Initial experiments with Lua config

lua/plugins/completions.lua

@@ -0,0 +1,46 @@
+return {
+  'neovim/nvim-lspconfig',
+  dependencies = {
+    'williamboman/mason.nvim',
+    'williamboman/mason-lspconfig.nvim',
+
+    'neovim/nvim-lspconfig',
+    'hrsh7th/cmp-nvim-lsp',
+    'hrsh7th/cmp-buffer',
+    'hrsh7th/cmp-path',
+    'hrsh7th/cmp-cmdline',
+    'hrsh7th/nvim-cmp',
+
+    'folke/neodev.nvim',
+
+    -- TODO: https://github.com/j-hui/fidget.nvim
+    -- TODO: https://github.com/nvimtools/none-ls.nvim
+    -- TODO: https://github.com/mfussenegger/nvim-dap
+    -- TODO: https://github.com/rcarriga/nvim-dap-ui
+  },
+  config = function()
+    require('neodev').setup()
+
+    require('mason').setup()
+    require('mason-lspconfig').setup({
+      ensure_installed = {
+        'clangd',
+        'cmake',
+        'lua_ls',
+      },
+      automatic_installation = false,
+      handlers = {
+        function(server_name)
+          require('lspconfig')[server_name].setup({})
+        end,
+      },
+    })
+
+    require('cmp').setup({
+      sources = {
+        { name = 'nvim_lsp' },
+        -- TODO: snippets
+      },
+    })
+  end,
+}