[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
-------------------------------------+--------------------------------------
 Reporter:  ryandesign@…             |       Owner:  ryandesign@…           
     Type:  enhancement              |      Status:  new                    
 Priority:  Normal                   |   Milestone:  Port Enhancements      
Component:  ports                    |     Version:  1.7.0                  
 Keywords:                           |        Port:  pure, pure-devel       
-------------------------------------+--------------------------------------
 Pure has the feature that modules are installed into the directory
 ${prefix}/lib/pure-${branch} so if Pure is updated to a newer version then
 any existing modules you've installed aren't accessible anymore until you
 forcibly rebuild each module so that it gets installed into the new pure
 lib directory. This is [http://groups.google.com/group/pure-
 lang/browse_thread/thread/6a4df00286ee72a/24614d56f536a076?lnk=gst&q=readlink#24614d56f536a076
 intentional] because Pure has not yet reached stability and is still
 changing often, such that a module compiled for a previous version of Pure
 probably won't work with a current version anyway.

 It would be nice if pure (and pure-devel) would output a message if they
 are upgraded to a newer version and the user has installed modules so that
 they know they need to rebuild them.

-- 
Ticket URL: <http://trac.macports.org/ticket/18722>
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