have a pdm shell command

[deronnax]

Is your feature request related to a problem? Please describe.

No

Describe the solution you'd like

A pdm shell command, like Pipenv, Poetry and Hatch have. I have seen pdm venv activate but it isn't really the same (plus it does not seem to work).

[pawamoy]

Workaround in the meantime, if you install dependencies in __pypackages__:

# pyproject.toml
[tool.pdm.scripts]
shell = {shell = "PATH=$(echo $(pdm info | grep __pypackages__)/bin):$PATH zsh"}

% type ruff
ruff not found
% pdm run shell
% type ruff
ruff is /media/data/dev/griffe/__pypackages__/3.11/bin/ruff

[deronnax]

That looks like a good workaround, thank you. I don't use __pypackage__ but we can probably achieve the same thing with pdm venv activate.

[pawamoy]

You're welcome! The following seems to work for venvs:

# pyproject.toml
[tool.pdm.scripts]
shell = {shell = "zsh -c \"eval $(pdm venv activate 3.11); export PATH; export VIRTUAL_ENV; exec zsh\""}

[frostming]

Why not just pdm run $SHELL

[pawamoy]

Oh my. Right. pdm run does that already 👍

[deronnax]

hmmm it's not really handy, plus the venv is not activated (it's just put in the path) and it's significant user experience disconcert since all other tools have the shell command, to which most user are used (it's a corner stone of our workflow at my company e.g)
If you don't feel like doing it, I will give a try.

[frostming]

plus the venv is not activated (it's just put in the path)

activating a venv is basically setting env vars, mainly VIRTUAL_ENV and PATH, plus some corner case handling.

[deronnax]

OK. Are you against a pdm shell command? (If yes I will close the issue)

(but I think in few weeks someone will open another issue asking for a pdm shell command).

[Secrus]

Coming from Poetry, poetry shell was a mistake that I plan to fight with at some point. It's a pain to maintain it. What pdm does with venv activate is a much better solution in my opinion.

[frostming]

Coming from Poetry, poetry shell was a mistake that I plan to fight with at some point. It's a pain to maintain it. What pdm does with venv activate is a much better solution in my opinion.

Same story why I abandoned pdm shell

[Secrus]

I'd suggest that if someone wants it, it's a great plugin candidate.

[frostming]

I'd suggest that if someone wants it, it's a great plugin candidate.

There's already one pdm-shell

[pawamoy]

For reference: https://github.com/abersheeran/pdm-shell

[deronnax]

I ran into it. No install instructions on the readme, last commit in Nov 2022, 1 man project, it would look the same if it was abandoned. It cannot be considered in a enterprise-grade environment.

[frostming]

Okay, it seems the plugin doesn't spawn a new shell either.

However, the conclusion remains the same, we are not going to add this command, as it can be achieved in many ways:

1. pdm run $SHELL
2. Add a shell function in your .bashrc that runs eval $(pdm venv active)

The docs will be updated accordingly

[frostming]

For reference, this is a bash/zsh function that you can copy and paste it into your rc file:

pdm() {                                                                                                                            
    local command=$1

    if [[ "$command" == "shell" ]]; then 
        eval $(pdm venv activate)
    else 
        command pdm $@
    fi
}

After restarting your shell you are able to run pdm shell

[deronnax]

Ah, I did not know it was something willingly removed. I thought it was just never implemented. OK then, I can understand. Thank you for the suggested alternatives.