Don't repeat yourself in custom lspconfigs

lua/plugins/completions.lua

@@ -72,57 +72,48 @@ return {
   },
 
   config = function()
-    local capabilities = vim.lsp.protocol.make_client_capabilities()
-    capabilities = vim.tbl_deep_extend(
-      'force', capabilities, require('cmp_nvim_lsp').default_capabilities())
+    local lspconfig_default_opts = {
+      -- Broadcast full client capabilities to language servers
+      capabilities = vim.tbl_deep_extend(
+        'force', vim.lsp.protocol.make_client_capabilities(),
+        require('cmp_nvim_lsp').default_capabilities()),
+    }
+
+    local lspconfig_custom_opts = {
+      clangd = {
+        cmd = { 'clangd', '--completion-style=detailed' },
+      },
+
+      lua_ls = {
+        settings = {
+          Lua = {
+            diagnostics = {
+              disable = { 'missing-fields', },
+              globals = { 'vim', },
+            },
+          },
+        },
+      },
+
+      pyright = {
+        settings = {
+          pyright = {
+            disableOrganizeImports = true,
+          },
+        },
+      },
+    }
 
     require('mason').setup()
     require('mason-lspconfig').setup({
       automatic_installation = false,
       ensure_installed = ensure_installed,
-
       handlers = {
-        -- Default handler, sets up everything unless a custom language server
-        -- setup handler is defined below
         function(server_name)
-          require('lspconfig')[server_name].setup({
-            capabilities = capabilities,
-          })
+          local opts = vim.tbl_deep_extend("force",
+            lspconfig_default_opts, lspconfig_custom_opts[server_name] or {})
+          require('lspconfig')[server_name].setup(opts)
         end,
-
-        ['clangd'] = function()
-          require('lspconfig').clangd.setup({
-            capabilities = capabilities,
-            cmd = { 'clangd', '--completion-style=detailed' }
-          })
-        end,
-
-        ['lua_ls'] = function()
-          require('neodev').setup()
-          require('lspconfig').lua_ls.setup({
-            capabilities = capabilities,
-            settings = {
-              Lua = {
-                diagnostics = {
-                  disable = { 'missing-fields', },
-                  globals = { 'vim', },
-                }
-              }
-            }
-          })
-        end,
-
-        ['pyright'] = function()
-          require('lspconfig').pyright.setup({
-            capabilities = capabilities,
-            settings = {
-              pyright = {
-                disableOrganizeImports = true, -- Use ruff import sorter instead
-              },
-            }
-          })
-        end,
-
       },
     })