[MacPorts] #57158: py27-setuptools can't read "build.cmd"

[MacPorts]

#57158: py27-setuptools can't read "build.cmd"
--------------------+--------------------
 Reporter:  Tatsh   |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.5.3
 Keywords:          |       Port:
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 I am getting this error with many Python ports. This is with Xcode 10 and
 macOS 10.14 (which I have been running since the first beta).

 {{{
 --->  Building py27-setuptools
 Error: Failed to build py27-setuptools: can't read "build.cmd": wrong #
 args: should be "set varName ?newValue?"
 }}}

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Ticket URL: <https://trac.macports.org/ticket/57158>
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