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https://issues.apache.org/jira/browse/MARTIFACT-44?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17690950#comment-17690950
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Niels Basjes commented on MARTIFACT-44:
---------------------------------------
[~hboutemy] I have added a reproduction for this problem as an integration test
for the project.
https://github.com/apache/maven-artifact-plugin/pull/16
> Handling the dependency-reduced-pom.xml
> ---------------------------------------
>
> Key: MARTIFACT-44
> URL: https://issues.apache.org/jira/browse/MARTIFACT-44
> Project: Maven Artifact Plugin
> Issue Type: Bug
> Reporter: Niels Basjes
> Priority: Major
> Labels: pull-request-available
>
> In my projects I often use the *maven-shade-plugin* to include specific
> dependencies in the final jar.
> I do this to avoid version conflicts in dependencies that are very version
> sensitive like the Antlr4 runtime ( See
> [https://yauaa.basjes.nl/developer/shadingdependencies/] ).
> So in practice I use the following shading options
> * relocate: to different package name
> * minimizeJar: to only keep what is needed
> * *useDependencyReducedPomInJar* : to make sure that down stream
> applications do not include the original dependencies anymore that have
> already been included.
> https://maven.apache.org/plugins/maven-shade-plugin/shade-mojo.html#useDependencyReducedPomInJar
>
> An important note about the useDependencyReducedPomInJar is that the actual
> *pom.xml* that is placed in the jar file has been generated during the build
> and is thus very different from the *pom.xml* file that is part of the source
> code.
> When I now run the *compare* goal of this artifact plugin I get this:
> {code:java}
> [ERROR] size mismatch yauaa-7.13.1-SNAPSHOT.pom: investigate with diffoscope
> analyzer/target/reference/yauaa-7.13.1-SNAPSHOT.pom analyzer/pom.xml {code}
> To me this looks like the goal is comparing the pom of the published jar
> (generated file; without the shaded dependencies) with the source file (with
> the shaded dependencies).
> If I do this
> {code:java}
> $ diffoscope analyzer/target/reference/yauaa-7.13.1-SNAPSHOT.pom
> analyzer/dependency-reduced-pom.xml {code}
> They are equal.
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