Bug#1037235: gradle-kotlin-dsl: reproducible-builds: generated classpath files differ when /bin/sh -> bash

[Vagrant Cascadian]

Source: gradle-kotlin-dsl
Severity: normal
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: shell
X-Debbugs-Cc: reproducible-bugs at lists.alioth.debian.org

When /bin/sh points to bash vs. dash, two classpath files get generated
different with different content.

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

  runtime=annotations-13.0.jar,gradle-kotlin-dsl-tooling-models.jar ...
  vs.
  projects=\nruntime=annotations-13.0.jar,gradle-kotlin-dsl-tooling-models.jar ...

The attached patch fixes this in debian/rules by using printf instead of
echo, as echo implementations vary in the handling of "\n" in different
shells.

According to my local tests, applying this patch should make
gradle-jotlin-dsl build reproducibly on tests.reproducible-builds.org!

Thanks for maintaining gradle-kotlin-dsl!

live well,
  vagrant
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