[MacPorts] #40169: Error: Unable to open port: invalid command name "port::run_callbacks"

[MacPorts]

#40169: Error: Unable to open port: invalid command name "port::run_callbacks"
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  Reporter:  guivho@…  |      Owner:  macports-tickets@…
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  base      |    Version:  2.2.0
Resolution:            |   Keywords:
      Port:            |
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Comment (by cal@…):

 I think this might happen when the `PortSystem 1.0` is missing in the
 Portfile, or when the installed version of port1.0 doesn't match the
 version of macports1.0.

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Ticket URL: <https://trac.macports.org/ticket/40169#comment:2>
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