feat: python language server working

Author: Anup Sebastian

init.lua

@@ -811,7 +811,7 @@ require('lazy').setup({
       require('mason-tool-installer').setup { ensure_installed = ensure_installed }
 
       require('mason-lspconfig').setup {
-        ensure_installed = {}, -- explicitly set to an empty table (Kickstart populates installs via mason-tool-installer)
+        ensure_installed = {},
         automatic_installation = false,
         handlers = {
           function(server_name)
@@ -822,16 +822,20 @@ require('lazy').setup({
             server.capabilities = vim.tbl_deep_extend('force', {}, capabilities, server.capabilities or {})
 
             -- Use new vim.lsp.config API for Neovim 0.11+
-            local lspconfig_servers = require('lspconfig.configs')
-            local config = lspconfig_servers[server_name]
-            if config then
+            -- Load the server config from lspconfig
+            local ok, lspconfig_server = pcall(require, 'lspconfig.server_configurations.' .. server_name)
+            if ok and lspconfig_server.default_config then
+              local config = lspconfig_server.default_config
               vim.lsp.config(server_name, {
-                cmd = server.cmd or config.default_config.cmd,
-                filetypes = server.filetypes or config.default_config.filetypes,
-                root_markers = config.default_config.root_dir,
+                cmd = server.cmd or config.cmd,
+                filetypes = server.filetypes or config.filetypes,
+                root_markers = config.root_dir,
                 capabilities = server.capabilities,
                 settings = server.settings,
               })
+              
+              -- Enable the LSP for the configured filetypes
+              vim.lsp.enable(server_name)
             end
           end,
         },
@@ -1144,5 +1148,52 @@ require('lazy').setup({
   },
 })
 
+-- ========================================================================
+-- LANGUAGE-SPECIFIC LSP SETUP (for lazy-loaded profiles)
+-- ========================================================================
+-- Python LSP - starts when opening .py files
+vim.api.nvim_create_autocmd('FileType', {
+  pattern = 'python',
+  once = false,
+  callback = function(args)
+    -- Check if pyright is already attached
+    local clients = vim.lsp.get_clients({ bufnr = args.buf, name = 'pyright' })
+    if #clients > 0 then
+      return
+    end
+    
+    -- Get capabilities from blink.cmp
+    local capabilities = require('blink.cmp').get_lsp_capabilities()
+    
+    local root_dir = vim.fs.root(args.buf, { 
+      'pyproject.toml', 
+      'setup.py', 
+      'setup.cfg', 
+      'requirements.txt', 
+      'Pipfile', 
+      'pyrightconfig.json', 
+      '.git' 
+    })
+    
+    vim.lsp.start({
+      name = 'pyright',
+      cmd = { vim.fn.stdpath('data') .. '/mason/bin/pyright-langserver', '--stdio' },
+      root_dir = root_dir or vim.fn.getcwd(),
+      capabilities = capabilities,
+      settings = {
+        python = {
+          analysis = {
+            typeCheckingMode = 'basic',
+            autoImportCompletions = true,
+            autoSearchPaths = true,
+            useLibraryCodeForTypes = true,
+            diagnosticMode = 'openFilesOnly',
+          },
+        },
+      },
+    })
+  end,
+})
+
 -- The line beneath this is called `modeline`. See `:help modeline`
 -- vim: ts=2 sts=2 sw=2 et

lazy-lock.json

@@ -11,16 +11,16 @@
   "gitsigns.nvim": { "branch": "main", "commit": "20ad4419564d6e22b189f6738116b38871082332" },
   "guess-indent.nvim": { "branch": "main", "commit": "84a4987ff36798c2fc1169cbaff67960aed9776f" },
   "lazy.nvim": { "branch": "main", "commit": "f0f5bbb9e5bfae5e6468f9359ffea3d151418176" },
-  "lazydev.nvim": { "branch": "main", "commit": "faf46237f0df43a29e12abd143ff1a0bbac27b7e" },
-  "mason-lspconfig.nvim": { "branch": "main", "commit": "3590d66effccc7376d8c3dbe45e8291f9fed2843" },
+  "lazydev.nvim": { "branch": "main", "commit": "371cd7434cbf95606f1969c2c744da31b77fcfa6" },
+  "mason-lspconfig.nvim": { "branch": "main", "commit": "d7b5feb6e769e995f7fcf44d92f49f811c51d10c" },
   "mason-tool-installer.nvim": { "branch": "main", "commit": "517ef5994ef9d6b738322664d5fdd948f0fdeb46" },
   "mason.nvim": { "branch": "main", "commit": "ad7146aa61dcaeb54fa900144d768f040090bff0" },
-  "mini.nvim": { "branch": "main", "commit": "ee4a4a4abed25e3d108d985b0553c5271f2f71aa" },
+  "mini.nvim": { "branch": "main", "commit": "e96ef335c7c68d2bc6359cdb7cf0941889df9be0" },
   "neo-tree.nvim": { "branch": "main", "commit": "8cdd6b1940f333c1dd085526a9c45b30fb2dbf50" },
   "nui.nvim": { "branch": "main", "commit": "de740991c12411b663994b2860f1a4fd0937c130" },
   "nvim-dap": { "branch": "master", "commit": "6782b097af2417a4c3e33849b0a26ae2188bd7ea" },
   "nvim-dap-ui": { "branch": "master", "commit": "cf91d5e2d07c72903d052f5207511bf7ecdb7122" },
-  "nvim-lspconfig": { "branch": "master", "commit": "c8c9420b7676caf14e1e1d96caed204a81ba860f" },
+  "nvim-lspconfig": { "branch": "master", "commit": "e25994a1c2373784364852cd904cb39b6d75f227" },
   "nvim-nio": { "branch": "master", "commit": "21f5324bfac14e22ba26553caf69ec76ae8a7662" },
   "nvim-treesitter": { "branch": "master", "commit": "42fc28ba918343ebfd5565147a42a26580579482" },
   "plenary.nvim": { "branch": "master", "commit": "b9fd5226c2f76c951fc8ed5923d85e4de065e509" },

