update setup to .toml, now compatible with python 3.13"

pyproject.toml

@@ -0,0 +1,51 @@
+[build-system]
+requires = [
+    "setuptools>=61.0",
+    "setuptools_scm",
+    "wheel",
+    "cython",
+    "numpy"
+]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "topocalc"
+description = "Topo calculations like gradient and sky view"
+authors = [
+    { name = "USDA ARS NWRC", email = "snow@ars.usda.gov" }
+]
+version = "0.1.1"
+license = { file = "LICENSE" }
+readme = "README.md"
+requires-python = ">=3.13"
+keywords = ["topocalc"]
+classifiers = [
+    "Development Status :: 2 - Pre-Alpha",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Natural Language :: English",
+    "Programming Language :: Python :: 3.13"
+]
+dependencies = [
+    "numpy>=2.1",
+    "Click>=7.0",
+    "spatialnc>=0.2.12",
+    "setuptools_scm"
+]
+
+
+[project.urls]
+Homepage = "https://github.com/USDA-ARS-NWRC/topocalc"
+
+[project.scripts]
+topocalc = "topocalc.cli:main"
+
+[tool.setuptools]
+packages = ["topocalc", "topocalc.core_c"]
+
+[tool.setuptools.package-data]
+"topocalc" = ["*.txt", "*.md"]
+"topocalc.core_c" = ["*.pxd", "*.pyx", "*.c"]
+
+[tool.setuptools_scm]
+local_scheme = "no-local-version"

setup.py

@@ -1,96 +1,37 @@
-#!/usr/bin/env python
-
+from setuptools import setup, Extension
+from setuptools.command.build_ext import build_ext as build_ext_orig
 import os
 
-import numpy
-from setuptools import Extension, find_packages, setup
-from setuptools.command.build_ext import build_ext as _build_ext
-
-# Test if compiling with cython or using the C source
 try:
-    from Cython.Distutils import build_ext as _build_ext
+    from Cython.Build import cythonize
+    USE_CYTHON = True
 except ImportError:
     USE_CYTHON = False
-else:
-    USE_CYTHON = True
-
-print('Using Cython {}'.format(USE_CYTHON))
-ext = '.pyx' if USE_CYTHON else '.c'
 
+ext = ".pyx" if USE_CYTHON else ".c"
+source_files = [
+    os.path.join("topocalc", "core_c", f"topo_core{ext}"),
+    os.path.join("topocalc", "core_c", "hor1d.c"),
+]
 
-class build_ext(_build_ext):
+class build_ext(build_ext_orig):
     def finalize_options(self):
-        _build_ext.finalize_options(self)
-
-
-with open('README.md') as readme_file:
-    readme = readme_file.read()
-
-with open('requirements.txt') as requirements_file:
-    requirements = requirements_file.read()
-
-setup_requirements = ['setuptools_scm']
-
-test_requirements = []
-
-# Give user option to specify their local compiler name
-if "CC" not in os.environ:
-    os.environ["CC"] = "gcc"
-
-cmdclass = {'build_ext': build_ext}
-ext_modules = []
-
-# topocalc core c functions
-loc = 'topocalc/core_c'  # location of the folder
-mname = os.path.join(loc, 'topo_core')
-mname = mname.replace('/', '.')
-ext_modules += [
-    Extension(mname,
-              sources=[os.path.join(loc, val) for val in [
-                  "topo_core.pyx",
-                  "hor1d.c",
-              ]],
-              include_dirs=[numpy.get_include()],
-              ),
+        super().finalize_options()
+        import numpy
+        self.include_dirs.append(numpy.get_include())
+
+extensions = [
+    Extension(
+        "topocalc.core_c.topo_core",
+        sources=source_files,
+        # Do not specify include_dirs here; handled in build_ext
+    )
 ]
 
+if USE_CYTHON:
+    extensions = cythonize(extensions)
+
 setup(
-    author="USDA ARS NWRC",
-    author_email='snow@ars.usda.gov',
-    python_requires='>=3.6',
-    classifiers=[
-        'Development Status :: 2 - Pre-Alpha',
-        'Intended Audience :: Developers',
-        'License :: OSI Approved :: MIT License',
-        'Natural Language :: English',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
-        'Programming Language :: Python :: 3.9'
-    ],
-    description="Topo calculations like gradient and sky view",
-    entry_points={
-        'console_scripts': [
-            'topocalc=topocalc.cli:main',
-        ],
-    },
-    install_requires=requirements,
-    license="CC0 1.0",
-    long_description=readme,
-    long_description_content_type="text/markdown",
-    include_package_data=True,
-    keywords='topocalc',
-    name='topocalc',
-    packages=find_packages(include=['topocalc', 'topocalc.*']),
-    setup_requires=setup_requirements,
-    test_suite='topocalc.tests',
-    tests_require=test_requirements,
-    cmdclass=cmdclass,
-    ext_modules=ext_modules,
-    url='https://github.com/USDA-ARS-NWRC/topocalc',
-    use_scm_version={
-        "local_scheme": "no-local-version"
-    },
-    zip_safe=False,
-)
+    ext_modules=extensions,
+    cmdclass={"build_ext": build_ext},
+)