Maven debug output

Imagine you are frustrated by one of the maven plugin and you want to turn the debug output on. Google debugging a maven plugin or maven debug output and you may still be out of luck. Here is the brute force way of doing it.
Open MAVEN_HOME/core/plexus-container-default-1.0-alpha-9.jar and edit org/codehaus/plexus/plexus-bootstrap.xml to set threshold to debug.

<component>
<role>org.codehaus.plexus.logging.LoggerManager</role>
<implementation>org.codehaus.plexus.logging.console.ConsoleLoggerManager</implementation>
<lifecycle-handler>basic</LIFECYCLE-HANDLER>
<configuration>
<threshold>debug</threshold>
</configuration>
</component>