use treemacs

config/doom/config.el

@@ -2,7 +2,8 @@
 
 ;; Place your private configuration here! Remember, you do not need to run 'doom
 ;; sync' after modifying this file!
-
+(global-set-key [f8] 'treemacs)
+(global-set-key [C-f8] 'treemacs-find-file)
 
 ;; Some functionality uses this to identify you, e.g. GPG configuration, email
 ;; clients, file templates and snippets.

config/doom/init.el

@@ -41,7 +41,7 @@
        (popup +defaults)   ; tame sudden yet inevitable temporary windows
        ;;pretty-code       ; ligatures or substitute text with pretty symbols
        ;;tabs              ; a tab bar for Emacs
-       ;;treemacs          ; a project drawer, like neotree but cooler
+       treemacs          ; a project drawer, like neotree but cooler
        ;;unicode           ; extended unicode support for various languages
        vc-gutter         ; vcs diff in the fringe
        vi-tilde-fringe   ; fringe tildes to mark beyond EOB