Reset setup.py to ensure compatibility

setup.py

@@ -1,3 +1,108 @@
-from setuptools import setup
+import re
+import sys
+import os
+from collections import defaultdict
 
-setup()
+from setuptools import find_packages, setup
+
+import versioneer
+
+if sys.version_info < (3, 6):
+    error = """
+ams does not support Python <= {0}.{1}.
+Python 3.6 and above is required. Check your Python version like so:
+
+python3 --version
+
+This may be due to an out-of-date pip. Make sure you have pip >= 9.0.1.
+Upgrade pip like so:
+
+pip install --upgrade pip
+""".format(3, 6)
+    sys.exit(error)
+
+here = os.path.abspath(os.path.dirname(__file__))
+
+with open(os.path.join(here, 'README.md'), encoding='utf-8') as readme_file:
+    readme = readme_file.read()
+
+
+def parse_requires(filename):
+    with open(os.path.join(here, filename)) as requirements_file:
+        reqs = [
+            line for line in requirements_file.read().splitlines()
+            if not line.startswith('#')
+        ]
+    return reqs
+
+
+def get_extra_requires(filename, add_all=True):
+    """
+    Build ``extras_require`` from an invert requirements file.
+
+    See:
+    https://hanxiao.io/2019/11/07/A-Better-Practice-for-Managing-extras-require-Dependencies-in-Python/
+    """
+
+    with open(os.path.join(here, filename)) as fp:
+        extra_deps = defaultdict(set)
+        for k in fp:
+            if k.strip() and not k.startswith('#'):
+                tags = set()
+                if '#' in k:
+                    if k.count("#") > 1:
+                        raise ValueError("Invalid line: {}".format(k))
+
+                    k, v = k.split('#')
+                    tags.update(vv.strip() for vv in v.split(','))
+
+                tags.add(re.split('[<=>]', k)[0])
+                for t in tags:
+                    extra_deps[t].add(k)
+
+        # add tag `all` at the end
+        if add_all:
+            extra_deps['all'] = set(vv for v in extra_deps.values() for vv in v)
+
+    return extra_deps
+
+
+extras_require = get_extra_requires("requirements-extra.txt")
+
+# --- update `extras_conda` to include packages only available in PyPI ---
+
+setup(
+    name='ltbams',
+    version=versioneer.get_version(),
+    cmdclass=versioneer.get_cmdclass(),
+    description="Python software for scheduling modeling and co-simulation with dynanics.",
+    long_description=readme,
+    long_description_content_type='text/markdown',
+    author="Jinning Wang",
+    author_email='[email protected]',
+    url='https://github.com/CURENT/ams',
+    packages=find_packages(exclude=[]),
+    entry_points={
+        'console_scripts': [
+            'ams = ams.cli:main',
+        ],
+    },
+    include_package_data=True,
+    package_data={
+        'ltbams': [
+            # When adding files here, remember to update MANIFEST.in as well,
+            # or else they will not be included in the distribution on PyPI!
+            # 'path/to/data_file',
+        ]
+    },
+    install_requires=parse_requires('requirements.txt'),
+    extras_require=extras_require,
+    license="GNU Public License v3",
+    classifiers=[
+        'Development Status :: 4 - Beta',
+        'Natural Language :: English',
+        'Programming Language :: Python :: 3',
+        'License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)',
+        'Environment :: Console',
+    ],
+)