(I intentionally picked this one without the user option since that
will probably become unnecessary with Emacs 30+).  I believe there was
an issue with the name `package--upgradable-built-in-p' and the
docstring?

>> I argue the last option should be safe.  Semantically it would also make
>> sense, since invoking the command can be taken to be take to be an
>> explicit request, and if it is not what a user wants (I assume that João
>> think this is not probable), then it is easy to revert.
>> 
>> If we decide that this is not acceptable, then we can fall back onto the
>> patch that uses a prefix argument or a user option.
>
> Yes, that is what I think we should install on emacs-29.
>
> Thanks.

-- 
Philip Kaludercic