Updated Installation (markdown)

Installation.md

@@ -69,4 +69,20 @@ sudo pip install thefuck
 # Void Linux
 ```bash
 sudo xbps-install thefuck
+```
+
+#nixOS
+- my config is made with intended file
+       *configuration.nix*
+- this config is without flakes
+```nix
+  environment.systemPackages [
+    # ...
+    # tba
+    thefuck # app which corrects your previous console command
+    ];
+  programs.thefuck = {     
+		enable = true;     
+		alias = "fuck";        
+		};   
 ```