add reqs, fix setup

Author: bwengals

requirements.txt

@@ -0,0 +1 @@
+pymc>=4.0.0b1

setup.py

@@ -0,0 +1,85 @@
+#   Copyright 2022 The PyMC Developers
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+import re
+
+from codecs import open
+from os.path import dirname, join, realpath
+
+from setuptools import find_packages, setup
+
+DISTNAME = "pymc_experimental"
+DESCRIPTION = "A home for new additions to PyMC, which may include unusual probability distribitions, advanced model fitting algorithms, or any code that may be inappropriate to include in the pymc repository, but may want to be made available to users."
+AUTHOR = "PyMC Developers"
+AUTHOR_EMAIL = "[email protected]"
+URL = "http://github.com/pymc-devs/pymc-experimental"
+LICENSE = "Apache License, Version 2.0"
+
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "License :: OSI Approved :: Apache Software License",
+    "Intended Audience :: Science/Research",
+    "Topic :: Scientific/Engineering",
+    "Topic :: Scientific/Engineering :: Mathematics",
+    "Operating System :: OS Independent",
+]
+
+PROJECT_ROOT = dirname(realpath(__file__))
+
+# Get the long description from the README file
+with open(join(PROJECT_ROOT, "README.md"), encoding="utf-8") as buff:
+    LONG_DESCRIPTION = buff.read()
+
+REQUIREMENTS_FILE = join(PROJECT_ROOT, "requirements.txt")
+
+with open(REQUIREMENTS_FILE) as f:
+    install_reqs = f.read().splitlines()
+
+
+def get_version():
+    VERSIONFILE = join("pymc_experimental", "__init__.py")
+    lines = open(VERSIONFILE).readlines()
+    version_regex = r"^__version__ = ['\"]([^'\"]*)['\"]"
+    for line in lines:
+        mo = re.search(version_regex, line, re.M)
+        if mo:
+            return mo.group(1)
+    raise RuntimeError(f"Unable to find version in {VERSIONFILE}.")
+
+
+if __name__ == "__main__":
+    setup(
+        name=DISTNAME,
+        version=get_version(),
+        maintainer=AUTHOR,
+        maintainer_email=AUTHOR_EMAIL,
+        description=DESCRIPTION,
+        license=LICENSE,
+        url=URL,
+        long_description=LONG_DESCRIPTION,
+        long_description_content_type="text/x-rst",
+        packages=find_packages(),
+        # because of an upload-size limit by PyPI, we're temporarily removing docs from the tarball.
+        # Also see MANIFEST.in
+        # package_data={'docs': ['*']},
+        include_package_data=True,
+        classifiers=classifiers,
+        python_requires=">=3.7",
+        install_requires=install_reqs,
+    )