[izpack-users] Ensure that install dir is clean from previous install

[François Guillet]

Hi,

We use IzPack to provide an installer for each sofware release. After  
installation, user may install plugins available for the software.  
When another version of the software is released, users are likely to  
use the previous install dir as target. This is not a problem except  
for plugins which may be incompatible with new versions and break  
software. How can we ensure that the installation directory is clean  
and that any file not belonging to the installed file set is deleted?  
I thought setting fileset attribute override="true" would do the  
trick but apparently it's not the case (that would have been a simple  
option, though).

I suppose that this is a common situation. Does anyone have the  
answer to this problem?

Thanks.

François



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