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Subject: [bug#75817] [PATCH] profiles: emacs-subdirs: Avoid building list with a loop
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From: Thiago Jung Bauermann <bauermann@HIDDEN>
Date: Fri, 24 Jan 2025 20:01:35 -0300
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If the EMACSNATIVELOADPATH environment variable (by mistake) has duplicated
paths, Emacs fails to load with:
$ emacs
List contains a loop:
("/home/user/.guix-profile/lib/emacs/native-site-lisp"
"/gnu/store/…-emacs-lsp-mode-9.0.0/lib/emacs/native-site-lisp"
"/home/user/.guix-profile/lib/emacs/native-site-lisp"
"/home/user/.guix-profile/lib/emacs/native-site-lisp"
"/gnu/store/…-emacs-lsp-mode-9.0.0/lib/emacs/native-site-lisp" . #2)
$ echo $?
255
A git bisect in Guix to find when the problem was introduced arrived at
commit e9b13294700d ("profiles: emacs-subdirs: Also expand
native-comp-eln-load-path.").
Fix the problem by applying Liliana's suggestion of changing 'nconc' to
'append' in the Elisp code written to subdirs.el.
* guix/profiles.scm (emacs-subdirs): Use 'append' rather than 'nconc'.
Change-Id: If646b806f24666b5247850d30d2819c7482c130b
Fixes: <https://issues.guix.gnu.org/75709>
Suggested-by: Liliana Marie Prikler <liliana.prikler@HIDDEN>
---
guix/profiles.scm | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/guix/profiles.scm b/guix/profiles.scm
index 87b9543ac01f..63b2a08a48d4 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -1230,8 +1230,8 @@ (define build
(setq native-comp-eln-load-path
(mapcan (lambda (dir)
(if (equal dir needle)
- (nconc ',native-comp-dirs
- (list dir))
+ (append ',native-comp-dirs
+ (list dir))
(list dir)))
native-comp-eln-load-path))))
port)
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Thiago Jung Bauermann <bauermann@HIDDEN> Subject: bug#75817: Acknowledgement ([PATCH] profiles: emacs-subdirs: Avoid building list with a loop) Message-ID: <handler.75817.B.17377597812124.ack <at> debbugs.gnu.org> References: <20250124230226.107387-1-bauermann@HIDDEN> X-Gnu-PR-Message: ack 75817 X-Gnu-PR-Package: guix-patches X-Gnu-PR-Keywords: patch Reply-To: 75817 <at> debbugs.gnu.org Date: Fri, 24 Jan 2025 23:04:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): guix-patches@HIDDEN If you wish to submit further information on this problem, please send it to 75817 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 75817: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D75817 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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Subject: [bug#75817] [PATCH] profiles: emacs-subdirs: Avoid building list with a loop
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Subject: [bug#75817] [PATCH] profiles: emacs-subdirs: Avoid building list with a loop
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Liliana Marie Prikler <liliana.prikler@HIDDEN> writes:
> Am Freitag, dem 24.01.2025 um 20:01 -0300 schrieb Thiago Jung
> Bauermann:
>> If the EMACSNATIVELOADPATH environment variable (by mistake) has
>> duplicated paths, Emacs fails to load with:
>>
>> =C2=A0 $ emacs
>> =C2=A0 List contains a loop:
>> =C2=A0 ("/home/user/.guix-profile/lib/emacs/native-site-lisp"
>> =C2=A0=C2=A0 "/gnu/store/=E2=80=A6-emacs-lsp-mode-9.0.0/lib/emacs/native=
-site-lisp"
>> =C2=A0=C2=A0 "/home/user/.guix-profile/lib/emacs/native-site-lisp"
>> =C2=A0=C2=A0 "/home/user/.guix-profile/lib/emacs/native-site-lisp"
>> =C2=A0=C2=A0 "/gnu/store/=E2=80=A6-emacs-lsp-mode-9.0.0/lib/emacs/native=
-site-lisp" .
>> #2)
>> =C2=A0 $ echo $?
>> =C2=A0 255
>>
>> A git bisect in Guix to find when the problem was introduced arrived
>> at commit e9b13294700d ("profiles: emacs-subdirs: Also expand
>> native-comp-eln-load-path.").
>>
>> Fix the problem by applying Liliana's suggestion of changing 'nconc'
>> to 'append' in the Elisp code written to subdirs.el.
> It's better to describe the bug in code so that folks won't stumble
> over it again. E.g. "Note: needle may be found multiple times, so
> don't use destructive procedures like nconc."
Good point. I added your suggested note as a comment in the Elisp code.
>> * guix/profiles.scm (emacs-subdirs): Use 'append' rather than
>> 'nconc'.
