what's the poetry equivalent of pip install 'python-lsp-server[all]'?

Question

In the page about the python lsp server there are examples about how to install it in an env based on pip; like

pip install 'python-lsp-server[all]'

or

pip install 'python-lsp-server[yapf]'

How do I get the same with Poetry?

Answer 1

Use --extras argument:

poetry install python-lsp-server --extras "yapf", "flake8"

As an alternative use -E argument:

poetry install python-lsp-server -E yapf -E flake8

Source