Add explicit transitive dependencies in dependencyManagement section of pom.xml
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Key: MNG-3696
URL: http://jira.codehaus.org/browse/MNG-3696
Project: Maven 2
Issue Type: New Feature
Components: Dependencies
Affects Versions: 2.0.9
Reporter: Joel Turkel
Transitive dependencies cause lots of headaches and require a fair amount of
manual intervention to fix conflicts. It is common to see a pom with the
following scenario:
<dependencyManagement>
<dependencies>
<!-- Must manually include com.other.common when using
com.sample.foo -->
<dependency>
<groupId>com.sample</groupId>
<artifactId>foo</artifactId>
<version>1</version>
<exclusions>
<!-- com.sample.foo includes old version 1 of
com.other.common -->
<exclusion>
<groupId>com.other</groupId>
<artifactId>common</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.other</groupId>
<artifactId>common</artifactId>
<version>2</version>
</dependency>
<dependency>
<groupId>com.sample</groupId>
<artifactId>bar</artifactId>
<version>3</version>
<!-- com.sample.foo includes version 2 of
com.other.common -->
</dependency>
</dependencies>
</dependencyManagement>
This is problematic because descendant poms must manually include the
com.other.common dependency when including the com.sample.foo dependency. The
word around is creating separate pom projects to manage the dependencies, but
this doesn't do a great job of expressing intent, leads to a proliferation of
projects, and makes dependency management more difficult since it's scattered
over multiple poms.
Ideally users should be allowed to specify inclusions in the dependency
management section of the pom e.g. something like:
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.sample</groupId>
<artifactId>foo</artifactId>
<version>1</version>
<!-- com.sample.foo includes old version 1 of
com.other.common -->
<exclusions>
<exclusion>
<groupId>com.other</groupId>
<artifactId>common</artifactId>
</exclusion>
</exclusions>
<inclusions>
<inclusion>
<groupId>com.other</groupId>
<artifactId>common</artifactId>
<version>2</version>
</inclusion>
</inclusions>
</dependency>
<dependency>
<groupId>com.sample</groupId>
<artifactId>bar</artifactId>
<version>3</version>
<!-- com.sample.foo includes version 2 of
com.other.common -->
</dependency>
</dependencies>
</dependencyManagement>
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