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From: Mats Wichmann <mats@wichmann.us>
Newsgroups: comp.lang.python
Subject: Re: Help needed - - running into issues with python and its tools
Date: Mon, 5 Aug 2024 07:51:06 -0600
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On 8/5/24 06:48, o1bigtenor via Python-list wrote:
> On Sun, Aug 4, 2024 at 8:49=E2=80=AFAM Mats Wichmann via Python-list <
> python-list@python.org> wrote:
>=20
>> On 8/3/24 20:03, o1bigtenor via Python-list wrote:
>>
>>> My question was, is and will be (and the doc absolutely doesn't cover=
 it)
>>> how do I install a different version in the venv so that python 3.11.=
x on
>>> the
>>> system is not discombobulated by the python 3.12.x in the venv.
>>> That python 3.12 would let me run the tools needed.
>>> (Its the how to install the next version of python that I just haven'=
t
>> been
>>> able to find information on - - - and I would be looking for informat=
ion
>>> on how to install on a *nix.)
>>
>> To get a different Python "in" the venv, you use the version you want =
in
>> the construction of the venv. For example:
>>
>>
>> $ python3.13 -m venv new_venv
>> $ new_venv/bin/python --version
>> Python 3.13.0b4
>> $ source new_venv/bin/activate
>>
>>
>   "https://peps.python.org/pep-0668/ PEP 668, which prevents pip from
> interacting with the OS installed python. This change has been done in =
red
> hat and other distros too . . . "
>=20
> similarly your first command produces and error code for the same reaso=
n.
>=20
> Sorry - - - not my policy - - -

What? Yes, the *system* pip should have some restrictions, if it's a=20
system mainly managed by a package manager.

Setting up a venv is the *expected* approach to such situations, and=20
creating one doesn't cause any problems. You end up with a pip in the=20
activated venv that's going to install to a different path (the one in=20
the venv), and will not be marked as externally managed, as the package=20
manager has no control over that path.

That's the whole point.  What error are you getting?  The venv module is=20
not the pip module so restrictions on the system pip have nothing to do=20
with it.