>>
>> Change-Id: If646b806f24666b5247850d30d2819c7482c130b
>> Fixes: <https://issues.guix.gnu.org/75709>
> You have some horizontal space here to name the bug :)
Indeed. I added a short description.
Thank you for your quick review!
--
Thiago
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Subject: [bug#75817] [PATCH v2] profiles: emacs-subdirs: Avoid building list with a loop
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If the EMACSNATIVELOADPATH environment variable (by mistake) has duplicated
paths, Emacs fails to load with:
$ emacs
List contains a loop:
("/home/user/.guix-profile/lib/emacs/native-site-lisp"
"/gnu/store/…-emacs-lsp-mode-9.0.0/lib/emacs/native-site-lisp"
"/home/user/.guix-profile/lib/emacs/native-site-lisp"
"/home/user/.guix-profile/lib/emacs/native-site-lisp"
"/gnu/store/…-emacs-lsp-mode-9.0.0/lib/emacs/native-site-lisp" . #2)
$ echo $?
255
A git bisect in Guix to find when the problem was introduced arrived at
commit e9b13294700d ("profiles: emacs-subdirs: Also expand
native-comp-eln-load-path.").
Fix the problem by applying Liliana's suggestion of changing 'nconc' to
'append' in the Elisp code written to subdirs.el.
* guix/profiles.scm (emacs-subdirs): Use 'append' rather than 'nconc'.
Change-Id: If646b806f24666b5247850d30d2819c7482c130b
Fixes: Emacs "List contains a loop" error <https://issues.guix.gnu.org/75709>
Suggested-by: Liliana Marie Prikler <liliana.prikler@HIDDEN>
---
guix/profiles.scm | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
Changes since v1:
Made the following changes suggested by Liliana:
- Added comment to Elisp comment warning about destructive procedures
- Added short bug description to "Fixes" tag.
diff --git a/guix/profiles.scm b/guix/profiles.scm
index 87b9543ac01f..fb4dbc5bd079 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -1230,8 +1230,12 @@ (define build
(setq native-comp-eln-load-path
(mapcan (lambda (dir)
(if (equal dir needle)
- (nconc ',native-comp-dirs
- (list dir))
+ ;; Note: needle may be found
+ ;; multiple times, so don't use
+ ;; destructive procedures like
+ ;; nconc.
+ (append ',native-comp-dirs
+ (list dir))
(list dir)))
native-comp-eln-load-path))))
port)
X-Loop: help-debbugs@HIDDEN
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From: Liliana Marie Prikler <liliana.prikler@HIDDEN>
Date: Sat, 25 Jan 2025 15:26:07 +0100
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Am Samstag, dem 25.01.2025 um 01:14 -0300 schrieb Thiago Jung
Bauermann:
> If the EMACSNATIVELOADPATH environment variable (by mistake) has
> duplicated
> paths, Emacs fails to load with:
>=20
> =C2=A0 $ emacs
> =C2=A0 List contains a loop:
> =C2=A0 ("/home/user/.guix-profile/lib/emacs/native-site-lisp"
> =C2=A0=C2=A0 "/gnu/store/=E2=80=A6-emacs-lsp-mode-9.0.0/lib/emacs/native-=
site-lisp"
> =C2=A0=C2=A0 "/home/user/.guix-profile/lib/emacs/native-site-lisp"
> =C2=A0=C2=A0 "/home/user/.guix-profile/lib/emacs/native-site-lisp"
> =C2=A0=C2=A0 "/gnu/store/=E2=80=A6-emacs-lsp-mode-9.0.0/lib/emacs/native-=
site-lisp" .
> #2)
> =C2=A0 $ echo $?
> =C2=A0 255
>=20
> A git bisect in Guix to find when the problem was introduced arrived
> at commit e9b13294700d ("profiles: emacs-subdirs: Also expand
> native-comp-eln-load-path.").
>=20
> Fix the problem by applying Liliana's suggestion of changing 'nconc'
> to 'append' in the Elisp code written to subdirs.el.
>=20
> * guix/profiles.scm (emacs-subdirs): Use 'append' rather than
> 'nconc'.
