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Bug
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Resolution: Unresolved
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Major
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Ubuntu, JDK 6
Given the mercurial plugin with parent org.jenkins-ci.plugins:plugin:1.400, but also reproducible with 1.461, Maven 3 mvn -B release:prepare fails with
[INFO] Checking dependencies and plugins for snapshots ... [INFO] Transforming 'Jenkins Mercurial plugin'... Downloading: <CENTRAL_MIRROR>/org/jenkins-ci/tools/maven-hpi-plugin/1.74/maven-hpi-plugin-1.74.pom [WARNING] The POM for org.jenkins-ci.tools:maven-hpi-plugin:jar:1.74 is missing, no dependency information available Downloading: <CENTRAL_MIRROR>/org/jenkins-ci/tools/maven-hpi-plugin/1.74/maven-hpi-plugin-1.74.jar [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 5.310s [INFO] Finished at: Fri Apr 27 19:30:03 EDT 2012 [INFO] Final Memory: 10M/164M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.2.1:prepare (default-cli) on project mercurial: Execution default-cli of goal org.apache.maven.plugins:maven-release-plugin:2.2.1:prepare failed: Failed to build parent project for org.jenkins-ci.plugins:mercurial:hpi:1.39-SNAPSHOT: Some problems were encountered while processing the POMs: [ERROR] [ERROR] Unresolveable build extension: Plugin org.jenkins-ci.tools:maven-hpi-plugin:1.74 or one of its dependencies could not be resolved: Could not find artifact org.jenkins-ci.tools:maven-hpi-plugin:jar:1.74 in central (<CENTRAL_MIRROR>/) @: 1 problem was encountered while building the effective model for org.jenkins-ci.plugins:plugin:1.461 [ERROR] [ERROR] Unresolveable build extension: Plugin org.jenkins-ci.tools:maven-hpi-plugin:1.74 or one of its dependencies could not be resolved: Could not find artifact org.jenkins-ci.tools:maven-hpi-plugin:jar:1.74 in central (<CENTRAL_MIRROR>/) @
Indeed I think the error message is correct: plugin-1.400.pom (or again plugin-1.461.pom) refers to maven-hpi-plugin yet does not declare any <pluginRepository> in which it might be found. (Nor does its own parent.)
Maven 2 succeeds in this case; apparently it does not care where the plugin came from. But Maven 3 as described in https://cwiki.apache.org/MAVEN/maven-3x-compatibility-notes.html#Maven3.xCompatibilityNotes-ResolutionfromLocalRepository does care.
[JENKINS-13637] Cannot release using M3
Activating the Jenkins repos by default, which would affect any Maven projects, does not seem like a reasonable workaround; passing -Pjenkins during release:prepare would be an unpleasant but unacceptable workaround if that sufficed. A proper fix would be in plugin-*.pom to declare the pluginRepository it needs (or avoid using maven-hpi-plugin if it does not), so that the release plugin works without special configuration.
blalor
added a comment - I agree that modifying settings.xml is an unacceptable solution to the problem, since it requires making an environment-specific fix to the build environment.
blalor
added a comment - I agree that modifying settings.xml is an unacceptable solution to the problem, since it requires making an environment-specific fix to the build environment. 
Graham Leggett
added a comment - Just hit this problem, and was forced to hack into settings.xml to work around it. This creates the situation where in our environment, it is not possible to build a jenkins plugin using a jenkins triggered build.
Graham Leggett
added a comment - Just hit this problem, and was forced to hack into settings.xml to work around it. This creates the situation where in our environment, it is not possible to build a jenkins plugin using a jenkins triggered build.
@jglick, is there a workaround to resolve this issue? Or is the only way to fix it to install M2?KK pointed me in the right direction: the problem was the missing <profiles> section of settings.xml. See https://wiki.jenkins-ci.org/display/JENKINS/Plugin+tutorial#Plugintutorial-SettingUpEnvironment