GNU bug report logs - #76568
'package-install' should not install duplicate packages

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From: Ship Mints <shipmints <at> gmail.com>
To: Stefan Kangas <stefankangas <at> gmail.com>
Cc: 76568 <at> debbugs.gnu.org
Subject: bug#76568: 'package-install' should not install duplicate packages
Date: Sun, 16 Mar 2025 14:52:33 -0400

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Stefan, I see Philip and David working on package.el.  It would be fruitful
for them to do that on top of this patch.

On Fri, Mar 7, 2025 at 6:33 AM Ship Mints <shipmints <at> gmail.com> wrote:

> On Wed, Mar 5, 2025 at 4:05 PM Ship Mints <shipmints <at> gmail.com> wrote:
>
>> On Wed, Mar 5, 2025 at 4:02 PM Ship Mints <shipmints <at> gmail.com> wrote:
>>
>>> On Wed, Mar 5, 2025 at 2:55 PM Ship Mints <shipmints <at> gmail.com> wrote:
>>>
>>>> On Wed, Mar 5, 2025 at 12:00 PM Ship Mints <shipmints <at> gmail.com> wrote:
>>>>
>>>>> On Mon, Mar 3, 2025 at 9:34 PM Stefan Kangas <stefankangas <at> gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Ship Mints <shipmints <at> gmail.com> writes:
>>>>>>
>>>>>> > As part of my production upgrade to 30.1, and before I wrote a
>>>>>> program to install my local
>>>>>> > ELPA tree from scratch, I tried to first curate my packages and
>>>>>> change from MELPA to
>>>>>> > generally equivalent GNU ELPA or non-GNU ELPA archives.  The result
>>>>>> was that I had two of
>>>>>> > each package installed.
>>>>>> >
>>>>>> > I think there's a bug in 'package-install' which, when invoked from
>>>>>> > 'package-install-button-action', processes the new package spec,
>>>>>> and incorrectly checks to
>>>>>> > see if the package is already installed.  Interactive invocation of
>>>>>> 'package-install' yields the
>>>>>> > package name from the prompt, not its archive description.
>>>>>> >
>>>>>> > If the below is correct, I can submit a patch to make
>>>>>> 'package-install' behave like
>>>>>> > 'package-reinstall' for the non-interactive case.
>>>>>>
>>>>>> Please submit a patch, but could we also have tests for this please?
>>>>>>
>>>>>> Thanks in advance.
>>>>>>
>>>>>
>>>>> Patch attached.  It prevents the menu-driven case from erasing the
>>>>> already installed message.  It could suggest to the user to remove and then
>>>>> install or we could offer to use package upgrade to the chosen
>>>>> package-desc.  At the very least, the patch prevents duplicates.
>>>>>
>>>>
>>>> Thinking about it a bit more, this patch needs a little more work.  The
>>>> menu-driven package "upgrade" in describe-package-1 workflow will be interrupted by
>>>> this patch.  It does not differentiate install vs. upgrade and calls
>>>> package-install which will now complain the package already exists.  This
>>>> should be changed to run package-upgrade.  I'll take a look.
>>>>
>>>> Any feedback on the minimal patch is still welcome in the meantime.
>>>>
>>>
>>> This patch now accommodates both scenarios.
>>>
>>
>> Now with an amended commit log.
>>
>
> Attached patch with improved package replacement prompt.
>

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