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
 
@@ -335,60 +335,63 @@ 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,
-    capabilities = capabilities,
-  }
-end
+-- 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,
+  ['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')
+
+    require('lspconfig').sumneko_lua.setup {
+      on_attach = on_attach,
+      capabilities = capabilities,
+      settings = {
+        Lua = {
+          runtime = {
+            -- Tell the language server which version of Lua you're using (most likely LuaJIT)
+            version = 'LuaJIT',
+            -- Setup your lua path
+            path = runtime_path,
+          },
+          diagnostics = {
+            globals = { 'vim' },
+          },
+          workspace = {
+            library = vim.api.nvim_get_runtime_file('', true),
+            checkThirdParty = false,
+          },
+          -- Do not send telemetry data containing a randomized but unique identifier
+          telemetry = { enable = false },
+        },
+      },
+    }
+  end,
+}
 
 -- 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 {
-  on_attach = on_attach,
-  capabilities = capabilities,
-  settings = {
-    Lua = {
-      runtime = {
-        -- Tell the language server which version of Lua you're using (most likely LuaJIT)
-        version = 'LuaJIT',
-        -- Setup your lua path
-        path = runtime_path,
-      },
-      diagnostics = {
-        globals = { 'vim' },
-      },
-      workspace = {
-        library = vim.api.nvim_get_runtime_file('', true),
-        checkThirdParty = false,
-      },
-      -- Do not send telemetry data containing a randomized but unique identifier
-      telemetry = { enable = false },
-    },
-  },
-}
-
 -- nvim-cmp setup
 local cmp = require 'cmp'
 local luasnip = require 'luasnip'