sudo apt install php-cgi phpunit php-codesniffer \
python3-pip python3-setuptools python3-dev
-pip3 install --user behave mkdocs mkdocstrings pytest \
- pylint mypy types-PyYAML types-jinja2 types-psycopg2
+pip3 install --user behave mkdocs mkdocstrings pytest pylint \
+ mypy types-PyYAML types-jinja2 types-psycopg2 types-psutil
```
The `mkdocs` executable will be located in `.local/bin`. You may have to add