Disable garbage collection during Emacs startup

Taken from https://protesilaos.com/emacs/dotemacs, nice idea :)

early-init.el

@@ -2,4 +2,14 @@
 
 (setq package-user-dir (expand-file-name "elpa" user-emacs-directory))
 
+;; From https://protesilaos.com/emacs/dotemacs: temporarily increase the GC
+;; threshold on startup to speed up booting.  Reenable GC limits as soon as
+;; Emacs is started.
 
+(setq gc-cons-threshold most-positive-fixnum
+      gc-cons-percentage 0.5)
+
+(add-hook 'emacs-startup-hook
+          (lambda ()
+            (setq gc-cons-threshold (* 100 1024 1024)   ; 100mb
+                  gc-cons-percentage 0.1)))

init.el

@@ -153,7 +153,6 @@
       history-delete-duplicates t
       track-eol t
       garbage-collection-messages nil
-      gc-cons-threshold (* 100 1024 1024)   ; 100mb
       read-process-output-max (* 1024 1024) ; 1mb
       next-error-message-highlight t
       help-enable-symbol-autoload t