# Updating rust-analyzer options Because there a large number of rust-analyzer options it's difficult to handle them by hand. The options can be fetched from the [rust-analyzer package.json](https://github.com/rust-lang/rust-analyzer/blob/master/editors/code/package.json). There is a derivation on the top-level flake that allows to build it easily, you just have to run: ```bash nix build .#rustAnalyzerOptions ``` You can then copy the `result/share/rust-analyzer-config.nix` to the correct location.