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Subject: bug#79742: `package-dir-info` in `master` looks up package descriptors recursively, which breaks existing tools
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The original commit that caused this:

    b81f937e60b Do a deep-copy when installing a package from a local
package

The second hunk touches `package-dir-info`. As I understand from Spencer
Baugh's comments, it's actually not needed to address the initial problem,
but instead it actually causes regression in real world.

This has long been discussed on Emacs-devel, starting here:
https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html

Some particularly relevant emails:
* https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html
(contains a test case)
* https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00657.html
* https://lists.gnu.org/archive/html/emacs-devel/2025-09/msg00122.html

It has been suggested to me that creating a bug might help to get a fix
committed sooner.

Paul

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<div dir=3D"ltr"><div>The original commit that caused this:</div><div><br><=
/div><div>=C2=A0 =C2=A0=C2=A0b81f937e60b Do a deep-copy when installing a p=
ackage from a local package</div><div><br></div><div>The second hunk touche=
s `package-dir-info`. As I understand from Spencer Baugh&#39;s comments, it=
&#39;s actually not needed to address the initial problem, but instead it a=
ctually causes regression in real world.</div><div><br></div><div>This has =
long been discussed on Emacs-devel, starting here:=C2=A0<a href=3D"https://=
lists.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html">https://lists=
.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html</a></div><div><br><=
/div><div>Some particularly relevant emails:</div><div><div>*=C2=A0<a href=
=3D"https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html">h=
ttps://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html</a> (co=
ntains a test case)</div><div></div>* <a href=3D"https://lists.gnu.org/arch=
ive/html/emacs-devel/2025-08/msg00657.html">https://lists.gnu.org/archive/h=
tml/emacs-devel/2025-08/msg00657.html</a></div><div>* <a href=3D"https://li=
sts.gnu.org/archive/html/emacs-devel/2025-09/msg00122.html">https://lists.g=
nu.org/archive/html/emacs-devel/2025-09/msg00122.html</a></div><div><br></d=
iv><div>It has been suggested to me that creating a bug might help to get a=
 fix committed sooner.</div><div><br></div><div>Paul</div></div>

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Paul Pogonyshev <pogonyshev@HIDDEN>
Subject: bug#79742: Acknowledgement (`package-dir-info` in `master` looks
 up package descriptors recursively, which breaks existing tools)
Message-ID: <handler.79742.B.17619402495392.ack <at> debbugs.gnu.org>
References: <CAG7BpaoF6XAzPbw1p9XHExMKBnHHC5noJf4GOvBQguAZqxTsCQ@HIDDEN>
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79742: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D79742
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Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#79742: `package-dir-info` in `master` looks up package descriptors recursively, which breaks existing tools
Resent-From: Eli Zaretskii <eliz@HIDDEN>
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To: Paul Pogonyshev <pogonyshev@HIDDEN>, Philip Kaludercic <philipk@HIDDEN>
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 (message from Paul Pogonyshev on Fri, 31 Oct 2025 20:50:11 +0100)
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> From: Paul Pogonyshev <pogonyshev@HIDDEN>
> Date: Fri, 31 Oct 2025 20:50:11 +0100
> 
> The original commit that caused this:
> 
>     b81f937e60b Do a deep-copy when installing a package from a local package
> 
> The second hunk touches `package-dir-info`. As I understand from Spencer Baugh's comments, it's actually
> not needed to address the initial problem, but instead it actually causes regression in real world.
> 
> This has long been discussed on Emacs-devel, starting here:
> https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html
> 
> Some particularly relevant emails:
> * https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html (contains a test case)
> * https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00657.html
> * https://lists.gnu.org/archive/html/emacs-devel/2025-09/msg00122.html
> 
> It has been suggested to me that creating a bug might help to get a fix committed sooner.

Thanks.

Philip, how can we make further progress in this matter?

Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#79742: `package-dir-info` in `master` looks up package descriptors recursively, which breaks existing tools
Resent-From: Philip Kaludercic <philipk@HIDDEN>
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--=-=-=
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Eli Zaretskii <eliz@HIDDEN> writes:

>> From: Paul Pogonyshev <pogonyshev@HIDDEN>
>> Date: Fri, 31 Oct 2025 20:50:11 +0100
>> 
>> The original commit that caused this:
>> 
>>     b81f937e60b Do a deep-copy when installing a package from a local package
>> 
>> The second hunk touches `package-dir-info`. As I understand from Spencer Baugh's comments, it's actually
>> not needed to address the initial problem, but instead it actually causes regression in real world.
>> 
>> This has long been discussed on Emacs-devel, starting here:
>> https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html
>> 
>> Some particularly relevant emails:
>> * https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html (contains a test case)
>> * https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00657.html
>> * https://lists.gnu.org/archive/html/emacs-devel/2025-09/msg00122.html
>> 
>> It has been suggested to me that creating a bug might help to get a fix committed sooner.
>
> Thanks.

