[MacPorts] #35285: gimp-help-en won't upgrade - can't find libxml2

[MacPorts]

#35285: gimp-help-en won't upgrade - can't find libxml2
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 Reporter:  david.w.watson@…         |       Owner:  devans@…           
     Type:  defect                   |      Status:  new                
 Priority:  Normal                   |   Milestone:                     
Component:  ports                    |     Version:  2.1.1              
 Keywords:                           |        Port:  gimp-help-en       
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Comment(by macosx12345@…):

 I attached a proposal of patch to the portfile (tested under Mac OS 10.6,
 with Python 2.7 as default), inspired by the portfile of ``gtk-doc''.

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Ticket URL: <https://trac.macports.org/ticket/35285#comment:13>
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