pyenv install 3.10.10 pyenv local 3.10.10 # Activate Python 3.10.10 for the current project

*Note*: If you have trouble installing a specific version of python on your system
it might be worth trying other supported versions.

By default, Poetry will try to use the currently activated Python version to create the virtual environment
for the current project automatically. You can also create and activate a virtual environment manually — in this
case, Poetry should pick it up and use it to install the dependencies. For example:

```bash
python -m venv .venv
source .venv/bin/activate

You can make sure that the environment is picked up by executing

poetry env info

To install dependencies and rasa itself in editable mode execute

make install

Note for macOS users: under macOS Big Sur we've seen some compiler issues for dependencies. Using export SYSTEM_VERSION_COMPAT=1 before the installation helped.

In order to install rasa's optional dependencies, you need to run:

make install-full

In order to resolve it, you must follow these steps to install a Rust compiler:

brew install rustup
rustup-init

After initialising the Rust compiler, you should restart the console and check its installation:

rustc --version

In case the PATH variable had not been automatically setup, run:

export PATH="$HOME/.cargo/bin:$PATH"

First of all, install all the required dependencies:

make install install-docs

After the installation has finished, you can run and view the documentation locally using:

make livedocs

It should open a new tab with the local version of the docs in your browser; if not, visit http://localhost:3000 in your browser. You can now change the docs locally and the web page will automatically reload and apply your changes.

In order to run the tests, make sure that you have the development requirements installed:

make prepare-tests-ubuntu # Only on Ubuntu and Debian based systems
make prepare-tests-macos  # Only on macOS

Then, run the tests:

make test

They can also be run at multiple jobs to save some time:

JOBS=[n] make test

Where [n] is the number of jobs desired. If omitted, [n] will be automatically chosen by pytest.

In order to run the integration tests, make sure that you have the development requirements installed:

make prepare-tests-ubuntu # Only on Ubuntu and Debian based systems
make prepare-tests-macos  # Only on macOS

make run-integration-containers

Finally, you can run the integration tests like this:

```bash
make test-integration

pip install poetry-merge-lock

Just execute this command to resolve merge conflicts in poetry.lock automatically:

poetry-merge-lock

In order to build a Docker image on your local machine execute the following command:

make build-docker

The Docker image is available on your local machine as rasa:localdev.

If you want to automatically format your code on every commit, you can use pre-commit. Just install it via pip install pre-commit and execute pre-commit install in the root folder. This will add a hook to the repository, which reformats files on every commit.

If you want to set it up manually, install black via poetry install. To reformat files execute

make formatter

If you want to check types on the codebase, install mypy using poetry install. To check the types execute

make types