(Sorry for not replying to everyone sooner, I seem to have been
unsubscribed from the list -- or maybe the digests are taking >3 days to
arrive.)

On Mon, 13 Jul 2026 22:45:33 +0200
Jan Claeys <[email protected]> wrote:
> On Fri, 2026-07-10 at 13:48 -0400, David Niklas wrote:
> > I wanted to install a python pip wheel file globally without breaking
> > my system packages. I tried searching online, but I cannot figure out
> > how to do that.
> > 
> > How do you install a .whl file globally in debian without breaking
> > system packages?
> 
> Is it something that is also packaged in Debian?

It's the VapourSynth package. And it's not in Debian -- though I could
get it through the multimedia repo.

> Why do you think it will break system packages?
Because I get this big wall of scary text saying so...

########################################
# pip install ./dist/vapoursynth-77-cp313-abi3-linux_x86_64.whl
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/python3.13/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.
########################################

Thanks

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