diff --git a/constants.nix b/constants.nix
index 038fef18..53da8ed1 100644
--- a/constants.nix
+++ b/constants.nix
@@ -9,7 +9,7 @@ rec {
     x64_system = "x86_64-linux";
     riscv64_system = "riscv64-linux";
     aarch64_system = "aarch64-linux";
-    # darwin systems
+    #darwin systems
     x64_darwin = "x86_64-darwin";
     aarch64_darwin = "aarch64-darwin";
   };
diff --git a/home/base/desktop/editors/emacs/README.md b/home/base/desktop/editors/emacs/README.md
index a6082ced..7dac09f5 100644
--- a/home/base/desktop/editors/emacs/README.md
+++ b/home/base/desktop/editors/emacs/README.md
@@ -1,7 +1,9 @@
 # Emacs Editor
 
 - Framework: <https://github.com/doomemacs/doomemacs>
-  - key bindings: <https://github.com/doomemacs/doomemacs/blob/master/modules/config/default/%2Bevil-bindings.el>
+  - key bindings:
+    - source code: <https://github.com/doomemacs/doomemacs/blob/master/modules/config/default/%2Bevil-bindings.el>
+    - docs: <https://github.com/doomemacs/doomemacs/blob/master/modules/editor/evil/README.org>
 - Chinese(rime) support: <https://github.com/DogLooksGood/emacs-rime>
 - modal editing:
   - <https://github.com/emacs-evil/evil>: evil mode, enabled by default in doom-emacs.
@@ -81,7 +83,8 @@ The same as neovim/vim:
 | Code Actions                             | `<Space> + ca`      |
 | Rename                                   | `<Space> + cr`      |
 | Opening LSP symbols                      | `<Space> + cS`      |
-| Comment Line(support multiple lines)     | `<Space> + /`       |
+| (Un)Comment the selected context         | `gc`                |
+| (Un)Comment the current line             | `gcc`               |
 | Open filepath/URL at cursor              | `gf`                |
 | Find files by keyword in path            | `<Space> + <Space>` |
 | Grep string in files (vertico + ripgrep) | `<Space> + sd`      |
diff --git a/home/base/desktop/editors/emacs/doom/config.el b/home/base/desktop/editors/emacs/doom/config.el
index d8deeec5..0a77ecf4 100644
--- a/home/base/desktop/editors/emacs/doom/config.el
+++ b/home/base/desktop/editors/emacs/doom/config.el
@@ -32,7 +32,11 @@
 ;; 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-one)
+;; (setq doom-theme 'doom-one)
+;; https://github.com/catppuccin/emacs/
+(setq doom-theme 'catppuccin)
+(setq catppuccin-flavor 'mocha) ;; or 'latte, 'macchiato, or 'frappe
+(catppuccin-reload)
 
 ;; 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'.
diff --git a/home/base/desktop/editors/emacs/doom/packages.el b/home/base/desktop/editors/emacs/doom/packages.el
index e1d7557b..590f56ca 100644
--- a/home/base/desktop/editors/emacs/doom/packages.el
+++ b/home/base/desktop/editors/emacs/doom/packages.el
@@ -14,6 +14,7 @@
 (package! wakatime-mode
   :recipe (:host github :repo "wakatime/wakatime-mode" :files ("*.el" "dist")))
 
+(package! catppuccin-theme)
 
 ;; To install SOME-PACKAGE from MELPA, ELPA or emacsmirror:
 ;; (package! some-package)