Forcing python39 on M1

[Dave Allured - NOAA Affiliate]

*Sigh*.  The ports.macports.org site has not been getting updates since Feb
20.  See recent threads.  Yes, this is *usually* reliable.  Not this month.


On Sat, Mar 13, 2021 at 8:23 AM Ken Cunningham <
ken.cunningham.webuse at gmail.com> wrote:

> > Having heard that python39 is the only one (so far) to compile natively
> on M1, I’m trying to force the python ports I use to python39
>
> Hello Peter,
>
> FYI, an arm64 version of python38 appears to be available:
>
> http://packages.macports.org/python38/python38-3.8.8_0.darwin_20.arm64.tbz2
>
> and is “green” on the ports review page:
>
> https://ports.macports.org/port/python38/summary
>
>
> The ports.macports.org page can be misleading at times, unfortunately, as
> it will show “green” if the port has been blocked from building even if it
> can’t be built, which is no doubt confusing to people at times and there is
> (I believe) a ticket about that somewhere.
>
> The packages.macports.org site is pretty reliable, although to be 100%
> certain, you do need to actually install the port and examine it with
> “file” or “arch” or similar.
>
> And the fact that the arm64 python38 exists doesn’t necessarily mean a
> universal python38 exists for x86_64/arm64 or can be built. It might or
> might not.
>
> So there are some caveats to the presence of the python38 file there on
> packages, but it is there.
>
> Best,
>
> Ken
>
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