[Reproducible-builds] Bug#827115: netpbm: please honour SOURCE_DATE_EPOCH to allow reproducible output

[Alexis Bienvenüe]

Package: netpbm
Version: 2:10.0-15.3
Severity: wishlist
Tags: patch upstream
User: reproducible-builds at lists.alioth.debian.org
Usertags: toolchain
X-Debbugs-Cc: reproducible-builds at lists.alioth.debian.org

Dear Maintainer,

While working on the "reproducible builds" effort [1], we have noticed
that some packages (like latex2html) use one of the netpbm utilities in
their process, leading to unreproducible output (due to the use of the
random generator, seeded from a time() call).

To solve this kind of issues, it would be nice to make netpbm support
the SOURCE_DATE_EPOCH environment variable [2].

See the attached patch for a proposed solution.

Regards,
Alexis Bienvenüe.

[1] https://wiki.debian.org/ReproducibleBuilds
[2] https://reproducible-builds.org/specs/source-date-epoch/


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