# The Polkadot Parachain Host Implementers' Guide The implementers' guide is compiled from several source files with [`mdBook`](https://github.com/rust-lang/mdBook). To view it live, locally, from the repo root: Ensure graphviz is installed: ```sh brew install graphviz # for macOS sudo apt-get install graphviz # for Ubuntu/Debian ``` Then install and build the book: ```sh cargo install mdbook mdbook-linkcheck mdbook-graphviz mdbook serve roadmap/implementers-guide open http://localhost:3000 ```