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Subject: bug#57786: 28.1; run-python fails when using tramp-sshfs
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1. Open a remote Python file with /sshfs:hostname:/path/to/file.py
2. Hit C-c C-p (run-python) to start a Python REPL
3. Observe a failure with the message:
tramp-send-string: Process *tramp/sshfs earth* not running



In GNU Emacs 28.1 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0, Xaw scroll bars)
Windowing system distributor 'The X.Org Foundation', version 11.0.12013000
System Description: NixOS 21.11 (Porcupine)

Configured using:
 'configure
 --prefix=/nix/store/mdi1yi5y3nnm2bwm34qv41nxgpnvqb2s-emacs-28.1
 --disable-build-details --with-modules --with-x-toolkit=lucid
 --with-xft --with-cairo'

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON
LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY INOTIFY
PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS X11 XDBE
XIM XPM LUCID ZLIB

Important settings:
  value of $EMACSLOADPATH: 
  value of $EMACSNATIVELOADPATH: /nix/store/lxhvfz483p69srg7xnqai2ycni628v8a-emacs-packages-deps/share/emacs/native-lisp::
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: sbaugh@HIDDEN
Subject: bug#57786: Acknowledgement (28.1; run-python fails when using
 tramp-sshfs)
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Date: Tue, 13 Sep 2022 22:56:02 +0000

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Subject: bug#57786: 28.1; run-python fails when using tramp-sshfs
Resent-From: Michael Albinus <michael.albinus@HIDDEN>
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From: Michael Albinus <michael.albinus@HIDDEN>
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Date: Wed, 14 Sep 2022 09:29:35 +0200
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sbaugh@HIDDEN writes:

Hi,

> 1. Open a remote Python file with /sshfs:hostname:/path/to/file.py
> 2. Hit C-c C-p (run-python) to start a Python REPL
> 3. Observe a failure with the message:
> tramp-send-string: Process *tramp/sshfs earth* not running

I can reproduce it with Emacs 28.1, 28.2 and 29.0.50.

However, it seems that this isn't supported by python.el. It uses
internal Tramp functions from tramp-sh.el, so it is unlikely it will run
over an sshfs connection.

Perhaps an error message from python.el is needed, saying "Remote
connection `sshfs' isn't supported for processes". or alike.

Best regards, Michael.

Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#57786: 28.1; run-python fails when using tramp-sshfs
Resent-From: Spencer Baugh <sbaugh@HIDDEN>
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From: Spencer Baugh <sbaugh@HIDDEN>
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Date: Wed, 14 Sep 2022 11:25:01 +0000 (UTC)
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Michael Albinus <michael.albinus@HIDDEN> writes:
> sbaugh@HIDDEN writes:
>> 1. Open a remote Python file with /sshfs:hostname:/path/to/file.py
>> 2. Hit C-c C-p (run-python) to start a Python REPL
>> 3. Observe a failure with the message:
>> tramp-send-string: Process *tramp/sshfs earth* not running
>
> I can reproduce it with Emacs 28.1, 28.2 and 29.0.50.
>
> However, it seems that this isn't supported by python.el. It uses
> internal Tramp functions from tramp-sh.el, so it is unlikely it will run
> over an sshfs connection.
>
> Perhaps an error message from python.el is needed, saying "Remote
> connection `sshfs' isn't supported for processes". or alike.

Seems like a bug in python.el then; the sshfs TRAMP method has better
performance than the ssh method, so it would be nice to be able to use
it when editing Python files...

Last modified: Wed, 14 Sep 2022 11:30:02 UTC

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