[MacPorts] #51957: py27-matplotlib @1.5.2_0+cairo+tkinter fails to upgrade: cairo dependency

[MacPorts]

#51957: py27-matplotlib @1.5.2_0+cairo+tkinter fails to upgrade: cairo dependency
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  Reporter:  p.bro@…        |      Owner:  sean@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.4
Resolution:                 |   Keywords:
      Port:  py-matplotlib  |
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Comment (by ram@…):

 Just got this error on updating to version 1.5.3_0, from 1.5.2_0, on
 Sierra.

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Ticket URL: <https://trac.macports.org/ticket/51957#comment:4>
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