Modernize Python metadata (#791)

* src/pyscipopt/_version.py: New, single-source the version from here

* pyproject.toml: Move metadata here from setup.py

---------

Co-authored-by: Mohammed Ghannam <mohammad.m.ghannam@gmail.com>

Author: mkoeppe

pyproject.toml

@@ -1,3 +1,37 @@
 [build-system]
 requires = ['setuptools', 'cython >=0.21']
 build-backend = "setuptools.build_meta"
+
+[project]
+name = "PySCIPOpt"
+description = "Python interface and modeling environment for SCIP"
+authors = [
+    {name = "Zuse Institute Berlin", email = "scip@zib.de"},
+]
+dependencies = []
+requires-python = ">=3.8"
+readme = "README.md"
+license = {text = "MIT"}
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Education",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Cython",
+    "Programming Language :: Python :: 3",
+    "Topic :: Scientific/Engineering :: Mathematics",
+]
+dynamic = ["version"]
+
+[project.urls]
+Homepage = "https://github.com/SCIP-Interfaces/PySCIPOpt"
+
+[tool.pytest.ini_options]
+norecursedirs = ["check"]
+testpaths = ["tests"]
+
+[tool.setuptools]
+include-package-data = false
+
+[tool.setuptools.dynamic]
+version = {attr = "pyscipopt._version.__version__"}

setup.cfg

@@ -1,6 +1,2 @@
-[tool:pytest]
-norecursedirs = check
-testpaths = tests
-
 [bdist_wheel]
 universal = 1

setup.py

@@ -69,11 +69,6 @@
 
 packagedir = os.path.join("src", "pyscipopt")
 
-with open(os.path.join(packagedir, "__init__.py"), "r") as initfile:
-    version = re.search(
-        r'^__version__\s*=\s*[\'"]([^\'"]*)[\'"]', initfile.read(), re.MULTILINE
-    ).group(1)
-
 try:
     from Cython.Build import cythonize
 except ImportError as err:
@@ -106,28 +101,7 @@
 if use_cython:
     extensions = cythonize(extensions, compiler_directives={"language_level": 3, "linetrace": on_github_actions})
 
-with open("README.md") as f:
-    long_description = f.read()
-
 setup(
-    name="PySCIPOpt",
-    version=version,
-    description="Python interface and modeling environment for SCIP",
-    long_description=long_description,
-    long_description_content_type="text/markdown",
-    url="https://github.com/SCIP-Interfaces/PySCIPOpt",
-    author="Zuse Institute Berlin",
-    author_email="scip@zib.de",
-    license="MIT",
-    classifiers=[
-        "Development Status :: 4 - Beta",
-        "Intended Audience :: Science/Research",
-        "Intended Audience :: Education",
-        "License :: OSI Approved :: MIT License",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Cython",
-        "Topic :: Scientific/Engineering :: Mathematics",
-    ],
     ext_modules=extensions,
     packages=["pyscipopt"],
     package_dir={"pyscipopt": packagedir},

src/pyscipopt/__init__.py

@@ -1,4 +1,4 @@
-__version__ = '4.4.0'
+from ._version import __version__
 
 # required for Python 3.8 on Windows
 import os

src/pyscipopt/_version.py

@@ -0,0 +1 @@
+__version__ = '4.4.0'