Move package metadata to setup.cfg

Note the setup() includes only dynamically generated options.

GitHub seems to have recently fixed their dependency scanning to look
at setup.cfg (dependabot/dependabot-core#3423).
Possibly not deployed to GitHub yet.

setup.cfg

@@ -0,0 +1,38 @@
+[metadata]
+name = dwave-tabu
+version = attr: tabu.__version__
+description = Optimized Tabu solver for QUBOs
+long_description = file: README.rst
+long_description_content_type = text/x-rst
+license = Apache 2.0
+license_file = LICENSE
+author = D-Wave Systems Inc.
+author_email = [email protected]
+url = https://github.com/dwavesystems/dwave-tabu
+project_urls =
+    Documentation = https://docs.ocean.dwavesys.com/en/stable/docs_tabu/sdk_index.html
+    Issue Tracker = https://github.com/dwavesystems/dwave-tabu/issues/
+    Source Code = https://github.com/dwavesystems/dwave-tabu/
+classifiers =
+    License :: OSI Approved :: Apache Software License
+    Operating System :: OS Independent
+    Development Status :: 4 - Beta
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3 :: Only
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: Implementation :: CPython
+
+[options]
+packages = tabu
+zip_safe = false
+include_package_data = true
+python_requires = >=3.6
+install_requires =
+    numpy>=1.16.0,<2.0.0
+    dimod>=0.9.0,<0.10.0
+
+[aliases]
+dists = clean --all sdist bdist_wheel

setup.py

@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
-
 from setuptools import setup, Extension
 from setuptools.command.build_ext import build_ext
 from Cython.Build import cythonize
@@ -47,52 +45,13 @@ def build_extensions(self):
         super().build_extensions()
 
 
-# Load package info, without importing the package
-basedir = os.path.dirname(os.path.abspath(__file__))
-package_info_path = os.path.join(basedir, "tabu", "package_info.py")
-package_info = {}
-with open(package_info_path, encoding='utf-8') as f:
-    exec(f.read(), package_info)
-
-packages = ['tabu']
-
-# Package requirements, minimal pinning
-install_requires = ['numpy>=1.16.0', 'dimod>=0.9.0']
-
 extensions = [Extension(
     name='tabu.tabu_search',
     sources=['tabu/tabu_search.pyx', 'tabu/src/utils.cpp', 'tabu/src/bqp.cpp'],
     include_dirs=[numpy.get_include()]
 )]
 
-
-classifiers = [
-    'License :: OSI Approved :: Apache Software License',
-    'Operating System :: OS Independent',
-    'Development Status :: 3 - Alpha',
-    'Programming Language :: Python :: 3',
-    'Programming Language :: Python :: 3.6',
-    'Programming Language :: Python :: 3.7',
-    'Programming Language :: Python :: 3.8',
-    'Programming Language :: Python :: 3.9',
-]
-
-python_requires = '>=3.6'
-
 setup(
-    name=package_info['__packagename__'],
-    version=package_info['__version__'],
-    author=package_info['__author__'],
-    author_email=package_info['__authoremail__'],
-    description=package_info['__description__'],
-    long_description=open('README.rst', encoding='utf-8').read(),
-    url=package_info['__url__'],
-    license=package_info['__license__'],
-    classifiers=classifiers,
     cmdclass={'build_ext': build_ext_with_args},
     ext_modules=cythonize(extensions),
-    packages=packages,
-    python_requires=python_requires,
-    install_requires=install_requires,
-    zip_safe=False,
 )

tabu/__init__.py

@@ -12,6 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+__package_name__ = 'dwave-tabu'
+__version__ = '0.4.0'
+
 __all__ = ['TabuSearch', 'TabuSampler']
 
 from tabu.tabu_search import TabuSearch

tabu/package_info.py

@@ -12,12 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__packagename__ = 'dwave-tabu'
-__title__ = 'D-Wave Tabu'
-__version__ = '0.4.0'
+from tabu import __version__, __package_name__
+
 __author__ = 'D-Wave Systems Inc.'
-__authoremail__ = '[email protected]'
+__author_email__ = '[email protected]'
 __description__ = 'Optimized Tabu solver for QUBOs'
 __url__ = 'https://github.com/dwavesystems/dwave-tabu'
 __license__ = 'Apache 2.0'
-__copyright__ = '2018, D-Wave Systems Inc.'