[MacPorts] #59043: meld @3.18.1: any port command results in error " Error: Unable to open port: unknown option setup_args"

[MacPorts]

#59043: meld @3.18.1: any port command results in error " Error: Unable to open
port: unknown option setup_args"
---------------------+--------------------
  Reporter:  wilya7  |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  meld    |
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Comment (by kencu):

 That's interesting.  What if you just:
 {{{
 cd /
 sudo port -v install meld
 }}}
 and see what happens? I just installed it from source and it works fine
 here.

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Ticket URL: <https://trac.macports.org/ticket/59043#comment:2>
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