Does this Maven plugin really have an invalid descriptor?

Question

COMMAND:

mvn org.apache.maven.plugins:maven-archetype-plugin:2.0-alpha-4:generate -DarchetypeGroupId=org.beardedgeeks -DarchetypeArtifactId
=gae-eclipse-maven-archetype  -DarchetypeVersion=1.1.2 -DarchetypeRepository=http://beardedgeeks.googlecode.com/svn/repository/release
s

OUTPUT:

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Internal error in the plugin manager getting plugin 'org.apache.maven.plugins:maven-archetype-plugin': Plugin 'org.apache.maven
.plugins:maven-archetype-plugin:2.0-alpha-4' has an invalid descriptor:
1) Plugin's descriptor contains the wrong group ID: net.kindleit
2) Plugin's descriptor contains the wrong artifact ID: maven-gae-plugin
3) Plugin's descriptor contains the wrong version: 0.5.9
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Wed Jun 09 20:48:35 CEST 2010
[INFO] Final Memory: 3M/15M
[INFO] ------------------------------------------------------------------------

I have a hard time believing this Maven plugin has an invalid descriptor since other people seem to be using it with no problem. Am I doing something wrong?

Answer 1

Can't reproduce your problem, the following command works fine for me (copied & pasted from GAE + Eclipse + Maven Archetype):

mvn org.apache.maven.plugins:maven-archetype-plugin:2.0-alpha-4:generate \
  -DarchetypeGroupId=org.beardedgeeks \
  -DarchetypeArtifactId=gae-eclipse-maven-archetype \
  -DarchetypeVersion=1.1.2 \
  -DarchetypeRepository=http://beardedgeeks.googlecode.com/svn/repository/releases

Tested with Maven 2.2.1:

$ mvn -version
Apache Maven 2.2.1 (r801777; 2009-08-06 21:16:01+0200)
Java version: 1.6.0_20
Java home: /usr/lib/jvm/java-6-sun-1.6.0.20/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux" version: "2.6.32-22-generic" arch: "i386" Family: "unix"

Answer 2

I often experience problems with crappy metadata in my local repository. This kind of error usually vanishes after I do

rm -Rf my/home/dir/.m2/repository/net/kendleit/maven-gae-plugin

but actually the reason why it works with Pascal is that Pascal uses this url http://beardedgeeks.googlecode.com/svn/repository/releases whereas you use this url http://beardedgeeks.googlecode.com/svn/repository/release (an s is missing, hence there's a 404)

do the rm as mentioned above and then run again with the correct url

---

EDIT: sorry there is actually a trailing s I didn't see. I take everything back, but still: try to delete the metadata in your local repo