X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/9d716f0f7d0901dea1a0dfbadb0356c83b11adc0..4efad0bb95024e2082f73b4ae33613ef8f6ebef3:/docs/develop/Development-Environment.md

diff --git a/docs/develop/Development-Environment.md b/docs/develop/Development-Environment.md
index 05bd50de..c6515d2c 100644
--- a/docs/develop/Development-Environment.md
+++ b/docs/develop/Development-Environment.md
@@ -1,6 +1,6 @@
 # Setting up Nominatim for Development
 
-This chapter gives an overview how to set up Nominatim for developement
+This chapter gives an overview how to set up Nominatim for development
 and how to run tests.
 
 !!! Important
@@ -34,12 +34,14 @@ It has the following additional requirements:
 * [PHP CodeSniffer](https://github.com/squizlabs/PHP_CodeSniffer)
 * [Pylint](https://pylint.org/) (CI always runs the latest version from pip)
 * [mypy](http://mypy-lang.org/) (plus typing information for external libs)
+* [Python Typing Extensions](https://github.com/python/typing_extensions) (for Python < 3.9)
 * [pytest](https://pytest.org)
 
 The documentation is built with mkdocs:
 
 * [mkdocs](https://www.mkdocs.org/) >= 1.1.2
-* [mkdocstrings](https://mkdocstrings.github.io/)
+* [mkdocstrings](https://mkdocstrings.github.io/) >= 0.16
+* [mkdocstrings-python-legacy](https://mkdocstrings.github.io/python-legacy/)
 
 ### Installing prerequisites on Ubuntu/Debian
 
@@ -53,8 +55,8 @@ To install all necessary packages run:
 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