[MacPorts] #57234: Some ports are failing at staging due to new build system in Xcode 10

[MacPorts]

#57234: Some ports are failing at staging due to new build system in Xcode 10
-------------------------+-------------------------------------------------
 Reporter:  mf2k         |      Owner:  (none)
     Type:  defect       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:  xcode10      |       Port:  cotvnc macports-notifier pinentry-
                         |  mac terminal-notifier xhyve
-------------------------+-------------------------------------------------
 Xcode 9 introduced a new build system but it was not the default. Xcode 10
 has made it the default.

 This is an example of a failure message usually seen.
 {{{
 :info:build Details:  Failed to create workspace arena at
 <DVTFilePath:0x7f9ad0459500:'/Users/macports/Library/Developer/Xcode/DerivedData
 /pinentry-mac-asqmjqvkuvyzkeaduqaryxjqemdk'>: Error
 Domain=NSCocoaErrorDomain Code=513 "You don’t have permission to save the
 file “pinentry-mac-asqmjqvkuvyzkeaduqaryxjqemdk” in the folder
 “DerivedData”."
 UserInfo={NSFilePath=/Users/macports/Library/Developer/Xcode/DerivedData
 /pinentry-mac-asqmjqvkuvyzkeaduqaryxjqemdk,
 NSUnderlyingError=0x7f9ad02c4190 {Error Domain=NSPOSIXErrorDomain Code=1
 "Operation not permitted"}}
 75      :info:build Object:   <IDEWorkspaceArena: 0x7f9ad01ea080>
 76      :info:build Method:   -createWorkspaceArenaFolderIfNecessary
 77      :info:build Thread:   <NSThread: 0x7f9acb617690>{number = 1, name
 = main}
 78      :info:build Please file a bug at https://bugreport.apple.com with
 this warning message and any useful information you can provide.
 }}}

 This ticket will track ports that are affected by it. It is a work in
 progress so feel free to add/remove ports and improve my description of
 it.

-- 
Ticket URL: <https://trac.macports.org/ticket/57234>
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