When you choose Python Interpreter, PyCharm will automatically pick up libraries available on that Python installation.
Make sure PyCharm uses the Python Interpreter that has its libraries installed in env/lib/python3.9 and then you should see available libraries on the interpreter configuration screen.
If you install libraries with pip e.g. env/bin/python -m pip install mylib they will become automatically available to PyCharm, because PyCharm and pip will use the same Python installation to manage these libraries.
I'm using PyCharm and also installing dependencies with pip I dont know how to make PyCharm to get this new dependencies that I install and are in the folder {project_base}/env/lib/python3.9
If I go there I can see the libraries installed, but PyCharm is not able to seen it, and allow me to use it in the code.
I've seen in the preference the Python Interpreter section, but I need to use pip, since I'm documenting the package to install with pip for other users.
Any idea how to point my PyCharm to my env/lib/ folder?
Regards
How does PyCharm find libraries installed with pip