diff --git a/init.org b/init.org
index d46eaf4..31d0c34 100644
--- a/init.org
+++ b/init.org
@@ -305,6 +305,14 @@ Windows Theme:
 :init
 (global-undo-tree-mode 1))
 #+END_SRC
+* ace-window
+#+begin_src emacs-lisp
+(use-package ace-window
+  :ensure t
+  :bind
+  (:map global-map
+        ("C-x o" . ace-window)))
+#+end_src
 * imenu-list
   :PROPERTIES:
   :ID:       0ae27ec9-5d77-43cf-ac76-5e12cc959046
@@ -923,6 +931,8 @@ Default completion is C-j
    :ID:       8c76fcd1-c57c-48ab-8af0-aa782de6337f
    :END:
  Systemseitig muss python-language-server installiert sein:
+apt install python3-pip python3-setuptools python3-wheel
+apt install build-essential python3-dev
  pip3 install 'python-language-server[all]'
 
  für andere language servers