feat: More user friendly language server installation

init.lua

@@ -3,7 +3,7 @@ local install_path = vim.fn.stdpath 'data' .. '/site/pack/packer/start/packer.nv
 local is_bootstrap = false
 if vim.fn.empty(vim.fn.glob(install_path)) > 0 then
   is_bootstrap = true
-  vim.fn.system({'git', 'clone', '--depth', '1', 'https://github.com/wbthomason/packer.nvim', install_path})
+  vim.fn.system { 'git', 'clone', '--depth', '1', 'https://github.com/wbthomason/packer.nvim', install_path }
   vim.cmd [[packadd packer.nvim]]
 end
 
@@ -335,37 +335,35 @@ end
 -- Setup mason so it can manage external tooling
 require('mason').setup()
 
--- Enable the following language servers
--- Feel free to add/remove any LSPs that you want here. They will automatically be installed
-local servers = { 'clangd', 'rust_analyzer', 'pyright', 'tsserver', 'sumneko_lua', 'gopls' }
-
--- Ensure the servers above are installed
-require('mason-lspconfig').setup {
-  ensure_installed = servers,
-}
-
 -- nvim-cmp supports additional completion capabilities
 local capabilities = vim.lsp.protocol.make_client_capabilities()
 capabilities = require('cmp_nvim_lsp').default_capabilities(capabilities)
 
-for _, lsp in ipairs(servers) do
-  require('lspconfig')[lsp].setup {
-    on_attach = on_attach,
+-- Configure language servers
+--  Automatically install language servers
+--  Set up a default handler for language servers, and a custom one as an example
+local mason_lspconfig = require 'mason-lspconfig'
+mason_lspconfig.setup {
+  automatic_installation = true,
+}
+
+mason_lspconfig.setup_handlers {
+  -- Default handler
+  function(server_name)
+    require('lspconfig')[server_name].setup {
       capabilities = capabilities,
+      on_attach = on_attach,
     }
-end
+  end,
+  ['sumneko_lua'] = function()
+    -- Example custom configuration for lua
+    --
+    -- Make runtime files discoverable to the server
+    local runtime_path = vim.split(package.path, ';')
+    table.insert(runtime_path, 'lua/?.lua')
+    table.insert(runtime_path, 'lua/?/init.lua')
 
--- Turn on lsp status information
-require('fidget').setup()
-
--- Example custom configuration for lua
---
--- Make runtime files discoverable to the server
-local runtime_path = vim.split(package.path, ';')
-table.insert(runtime_path, 'lua/?.lua')
-table.insert(runtime_path, 'lua/?/init.lua')
-
-require('lspconfig').sumneko_lua.setup {
+    require('lspconfig').sumneko_lua.setup {
       on_attach = on_attach,
       capabilities = capabilities,
       settings = {
@@ -387,8 +385,13 @@ require('lspconfig').sumneko_lua.setup {
           telemetry = { enable = false },
         },
       },
+    }
+  end,
 }
 
+-- Turn on lsp status information
+require('fidget').setup()
+
 -- nvim-cmp setup
 local cmp = require 'cmp'
 local luasnip = require 'luasnip'