implement pyproject.toml for dependencies

pyproject.toml

@@ -1,6 +1,70 @@
+[project]
+name = "darker"
+description = "Apply Black formatting only in regions changed since last commit"
+authors = ["Antti Kaihola [email protected]"]
+license = "BSD"
+requires-python = ">=3.8"
+# NOTE: remember to keep `.github/workflows/python-package.yml` in sync
+#       with the minimum required Python version
+classifiers = [
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12"
+]
+[project.urls]
+"Source Code" = "https://github.com/akaihola/darker"
+"Change Log" = "https://github.com/akaihola/darker/blob/master/CHANGES.rst"
+"News" = "https://github.com/akaihola/darker/discussions/categories/announcements"
+
 [build-system]
 # Minimum requirements for the build system to execute.
 requires = ["setuptools", "wheel"]  # PEP 508 specifications.
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools.package-data]
+darker = ["py.typed", "pyi"]
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[project.dependencies]
+# NOTE: remember to keep `constraints-oldest.txt` in sync with these
+black = ">=22.3.0"
+darkgraylib = "~=2.0.1"
+toml = ">=0.10.0"
+typing_extensions = ">=4.0.1"
+
+[project.optional-dependencies]
+flynt = ["flynt>=0.76"]
+isort = ["isort>=5.0.1"]
+color = ["Pygments>=2.4.0"]
+test = [
+    "black>=22.3.0",
+    "cryptography>=3.3.2",
+    "defusedxml>=0.7.1",
+    "flynt>=0.76",
+    "isort>=5.0.1",
+    "mypy>=0.990",
+    "pathspec",
+    "pydocstyle",
+    "pygments",
+    "pylint<=3.2.7",
+    "pytest>=6.2.0",
+    "pytest-kwparametrize>=0.0.3",
+    "regex>=2021.4.4",
+    "requests_cache>=0.7",
+    "ruamel.yaml>=0.17.21",
+    "ruff>=0.0.292",
+    "twine>=2.0.0",
+    "types-requests>=2.27.9",
+    "types-toml>=0.10.4",
+    "urllib3>=1.25.9",
+    "wheel>=0.21.0"
+]
+release = ["darkgray-dev-tools~=0.1.1"]
 
 [tool.black]
 # Darker makes Black read its configuration from the file indicated by the `--config`

setup.cfg

@@ -26,23 +26,6 @@ include_package_data = True
 package_dir =
     =src
 packages = find:
-install_requires =
-    # NOTE: remember to keep `constraints-oldest.txt` in sync with these
-    black>=22.3.0
-    darkgraylib~=2.0.1
-    toml>=0.10.0
-    typing_extensions>=4.0.1
-# NOTE: remember to keep `.github/workflows/python-package.yml` in sync
-#       with the minimum required Python version
-python_requires = >=3.8
-
-[options.packages.find]
-where = src
-
-[options.package_data]
-darker =
-  py.typed
-  .pyi
 
 [options.entry_points]
 darker.formatter =
@@ -51,39 +34,6 @@ darker.formatter =
 console_scripts =
     darker = darker.__main__:main_with_error_handling
 
-[options.extras_require]
-flynt =
-    flynt>=0.76
-isort =
-    isort>=5.0.1
-color =
-    Pygments>=2.4.0
-test =
-    # NOTE: remember to keep `constraints-oldest.txt` in sync with these
-    black>=22.3.0
-    cryptography>=3.3.2  # through twine, fixes CVE-2020-36242
-    defusedxml>=0.7.1
-    flynt>=0.76
-    isort>=5.0.1
-    mypy>=0.990
-    pathspec  # to test `gen_python_files` in `test_black_diff.py`
-    pydocstyle
-    pygments
-    pylint<=3.2.7  # pylint 3.3.0 dropped Python 3.8 support
-    pytest>=6.2.0
-    pytest-kwparametrize>=0.0.3
-    regex>=2021.4.4
-    requests_cache>=0.7
-    ruamel.yaml>=0.17.21
-    ruff>=0.0.292
-    twine>=2.0.0
-    types-requests>=2.27.9
-    types-toml>=0.10.4
-    urllib3>=1.25.9  # through requests-cache and twine, fixes CVE-2020-26137
-    wheel>=0.21.0
-release =
-    darkgray-dev-tools~=0.1.1
-
 [flake8]
 # Line length according to Black rules
 max-line-length = 88