Add pyproject.toml changes

Author: lithomas1

pyproject.toml

@@ -2,14 +2,12 @@
 # Minimum requirements for the build system to execute.
 # See https://github.com/scipy/scipy/pull/12940 for the AIX issue.
 requires = [
-    "setuptools>=51.0.0",
+    "meson-python",
     "wheel",
     "Cython>=0.29.32,<3",  # Note: sync with setup.py, environment.yml and asv.conf.json
     "oldest-supported-numpy>=0.10"
 ]
-# uncomment to enable pep517 after versioneer problem is fixed.
-# https://github.com/python-versioneer/python-versioneer/issues/193
-# build-backend = "setuptools.build_meta"
+build-backend = "mesonpy"
 
 [tool.cibuildwheel]
 skip = "cp36-* cp37-* pp37-* *-manylinux_i686 *_ppc64le *_s390x *-musllinux*"