[MacPorts] #59407: libgcc8 not installable and upgrade blocker for macOS 10.15 Catalina

[MacPorts]

#59407: libgcc8 not installable and upgrade blocker for macOS 10.15 Catalina
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  Reporter:  razvand  |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.6.1
Resolution:           |   Keywords:  libgcc8, macOS Catalina
      Port:  libgcc8  |
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Comment (by kencu):

 Hello, kind Sir,

 So far, `gcc9` and `libgcc9` are the only ones that work on Catalina.

 Do you know what port you're trying to install is calling for gcc8?
 Perhaps that can be fixed. You can find that by running `port rdeps XYZ`
 where `XYZ` of course is the port you're trying to install. It's possible
 there is a `gcc8` reference in there somewhere we need to fix.

 Now, if you already had `gcc8` / `libgcc8` installed in some previous
 version of MacPorts, then you upgraded to Catalina, and it won't update,
 that's a different problem. In that case you need to follow the
 https://trac.macports.org/wiki/Migration instructions.

-- 
Ticket URL: <https://trac.macports.org/ticket/59407#comment:1>
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