Use pyproject.toml for project configuration (#38)

This PR:

- Moves project configuration to `pyproject.toml`. One motivation for
this was that `cibuildwheel` was picking up the wrong Python versions,
and the recommended way to fix this is to have a `requires-python`
setting in our `pyproject.toml`.
- Removes `ibm2ieee.version` and `ibm2ieee.__version__`, whose presence
complicates the versioning and release process.

CHANGES

@@ -1,6 +1,17 @@
 Changelog for ibm2ieee
 ======================
 
+Release 1.3.1
+-------------
+
+Release date: 2023-03-31
+
+This bugfix release fixes the wheel building configuration. In the process,
+we also:
+
+- Move most of the package configuration to `pyproject.toml`
+- Drop the `ibm2ieee.version` module and the `ibm2ieee.__version__` attribute.
+
 Release 1.3.0
 -------------
 

ibm2ieee/__init__.py

@@ -9,10 +9,8 @@
 # Thanks for using Enthought open source!
 
 from ._ibm2ieee import ibm2float32, ibm2float64
-from .version import version as __version__
 
 __all__ = [
-    "__version__",
     "ibm2float32",
     "ibm2float64",
 ]

ibm2ieee/test/test_ibm2ieee.py

@@ -483,7 +483,6 @@ def test_import_star(self):
         exec("from ibm2ieee import *", locals, locals)
         self.assertIn("ibm2float32", locals)
         self.assertIn("ibm2float64", locals)
-        self.assertIn("__version__", locals)
 
     def test_np_info(self):
         output = io.StringIO()

pyproject.toml

@@ -2,6 +2,32 @@
 requires = ['oldest-supported-numpy', 'setuptools', 'wheel']
 build-backend = 'setuptools.build_meta'
 
+[project]
+name = 'ibm2ieee'
+version = '1.3.1'
+description = 'Convert IBM hexadecimal floating-point to IEEE 754 floating-point'
+readme = 'README.rst'
+requires-python = ">=3.7"
+license = {file = 'LICENSE.txt'}
+authors = [{name = 'Enthought', email = '[email protected]'}]
+keywords = ['ibm', 'hfp', 'ieee754', 'hexadecimal', 'floating-point', 'ufunc']
+classifiers=[
+    'Development Status :: 5 - Production/Stable',
+    'Intended Audience :: Developers',
+    'License :: OSI Approved :: BSD License',
+    'Operating System :: OS Independent',
+    'Programming Language :: Python :: 3',
+]
+dependencies = ['numpy']
+
+[project.urls]
+readme = 'https://github.com/enthought/ibm2ieee/blob/main/README.rst'
+repository = 'https://github.com/enthought/ibm2ieee'
+issues = 'https://github.com/enthought/ibm2ieee/issues'
+
+[tool.setuptools.packages.find]
+include = ['ibm2ieee*']
+
 [tool.black]
 line-length = 79
 target-version = ['py36']

setup.py

@@ -8,63 +8,16 @@
 #
 # Thanks for using Enthought open source!
 
-import os
-
 import numpy
 import setuptools
 
-
-def get_version_info():
-    """Extract version information as a dictionary from version.py."""
-    version_info = {}
-    version_filename = os.path.join("ibm2ieee", "version.py")
-    with open(version_filename, "r", encoding="utf-8") as version_module:
-        version_code = compile(version_module.read(), "version.py", "exec")
-        exec(version_code, version_info)
-    return version_info
-
-
-def get_long_description():
-    """Read long description from README.txt."""
-    with open("README.rst", "r", encoding="utf-8") as readme:
-        return readme.read()
-
-
-ibm2ieee_extension = setuptools.Extension(
-    name="ibm2ieee._ibm2ieee",
-    sources=["ibm2ieee/_ibm2ieee.c"],
-    define_macros=[("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION")],
-    include_dirs=[numpy.get_include()],
+setuptools.setup(
+    ext_modules=[
+        setuptools.Extension(
+            name="ibm2ieee._ibm2ieee",
+            sources=["ibm2ieee/_ibm2ieee.c"],
+            define_macros=[("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION")],
+            include_dirs=[numpy.get_include()],
+        )
+    ],
 )
-
-SHORT_DESCRIPTION = """\
-Convert IBM hexadecimal floating-point data to IEEE 754 floating-point data.
-""".rstrip()
-
-
-if __name__ == "__main__":
-    setuptools.setup(
-        name="ibm2ieee",
-        version=get_version_info()["version"],
-        author="Enthought",
-        author_email="[email protected]",
-        url="https://github.com/enthought/ibm2ieee",
-        description=SHORT_DESCRIPTION,
-        long_description=get_long_description(),
-        long_description_content_type="text/x-rst",
-        keywords="ibm hfp ieee754 hexadecimal floating-point ufunc",
-        install_requires=["numpy"],
-        extras_require={
-            "test": ["setuptools"],
-        },
-        python_requires=">=3.7",
-        packages=setuptools.find_packages(),
-        ext_modules=[ibm2ieee_extension],
-        classifiers=[
-            "Development Status :: 5 - Production/Stable",
-            "Intended Audience :: Developers",
-            "License :: OSI Approved :: BSD License",
-            "Operating System :: OS Independent",
-            "Programming Language :: Python :: 3",
-        ],
-    )