[MacPorts] #31023: Error activating xorg-inputproto when installing koffice: X11/extensions/XI.h already exists

[MacPorts]

#31023: Error activating xorg-inputproto when installing koffice:
X11/extensions/XI.h already exists
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 Reporter:  info@…                   |       Owner:  macports-tickets@…                   
     Type:  defect                   |      Status:  new                                  
 Priority:  Normal                   |   Milestone:                                       
Component:  ports                    |     Version:  2.0.1                                
 Keywords:                           |        Port:  koffice                              
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Comment(by info@…):

 what mean 'using the -f switch'? - it happens on all pathes...

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Ticket URL: <https://trac.macports.org/ticket/31023#comment:2>
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