[MacPorts] #57416: Cannot port graphviz-oldgui

[MacPorts]

#57416: Cannot port graphviz-oldgui
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 Reporter:  zhusichen320     |      Owner:  (none)
     Type:  defect           |     Status:  new
 Priority:  High             |  Milestone:
Component:  ports            |    Version:  2.5.4
 Keywords:  graphviz-oldgui  |       Port:  graphviz-oldgui
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 My MacOs's version is 10.13, so I couldn't download and use the latest
 version of Xcode. Instead, I downloaded Xcode 9.2 and the corresponding
 command line tool and macports. Then I successfully ported graphviz. But I
 also want a stable and development versions of Graphviz and the Mac GUI
 Graphviz.app, so I would also like to port graphviz-devel and graphviz-
 oldgui. When I ported oldgui, the ouput says "graphviz-oldgui cannot be
 installed for the configured build_arch 'x86_64' because it only supports
 the arch(s) 'ppc'."
 How to fix that? I really want the Graphviz.app.

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Ticket URL: <https://trac.macports.org/ticket/57416>
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