[MacPorts] #68989: shellcheck @0.9.0_4: cannot install on Apple silicon

[MacPorts]

#68989: shellcheck @0.9.0_4: cannot install on Apple silicon
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  Reporter:  apua                                  |      Owner:  (none)
      Type:  defect                                |     Status:  new
  Priority:  Normal                                |  Milestone:
 Component:  ports                                 |    Version:  2.8.1
Resolution:                                        |   Keywords:
      Port:  shellcheck @0.9.0_4 (devel, haskell)  |
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Comment (by kencu):

 I don’t know why those instructions say “for some ports” you need the CLTs
 because pretty much nothing installs without them.

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Ticket URL: <https://trac.macports.org/ticket/68989#comment:3>
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