Bug#1121406: clhep: reproducible-builds: build date in PDF file

[Vagrant Cascadian]

Source: clhep
Severity: normal
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: timestamps
X-Debbugs-Cc: reproducible-bugs at lists.alioth.debian.org

The date is embedded in a shipped PDF file:

  https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/diffoscope-results/clhep.html

  ./usr/share/doc/clhep/GenericFunctions/genericFunctions.pdf.gz

  November·24,·2025
  vs.
  December·27,·2026

The attached patch sets FORCE_SOURCE_DATE in debian/rules to ensure that
texlive respects SOURCE_DATE_EPOCH for a reproducible date.

According to my local tests, with this patch applied clhep should
build reproducibly on tests.reproducible-builds.org!

Thanks for maintaining clhep!

live well,
  vagrant
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