Bug#1035704: proj: reproducible-builds: timezone-dependent timestamps in .gsb/.gtx files

[Vagrant Cascadian]

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

Various .gsb and .gtx files get touched in the build process in a way
that results in a timezone-dependent timestamp for these files in the
shipped package:

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

  -rw-r--r--···0·root·········(0)·root·········(0)····83696·2018-02-22·07:28:23.000000·./usr/share/proj/BETA2007.gsb
  vs.
  -rw-r--r--···0·root·········(0)·root·········(0)····83696·2018-02-21·05:28:23.000000·./usr/share/proj/BETA2007.gsb

The attached patch fixes this by not touching these files during the
build process.

According to my local tests, with this patch applied, proj should build
reproducibly on tests.reproducible-builds.org once it lands in
bookworm/testing!

Unfortunately, there are unresolved issues with build paths, which are
tested in unstable and experimental, so will not show as reproducible
there without further fixes.


Thanks for maintaining proj!


live well,
  vagrant
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