Moving from python2 to python3

[Ken Brown]

On 12/30/2020 9:10 AM, ASSI wrote:
> Marco Atzeri via Cygwin-apps writes:
>> it seems the appveyor is not running the postinstall scripts
> 
> It does run all the other ones, though… so there's something amiss with
> the logic that triggers that script.

python38-3.8.3-1 is missing its postinstall script.  All I see is a 
cygport-generated /etc/postinstall/python38.sh, packaged with idle38-3.8.3-1.

Ken