[MacPorts] #59467: ghc @8.6.5_1: Built ghc not working on Catalina

[MacPorts]

#59467: ghc @8.6.5_1: Built ghc not working on Catalina
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  Reporter:  abusse  |      Owner:  essandess
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.6.2
Resolution:          |   Keywords:  catalina
      Port:  ghc     |
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Comment (by cjones051073):

 Replying to [comment:3 essandess]:
 > Another workaround: just install with the {{{+prebuilt}}} variant and
 hope that it runs.

 Last resort. Please try and fix the build itself. If it is just the Xcode
 11 issue again, based on experience with other ports either just
 blacklisting Xcode 11 clang, so macports clang 9.0 is used, or appending
 the compiler option `-fno-stack-check` will do the job.

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Ticket URL: <https://trac.macports.org/ticket/59467#comment:5>
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