diff --git a/changelog.d/+ab59f6ef.added.md b/changelog.d/+ab59f6ef.added.md
new file mode 100644
index 00000000..80687cf7
--- /dev/null
+++ b/changelog.d/+ab59f6ef.added.md
@@ -0,0 +1 @@
+Add PDK capabilities to KCLayout [#171](https://github.com/gdsfactory/kfactory/pull/171)
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index a52e9a29..844af41b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,6 +49,9 @@ dev = [
 	"towncrier",
 	"tbump",
 	"types-requests",
+	"types-setuptools",
+	"types-docutils",
+	"types-Pygments",
 ]
 docs = [
 	"kfactory[ipy]",
diff --git a/src/kfactory/kcell.py b/src/kfactory/kcell.py
index 5d762ad6..e23f82c3 100644
--- a/src/kfactory/kcell.py
+++ b/src/kfactory/kcell.py
@@ -375,20 +375,6 @@ def __getattr__(self, __key: str) -> LayerEnclosure:
         return self.enclosure_map[__key]
 
 
-# class CellFactoryModel(BaseModel, arbitrary_types_allowed=True):
-#     """PDK access model for KCellFactories."""
-
-#     cellfactory_map: dict[str, CellFactory] = Field(default={})
-
-#     def __getitem__(self, __key: str) -> CellFactory:
-#         """Retrieve element by string key."""
-#         return self.cellfactory_map[__key]
-
-#     def __getattr__(self, __key: str) -> CellFactory:
-#         """Retrieve attribute by key."""
-#         return self.cellfactory_map[__key]
-
-
 class KCell:
     """KLayout cell and change its class to KCell.
 
@@ -750,7 +736,7 @@ def plot(self) -> None:
 
         Usage: Pass the kcell variable as an argument in the cell at the end
         """
-        from .widgets.interactive import display_kcell
+        from .widgets.interactive import display_kcell  # type: ignore[attr-defined]
 
         display_kcell(self)
 
diff --git a/src/kfactory/widgets/interactive.py b/src/kfactory/widgets/interactive.py
index 73c869d7..61c09797 100644
--- a/src/kfactory/widgets/interactive.py
+++ b/src/kfactory/widgets/interactive.py
@@ -1,3 +1,4 @@
+# type: ignore
 """Interactivate jupyter widget."""
 
 from __future__ import annotations
@@ -34,6 +35,8 @@
     print("You need install jupyter notebook plugin with `pip install kfactory[ipy]`")
     raise e
 
+__all__ = ["display_kcell"]
+
 
 def display_kcell(kc: KCell) -> None:
     cell_dup = kc.kcl[kc.name]