pyenv: poetry itself, running on older python version, what to do?

Question:

Update:

Which Python should I use to install poetry?

  • System Python: That is an excellent idea. Once, however, poetry self update was trying to update a system package without the necessary permissions.
  • Pyenv: A good solution. Nonetheless, if Python is updated and the old installation is deleted, poetry will stop working because it is not aware of the new python version.
  • Set global python with pyenv

pyenv global 3.10.7

  • Install poetry

$ curl -sSL https://install.python-poetry.org | python3 -

  • Change global python

pyenv global 3.10.8

Now, poetry still runs on Python-3.10.7. If I uninstall this python version, poetry crashes.

How can I instruct the virtual environment of poetry to use the new python version?

A solution is to uninstall and reinstall it:

$ curl -sSL https://install.python-poetry.org | python3 - --uninstall
$ curl -sSL https://install.python-poetry.org | python3 -

Is there any other way?

Asked By: raratiru

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Answers:

By default Poetry will use the Python version used during it installation to create a new venv.

Set the (experimental) config option virtualenvs.prefer-active-python to true, if you want Poetry to pick up the current activated Python version.

As an alternative to this option, run poetry env use </path/to/python> once before any other Poetry command, to set the python interpreter that should be used. See https://python-poetry.org/docs/managing-environments/#switching-between-environments

Answered By: finswimmer

The decision is to use Pyenv to install Poetry.

If the older python version should be deleted:

  • Uninstall Poetry.
  • Delete old Python version.
  • Install Poetry.
Answered By: raratiru