1+

> Philip, how can we make further progress in this matter?

We already have a patch that should fix the issue, we just have to
confirm that it doesn't break anything:


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=0001-Only-search-for-package-descriptors-in-package-root.patch

From 3ddc6780b6b98654678d91b85578b356431e668b Mon Sep 17 00:00:00 2001
From: Philip Kaludercic <philipk@HIDDEN>
Date: Sun, 9 Nov 2025 18:32:18 +0100
Subject: [PATCH] Only search for package descriptors in package root

See the following thread for a background on this change:
https://mail.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html.

* lisp/emacs-lisp/package.el (package-dir-info): Do not
recursively try to find all Lisp files that might have package
metadata.
---
 doc/emacs/custom.texi      | 73 +++++++++++++++++++-------------------
 lisp/emacs-lisp/package.el |  2 +-
 lisp/startup.el            |  5 ++-
 3 files changed, 40 insertions(+), 40 deletions(-)

diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index 63124706e28..f32bd2dbb69 100644
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -1279,7 +1279,7 @@ package-dir-info
       (catch 'found
         (let ((files (or (and (derived-mode-p 'dired-mode)
                               (dired-get-marked-files))
-                         (directory-files-recursively default-directory "\\.el\\'"))))
+                         (directory-files default-directory t "\\.el\\'"))))
           ;; We sort the file names in lexicographical order, to ensure
           ;; that we check shorter file names first (ie. those further
           ;; up in the directory structure).
diff --git a/lisp/startup.el b/lisp/startup.el
index 08a3b65aa0d..acdb5e4d2ff 100644
--- a/lisp/startup.el
+++ b/lisp/startup.el
-- 
2.47.3


--=-=-=--

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has caused the debbugs.gnu.org bug report #79742,
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The original commit that caused this:

    b81f937e60b Do a deep-copy when installing a package from a local
package

The second hunk touches `package-dir-info`. As I understand from Spencer
Baugh's comments, it's actually not needed to address the initial problem,
but instead it actually causes regression in real world.

This has long been discussed on Emacs-devel, starting here:
https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html

Some particularly relevant emails:
* https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html
(contains a test case)
* https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00657.html
* https://lists.gnu.org/archive/html/emacs-devel/2025-09/msg00122.html

It has been suggested to me that creating a bug might help to get a fix
committed sooner.

Paul

--0000000000001cd7a7064279add3
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<div dir=3D"ltr"><div>The original commit that caused this:</div><div><br><=
/div><div>=C2=A0 =C2=A0=C2=A0b81f937e60b Do a deep-copy when installing a p=
ackage from a local package</div><div><br></div><div>The second hunk touche=
s `package-dir-info`. As I understand from Spencer Baugh&#39;s comments, it=
&#39;s actually not needed to address the initial problem, but instead it a=
ctually causes regression in real world.</div><div><br></div><div>This has =
long been discussed on Emacs-devel, starting here:=C2=A0<a href=3D"https://=
lists.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html">https://lists=
.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html</a></div><div><br><=
/div><div>Some particularly relevant emails:</div><div><div>*=C2=A0<a href=
=3D"https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html">h=
ttps://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html</a> (co=
ntains a test case)</div><div></div>* <a href=3D"https://lists.gnu.org/arch=
ive/html/emacs-devel/2025-08/msg00657.html">https://lists.gnu.org/archive/h=
tml/emacs-devel/2025-08/msg00657.html</a></div><div>* <a href=3D"https://li=
sts.gnu.org/archive/html/emacs-devel/2025-09/msg00122.html">https://lists.g=
nu.org/archive/html/emacs-devel/2025-09/msg00122.html</a></div><div><br></d=
iv><div>It has been suggested to me that creating a bug might help to get a=
 fix committed sooner.</div><div><br></div><div>Paul</div></div>

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To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#79742: `package-dir-info` in `master` looks up package
 descriptors recursively, which breaks existing tools
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Philip Kaludercic <philipk@HIDDEN> writes:

> Eli Zaretskii <eliz@HIDDEN> writes:
>
>>> From: Paul Pogonyshev <pogonyshev@HIDDEN>
>>> Date: Fri, 31 Oct 2025 20:50:11 +0100
>>> 
>>> The original commit that caused this:
>>> 
>>>     b81f937e60b Do a deep-copy when installing a package from a
>>> local package
>>> 
>>> The second hunk touches `package-dir-info`. As I understand from
>>> Spencer Baugh's comments, it's actually
>>> not needed to address the initial problem, but instead it actually
>>> causes regression in real world.
>>> 
>>> This has long been discussed on Emacs-devel, starting here:
>>> https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html
>>> 
>>> Some particularly relevant emails:
>>> *
>>> https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html
>>> (contains a test case)
>>> * https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00657.html
>>> * https://lists.gnu.org/archive/html/emacs-devel/2025-09/msg00122.html
>>> 
>>> It has been suggested to me that creating a bug might help to get a
>>> fix committed sooner.
>>
>> Thanks.
>
> 1+
>
>> Philip, how can we make further progress in this matter?
>
> We already have a patch that should fix the issue, we just have to
> confirm that it doesn't break anything:

I have experimented with the patch and it should be safe.  It also led
me to recognise that there was a problem with installing files from a
Dired buffer, which I have resolved in a separate change.

