Moved the metadata into setup.cfg

Added pyproject.toml
The version is now fetched from git tags.

pyproject.toml

@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools>=30.3.0", "wheel", "setuptools_scm"]
+build-backend = "setuptools.build_meta"

setup.cfg

@@ -0,0 +1,20 @@
+[metadata]
+name = simpleeval
+author = Daniel Fairhead
+author_email = danthedeckie@gmail.com
+description = A simple, safe single expression evaluator library.
+keywords = eval, simple, expression, parse, ast
+url = https://github.com/danthedeckie/simpleeval
+long_description = file: README.rst
+long_description_content_type = text/x-rst
+classifiers =
+    Development Status :: 4 - Beta
+    Intended Audience :: Developers
+    License :: OSI Approved :: MIT License
+    Topic :: Software Development :: Libraries :: Python Modules
+    Programming Language :: Python
+
+[options]
+py_modules = simpleeval
+use_2to3 = True
+setup_requires = setuptools>=30.3.0; wheel; setuptools_scm

setup.py

@@ -1,25 +1,24 @@
+#!/usr/bin/env python3
+from os.path import dirname
+from os.path import join as pjoin
+
 from setuptools import setup
+from setuptools.config import read_configuration
 
-__version__ = '0.9.10'
+import setuptools_scm
 
-setup(
-    name='simpleeval',
-    py_modules=['simpleeval'],
-    version=__version__,
-    description='A simple, safe single expression evaluator library.',
-    long_description=open('README.rst', 'r').read(),
-    long_description_content_type='text/x-rst',
-    author='Daniel Fairhead',
-    author_email='danthedeckie@gmail.com',
-    url='https://github.com/danthedeckie/simpleeval',
-    download_url='https://github.com/danthedeckie/simpleeval/tarball/' + __version__,
-    keywords=['eval', 'simple', 'expression', 'parse', 'ast'],
-    test_suite='test_simpleeval',
-    use_2to3=True,
-    classifiers=['Development Status :: 4 - Beta',
-                 'Intended Audience :: Developers',
-                 'License :: OSI Approved :: MIT License',
-                 'Topic :: Software Development :: Libraries :: Python Modules',
-                 'Programming Language :: Python',
-                 ],
-)
+if __name__ == "__main__":
+    p = dirname(__file__)
+    setup_dict = read_configuration(pjoin(p, "setup.cfg"))
+    v = setuptools_scm.version_from_scm(str(p))
+    __version__ = setuptools_scm.format_version(
+        v,
+        version_scheme=setuptools_scm.DEFAULT_VERSION_SCHEME,
+        local_scheme=setuptools_scm.DEFAULT_LOCAL_SCHEME,
+    )
+    setup_dict = {
+        "version": __version__,
+    }
+    if v.exact:
+        setup_dict["download_url"] = setup_dict["url"] + "/tarball/" + str(v.tag)
+    setup(**setup_dict)