Announcing Poetry 1.2.0b1

The Poetry team is pleased to announce the immediate availability of Poetry 1.2.0b1.

If you have a previous version of Poetry installed via the official installer, getting Poetry 1.2.0b1 is as easy as:

$ poetry self update --preview

For a complete list of changes, you can refer to the change log.

Drop python 3.6 support #

Python 3.6 has reached its end of life. So we dropped support for running Poetry with Python 3.6.

However, handling projects that require Python <=3.6 is still possible.

Detect current activated Python #

With the new installer script install-poetry.py it was no longer possible to select the Python version used for creating virtual environments by switching the currently activated Python with tools like pyenv.

Poetry now provides a new experimental option virtualenvs.prefer-active-python. Once set to true, Poetry tries to detect the currently activated Python executable when creating a new environment. This should work regardless of the chosen installation method of Poetry.

Deleting multiple environments at once #

If a project had multiple associated virtual environments, it was not possible to delete more than one at a time.

poetry env remove now accepts a list of python executables to remove multiple environments.

Removing all known environments is now possible by applying the new --all parameter.

Configure the number of parallel processes #

poetry install executes operations in parallel. The default number of parallel processes is number_of_cores + 4. It is now possible to limit the number of parallel processes by using the option installer.max-workers.