Dynamic import / include?

Is it possible using XSLT 1 to dynamically import / include another
stylesheet based on the value of a node in the XML?

I have a node (which only appears once per XML doc) within my XML which
contains the filename name of a stylesheet to include - I'd like the XSL
to include or import this using xsl:import or xsl:include.

Is there an easy way of doing this at all?

Dan