config: nvim: add LSP support together with mason package manager

config/nvim/lua/plugins.lua

@@ -43,6 +43,38 @@ return require('packer').startup({
 			config = function() require('colorizer').setup() end,
 		}
 
+		--------------------
+		-- Package Manager
+		--------------------
+		use { -- portable package manager
+			'williamboman/mason.nvim',
+			config = load_config('mason'),
+		}
+		use { -- update helper for mason
+			'WhoIsSethDaniel/mason-tool-installer.nvim',
+			after = { 'mason.nvim' },
+			config = function() require('mason-tool-installer').setup({}) end,
+		}
+
+		--------------------
+		-- LSP Setup
+		--------------------
+		use { -- compatibility layer between mason and lspconfig + autoinstaller
+			'williamboman/mason-lspconfig.nvim',
+			after = { 'mason.nvim' },
+			requires = {
+				'neovim/nvim-lspconfig',
+			},
+		}
+		use { -- configuration layer for neovim LSP client
+			'neovim/nvim-lspconfig',
+			after = {
+				'mason-lspconfig.nvim',
+				'cmp-nvim-lsp',
+			},
+			config = load_config('lspconfig'),
+		}
+
 		--------------------
 		-- Snippets
 		--------------------
@@ -62,6 +94,10 @@ return require('packer').startup({
 		--------------------
 		-- Completion
 		--------------------
+		use { -- nvim-cmp source for nvim-lsp
+			'hrsh7th/cmp-nvim-lsp',
+			requires = { 'hrsh7th/nvim-cmp' },
+		}
 		use { -- nvim-cmp source for LuaSnip
 			'saadparwaiz1/cmp_luasnip',
 			requires = { 'hrsh7th/nvim-cmp' },
@@ -82,6 +118,7 @@ return require('packer').startup({
 		use { -- completion engine
 			'hrsh7th/nvim-cmp',
 			after = {
+				'cmp-nvim-lsp',
 				'cmp-buffer',
 				'cmp-path',
 				'cmp-cmdline',