lua/custom/plugins/python.lua

@@ -20,58 +20,50 @@
 
 return {
   -- ========================================================================
-  -- PYTHON LSP - Language Server Protocol for Python
-  -- ========================================================================
-  -- Provides intelligent code completion, go-to-definition, type checking,
-  -- and more for Python files using pyright (fast, feature-rich LSP)
+  -- MASON TOOL INSTALLER - Install Python tools on-demand
   -- ========================================================================
   {
-    'neovim/nvim-lspconfig',
-    ft = 'python', -- Only load when opening Python files
-    dependencies = {
-      'WhoIsSethDaniel/mason-tool-installer.nvim', -- For installing pyright
-    },
+    'WhoIsSethDaniel/mason-tool-installer.nvim',
+    ft = 'python',
+    dependencies = { 'williamboman/mason.nvim' },
     config = function()
-      -- Get shared LSP capabilities from blink.cmp
-      local capabilities = require('blink.cmp').get_lsp_capabilities()
+      -- Wait for Mason registry to be ready
+      local function install_tools()
+        local registry_ok, registry = pcall(require, 'mason-registry')
+        if not registry_ok then
+          vim.notify('Mason registry not ready, retrying...', vim.log.levels.WARN)
+          vim.defer_fn(install_tools, 100)
+          return
+        end
 
-      -- Setup pyright LSP server using new vim.lsp.config API (Neovim 0.11+)
-      local pyright_config = require('lspconfig.configs').pyright
-      if pyright_config then
-        vim.lsp.config('pyright', {
-          cmd = pyright_config.default_config.cmd,
-          filetypes = pyright_config.default_config.filetypes,
-          root_markers = pyright_config.default_config.root_dir,
-          capabilities = capabilities,
-          settings = {
-            python = {
-              analysis = {
-                -- Type checking mode: "off", "basic", or "strict"
-                typeCheckingMode = 'basic',
-                -- Auto-import completions
-                autoImportCompletions = true,
-                -- Automatically search for stubs
-                autoSearchPaths = true,
-                -- Use library code for types
-                useLibraryCodeForTypes = true,
-                -- Diagnostic mode: "openFilesOnly" or "workspace"
-                diagnosticMode = 'openFilesOnly',
-              },
-            },
-          },
-        })
+        -- Refresh registry and install tools
+        registry.refresh(function()
+          local tools = { 'pyright', 'ruff' }
+          for _, tool in ipairs(tools) do
+            local ok, package = pcall(registry.get_package, tool)
+            if ok and not package:is_installed() then
+              vim.notify('Installing ' .. tool .. '...', vim.log.levels.INFO)
+              package:install()
+            end
+          end
+        end)
       end
 
-      -- Install Python tools via Mason
-      require('mason-tool-installer').setup {
-        ensure_installed = {
-          'pyright', -- LSP server for type checking and completions
-          'ruff', -- Fast formatter, linter, and import organizer (replaces black, isort, flake8)
-        },
-      }
+      -- Start installation after a short delay
+      vim.defer_fn(install_tools, 200)
     end,
   },
 
+  -- ========================================================================
+  -- PYTHON LSP - Language Server Protocol for Python
+  -- ========================================================================
+  -- Note: Pyright LSP setup is in init.lua (after lazy.setup) because
+  -- nvim-lspconfig is already loaded there, and we can't re-trigger its
+  -- config function with ft='python'. The autocmd in init.lua will start
+  -- pyright when you open a .py file.
+  -- ========================================================================
+
+
   -- ========================================================================
   -- PYTHON FORMATTERS - Auto-format Python code
   -- ========================================================================