[MacPorts] #21540: Show dependencies on install prior to installing them

[MacPorts]

#21540: Show dependencies on install prior to installing them
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 Reporter:  imgroxx@…             |       Owner:  macports-tickets@…                   
     Type:  enhancement           |      Status:  new                                  
 Priority:  Normal                |   Milestone:                                       
Component:  ports                 |     Version:  1.8.0                                
 Keywords:  dependencies install  |        Port:                                       
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 It strikes me as odd that, though the dependencies are apparently known
 immediately after "Computing dependencies for <port>", they are shown only
 individually as they are installed or in a large list if an install fails.

 I'd request that a list be shown once dependencies are calculated,
 defaulting to what needs to be installed, and with the option to show all
 dependencies, so the user can cancel / pre-empt / have some rudimentary
 progress notification without interrupting the process.  Though non-
 progress-related uses are limited, they can certainly exist.

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Ticket URL: <http://trac.macports.org/ticket/21540>
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