I haven't run into this use case, but I would think it should work. Have you
tried other Maven versions like 2.0.x? Also, I would strongly suggest you
try out 3.0-alpha-5. My experience is that errors that I've run into with
the 2.x code is fixed in 3.0.

/Anders

On Mon, Dec 7, 2009 at 23:29, Mike Olson <[email protected]> wrote:

>
> Hello,
>
>  This is with Maven 2.2.1.
>
>  I have an aggregate POM file that contains 2 child projects, say project A
> and project B.
>
>  Each of these child projects uses a custom build plugin.  Project A calls
> it like
>
>   <build>
>       <plugins>
>           <plugin>
>               <groupId>myGrupId</groupId>
>               <artifactId>myArtifactId</artifactId>
>               <version>1.0</version>
>               <dependencies>
>                   <dependency>
>                       <groupId>my-dep-1-group</groupId>
>                       <artifactId>my-dep-1-artifactId</artifactId>
>                       <version>my-dep-1-version</version>
>                       <classifier>data</classifier>
>                       <scope>compile</scope>
>                   </dependency>
>               </dependencies>
>               <configuration>
>                   <myParam1>param</myParam1>
>               </configuration>
>               <executions>
>                   <execution>
>                       <id>EXEC1</id>
>                       <phase>generate-sources</phase>
>                       <goals>
>                           <goal>generate-code</goal>
>                       </goals>
>                       <configuration>
>                           <p2>param2<//p2>
>                       </configuration>
>                   </execution>
>                </executions>
>         <plugin>
>     </plugins>
> </build>
>
> Basically it invokes a custom MOJO in the generate-sources phase.  The
> plugin uses information on the classpath (among other things) to determine
> what code to generate.
>
> Child project 2 has the exact same setup "however" it changes the
> dependency defined in the plugin to be dependent on a different project.
>
> When I build each project individually, they build perfectly fine.
>  However, when I build the aggregate project, child project 2 fails because
> it is using the dependencies of the first project.  I have verified this
> with various dumps of the class path, etc.  I have tried inheriting the
> plugin information, separate plugin definitions in the child project, many
> configurations. It always seems that the first time a plugin is loaded that
> is the classpath used for that plugin whenever it is executed.
>
> Is this a bug?  I would have expected the inline dependencies to work just
> like the configuration section of a plugin, basically it is for that
> invocation only.
>
> If this is not a bug, how should I be invoking the same plugin twice, with
> different class paths, within the same build.
>
> Thank
> Mike
>
>
>
>
>
>
>
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