LSP Integration

Integrated LSP functionality into neovim configurations. Installed
Mason to manage the installation of language servers. Used
mason-lspconfig for the bridge between Mason and nvim-lspconfig.
Also installed telescope-ui-select plugin to telescope to allow it
to use telescope and it's windows for code actions.

nvim/dot-config/nvim/lua/plugins/lsp-config.lua

@@ -0,0 +1,39 @@
+return {
+	{
+		"williamboman/mason.nvim",
+		config = function ()
+			require("mason").setup()
+		end
+	},
+	{
+		"williamboman/mason-lspconfig.nvim",
+		config = function ()
+			require("mason-lspconfig").setup({
+				ensure_installed = {
+					"clangd",
+					"cmake",
+					"lua_ls",
+					"pyright",
+					"rust_analyzer",
+					"taplo",
+				}
+			})
+		end
+	},
+	{
+		"neovim/nvim-lspconfig",
+		config = function()
+			local lspconfig = require("lspconfig")
+			lspconfig.clangd.setup({})
+			lspconfig.cmake.setup({})
+			lspconfig.lua_ls.setup({})
+			lspconfig.pyright.setup({})
+			lspconfig.rust_analyzer.setup({})
+			lspconfig.taplo.setup({})
+
+			vim.keymap.set('n', 'K', vim.lsp.buf.hover, {})
+			vim.keymap.set('n', 'gd', vim.lsp.buf.definition, {})
+			vim.keymap.set('n', '<leader>ca', vim.lsp.buf.code_action, {})
+		end
+	},
+}

nvim/dot-config/nvim/lua/plugins/telescope.lua

@@ -1,10 +1,43 @@
 return {
-	'nvim-telescope/telescope.nvim',
-	branch = '0.1.x',
-	dependencies = { 'nvim-lua/plenary.nvim' },
-	config = function()
-		local builtin = require('telescope.builtin')
-		vim.keymap.set('n', '<C-p>', builtin.find_files, {})
-		vim.keymap.set('n', '<leader>fg', builtin.live_grep, {})
-	end
+	{
+		'nvim-telescope/telescope.nvim',
+		branch = '0.1.x',
+		dependencies = { 'nvim-lua/plenary.nvim' },
+		config = function()
+			local builtin = require('telescope.builtin')
+			vim.keymap.set('n', '<C-p>', builtin.find_files, {})
+			vim.keymap.set('n', '<leader>fg', builtin.live_grep, {})
+		end
+	},
+	{
+		'nvim-telescope/telescope-ui-select.nvim',
+		config = function ()
+			-- This is your opts table
+			require("telescope").setup {
+				extensions = {
+					["ui-select"] = {
+						require("telescope.themes").get_dropdown {
+							-- even more opts
+						}
+						-- pseudo code / specification for writing custom displays, like the one
+						-- for "codeactions"
+						-- specific_opts = {
+						--   [kind] = {
+						--     make_indexed = function(items) -> indexed_items, width,
+						--     make_displayer = function(widths) -> displayer
+						--     make_display = function(displayer) -> function(e)
+						--     make_ordinal = function(e) -> string
+						--   },
+						--   -- for example to disable the custom builtin "codeactions" display
+						--      do the following
+						--   codeactions = false,
+						-- }
+					}
+				}
+			}
+			-- To get ui-select loaded and working with telescope, you need to call
+			-- load_extension, somewhere after setup function:
+			require("telescope").load_extension("ui-select")
+		end
+	}
 }