From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ricardo Wurmus <rekado@elephly.net>
Subject: Re: How can I replace Python venv and pip with Guix?
Date: Tue, 04 Feb 2020 15:02:36 +0100
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To: sirgazil <sirgazil@zoho.com>
Cc: help-guix@gnu.org


sirgazil <sirgazil@zoho.com> writes:

> =E2=80=A2 Once I deactivate this environment (Ctrl+D), how can I activate=
 it again?

It=E2=80=99s a matter of evaluating the etc/profile file that is generated =
for
every Guix profile.  Since you passed

    --root=3D/path/to/my-guix-envs/my-project

to =E2=80=9Cguix environment=E2=80=9D there will be a file

    /path/to/my-guix-envs/my-project/etc/profile

You can set all the environment variables it defines with

    GUIX_PROFILE=3D/path/to/my-guix-envs/my-project
    source $GUIX_PROFILE/etc/profile

If you want a pure environment you can use =E2=80=9Cenv=E2=80=9D.  On our H=
PC cluster I
provide =E2=80=9Cactivate=E2=80=9D scripts like this one:

--8<---------------cut here---------------start------------->8---
#!/bin/bash

profile=3D/path/to/.guix-profile
prompt=3D'\u@\h:\W \[\e[31;47;1m\][pigx]\[\e[m\] $ '

REAL_HOME=3D$HOME
exec /bin/env - PS1=3D"$prompt" \
                HOME=3D$REAL_HOME \
                LANG=3Den_US.UTF-8 \
                GUIX_LOCPATH=3D"$profile/lib/locale" \
                CURL_CA_BUNDLE=3D"/etc/ssl/certs/ca-bundle.crt" \
                /bin/bash --init-file "$profile/etc/profile"
--8<---------------cut here---------------end--------------->8---

It sets a few environment variables, recovers some variables that are
important, and then starts a sub-shell that uses the generated
etc/profile file as its init file.

Something like that might work for you.

--
Ricardo