[MacPorts] #56721: Cannot activate avahi 0.7_3+gtk+gtk3+quartz

[MacPorts]

#56721: Cannot activate avahi 0.7_3+gtk+gtk3+quartz
--------------------------+--------------------
  Reporter:  Gord-Butler  |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.5.2
Resolution:               |   Keywords:
      Port:  avahi        |
--------------------------+--------------------

Comment (by jmroot):

 Sorry, the `-d` needs to go between `port` and `upgrade`. Putting it at
 the end attempts to turn off a variant called "d".

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Ticket URL: <https://trac.macports.org/ticket/56721#comment:8>
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