pipenv install --help

Usage: pipenv install [OPTIONS] [PACKAGES]...

  Installs provided packages and adds them to Pipfile, or (if no packages are
  given), installs all packages from Pipfile.

Options:
  --system                        System pip management.  [env var:
                                  PIPENV_SYSTEM]
  --deploy                        Abort if the Pipfile.lock is out-of-date, or
                                  Python version is wrong.
  --site-packages / --no-site-packages
                                  Enable site-packages for the virtualenv.
                                  [env var: PIPENV_SITE_PACKAGES]
  --skip-lock                     Skip locking mechanisms and use the Pipfile
                                  instead during operation.  [env var:
                                  PIPENV_SKIP_LOCK]
  -e, --editable TEXT             An editable Python package URL or path,
                                  often to a VCS repository.
  --ignore-pipfile                Ignore Pipfile when installing, using the
                                  Pipfile.lock.  [env var:
                                  PIPENV_IGNORE_PIPFILE]
  --selective-upgrade             Update specified packages.
  -r, --requirements TEXT         Import a requirements.txt file.
  -i, --index TEXT                Specify target package index by url or index
                                  name from Pipfile.
  --sequential                    Install dependencies one-at-a-time, instead
                                  of concurrently.  [env var:
                                  PIPENV_SEQUENTIAL]
  -d, --dev                       Install both develop and default packages
                                  [env var: PIPENV_DEV]
  --keep-outdated                 Keep out-dated dependencies from being
                                  updated in Pipfile.lock.  [env var:
                                  PIPENV_KEEP_OUTDATED]
  --pre                           Allow pre-releases.
  --python TEXT                   Specify which version of Python virtualenv
                                  should use.
  --three                         Use Python 3 when creating virtualenv.
  --clear                         Clears caches (pipenv, pip).  [env var:
                                  PIPENV_CLEAR]
  -q, --quiet                     Quiet mode.
  -v, --verbose                   Verbose mode.
  --pypi-mirror TEXT              Specify a PyPI mirror.
  -h, --help                      Show this message and exit.

pipenv [ install | shell | lock | --help ], Pipfile