* [Jinja2](https://palletsprojects.com/p/jinja/)
* [PyICU](https://pypi.org/project/PyICU/)
* [PyYaml](https://pyyaml.org/) (5.1+)
- * [datrie](https://github.com/pytries/datrie)
These will be installed automatically when using pip installation.
virtualenv ~/nominatim-dev-venv
~/nominatim-dev-venv/bin/pip install\
psutil psycopg[binary] PyICU SQLAlchemy \
- python-dotenv jinja2 pyYAML datrie behave \
+ python-dotenv jinja2 pyYAML behave \
mkdocs mkdocstrings mkdocs-gen-files pytest pytest-asyncio flake8 \
types-jinja2 types-markupsafe types-psutil types-psycopg2 \
types-pygments types-pyyaml types-requests types-ujson \