diff --git a/pkgs/development/python-modules/kfactory/default.nix b/pkgs/development/python-modules/kfactory/default.nix
new file mode 100644
index 000000000000..3652d517d048
--- /dev/null
+++ b/pkgs/development/python-modules/kfactory/default.nix
@@ -0,0 +1,77 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  pytestCheckHook,
+  setuptools,
+  setuptools-scm,
+  klayout,
+  aenum,
+  cachetools,
+  gitpython,
+  loguru,
+  pydantic,
+  pydantic-settings,
+  rectangle-packer,
+  requests,
+  ruamel-yaml-string,
+  scipy,
+  tomli,
+  toolz,
+  typer,
+  numpy,
+  ruamel-yaml,
+}:
+
+buildPythonPackage rec {
+  pname = "kfactory";
+  version = "0.21.7";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "gdsfactory";
+    repo = "kfactory";
+    rev = "v${version}";
+    sha256 = "sha256-VLhAJ5rOBKEO1FDCnlaseA+SmrMSoyS+BaEzjdHm59Y=";
+  };
+
+  build-system = [
+    setuptools
+    setuptools-scm
+  ];
+
+  dependencies = [
+    aenum
+    cachetools
+    gitpython
+    klayout
+    loguru
+    numpy
+    pydantic
+    pydantic-settings
+    rectangle-packer
+    requests
+    ruamel-yaml
+    ruamel-yaml-string
+    scipy
+    tomli
+    toolz
+    typer
+  ];
+
+  pythonImportsCheck = [ "kfactory" ];
+
+  nativeCheckInputs = [ pytestCheckHook ];
+
+  # https://github.com/gdsfactory/kfactory/issues/511
+  disabledTestPaths = [
+    "tests/test_pdk.py"
+  ];
+
+  meta = with lib; {
+    description = "KLayout API implementation of gdsfactory";
+    homepage = "https://github.com/gdsfactory/kfactory";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fbeffa ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index b69f15324023..ba378582c7b4 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6981,6 +6981,8 @@ self: super: with self; {
     inherit (pkgs) keyutils;
   };
 
+  kfactory = callPackage ../development/python-modules/kfactory { };
+
   khanaa = callPackage ../development/python-modules/khanaa {};
 
   kicad = toPythonModule (pkgs.kicad.override {