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Because there is overhead (and, in some cases, external dependencies) associated with Plugins that may only be useful to some deployments, Registry also ships with Non-Core Plugins. As of v1.1.0, they can be found in the app/AvailablePlugin directory. These are not enabled by default. The simplest way to enable a Non-Core Plugin (assuming you have met any external dependencies the Plugin may require) is to symlink it from your local/Plugin directory.

After creating the symlink, you should update your database schema to reflect the newly available plugin.

$ cd $REGISTRY/local/Plugin
$ ln -s ../../app/AvailablePlugin/SomePlugin .
$ cd $REGISTRY/app
$ su -c "./Console/cake database" ${APACHE_USER}

External Plugins

Plugins that come from other sources (including those you write yourself) should be placed in the local/Plugin directory.