[MacPorts] #16574: Portfiles need to be able to declare a dependency on a base version

[MacPorts]

#16574: Portfiles need to be able to declare a dependency on a base version
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 Reporter:  macosforge.org at beej.org  |       Owner:  macports-tickets at lists.macosforge.org
     Type:  defect                   |      Status:  new                                  
 Priority:  Normal                   |   Milestone:  MacPorts base enhancements           
Component:  base                     |     Version:  1.6.0                                
 Keywords:                           |        Port:                                       
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 from [comment:ticket:11935:1]

 "We do want Portfiles to be able to declare a dependency on a base
 version, but that's not possible at the moment."

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Ticket URL: <http://trac.macports.org/ticket/16574>
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