Switch from setup.py to setup.cfg

A bug is blocking setuptools from working with python2 [bug]. Work is on its
way [pr]. Until that is fixed, package_dir should be defined in setup.py to
preserve compatibility of the native str type.

  [bug]: pypa/setuptools#1136
  [pr]: pypa/setuptools#1180

Signed-off-by: Ivan Kanakarakis <ivan.kanak@gmail.com>

VERSION

@@ -0,0 +1 @@
+4.5.0

setup.cfg

@@ -0,0 +1,102 @@
+[metadata]
+name = pysaml2
+version = file:VERSION
+author = IdentityPython
+author-email = discuss@idpy.org
+maintainer = IdentityPython
+maintainer-email = discuss@idpy.org
+license = Apache License Version 2.0
+license-file = LICENSE
+description = Python implementation of SAML Version 2 Standard
+long-description = file:README.rst
+long_description_content_type = text/x-rst; charset=UTF-8
+home-page = https://idpy.org
+project_urls =
+    Bug Tracker = https://github.com/IdentityPython/pysaml2/issues
+    Documentation = https://pysaml2.readthedocs.io
+    Source Code = https://github.com/IdentityPython/pysaml2
+classifier =
+    Development Status :: 4 - Beta
+    License :: OSI Approved :: Apache Software License
+    Topic :: Software Development :: Libraries :: Python Modules
+    Programming Language :: Python
+    Programming Language :: Python :: 2
+    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.4
+    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+requires-dist = setuptools
+keywords =
+    saml
+    saml2
+    standard
+    federation
+    idpy
+    IdentityPython
+
+
+[options]
+zip_safe = False
+include_package_data = True
+package_dir =
+    = src
+packages = find:
+scripts =
+    tools/make_metadata.py
+    tools/mdexport.py
+    tools/merge_metadata.py
+    tools/parse_xsd2.py
+install_requires =
+    cryptography
+    defusedxml
+    future
+    pyOpenSSL
+    python-dateutil
+    pytz
+    requests >= 1.0.0
+    six
+
+
+[options.packages.find]
+where = src
+include =
+    saml2
+    saml2.*
+
+
+[options.package_data]
+* =
+    *.xml
+
+
+[options.extras_require]
+s2repoze =
+    paste
+    zope.interface
+    repoze.who
+
+
+[bdist_wheel]
+universal = 1
+
+
+[flake8]
+author-attribute = forbidden
+no-accept-encodings = True
+assertive-snakecase = True
+# assertive-test-pattern = <fnmatch>
+inline-quotes = '
+multiline-quotes = '''
+docstring-quotes = """
+application-import-names = saml2
+
+hang_closing = false
+doctests = false
+max-complexity = 10
+exclude =
+    .git
+    __pycache__
+    docs/source/conf.py
+    build
+    dist

setup.py

@@ -1,78 +1,13 @@
-"""Setup.py entry point for package."""
+"""Setup.py entry point for package.
 
-import re
+Configuration is handled by setuptools>30.3.0 through setup.cfg.
+https://setuptools.readthedocs.io/en/latest/setuptools.html#metadata
+https://setuptools.readthedocs.io/en/latest/setuptools.html#options
+"""
 
 import setuptools
 
 
-version = ''
-VERSION_REGEX = r'^__version__\s*=\s*[\'"]([^\'"]*)[\'"]'
-with open('src/saml2/__init__.py', 'r') as fd:
-    content = fd.read()
-    version = re.search(VERSION_REGEX, content, re.MULTILINE).group(1)
-
 setuptools.setup(
-    name='pysaml2',
-    version=version,
-    description='Python implementation of SAML Version 2 Standard',
-    license='Apache 2.0',
-    url='https://github.com/IdentityPython/pysaml2',
-    packages=[
-        'saml2',
-        'saml2/attributemaps',
-        'saml2/authn_context',
-        'saml2/entity_category',
-        'saml2/extension',
-        'saml2/profile',
-        'saml2/s2repoze',
-        'saml2/s2repoze.plugins',
-        'saml2/schema',
-        'saml2/userinfo',
-        'saml2/ws',
-        'saml2/xmldsig',
-        'saml2/xmlenc',
-    ],
-    package_dir={
-        '': 'src',
-    },
-    package_data={
-        '': [
-            'xml/*.xml',
-        ],
-    },
-    classifiers=[
-        'Development Status :: 4 - Beta',
-        'License :: OSI Approved :: Apache Software License',
-        'Topic :: Software Development :: Libraries :: Python Modules',
-        'Programming Language :: Python',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
-    ],
-    scripts=[
-        'tools/make_metadata.py',
-        'tools/mdexport.py',
-        'tools/merge_metadata.py',
-        'tools/parse_xsd2.py',
-    ],
-    install_requires=[
-        'cryptography',
-        'defusedxml',
-        'future', 'pyOpenSSL',
-        'python-dateutil',
-        'pytz',
-        'requests >= 1.0.0',
-        'six',
-    ],
-    extras_require={
-        's2repoze': [
-            'paste',
-            'zope.interface',
-            'repoze.who',
-        ],
-    },
-    zip_safe=False,
+    package_dir={'': 'src'},
 )