The following comment has been added to this issue:

     Author: Brett Porter
    Created: Sat, 3 Apr 2004 10:44 PM
       Body:
I'm somewhat surprised this could have ever worked, and a bit confused as to what is 
actually happening. What is the behaviour under RC2? Some improvements to the cache 
happened on CVS since, but I would think it was the plugin loading changes in RC2 that 
changed the behaviour.

plugin installation is not seamless and I would recommend using plugin:install as part 
of a build process. What I think you want is to build the plugin, copy it to the 
repository, the load it via a plugin dependency? Unfortunately this is not what 
plugin:install does at present.
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http://jira.codehaus.org/secure/ViewIssue.jspa?key=MAVEN-1219&page=comments#action_18148

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View the issue:
  http://jira.codehaus.org/secure/ViewIssue.jspa?key=MAVEN-1219

Here is an overview of the issue:
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        Key: MAVEN-1219
    Summary: Goals from plugin dependencies fail if the plugin is installed as part of 
the build process
       Type: Bug

     Status: Unassigned
   Priority: Major

 Original Estimate: Unknown
 Time Spent: Unknown
  Remaining: Unknown

    Project: maven
   Versions:
             1.0-rc3

   Assignee: 
   Reporter: Chad Brandon

    Created: Sat, 3 Apr 2004 10:30 PM
    Updated: Sat, 3 Apr 2004 10:44 PM
Environment: Windows XP, JDK 1.4.2_03

Description:
I have a project consisting of multiple subprojects.  One of these subprojects 
includes a plugin which is built and installed via "plugin:install" during my project 
build.  A goal is then used from this previously installed plugin to build the rest of 
the project's subprojects (in other words other subprojects have a dependency on this 
plugin which is installed during the build process).  

Using maven-rc1 this used to be no problem, but as of yesterday (I checked out and 
built MAVEN-1_0_Branch) using rc3 this fails.  If the plugin doesn't already exist in 
the ${maven.home}/plugins directory things work fine (if I delete the plugin out 
before the build starts), the plugin is installed and other subprojects needing to use 
goal(s) from this plugin find it and the build completes successfully.  But if the 
plugin already exists in ${maven.home}/plugins, I'll get something like below telling 
me it can't parse the project.xml, when it fact that file does exist, or I sometimes 
get a message telling me the plugin.jelly from that plugin can't be found: 

BUILD FAILED
File...... file:/H:/Documents and 
Settings/Administrator/.maven/plugins/maven-multiproject-plugin-1.2/plugin.jelly
Element... maven:reactor
Line...... 202
Column.... 9
Unable to obtain goal [multiproject:install-callback] -- 
file:/I:/java/eclipse/andromda-all/metafacades/uml/maven.xml:17
:42: <attainGoal> Error parsing project.xml 'H:\Documents and 
Settings\Administrator\.maven\plugins\maven-andromda-plugi
n-3.0-SNAPSHOT\project.xml'
Total time: 23 seconds


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