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https://issues.apache.org/jira/browse/MNG-4600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16286162#comment-16286162
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Hudson commented on MNG-4600:
-----------------------------
Build unstable in Jenkins: Maven TLP (wip) » maven » pre-reset-master #3
See https://builds.apache.org/job/maven-wip/job/maven/job/pre-reset-master/3/
> [regression] Optional flag from dependency management applied to dependencies
> -----------------------------------------------------------------------------
>
> Key: MNG-4600
> URL: https://issues.apache.org/jira/browse/MNG-4600
> Project: Maven
> Issue Type: Bug
> Components: Dependencies
> Affects Versions: 3.0-alpha-7
> Environment: Apache Maven 3.0-alpha-7 (r921173; 2010-03-09
> 23:31:07+0100)
> Java version: 1.5.0_17
> Java home: c:\projet\MM\outils\jdk\1.5.0\jre
> Default locale: fr_FR, platform encoding: Cp1252
> OS name: "windows xp" version: "5.1" arch: "x86" Family: "windows"
> Reporter: Baptiste MATHUS
> Assignee: Benjamin Bentmann
> Fix For: 3.0-beta-1
>
> Attachments: bug-maven.zip
>
>
> The situation is quite complex to explain. I've a parent pom that defines
> dependencies in depMgmt. There's two projects in the multimodule project, the
> second depending on the first.
> Excerpt (parent/depMgmt):
> {code:xml}<dependency>
> <groupId>ch.qos.logback</groupId>
> <artifactId>logback-classic</artifactId>
> <version>${logback.version}</version>
> <scope>runtime</scope>
> <optional>true</optional>{code}
> First child (redefines scope only):
> {code:xml}<dependency>
> <groupId>ch.qos.logback</groupId>
> <artifactId>logback-classic</artifactId>
> <scope>compile</scope>
> </dependency>{code}
> Second child:
> {code:xml}<dependency>
> <groupId>org.slf4j</groupId>
> <artifactId>slf4j-api</artifactId>
> </dependency>
> <dependency>
> <groupId>m3pb</groupId>
> <artifactId>subproject1</artifactId>
> <version>${project.version}</version>
> </dependency>{code}
> When running with maven 2, it works. When ran with maven 3, it fails on the
> second project, with a NoClassDefFoundError on the logback jar.
> I seem to understand this is actually a bug in maven 2: as the depMgmt
> defines optional=true, it shouldn't have been working in maven2 without
> redeclaring the dependency in the second project.
> From my understanding:
> * With maven 2, the transivity is taken in account and gives logback through
> the subproject1 link (from the second)
> * With maven 3, this just doesn't work and this is the correct behaviour.
> Please excuse my basic analysis.
> I'm attaching a test project to let see more precisely the problem.
> If you need any help, please let me know.
> Cheers
> --
> Baptiste
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