Tweak eglot and flymake to improve performance

init.el

@@ -854,8 +854,8 @@
 (use-package eldoc
   :custom
   (eldoc-echo-area-display-truncation-message nil)
-  (eldoc-echo-area-prefer-doc-buffer t)
+  (eldoc-echo-area-prefer-doc-buffer 'maybe)
-  (eldoc-echo-area-use-multiline-p nil))
+  (eldoc-echo-area-use-multiline-p 3))
 
 (use-package eglot
   :demand
@@ -865,9 +865,22 @@
   :hook (((nix-mode lua-mode js-base-mode typescript-ts-base-mode) . eglot-ensure)
          (eglot-managed-mode . (lambda () (add-hook 'flymake-diagnostic-functions 'eglot-flymake-backend nil t))))
   :custom
+  (eglot-menu-string "lsp")
+  (eglot-send-changes-idle-time 1)
   (eglot-extend-to-xref t)
   (eglot-autoshutdown t)
+  (eglot-sync-connect nil)
+  (eglot-connect-timeout 5)
   (eglot-autoreconnect (* 60 5))
+  (eglot-events-buffer-config '(:size 0))
+  (eglot-ignored-server-capabilities
+   '(:documentHighlightProvider
+     :documentFormattingProvider
+     :documentRangeFormattingProvider
+     :documentOnTypeFormattingProvider
+     :documentLinkProvider
+     :colorProvider
+     :foldingRangeProvider))
   :init
   (setq eglot-stay-out-of '(flymake))
   :config
@@ -917,7 +930,10 @@
 (use-package flymake
   :bind (("C-c C-." . flymake-goto-next-error)
          ("C-c C-," . flymake-goto-prev-error))
-  :hook (prog-mode . (lambda () (flymake-mode +1))))
+  :hook (prog-mode . (lambda () (flymake-mode +1)))
+  :custom
+  (flymake-no-changes-timeout 1)
+  (flymake-show-diagnostics-at-end-of-line nil))
 
 (use-package flymake-popon
   :diminish