Migration doc suggestion - chsh

[Kevin Horton]

> On Nov 28, 2020, at 6:40 AM, Joshua Root <jmr at macports.org> wrote:
> 
> Ryan Schmidt wrote:
>> On Nov 27, 2020, at 15:50, Kevin Horton wrote:
>> 
>>> I'm apparently a slow learner, but once again I forgot to change my login shell back to one supplied by Apple before migrating to Big Sur (I had been using.
>>> 
>>> Suggestion - add a step to the Migration docs, before the step that removes all ports.  If the user is using a default shell provided by Macports, do a 'chsh -s /bin/bash' (or other Apple supplied shell) before removing all ports.
>> 
>> The wiki can be edited by anyone.
> 
> I would go further and recommend never setting your login shell to
> anything but the shells shipped with the OS. If you set it to a
> MacPorts-provided shell, all it takes is one bug (or even ABI change) in
> the shell port or one of its dependencies to seriously break your system
> when you try to upgrade.
> 
> You can configure Terminal to use a different shell without changing
> your actual login shell, and that, along with having /opt/local/bin
> early in your path, is usually all you need.

Thanks for the excellent advice.

Kevin