Poetry is good. We've used it 3 years in production without issue of large amounts of time to solve the dependencies.

    $ poetry init # to init the pyproject.toml file.
    $ poetry add <packages> 
    $ poetry shell # to activate inside the virutalenv.

Lock in the poetry.lock file after any change to your project dependencies, and other people can duplicate the project using after doing a git pull.

    $ poetry install