find rust-analyzer automatically and display error when not found

lazy-lock.json

@@ -32,7 +32,7 @@
   "nvim-treesitter-textobjects": { "branch": "master", "commit": "71385f191ec06ffc60e80e6b0c9a9d5daed4824c" },
   "nvim-web-devicons": { "branch": "master", "commit": "6e51ca170563330e063720449c21f43e27ca0bc1" },
   "plenary.nvim": { "branch": "master", "commit": "b9fd5226c2f76c951fc8ed5923d85e4de065e509" },
-  "rustaceanvim": { "branch": "master", "commit": "047f9c9d8cd2861745eb9de6c1570ee0875aa795" },
+  "rustaceanvim": { "branch": "master", "commit": "12504405821c05874d2d1f6b5ec919f9808e2c99" },
   "telescope-ui-select.nvim": { "branch": "master", "commit": "6e51d7da30bd139a6950adf2a47fda6df9fa06d2" },
   "telescope.nvim": { "branch": "master", "commit": "a0bbec21143c7bc5f8bb02e0005fa0b982edc026" },
   "trouble.nvim": { "branch": "main", "commit": "f176232e7759c4f8abd923c21e3e5a5c76cd6837" },

lua/plugins/lsp.lua

@@ -167,12 +167,19 @@ return {
 	},
 	{
 		'mrcjkb/rustaceanvim',
-		version = "^4",
+		version = "^6",
 		lazy = false,
 		ft = { "rust" },
 		config = function()
+			local rust_analyzer_path = vim.fn.trim(vim.fn.system("rustup which rust-analyzer"))
+			if rust_analyzer_path == "" then
+				vim.notify("rust-analyzer not found! Install it with: rustup component add rust-analyzer",
+					vim.log.levels.ERROR)
+				return
+			end
 			vim.g.rustaceanvim = {
 				server = {
+					cmd = { rust_analyzer_path },
 					on_attach = lsp_attach,
 					settings = {
 						-- rust-analyzer language server configuration
@@ -185,11 +192,7 @@ return {
 								runBuildScripts = true,
 							},
 							-- Add clippy lints for Rust.
-							checkOnSave = {
-								allFeatures = true,
-								command = "clippy",
-								extraArgs = { "--no-deps" },
-							},
+							checkOnSave = true,
 							-- TODO this breaks diagnostics, look into what can be done
 							-- procMacro = {
 							-- 	enable = true,