[MacPorts] #30648: ghc patch failure (was: "shell command failed" during ghc upgrade via "port install outdated")

[MacPorts]

#30648: ghc patch failure
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 Reporter:  schinder@…          |       Owner:  gwright@…           
     Type:  defect              |      Status:  new                 
 Priority:  Normal              |   Milestone:                      
Component:  ports               |     Version:  2.0.1               
 Keywords:                      |        Port:  ghc                 
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Comment(by jmr@…):

 Please generate a complete log; this one starts with the build process
 already partly completed.
 {{{
 sudo port clean ghc
 sudo port upgrade ghc
 }}}

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Ticket URL: <https://trac.macports.org/ticket/30648#comment:2>
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