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http://jira.codehaus.org/browse/MPIR-188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=217963#action_217963
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Benjamin Bentmann commented on MPIR-188:
----------------------------------------
For the record: Future versions of Maven (3.x) will force you to specify the
plugin version you want. This is the only way to reach a stable/reproducible
build. The idea that the "most recent version" resembles the best available for
a certain build is an utopia.
> Maven constructs wrong classpath element
> ----------------------------------------
>
> Key: MPIR-188
> URL: http://jira.codehaus.org/browse/MPIR-188
> Project: Maven 2.x Project Info Reports Plugin
> Issue Type: Bug
> Components: dependencies
> Affects Versions: 2.1
> Reporter: David Biesack
> Assignee: Benjamin Bentmann
> Attachments: MNG-4613.tar, MPIR-188.tar
>
>
> We run Maven 2 builds from Cruise Control; the projects each build with the
> same targets:
> clean jar:test-jar site-deploy deploy
> Unfortunately, this causes the unit tests to run twice, once for site-deploy
> (surefire reports) and once for deploy.
> Under 2.0.9 this was not a problem, but we recently switched to 2.2.1 and
> some tests were failing
> because the test classpath constructed for the first set of test runs differs
> from the classpath for the second.
> In the pom file, there is a dependency from the current project to both the
> normal jar *and* the test jar of
> another project:
> <dependency>
> <groupId>com.sas.other</groupId>
> <artifactId>sas.other</artifactId>
> <version>1.0-SNAPSHOT</version>
> <type>test-jar</type>
> <scope>test</scope>
> </dependency>
> <dependency>
> <groupId>com.sas.other</groupId>
> <artifactId>sas.other</artifactId>
> <version>1.0-SNAPSHOT</version>
> </dependency>
> The first test run contains
> [DEBUG]
> /u/acladmin/.m2/repository/com/sas/other/sas.other/1.0-SNAPSHOT/sas.other-1.0-SNAPSHOT-tests.jar
> ...
> [DEBUG]
> /u/acladmin/.m2/repository/com/sas/other/sas.other/1.0-SNAPSHOT/sas.other-1.0-SNAPSHOT.jar
> However, when we build with Maven 2.2.1, the classpath of the second test run
> is different:
> [DEBUG]
> /u/acladmin/.m2/repository/com/sas/other/sas.other/1.0-SNAPSHOT/sas.other-1.0-SNAPSHOT.jar
> ...
> [DEBUG]
> /u/acladmin/.m2/repository/com/sas/other/sas.other/1.0-SNAPSHOT/sas.other-1.0-SNAPSHOT.jar
> Because the classpath is missing a jar, the tests fail, and hence the entire
> build fails.
> If we run the targets separately
> mvn clean deploy
> mvn site-deploy
> then maven only runs the tests once per run, with the correct classpath, so
> the test and the entire build passes.
> This looks like a regression between 2.0.9 and 2.2.1. Sorry, we did not
> install/test other intermediate releases.
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