Build with setuptools

setup.py

@@ -21,7 +21,6 @@
 
 # Minimum allowed version
 MIN_PYTHON = (3, 7)
-IS_PYTHON_312 = sys.version_info[0] == 3 and sys.version_info[1] >= 12
 
 # Hacky (!!), adopted from sklearn. This sets a global variable
 # so pmdarima __init__ can detect if it's being loaded in the setup
@@ -54,6 +53,7 @@
 
 # import restricted version of pmdarima that does not need the compiled code
 import pmdarima
+
 VERSION = pmdarima.__version__  # will be 0.0.0 unless tagging
 
 # get the installation requirements:
@@ -139,17 +139,20 @@ def run(self):
         os.environ['NPY_BLAS_ORDER'] = ''
         os.environ['NPY_LAPACK_ORDER'] = ''
 
+
     class build_ext_subclass(build_ext):
         def build_extensions(self):
             build_ext.build_extensions(self)
 
+
     cmdclass['build_ext'] = build_ext_subclass
 
 except ImportError:
     # Numpy should not be a dependency just to be able to introspect
     # that python 3.X is required.
     pass
 
+
 # Here is where scikit configures the wheelhouse uploader, but we don't deal
 # with that currently. Maybe in the future...
 
@@ -318,47 +321,33 @@ def do_setup():
                 )
             )
 
-        # for sdist, use setuptools so we get the long_description_content_type
-        if 'sdist' in sys.argv or IS_PYTHON_312:
-            from setuptools import setup
-            print("Setting up with setuptools")
-
-            # TODO: distutils is removed in Python 3.12+, so this should probably be the default
-            if IS_PYTHON_312:
-                from setuptools import Extension
-
-                import numpy
-
-                include_dirs = [numpy.get_include()]
-                metadata['ext_modules'] = [
-                    Extension(
-                        name='pmdarima.arima._arima',
-                        sources=['pmdarima/arima/_arima.pyx'],
-                        include_dirs=include_dirs
-                    ),
-                    Extension(
-                        name='pmdarima.preprocessing.exog._fourier',
-                        sources=['pmdarima/preprocessing/exog/_fourier.pyx'],
-                        include_dirs=include_dirs
-                    ),
-                    Extension(
-                        name='pmdarima.utils._array',
-                        sources=['pmdarima/utils/_array.pyx'],
-                        include_dirs=include_dirs
-                    ),
-                    Extension(
-                        name='pmdarima.__check_build._check_build',
-                        sources=['pmdarima/__check_build/_check_build.pyx'],
-                        include_dirs=include_dirs
-                    )
-                ]
-        else:
-            # we should only need numpy for building. Everything else can be
-            # collected via install_requires above
-            check_package_status('numpy', '1.16')
-
-            from numpy.distutils.core import setup
-            print("Setting up with numpy.distutils.core")
+        from setuptools import setup, Extension
+        import numpy
+        print("Setting up with setuptools")
+
+        include_dirs = [numpy.get_include()]
+        metadata['ext_modules'] = [
+            Extension(
+                name='pmdarima.arima._arima',
+                sources=['pmdarima/arima/_arima.pyx'],
+                include_dirs=include_dirs
+            ),
+            Extension(
+                name='pmdarima.preprocessing.exog._fourier',
+                sources=['pmdarima/preprocessing/exog/_fourier.pyx'],
+                include_dirs=include_dirs
+            ),
+            Extension(
+                name='pmdarima.utils._array',
+                sources=['pmdarima/utils/_array.pyx'],
+                include_dirs=include_dirs
+            ),
+            Extension(
+                name='pmdarima.__check_build._check_build',
+                sources=['pmdarima/__check_build/_check_build.pyx'],
+                include_dirs=include_dirs
+            )
+        ]
 
         # add the config to the metadata
         metadata['configuration'] = configuration