>=20
> Change-Id: If646b806f24666b5247850d30d2819c7482c130b
> Fixes: Emacs "List contains a loop" error
> <https://issues.guix.gnu.org/75709>
> Suggested-by: Liliana Marie Prikler <liliana.prikler@HIDDEN>
> ---
Reworded commit message slightly and pushed to emacs-team. Let's wait
a little for all Emacsen to rebuild on CI before merging this into
master :)
Thanks
X-Loop: help-debbugs@HIDDEN
Subject: [bug#75817] [PATCH v2] profiles: emacs-subdirs: Avoid building list with a loop
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From: Thiago Jung Bauermann <bauermann@HIDDEN>
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(Liliana Marie Prikler's message of "Sat, 25 Jan 2025 15:26:07 +0100")
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Liliana Marie Prikler <liliana.prikler@HIDDEN> writes:
> Am Samstag, dem 25.01.2025 um 01:14 -0300 schrieb Thiago Jung
> Bauermann:
>> If the EMACSNATIVELOADPATH environment variable (by mistake) has
>> duplicated
>> paths, Emacs fails to load with:
>>
>> =C2=A0 $ emacs
>> =C2=A0 List contains a loop:
>> =C2=A0 ("/home/user/.guix-profile/lib/emacs/native-site-lisp"
>> =C2=A0=C2=A0 "/gnu/store/=E2=80=A6-emacs-lsp-mode-9.0.0/lib/emacs/native=
-site-lisp"
>> =C2=A0=C2=A0 "/home/user/.guix-profile/lib/emacs/native-site-lisp"
>> =C2=A0=C2=A0 "/home/user/.guix-profile/lib/emacs/native-site-lisp"
>> =C2=A0=C2=A0 "/gnu/store/=E2=80=A6-emacs-lsp-mode-9.0.0/lib/emacs/native=
-site-lisp" .
>> #2)
>> =C2=A0 $ echo $?
>> =C2=A0 255
>>
>> A git bisect in Guix to find when the problem was introduced arrived
>> at commit e9b13294700d ("profiles: emacs-subdirs: Also expand
>> native-comp-eln-load-path.").
>>
>> Fix the problem by applying Liliana's suggestion of changing 'nconc'
>> to 'append' in the Elisp code written to subdirs.el.
>>
>> * guix/profiles.scm (emacs-subdirs): Use 'append' rather than
>> 'nconc'.
>>
>> Change-Id: If646b806f24666b5247850d30d2819c7482c130b
>> Fixes: Emacs "List contains a loop" error
>> <https://issues.guix.gnu.org/75709>
>> Suggested-by: Liliana Marie Prikler <liliana.prikler@HIDDEN>
>> ---
> Reworded commit message slightly and pushed to emacs-team. Let's wait
> a little for all Emacsen to rebuild on CI before merging this into
> master :)
>
> Thanks
Thank you!
--
Thiago
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Subject: [bug#75817] [PATCH v2] profiles: emacs-subdirs: Avoid building list with a loop
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Hello,
Liliana Marie Prikler <liliana.prikler@HIDDEN> skribis:
> Am Samstag, dem 25.01.2025 um 01:14 -0300 schrieb Thiago Jung
> Bauermann:
>> If the EMACSNATIVELOADPATH environment variable (by mistake) has
>> duplicated
>> paths, Emacs fails to load with:
>>=20
>> =C2=A0 $ emacs
>> =C2=A0 List contains a loop:
>> =C2=A0 ("/home/user/.guix-profile/lib/emacs/native-site-lisp"
>> =C2=A0=C2=A0 "/gnu/store/=E2=80=A6-emacs-lsp-mode-9.0.0/lib/emacs/native=
-site-lisp"
>> =C2=A0=C2=A0 "/home/user/.guix-profile/lib/emacs/native-site-lisp"
>> =C2=A0=C2=A0 "/home/user/.guix-profile/lib/emacs/native-site-lisp"
>> =C2=A0=C2=A0 "/gnu/store/=E2=80=A6-emacs-lsp-mode-9.0.0/lib/emacs/native=
-site-lisp" .
>> #2)
>> =C2=A0 $ echo $?
>> =C2=A0 255
>>=20
>> A git bisect in Guix to find when the problem was introduced arrived
>> at commit e9b13294700d ("profiles: emacs-subdirs: Also expand
>> native-comp-eln-load-path.").
>>=20
>> Fix the problem by applying Liliana's suggestion of changing 'nconc'
>> to 'append' in the Elisp code written to subdirs.el.
>>=20
>> * guix/profiles.scm (emacs-subdirs): Use 'append' rather than
>> 'nconc'.
>>=20
>> Change-Id: If646b806f24666b5247850d30d2819c7482c130b
>> Fixes: Emacs "List contains a loop" error
>> <https://issues.guix.gnu.org/75709>
>> Suggested-by: Liliana Marie Prikler <liliana.prikler@HIDDEN>
>> ---
> Reworded commit message slightly and pushed to emacs-team. Let's wait
> a little for all Emacsen to rebuild on CI before merging this into
> master :)
Looking forward to applying this fix (exwm wouldn=E2=80=99t start this morn=
ing).
:-)
Ludo=E2=80=99.
GNU bug tracking system
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1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.