pykickstart has changed and now expects parse methods to return a value.
On Wednesday, January 14 2009, Chris Lumens said:
> In order to support representing %include in pykickstart, all the parser
> methods had to start returning the data object that was being modified.
> Since anaconda subclasses most of the command objects to override the parse
> methods, we also need to start returning a data object reference as well.
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