Switch from setup.py to hatch

pyproject.toml

@@ -0,0 +1,45 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "django-enumfields"
+dynamic = ["version"]
+description = "Real Python Enums for Django."
+readme = "README.rst"
+license = "MIT"
+authors = [
+    { name = "HZDG", email = "webmaster@hzdg.com" },
+]
+maintainers = [
+    { name = "Aarni Koskela", email = "akx@iki.fi" },
+]
+classifiers = [
+    "Environment :: Web Environment",
+    "Framework :: Django",
+    "Framework :: Django :: 2.2",
+    "Framework :: Django :: 3.0",
+    "Framework :: Django :: 3.1",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.5",
+    "Programming Language :: Python :: 3.6",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Topic :: Internet :: WWW/HTTP",
+]
+
+[project.urls]
+Homepage = "https://github.com/hzdg/django-enumfields"
+
+[tool.hatch.version]
+path = "enumfields/__init__.py"
+
+[tool.hatch.build.targets.sdist]
+include = [
+    "/enumfields",
+]

setup.cfg

@@ -1,6 +1,3 @@
-[bdist_wheel]
-python-tag = py3
-
 [pep8]
 max-line-length = 120
 exclude = *migrations*