On 10-02-2025 06:01, Marc Shapiro via Dng wrote:
> I have been writing the occasional python program since before venvs
> were a thing, or, at least before I had ever heard of them. I have a
> program that I wrote years ago that uses yfinance.  This does not seem
> to be available in Devuan, so I installed it from PyPI. Every now and
> then the program stops working and that usually means that Yahoo made
> changes and I need to get the most recent version of yfinance.  Now,
> it is saying that yfinance can not be installed because the
> environment is externally managed:
>
> -----------------------------------------------------------------------------------------------
>
>
> error: externally-managed-environment
>
> × This environment is externally managed
> ╰─> To install Python packages system-wide, try apt install
>     python3-xyz, where xyz is the package you are trying to
>     install.
>
>     If you wish to install a non-Debian-packaged Python package,
>     create a virtual environment using python3 -m venv path/to/venv.
>     Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
>     sure you have python3-full installed.
>
>     If you wish to install a non-Debian packaged Python application,
>     it may be easiest to use pipx install xyz, which will manage a
>     virtual environment for you. Make sure you have pipx installed.
>
>     See /usr/share/doc/python3.12/README.venv for more information.
>
> note: If you believe this is a mistake, please contact your Python
> installation or OS distribution provider. You can override this, at
> the risk of breaking your Python installation or OS, by passing
> --break-system-packages.
> hint: See PEP 668 for the detailed specification.
>
> -----------------------------------------------------------------------------------------------
>
>
> Is there any way to get pip to install to a system that does not use
> virtual environments, or any other way to install a module from PyPI
> to s non-venv environment?
>
> Marc

Yes as the error messages states, you can by passing to pip
--break-system-packages.