It uses [Graphviz](https://www.graphviz.org/) to render the diagram, so you need to [install Graphviz](https://graphviz.gitlab.io/download/) to use **diagrams**. After installing graphviz (or already have it), install the **diagrams**.
> macOS users can download the Graphviz via `brew install graphviz` if you're using [Homebrew](https://brew.sh).
> macOS users can download the Graphviz via `brew install graphviz` if you're using [Homebrew](https://brew.sh). Similarly, Windows users with [Chocolatey](https://chocolatey.org) installed can run `choco install graphviz`.