Closing the bug report.  Thank you Paul for reporting the issue!


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To: Paul Pogonyshev <pogonyshev@HIDDEN>
Subject: bug#79742: closed (Re: bug#79742: `package-dir-info` in `master`
 looks up package descriptors recursively, which breaks existing tools)
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Your bug report

#79742: `package-dir-info` in `master` looks up package descriptors recursi=
vely, which breaks existing tools

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 79742 <at> debbugs.gnu.org.

--=20
79742: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D79742
GNU Bug Tracking System
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Philip Kaludercic <philipk@HIDDEN> writes:

> Eli Zaretskii <eliz@HIDDEN> writes:
>
>>> From: Paul Pogonyshev <pogonyshev@HIDDEN>
>>> Date: Fri, 31 Oct 2025 20:50:11 +0100
>>> 
>>> The original commit that caused this:
>>> 
>>>     b81f937e60b Do a deep-copy when installing a package from a
>>> local package
>>> 
>>> The second hunk touches `package-dir-info`. As I understand from
>>> Spencer Baugh's comments, it's actually
>>> not needed to address the initial problem, but instead it actually
>>> causes regression in real world.
>>> 
>>> This has long been discussed on Emacs-devel, starting here:
>>> https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html
>>> 
>>> Some particularly relevant emails:
>>> *
>>> https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html
>>> (contains a test case)
>>> * https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00657.html
>>> * https://lists.gnu.org/archive/html/emacs-devel/2025-09/msg00122.html
>>> 
>>> It has been suggested to me that creating a bug might help to get a
>>> fix committed sooner.
>>
>> Thanks.
>
> 1+
>
>> Philip, how can we make further progress in this matter?
>
> We already have a patch that should fix the issue, we just have to
> confirm that it doesn't break anything:

I have experimented with the patch and it should be safe.  It also led
me to recognise that there was a problem with installing files from a
Dired buffer, which I have resolved in a separate change.

Closing the bug report.  Thank you Paul for reporting the issue!


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The original commit that caused this:

    b81f937e60b Do a deep-copy when installing a package from a local
package

The second hunk touches `package-dir-info`. As I understand from Spencer
Baugh's comments, it's actually not needed to address the initial problem,
but instead it actually causes regression in real world.

This has long been discussed on Emacs-devel, starting here:
https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html

Some particularly relevant emails:
* https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html
(contains a test case)
* https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00657.html
* https://lists.gnu.org/archive/html/emacs-devel/2025-09/msg00122.html

It has been suggested to me that creating a bug might help to get a fix
committed sooner.

Paul

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<div dir=3D"ltr"><div>The original commit that caused this:</div><div><br><=
/div><div>=C2=A0 =C2=A0=C2=A0b81f937e60b Do a deep-copy when installing a p=
ackage from a local package</div><div><br></div><div>The second hunk touche=
s `package-dir-info`. As I understand from Spencer Baugh&#39;s comments, it=
&#39;s actually not needed to address the initial problem, but instead it a=
ctually causes regression in real world.</div><div><br></div><div>This has =
long been discussed on Emacs-devel, starting here:=C2=A0<a href=3D"https://=
lists.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html">https://lists=
.gnu.org/archive/html/emacs-devel/2025-08/msg00332.html</a></div><div><br><=
/div><div>Some particularly relevant emails:</div><div><div>*=C2=A0<a href=
=3D"https://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html">h=
ttps://lists.gnu.org/archive/html/emacs-devel/2025-08/msg00656.html</a> (co=
ntains a test case)</div><div></div>* <a href=3D"https://lists.gnu.org/arch=
ive/html/emacs-devel/2025-08/msg00657.html">https://lists.gnu.org/archive/h=
tml/emacs-devel/2025-08/msg00657.html</a></div><div>* <a href=3D"https://li=
sts.gnu.org/archive/html/emacs-devel/2025-09/msg00122.html">https://lists.g=
nu.org/archive/html/emacs-devel/2025-09/msg00122.html</a></div><div><br></d=
iv><div>It has been suggested to me that creating a bug might help to get a=
 fix committed sooner.</div><div><br></div><div>Paul</div></div>

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------------=_1764102765-20894-1--

Last modified: Tue, 25 Nov 2025 20:45:01 UTC

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