# 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
- This guide assumes that you develop under the latest version of Ubuntu. You
- can of course also use your favourite distribution. You just might have to
- adapt the commands below slightly, in particular the commands for installing
- additional software.
+ This guide assumes that you develop under the latest version of Debain/Ubuntu.
+ You can of course also use your favourite distribution. You just might have
+ to adapt the commands below slightly, in particular the commands for
+ installing additional software.
## Installing Nominatim
The first step is to install Nominatim itself. Please follow the installation
instructions in the [Admin section](../admin/Installation.md). You don't need
-to set up a webserver for development, the webserver that is included with PHP
-is sufficient.
+to set up a webserver for development, the webserver that can be started
+via `nominatim serve` is sufficient.
-If you want to run Nominatim in a VM via Vagrant, use the default `ubuntu` setup.
+If you want to run Nominatim in a VM via Vagrant, use the default `ubuntu24` setup.
Vagrant's libvirt provider runs out-of-the-box under Ubuntu. You also need to
install an NFS daemon to enable directory sharing between host and guest. The
following packages should get you started:
* [behave test framework](https://behave.readthedocs.io) >= 1.2.6
* [phpunit](https://phpunit.de) (9.5 is known to work)
* [PHP CodeSniffer](https://github.com/squizlabs/PHP_CodeSniffer)
-* [Pylint](https://pylint.org/) (2.6.0 is used for the CI)
+* [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)
+* [pytest-asyncio](https://pytest-asyncio.readthedocs.io)
+
+For testing the Python search frontend, you need to install extra dependencies
+depending on your choice of webserver framework:
+
+* [httpx](https://www.python-httpx.org/) (starlette only)
+* [asgi-lifespan](https://github.com/florimondmanca/asgi-lifespan) (starlette only)
The documentation is built with mkdocs:
* [mkdocs](https://www.mkdocs.org/) >= 1.1.2
-* [mkdocstrings](https://mkdocstrings.github.io/)
+* [mkdocstrings](https://mkdocstrings.github.io/) >= 0.25
+* [mkdocs-material](https://squidfunk.github.io/mkdocs-material/)
### Installing prerequisites on Ubuntu/Debian
-Some of the Python packages require the newest version which is not yet
-available with the current distributions. Therefore it is recommended to
-install pip to get the newest versions.
+The Python tools should always be run with the most recent version.
+In particular, pylint tends to have a lot of breaking changes between versions.
+The easiest way, to handle these Python dependencies is to run your
+development from within a virtual environment.
-To install all necessary packages run:
+To set up the virtual environment with all necessary packages run:
```sh
-sudo apt install php-cgi phpunit php-codesniffer \
- python3-pip python3-setuptools python3-dev pylint
-
-pip3 install --user behave mkdocs mkdocstrings pytest
+virtualenv ~/nominatim-dev-venv
+~/nominatim-dev-venv/bin/pip install\
+ psycopg2-binary psutil psycopg[binary] PyICU SQLAlchemy \
+ python-dotenv jinja2 pyYAML datree \
+ behave mkdocs mkdocstrings pytest pytest-asyncio pylint \
+ types-jinja2 types-markupsafe types-psutil types-psycopg2 \
+ types-pygments types-pyyaml types-requests types-ujson \
+ types-urllib3 typing-extensions unicorn falcon
```
-The `mkdocs` executable will be located in `.local/bin`. You may have to add
-this directory to your path, for example by running:
+Now enter the virtual environment whenever you want to develop:
+```sh
+. ~/nominatim-dev-venv/bin/activate
```
-echo 'export PATH=~/.local/bin:$PATH' > ~/.profile
+
+For installing the PHP development tools, run:
+
+```sh
+sudo apt install php-cgi phpunit php-codesniffer
```
If your distribution does not have PHPUnit 7.3+, you can install it (as well
```
The binaries are found in `.config/composer/vendor/bin`. You need to add this
-to your PATH as well:
+to your PATH:
```
echo 'export PATH=~/.config/composer/vendor/bin:$PATH' > ~/.profile
```
+### Running Nominatim during development
+
+The source code for Nominatim can be found in the `src` directory and can
+be run in-place. The source directory features a special script
+`nominatim-cli.py` which does the same as the installed 'nominatim' binary
+but executes against the code in the source tree. For example:
+
+```
+me@machine:~$ cd Nomiantim
+me@machine:~Nomiantim$ ./nominatim-cli.py --version
+Nominatim version 4.4.99-1
+```
+
+Make sure you have activated the virtual environment that holds all
+necessary dependencies.
## Executing Tests
All tests are located in the `/test` directory.
-To run all tests just go to the build directory and run make:
+To run all tests, run make from the source root:
```sh
-cd build
-make test
+make tests
```
+There are also goals for executing parts of the test suite: mypy, lint, pytest, bdd.
+
For more information about the structure of the tests and how to change and
extend the test suite, see the [Testing chapter](Testing.md).