big changes

lua/custom/plugins/lsp-config.lua

@@ -154,10 +154,41 @@ return { -- LSP Configuration & Plugins
     --  - capabilities (table): Override fields in capabilities. Can be used to disable certain LSP features.
     --  - settings (table): Override the default settings passed when initializing the server.
     --        For example, to see the options for `lua_ls`, you could go to: https://luals.github.io/wiki/settings/
+    local lspconfig = require 'lspconfig'
+    local root_patterns = { 'CMakeLists.txt', '.git' }
     local servers = {
-      clangd = {},
+      clangd = {
+        -- tell clangd where to find compile_commands.json
+        cmd = {
+          'clangd',
+          '--background-index',
+          '--clang-tidy',
+          '--compile-commands-dir=build', -- <-- point at the build folder
+        },
+        root_dir = lspconfig.util.root_pattern(unpack(root_patterns)),
+        -- clangd auto-detects filetypes c/cpp/etc.
+      },
+      arduino_language_server = {
+        -- point at the binary (Mason puts it on your PATH)
+        cmd = {
+          'arduino-language-server',
+          '-cli',
+          'arduino-cli',
+          '-cli-config',
+          os.getenv 'HOME' .. '/.arduino15/arduino-cli.yaml',
+          '-fqbn',
+          'arduino:avr:uno', -- <- replace with your board’s FQBN
+          '--verbose',
+        },
+        filetypes = { 'arduino', 'ino', 'pde' },
+        root_dir = function(fname)
+          return lspconfig.util.root_pattern('*.ino', '.git')(fname) or vim.loop.cwd()
+        end,
+        settings = {}, -- no extra settings for now
+      },
       gopls = {},
       pyrefly = {},
+      --pyright = {},
       rust_analyzer = {},
       markdownlint = {},
       -- ... etc. See `:help lspconfig-all` for a list of all the pre-configured LSPs
@@ -207,7 +238,8 @@ return { -- LSP Configuration & Plugins
       'typescript-language-server',
       -- Python
       'ruff',
-      'pyright',
+      'pyrefly',
+      --'pyright',
       -- C
       'clangd',
       -- markdown