GNU bug report logs - #31410
25.3; Python.el: Support for Python virtual environment (venv)

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: seb <at> k-7.ch (Sébastien Gendre)
To: bug-gnu-emacs <at> gnu.org
Subject: 25.3; Python.el: Support for Python virtual environment (venv)
Date: Thu, 10 May 2018 18:58:13 +0200

When reading Python.el source code, I see it's support Python virtual
environment by setting the variable 'python-shell-vertualenv-root'

It would be more discoverable if we have an interactive function to do
that. Somthing like 'python-virtualenv' or similar. The must would be to
have a key binding for it and eplained it in mode help.



Emacs informations:
In GNU Emacs 25.3.1 (x86_64-redhat-linux-gnu, GTK+ Version 3.22.26)
 of 2018-01-12 built on buildhw-08.phx2.fedoraproject.org
Windowing system distributor 'Fedora Project', version 11.0.11906000
Configured using:
 'configure --build=x86_64-redhat-linux-gnu
 --host=x86_64-redhat-linux-gnu --program-prefix=
 --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr
 --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc
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Configured features:
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ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 MODULES XWIDGETS

Important settings:
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  value of $XMODIFIERS: @im=ibus
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Major mode: Org

Minor modes in effect:
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Memory information:
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Message #8 received at 31410 <at> debbugs.gnu.org (full text, mbox):

From: Augusto Stoffel <arstoffel <at> gmail.com>
To: 31410 <at> debbugs.gnu.org
Date: Sat, 28 Aug 2021 12:05:00 +0200

> When reading Python.el source code, I see it's support Python virtual
> environment by setting the variable 'python-shell-vertualenv-root'

> It would be more discoverable if we have an interactive function to do
> that. Somthing like 'python-virtualenv' or similar. The must would be to
> have a key binding for it and eplained it in mode help.

This is just an opinion, but I think the virtualenv support in the
Python shell is a misguided feature.  The problem is that it merely sets
up the shell to run in a given virtualenv; it has no influence on other
external tools such as language servers or, say, ‘M-x compile RET pytest
RET’.

Instead, it would be better to embrace the idea of setting the
‘process-environment’ and ‘exec-path’ variables buffer-locally.  There
are some rough edges to be polished, cf [1].  But at least there are
packages, such as envrc, direnv and buffer-env (on MELPA) to help
managing env vars in Emacs.

[1] https://debbugs.gnu.org/cgi/bugreport.cgi?bug=46345

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