diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..06e74de
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,28 @@
+{
+  description = "kutu wm environment";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+  outputs = { self, nixpkgs }:
+  let
+    system = "x86_64-linux";
+    pkgs = import nixpkgs {
+      inherit system;
+    };
+  in {
+    devShells.${system}.default = pkgs.mkShell {
+      packages = with pkgs; [
+        ruby
+        gcc
+        pkg-config
+
+        xorg.libxcb
+        xorg.xcbutilwm
+      ];
+
+      shellHook = ''
+        echo "kutu dev shell"
+      '';
+    };
+  };
+}
diff --git a/src/ruby/bindings.rb b/src/ruby/bindings.rb
index 71768ca..bffcd6d 100644
--- a/src/ruby/bindings.rb
+++ b/src/ruby/bindings.rb
@@ -132,7 +132,7 @@ keybind 171, presets[:mod] do |_event|
   run %q(dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Next)
 end
 
-keybind 110, presets[:mod] do |_event|
+keybind 89, presets[:mod] do |_event|
   monitor = current_monitor
   persistence_path = File.join(__dir__, ".num.json")
   persistence = File.exist?(persistence_path) ?
@@ -148,7 +148,7 @@ keybind 110, presets[:mod] do |_event|
   end
 end
 
-keybind 89, presets[:mod] do |event|
+keybind 81, presets[:mod] do |event|
   monitor = current_monitor
   persistence_path = File.join(__dir__, ".num.json")
   persistence = File.exist?(persistence_path) ?
diff --git a/src/shell/run.sh b/src/shell/run.sh
index 7aba8f6..4a5a581 100755
--- a/src/shell/run.sh
+++ b/src/shell/run.sh
@@ -2,7 +2,7 @@
 
 choice=$(
   (
-    printf "%s\n" godot mvox mox aseprite terraria zomboid silksong factorio oxygen
+    printf "%s\n" prism
     compgen -c
   ) |
     grep -v -E '^(if|fi|case|esac|for|done|while|until|select|function|return|continue|break|time|exec|source|alias|builtin|read|export|unset|local|set|declare|typeset|:|\.|\[|coproc|l|ll|ls|then|else|elif|do|in|\{|\}|!|\[\[|\]\]|_.*|compgen)$' |