Get rid of numpy.distutils

Since numpy 1.26.0, numpy.distutils is being removed in python 3.12, let's try to have a
solution that work for 3.12 *and* previous version without numpy.distutils.

Fix #2148

pythran/config.py

@@ -19,29 +19,6 @@ def get_include():
     return (os.path.dirname(os.path.dirname(__file__)) or '.') + '/pythran'
 
 
-class silent(object):
-    '''
-    Silent sys.stderr at the system level
-    '''
-
-    def __enter__(self):
-        try:
-            self.prevfd = os.dup(sys.stderr.fileno())
-            os.close(sys.stderr.fileno())
-        except io.UnsupportedOperation:
-            self.prevfd = None
-
-        self.prevstream = sys.stderr
-        sys.stderr = open(os.devnull, 'r')
-
-    def __exit__(self, exc_type, exc_value, traceback):
-        sys.stderr.close()
-        sys.stderr = self.prevstream
-        if self.prevfd:
-            os.dup2(self.prevfd, sys.stderr.fileno())
-            os.close(self.prevfd)
-
-
 def get_paths_cfg(
         sys_file='pythran.cfg',
         platform_file='pythran-{}.cfg'.format(sys.platform),
@@ -246,26 +223,9 @@ def parse_define(define):
         extension['define_macros'].append('PYTHRAN_BLAS_NONE')
 
     if user_blas not in reserved_blas_entries:
-        if sys.version_info < (3, 12):
-            # `numpy.distutils` not present for Python >= 3.12
-            try:
-                import numpy.distutils.system_info as numpy_sys
-                 # Numpy can pollute stdout with checks
-                with silent():
-                    numpy_blas = numpy_sys.get_info(user_blas)
-                    # required to cope with atlas missing extern "C"
-                    extension['define_macros'].append('PYTHRAN_BLAS_{}'
-                                                      .format(user_blas.upper()))
-                    extension['libraries'].extend(numpy_blas.get('libraries', []))
-                    extension['library_dirs'].extend(
-                        numpy_blas.get('library_dirs', []))
-                    extension['include_dirs'].extend(
-                        numpy_blas.get('include_dirs', []))
-            except Exception as exc:
-                raise RuntimeError(
-                    "The likely cause of this failure is an incompatibility "
-                    "between `setuptools` and `numpy.distutils. "
-                ) from exc
+        # required to cope with atlas missing extern "C"
+        extension['define_macros'].append('PYTHRAN_BLAS_{}'
+                                          .format(user_blas.upper()))
 
     # final macro normalization
     extension["define_macros"] = [

pythran/dist.py

@@ -14,13 +14,7 @@
 import os
 
 from distutils.command.build_ext import build_ext as LegacyBuildExt
-
-try:
-    # `numpy.distutils` is deprecated, and won't be present on Python >=3.12
-    # If it is installed, we need to use it though, so try-import it:
-    from numpy.distutils.extension import Extension
-except ImportError:
-    from distutils.extension import Extension
+from distutils.extension import Extension
 
 
 

pythran/tests/test_distutils.py

@@ -1,4 +1,5 @@
 from subprocess import check_call
+import glob
 import os
 import re
 import shutil
@@ -126,9 +127,11 @@ def test_setup_build3(self):
         libdir = os.path.join(base, 'lib')
         if not os.path.isdir(libdir):
             libdir = os.path.join(base, 'lib64')
+        demo3_site = glob.glob(
+                os.path.join(libdir, python_version, 'site-packages', 'demo3*')
+                )[0]
         check_call([python, '-c', 'import a'],
-                   cwd=os.path.join(libdir, python_version, 'site-packages',
-                                    'demo3'))
+                   cwd=demo3_site)
         check_call([python, 'setup.py', 'clean'],
                    cwd=os.path.join(cwd, 'test_distutils_numpy'))
         shutil.rmtree(os.path.join(cwd, 'test_distutils_numpy', 'demo_install3'))

pythran/tests/test_distutils_numpy/setup.py

@@ -1,5 +1,6 @@
-from numpy.distutils.core import setup
-from numpy.distutils.command.build_ext import build_ext as npy_build_ext
+from distutils.core import setup
+from distutils.command.build_ext import build_ext as npy_build_ext
+
 from pythran.dist import PythranExtension, PythranBuildExt
 
 module1 = PythranExtension('demo3.a', sources = ['demo3/a.py'])

pythran/toolchain.py

@@ -24,11 +24,7 @@
 
 from distutils.errors import CompileError
 from distutils import sysconfig
-try:
-    # `numpy.distutils is deprecated, may not be present, or broken
-    from numpy.distutils.core import setup
-except Exception:
-    from distutils.core import setup
+from distutils.core import setup
 
 from tempfile import mkdtemp, NamedTemporaryFile
 import gast as ast