update doom config

config/doomemacs/config.el

@@ -32,7 +32,7 @@
 ;; There are two ways to load a theme. Both assume the theme is installed and
 ;; available. You can either set `doom-theme' or manually load a theme with the
 ;; `load-theme' function. This is the default:
-(setq doom-theme 'doom-dark+)
+(setq doom-theme 'doom-gruvbox)
 
 ;; This determines the style of line numbers in effect. If set to `nil', line
 ;; numbers are disabled. For relative line numbers, set this to `relative'.
@@ -74,3 +74,16 @@
 ;;
 ;; You can also try 'gd' (or 'C-c c d') to jump to their definition and see how
 ;; they are implemented.
+
+;; treemacs extension
+(setq treemacs-text-scale 1)
+(treemacs-git-mode 'deferred)
+(define-key treemacs-mode-map [mouse-1] #'treemacs-single-click-expand-action) ;; single click to open tree nodes
+
+;; code minimap
+(minimap-move-overlay-mouse [mouse-1])
+
+;; Rust config
+;; https://github.com/doomemacs/doomemacs/blob/develop/modules/lang/rust/README.org#enable-rls-by-default
+(setq rustic-lsp-server 'rust-analyzer)
+(setq rustic-lsp-client 'eglot)