Plugin development

How do I develop a plugin that isn't in the nutch source tree?  I want
to keep all my project's source code together, and not put the
project specific plugin in with the nutch code.  Do I just have my
plugin's build.xml include $NUTCH_HOME/src/home/build-plugin.xml?
(I'm a little shakey on ant syntax, I'm used to make.)  Other than
that, and making sure my plugin's jar file ends up in nutch's
CLASSPATH, is there anything special I need to know?

Should I be asking this on the developer list?

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