One issue I’ve been encountering is that Poetry isn’t aware of pyenv or `.python-version`. So what I do to initially build my venv is:

    pyenv exec pip install poetry && pyenv exec poetry install

This creates the venv against the correct Python version, and I can now do without `pyenv exec` for this repository.

And every time that `.python-version` changes (which I at most do a few times per year per project,) I throw away the `.venv`, do `pyenv install -s` and start over.

Your `poetry run` point still stands, though.