Thank you for the patch. It can be even simpler by setting the
build.time property in debian/rules instead of patching the upstream
build. This will look like this:
DEB_ANT_ARGS := -Dbuild.time='$(shell dpkg-parsechangelog --show-field
With Ant the properties defined on the command line take precedence on
the properties defined in the build file. I'll upload the fix shortly.
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