fix(lsp): checkOnSave = false not respected if clippy is installed (#230)

Author: mrcjkb

CHANGELOG.md

@@ -6,6 +6,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+
+- LSP: `checkOnSave = false` not respected when clippy is installed
+  (introduced with clippy auto-detection in version `4.6.0`).
+
 ## [4.7.0] - 2024-02-11
 
 ### Added

lua/rustaceanvim/config/server.lua

@@ -31,7 +31,7 @@ function server.load_rust_analyzer_settings(project_root, opts)
   local default_settings = config.server.default_settings
   local use_clippy = config.tools.enable_clippy and vim.fn.executable('cargo-clippy') == 1
   ---@diagnostic disable-next-line: undefined-field
-  if not default_settings['rust-analyzer'].checkOnSave and use_clippy then
+  if default_settings['rust-analyzer'].checkOnSave == nil and use_clippy then
     ---@diagnostic disable-next-line: inject-field
     default_settings['rust-analyzer'].checkOnSave = {
       allFeatures = true,