Enable lexical binding in init files

.config/emacs/early-init.el

@@ -1 +1,3 @@
+;; -*- lexical-binding: t; -*-
+
 (setq package-enable-at-startup nil)

.config/emacs/init-elpaca.el

@@ -1,3 +1,5 @@
+;; -*- lexical-binding: t; -*-
+
 (defvar elpaca-installer-version 0.11)
 (defvar elpaca-directory (expand-file-name "elpaca/" user-emacs-directory))
 (defvar elpaca-builds-directory (expand-file-name "builds/" elpaca-directory))

.config/emacs/init.el

@@ -1,3 +1,5 @@
+;; -*- lexical-binding: t; -*-
+
 (load-file "~/.config/emacs/init-elpaca.el")
 
 (defun git-tracked-file-p (filename)