[MacPorts] #29708: macports does not properly change PATH environment on installation

[MacPorts]

#29708: macports does not properly change PATH environment on installation
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 Reporter:  sorin.sbarnea@…          |       Owner:  macports-tickets@…                   
     Type:  defect                   |      Status:  new                                  
 Priority:  Normal                   |   Milestone:                                       
Component:  base                     |     Version:  1.9.2                                
 Keywords:                           |        Port:                                       
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Comment(by sorin.sbarnea@…):

 Yesterday I found the first application that was failing to detect `hg`
 because the tool was not found in path (PyCharm).

 I studied the issue because previously I have similar issues on OS X, and
 I discovered that the only way to modify the path for the entire system
 and all applications is `/etc/launchd.conf` which by the way is empty by
 default.

 The idea is thay GUI application that will want to use a macport installed
 command will fail if we do not update the PATH for gui applications.

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Ticket URL: <https://trac.macports.org/ticket/29708#comment:2>
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