Bug#990253: pmix: reproducible builds: Embeds build username and hostname in binaries

[Vagrant Cascadian]

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

The build username and build system hostname are embedded in binaries
shipped in pmix:

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

  ./usr/bin/pmix_info

  PMIx·pbuilder1 at ionos5-amd64·Distribution
  vs.
  PMIx·pbuilder2 at i-capture-the-hostname·Distribution

The attached patch fixes this by setting USER and HOSTNAME from
debian/rules, as documented in the upstream README.

This patch does not address all reproducibility issues in pmix
(e.g. build paths), though applying it reduces the diff for the
remaining issues.

Thanks for maintaining pmix!

live well,
  vagrant
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