[MacPorts] #18722: pure: add warning on version upgrade if old modules are installed

[MacPorts]

#18722: pure: add warning on version upgrade if old modules are installed
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  Reporter:  ryandesign@…             |       Owner:  ryandesign@…           
      Type:  enhancement              |      Status:  closed                 
  Priority:  Normal                   |   Milestone:  Port Enhancements      
 Component:  ports                    |     Version:  1.7.0                  
Resolution:  fixed                    |    Keywords:                         
      Port:  pure, pure-devel         |  
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Comment(by ryandesign@…):

 This didn't work so well. Running the check at post-install or post-
 activate time just caused a hang. I had to change it to run at post-
 destroot time. Fixed in r47630.

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Ticket URL: <http://trac.macports.org/ticket/18722#comment:2>
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