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From Anthony Dahanne <>
Subject Fwd: maven dependency plugin and maven 3
Date Sun, 03 Jun 2012 15:42:10 GMT
Hello  all,
sorry to bump ... :-(
but I'm still having issues understanding what's wrong with the maven
dependency plugin and maven 3...
I attached a pom to demonstrate the problem :
Using maven 3,
1) do a mvn package
2) then do a mvn
-Dverbose=true   -DresolutionFuzziness=version -U

You will see the following output :
[INFO] --- maven-dependency-plugin:2.4:purge-local-repository
(default-cli) @ pof ---
[WARNING] Missing POM for javax.servlet:servlet-api:jar:2.5
[INFO] Skipping: pof. It cannot be resolved.
[INFO] Nothing to do for project: net.dahanne:pof:jar:1.0.0-SNAPSHOT

But I can tell you javax.servlet:servlet-api:jar:2.5 has a pom, and is
already installed in the local maven repository.

Could you guys share some light on this ? I think the maven dependency
plugin is not working fine with maven 3 , as opposed to what the
documentation says :


---------- Forwarded message ----------
From: Anthony Dahanne <>
Date: Thu, May 31, 2012 at 5:50 PM
Subject: maven dependency plugin and maven 3

Hello all,
I'm only using maven 3 on my machine (be it command line or m2e).
I tried to use the maven dependency plugin on a project,

mvn org.apache.maven.plugins:maven-dependency-plugin:2.4:purge-local-repository
-Dverbose=true   -DresolutionFuzziness=version

and it printed such warnings :

[WARNING] Missing POM for javax.servlet:servlet-api:jar:2.5
[WARNING] Missing POM for org.easymock:easymock:jar:3.0
[WARNING] Missing POM for junit:junit:jar:4.8.2

before telling me that the build was successful.
Thing is, it did not purge anything from my repo; because of those
warnings actually; launching the same command with -X, I could see :
[DEBUG] Verifying availability of
from []
[WARNING] Missing POM for javax.servlet:servlet-api:jar:2.5: Error
resolving project artifact: Could not find artifact
javax.servlet:servlet-api:pom:2.5 for project
[DEBUG]   javax.servlet:servlet-api:jar:2.5:provided (selected for provided)

and... I can tell you
exists and contains :

Debugging the code a little, I could notice that this goal was using
from maven-artifact-manager 2.0.9 to find the dependencies.

I am wondering if this plugin failed purging my dependencies because
it used a maven 2 library to scan the dependencies, and my local repo
has only been built and used by mvn3 (and the repo metadata/layout
could be different to what this plugin was expecting) ..
Any thoughts ?
thanks a lot in advance

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