[MacPorts] #24930: Update PATH environment variable from the installer

[MacPorts]

#24930: Update PATH environment variable from the installer
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 Reporter:  sorin.sbarnea@…          |       Owner:  macports-tickets@…                   
     Type:  defect                   |      Status:  new                                  
 Priority:  Normal                   |   Milestone:  MacPorts 1.9.0                       
Component:  ports                    |     Version:  1.8.2                                
 Keywords:  installer                |        Port:                                       
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 The macports installer should update the PATH variable by itself, without
 requiring users to  configure it. Configuring path variable by the average
 user is a complex task and removing this manual stop is an important step
 in promoting macports.

 On OS X the proper way to modify PATH environment variable for all users,
 including root is to change /etc/paths file and add the new paths to it.
 The file contains the paths (each on separate line).

 I tested this and it work at least with OS X 10.6

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Ticket URL: <http://trac.macports.org/ticket/24930>
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