Drop dependency on distutils

CMakeLists.txt

@@ -1,5 +1,5 @@
 set(CMAKE_CXX_STANDARD 11)
-cmake_minimum_required(VERSION 3.11)
+cmake_minimum_required(VERSION 3.12)
 
 # Set APPLE_ARM to TRUE if running on Apple Silicon
 if(APPLE)

pybind_interface/GetPybind11.cmake

@@ -14,7 +14,7 @@ if (pybind11_FOUND)
   # The pybind11_add_module doesn't correctly set the CXX_INCLUDES properly if a system pybind11 is found.
   # Using `include_directories(${pybind11_INCLUDE_DIRS})` doesn't result in anything in
   # CXX_INCLUDES. e.g., `pybind_interface/basic/CMakeFiles/qsim_basic.dir/flags.make` would only
-  # have `CXX_INCLUDES = -isystem $PREFIX/include/python3.11` and would miss `$PREFIX/include`.
+  # have `CXX_INCLUDES = -isystem $PREFIX/include/python3.12` and would miss `$PREFIX/include`.
   # This problem would result in `fatal error: pybind11/complex.h: No such file or directory`
   # This is a hack to get around that by passing `-I/path/to/include` to CXX_FLAGS
   # Iterate over each include directory and add it as a compile option

pybind_interface/avx2/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.11)
+cmake_minimum_required(VERSION 3.12)
 project(qsim)
 
 IF (WIN32)

pybind_interface/avx512/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.11)
+cmake_minimum_required(VERSION 3.12)
 project(qsim)
 
 

pybind_interface/basic/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.11)
+cmake_minimum_required(VERSION 3.12)
 project(qsim)
 
 if(WIN32)

pybind_interface/cuda/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.11)
+cmake_minimum_required(VERSION 3.12)
 project(qsim LANGUAGES CXX CUDA)
 
 if(WIN32)

pybind_interface/custatevec/CMakeLists.txt

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-cmake_minimum_required(VERSION 3.11)
+cmake_minimum_required(VERSION 3.12)
 project(qsim LANGUAGES CXX CUDA)
 
 if(WIN32)

pybind_interface/decide/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.11)
+cmake_minimum_required(VERSION 3.12)
 
 if(WIN32)
     set(CMAKE_CXX_FLAGS "/O2 /openmp")

pybind_interface/sse/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.11)
+cmake_minimum_required(VERSION 3.12)
 project(qsim)
 
 IF (WIN32)

requirements.txt

@@ -3,3 +3,4 @@ cirq-core~=1.0
 numpy~=1.16
 pybind11
 typing_extensions
+packaging

setup.py

@@ -7,7 +7,6 @@
 
 from setuptools import setup, Extension
 from setuptools.command.build_ext import build_ext
-from distutils.version import LooseVersion
 
 
 class CMakeExtension(Extension):
@@ -27,10 +26,12 @@ def run(self):
             )
 
         if platform.system() == "Windows":
-            cmake_version = LooseVersion(
+            from packaging.version import parse
+
+            cmake_version = parse(
                 re.search(r"version\s*([\d.]+)", out.decode()).group(1)
             )
-            if cmake_version < "3.1.0":
+            if cmake_version < parse("3.1.0"):
                 raise RuntimeError("CMake >= 3.1.0 is required on Windows")
 
         for ext in self.extensions: