JSF support in Netbeans 7 includes some changes and introduces some new features, such as improved EL support in editor. etc. One of them being mentioned widely is called "Support for JSF component libraries, including bundled Primefaces library". PrimeFaces 2.1 runtime is bundled as example only available for JSF 2.0 environment . This feature allows 3rd party component library provider to easily create a netbeans module for their component library.

In JSF configuration panel, a Components tab is added with a combo box to select one and only one component suite. This can be done by JSFComponentProvider to provide component jar files.

We could combine core and ACE component as one ICEfaces2 component to be listed in the Component Suite combo box. But we cannot provide compat components as compat component needs further configuration (adding compatResourceServlet in web.xml).

A bugzilla case: "Allow multiple JSF component libraries" is created.
http://netbeans.org/bugzilla/show_bug.cgi?id=194445