I think this has come up before and we wanted to avoid doing it for things on
the command line, where it is hard to override. In general that would be true,
but for the archetype plugin being the first experience people have with Maven,
a bit more reliability would probably be useful.
I thought we could apply the patch below in 2.2.2. This would by default lock
it down, but allow the comparatively simple cmd line to get a different version:
$ mvn archetype:generate -Dmaven.archetype.version=2.0-alpha-6-SNAPSHOT
Or the corresponding change permanently in settings.xml:
<profile>
<id>properties</id>
<properties>
<maven.archetype.version>2.0-alpha-6-SNAPSHOT</maven.archetype.version>
</properties>
</profile>
...
<activeProfiles>
<activeProfile>properties</activeProfile>
</activeProfiles>
The downside is that at the moment this works for settings the version
correctly when a pom.xml exists, but not when one doesn't (which I think might
be a bug in 2.2.2 that would also need fixing). I haven't checked trunk but it
might work there already. Perhaps we might only do it for 3.0 if that's the
case (esp. since this has a very minor chance of incompatibility if the
property is in use).
I wouldn't want to do this for every plugin - having magic properties is
something to be wary of - but this one might be worthwhile as a special case?
Thoughts?
- Brett
Index: maven-project/src/main/resources/org/apache/maven/project/pom-4.0.0.xml
===================================================================
--- maven-project/src/main/resources/org/apache/maven/project/pom-4.0.0.xml
(revision 899508)
+++ maven-project/src/main/resources/org/apache/maven/project/pom-4.0.0.xml
(working copy)
@@ -68,9 +68,13 @@
<directory>${project.basedir}/src/test/resources</directory>
</testResource>
</testResources>
- <pluginManagement>
- <plugins>
+ <pluginManagement>
+ <plugins>
<plugin>
+ <artifactId>maven-archetype-plugin</artifactId>
+ <version>${maven.archetype.version}</version>
+ </plugin>
+ <plugin>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.3</version>
</plugin>
@@ -204,6 +208,8 @@
</build>
</profile>
</profiles>
-
+ <properties>
+ <maven.archetype.version>2.0-alpha-4</maven.archetype.version>
+ </properties>
</project>
--
Brett Porter
br...@apache.org
http://brettporter.wordpress.com/
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