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https://issues.apache.org/jira/browse/MJAVADOC-619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16900409#comment-16900409
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Emmanuel Bourg commented on MJAVADOC-619:
-----------------------------------------
The patch I implemented in Debian is about supporting [SOURCE_DATE_EPOCH
|https://reproducible-builds.org/docs/source-date-epoch/] in the Javadoc
plugin. The adoption of SOURCE_DATE_EPOCH is slowly growing across a wide
variety of tools, but as I understand there is still some resistance to support
it in the Maven ecosystem (mostly because the environment variable approach
looks a bit hackish, but that's really the lowest and only common denominator
of very different tool ecosystems).
Maybe a less controversial change would be to use the build date in the javadoc
plugin (from {{MavenSession.getStartTime()}}) instead of the current date. So
if at some point there is an agreed upon mechanism to override the build date
centrally (either by supporting SOURCE_DATE_EPOCH, using the date of pom.xml,
or a mix of both) then the javadoc plugin will benefit from it. And this would
allow Debian to drop its patch since the build date is already
[overridden|https://salsa.debian.org/java-team/maven/blob/master/debian/patches/reproducible-build-timestamp.patch].
There would be just one issue left to override the timezone to property format
the date.
> Maven Javadoc bottom claims copyright for future years
> ------------------------------------------------------
>
> Key: MJAVADOC-619
> URL: https://issues.apache.org/jira/browse/MJAVADOC-619
> Project: Maven Javadoc Plugin
> Issue Type: Bug
> Affects Versions: 3.1.1
> Reporter: Bernhard M. Wiedemann
> Priority: Major
>
> Originally filed at https://issues.apache.org/jira/browse/MCOMPILER-380
> [https://maven.apache.org/plugins/maven-javadoc-plugin/javadoc-mojo.html#bottom]
> includes {{{currentYear}}}
> [https://github.com/bmwiedemann/theunreproduciblepackage/tree/master/timestamp/copyright]
> explains why this is bad (not only for reproducible builds)
>
> Debian worked already around this with
> [https://sources.debian.org/src/maven-javadoc-plugin/2.10.4-1/debian/patches/reproducible-footer.patch/]
> but I think, this warrants a more general patch.
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