diff --git a/home-manager/traverseda/home.nix b/home-manager/traverseda/home.nix
index 9dfe57f..9fb60cf 100644
--- a/home-manager/traverseda/home.nix
+++ b/home-manager/traverseda/home.nix
@@ -82,6 +82,12 @@
     vimAlias = true;
     plugins.bufferline.enable = true;
     plugins.which-key.enable = true;
+
+    plugins.cmp-tabby = {
+      enable = true;
+      host = "localhost:8337";
+    };
+
     globals.mapleader = " ";
     keymaps = [
       {
diff --git a/home-manager/traverseda/kde-desktop.nix b/home-manager/traverseda/kde-desktop.nix
index 2002071..02f79ab 100644
--- a/home-manager/traverseda/kde-desktop.nix
+++ b/home-manager/traverseda/kde-desktop.nix
@@ -60,6 +60,7 @@
       "kwinrc"."Desktops"."Number"."value" = 10;
       "kwinrc"."Desktops"."Rows"."value" = 2;
       "kwinrc"."Plugins"."cubeEnabled" = true;
+      "kwinrc"."Windows"."FocusPolicy" = "FocusFollowsMouse";
     };
   };
 }
diff --git a/nixos/cad.nix b/nixos/cad.nix
index 18e2f22..756a79d 100644
--- a/nixos/cad.nix
+++ b/nixos/cad.nix
@@ -1,10 +1,10 @@
 { config, pkgs, lib, ... }:
 
 {
-
   environment.systemPackages = with pkgs; [
     pkgs.openscad
     pkgs.blender
+    #pkgs.py-slvs
     pkgs.freecad
     (pkgs.appimageTools.wrapType2
       {
diff --git a/pkgs/blender-cadsketcher/default.nix b/pkgs/blender-cadsketcher/default.nix
new file mode 100644
index 0000000..78cd433
--- /dev/null
+++ b/pkgs/blender-cadsketcher/default.nix
@@ -0,0 +1,57 @@
+{
+  description = "Blender CAD Sketcher";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+  outputs = {
+    self,
+    nixpkgs,
+    flake-utils,
+  }:
+    flake-utils.lib.eachDefaultSystem (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+    in {
+      devShells.default = pkgs.mkShell {
+        shellHook = ''
+        '';
+        packages = [
+          (
+            let
+              py-slvs = pythonPkgs:
+                pythonPkgs.buildPythonPackage rec {
+                  pname = "py-slvs";
+                  version = "1.0.6";
+
+                  src = pythonPkgs.fetchPypi {
+                    pname = "py_slvs";
+                    version = "1.0.6";
+                    sha256 = "sha256-U6T/aXy0JTC1ptL5oBmch0ytSPmIkRA8XOi31NpArnI=";
+                  };
+
+                  nativeBuildInputs = with pkgs; [swig];
+                  pyproject = true;
+
+                  propagatedBuildInputs = with pythonPkgs; [
+                    cmake
+                    ninja
+                    setuptools
+                    scikit-build
+                  ];
+
+                  dontUseCmakeConfigure = true;
+
+                  meta = with pkgs.lib; {
+                    description = "Python binding of SOLVESPACE geometry constraint solver";
+                    homepage = "https://github.com/realthunder/slvs_py";
+                    license = licenses.gpl3;
+                  };
+                };
+
+              blenderCadSketcher = pkgs.blender.withPackages (p: [(py-slvs p)]);
+            in
+              blenderCadSketcher
+          )
+        ];
+      };
+    });
+}
diff --git a/pkgs/default.nix b/pkgs/default.nix
index 6762b7f..6a65429 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -6,4 +6,5 @@
 {
   # example = pkgs.callPackage ./example { };
   creality-print = pkgs.callPackage ./creality-print { };
+  py-slvs = pkgs.callPackage ./py-slvs { };
 }
diff --git a/pkgs/py-slvs/default.nix b/pkgs/py-slvs/default.nix
new file mode 100644
index 0000000..5482acc
--- /dev/null
+++ b/pkgs/py-slvs/default.nix
@@ -0,0 +1,57 @@
+{
+  description = "Blender CAD Sketcher";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+  outputs = {
+    self,
+    nixpkgs,
+    flake-utils,
+  }:
+    flake-utils.lib.eachDefaultSystem (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+    in {
+      devShells.default = pkgs.mkShell {
+        shellHook = ''
+        '';
+        packages = [
+          (
+            let
+              py-slvs = pythonPkgs:
+                pythonPkgs.buildPythonPackage rec {
+                  pname = "py-slvs";
+                  version = "1.0.6";
+
+                  src = pythonPkgs.fetchPypi {
+                    pname = "py_slvs";
+                    version = "1.0.6";
+                    sha256 = "sha256-U6T/aXy0JTC1ptL5oBmch0ytSPmIkRA8XOi31NpArnI=";
+                  };
+
+                  nativeBuildInputs = with pkgs; [swig];
+                  pyproject = true;
+
+                  propagatedBuildInputs = with pythonPkgs; [
+                    cmake
+                    ninja
+                    setuptools
+                    scikit-build
+                  ];
+
+                  dontUseCmakeConfigure = true;
+
+                  meta = with pkgs.lib; {
+                    description = "Python binding of SOLVESPACE geometry constraint solver";
+                    homepage = "https://github.com/realthunder/slvs_py";
+                    license = licenses.gpl3;
+                  };
+                };
+
+              blenderWithPySlvs = pkgs.blender.withPackages (p: [(py-slvs p)]);
+            in
+              blenderWithPySlvs
+          )
+        ];
+      };
+    });
+}