Split evil into its own module to start making it optional.

config/emacs/modules/evil.el

@@ -0,0 +1,44 @@
+;;; evil.el --- Minimal Evil -*- lexical-binding: t; -*-
+;;; Commentary:
+;; Evil for text editing and navigation only, with Evil's own defaults for
+;; special buffers. Exceptions: dired (hjkl) and Magit (modules/git.el).
+;; evil-collection is not used.
+;;; Code:
+
+(use-package evil
+  :init
+  (setq evil-want-C-u-scroll t
+        evil-undo-system 'undo-redo)
+  :config
+  (evil-mode 1)
+
+  ;; Literal tab in insert state.
+  (evil-define-key 'insert 'global
+    (kbd "TAB")   #'self-insert-command
+    (kbd "C-SPC") #'completion-at-point) 
+
+  ;; project.el finders, dired-jump.
+  (evil-define-key '(normal motion) 'global
+    (kbd "C-e") #'dired-jump
+    (kbd "C-p") #'project-find-file
+    (kbd "C-f") #'project-find-regexp)
+
+  ;; eglot code navigation.
+  (evil-define-key '(normal motion) 'global
+    "gd" #'xref-find-definitions
+    "gD" #'xref-find-references
+    "K"  #'eldoc
+    (kbd "C-t") #'xref-go-back)
+
+  (evil-set-initial-state 'dired-mode 'motion))
+
+;; Dired: hjkl. j/k are Evil's line motions; h goes up a directory,
+;; l opens the file or directory at point.
+(with-eval-after-load 'dired
+  (evil-define-key 'motion dired-mode-map
+    "h"         #'dired-up-directory
+    "l"         #'dired-find-file
+    "."         #'dired-omit-mode
+    (kbd "RET") #'dired-find-file))
+
+;;; evil.el ends here