bug#63800: M-x package-install, upgrading, and dealing with :core packages (was: [elpa] elpa-admin 1d766451f8: Suggest `package-install' to install packages (bug#63800))

[Ihor Radchenko <yantar92@posteo.net>]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> AFAIU, one of the problems is that already installed packages do not
>> even show up in the completion and one cannot enter
>> M-x package-install <RET> org <RET>. The last <RET> will only trigger
>> completion window where org is not listed at all.
>>
>> But wasn't this discussed in the past? There was quite a lengthy
>> discussion about this in the past (I did not quite follow it until the
>> end).
>
> Indeed, but I think the discussion did not take a step back to think
> about what the UI should be in a more general sense (IIRC it was
> focused on "what should we do right now for `emacs-29`").

Then, M-x package-install may (1) Remove REQUIRE-MATCH from its
interactive `completing-read' call. (2) If the package is built-in and
:core on ELPA, ask to run package upgrade (y/n) - something like
"Package foo is already installed. New version is available on ELPA. Upgrade? (y/n)"
(3) Fall back to user-error that package is not found otherwise.

-- 
Ihor Radchenko // yantar92,
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