PennyLaneAI · joeycarter · Oct 7, 2024 · Oct 11, 2024 · Oct 11, 2024 · Oct 11, 2024
diff --git a/doc/releases/changelog-dev.md b/doc/releases/changelog-dev.md
@@ -31,6 +31,13 @@
 
 <h3>Deprecations 👋</h3>
 
+<h3>Internal changes ⚙️</h3>
+
+* The `QuantumExtension` module (previously implemented with pybind11) has been removed. This module
+  was not included in the distributed wheels and has been deprecated to align with our adoption of
+  Python's stable ABI, which pybind11 does not support.
+  [(#1187)](https://github.com/PennyLaneAI/catalyst/pull/1187)
+
 <h3>Documentation 📝</h3>
 
 * A new tutorial going through how to write a new MLIR pass is available. The tutorial writes an empty pass that prints hello world. The code of the tutorial is at [a separate github branch](https://github.com/PennyLaneAI/catalyst/commit/ba7b3438667963b307c07440acd6d7082f1960f3).

diff --git a/mlir/python/CMakeLists.txt b/mlir/python/CMakeLists.txt
@@ -42,17 +42,6 @@ declare_mlir_dialect_python_bindings(
   dialects/mitigation.py
   DIALECT_NAME mitigation)
 
-declare_mlir_python_extension(QuantumPythonSources.Extension
-  MODULE_NAME _quantumDialects
-  ADD_TO_PARENT QuantumPythonSources
-  SOURCES
-    QuantumExtension.cpp
-  PRIVATE_LINK_LIBS
-    LLVMSupport
-    MLIRIR
-  EMBED_CAPI_LINK_LIBS
-    QuantumCAPI
-)
 
 ################################################################################
 # Common CAPI

diff --git a/mlir/python/QuantumExtension.cpp b/mlir/python/QuantumExtension.cpp
diff --git a/mlir/test/CMakeLists.txt b/mlir/test/CMakeLists.txt
@@ -22,7 +22,6 @@ set(TEST_SUITES
 
 if(QUANTUM_ENABLE_BINDINGS_PYTHON)
     list(APPEND DIALECT_TESTS_DEPEND QuantumPythonModules)
-    list(APPEND TEST_SUITES python)
 endif()
 
 add_lit_testsuite(check-dialects "Run the regression tests for mlir dialects"

diff --git a/mlir/test/python/lit.local.cfg b/mlir/test/python/lit.local.cfg
diff --git a/mlir/test/python/smoketest_catalyst.py b/mlir/test/python/smoketest_catalyst.py
diff --git a/mlir/test/python/smoketest_gradient.py b/mlir/test/python/smoketest_gradient.py
diff --git a/mlir/test/python/smoketest_quantum.py b/mlir/test/python/smoketest_quantum.py