Error installing MMPM

rohredd

I get an error when installing, I am a newbie, see error below

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Wed Mar 5 22:42:06 2025
david@raspberrypi:~ $ python3 -m pip install --upgrade mmpm
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.

For more information visit http://rptl.io/venv

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.
david@raspberrypi:~ $

sdetweil

@rohredd yes, python has taken to using a virtual env to enable loading different libraries for different apps on the same system

i am not a python programmer, so i dont know how to fix this, maybe google can help
“create python virtual environment”

r0t

I hade the same problem but i could solve it with some good old reading

https://www.raspberrypi.com/documentation/computers/os.html#python-on-raspberry-pi

I used the per-user enviroment

Use the following command to create a virtual environment in a hidden folder in the current user’s home directory:

python -m venv ~/.env

Run the following command from any directory to start using the virtual environment:

source ~/.env/bin/activate

You should then see a prompt similar to the following:
(.env) $:

To leave the virtual environment, run the following command from any directory:

deactivate

When you are inside your virtual environment you can install mmpm an can also use the whole commands like mmpm version ect.

Hope this helps

sdetweil

@r0t yes, AND you need to activate the virtual environment you installed stuff in, before you use it…

like in scripts started by pm2

BiaGen

That error is actually a ‘safety feature’ of the newer Raspberry Pi OS. Since they started protecting the system Python environment, you can’t just use pip install globally anymore. The easiest way around this is to use pipx. Try running these two commands-
sudo apt install pipx
pipx install mmpm

This installs MMPM in its own little ‘bubble’ so it doesn’t mess with the rest of your Pi’s system.