}{AM}}
-\def\timezone{`date +"%Z" 2> /dev/null || date | awk '{print $5}'`}
-\def\heveadate{`date`}
+\def\timezone{`date --utc --date=$SDE +"%Z" 2> /dev/null || date --utc --date=$SDE | awk '{print $5}'`}
+\def\heveadate{`date --utc --date=$SDE`}
 EOF
\ No newline at end of file