Replace setup.py with declarative pyproject.toml packaging

.github/workflows/test.yml

@@ -28,10 +28,14 @@ jobs:
       - name: Run the Test Suite
         run: |-
           set -x
-          pip install -U setuptools  # for Python >=3.12
-          pip install pytest
-          python setup.py sdist
+          python -m pip install build pytest
+          python -m build
           cd dist/
           tar xf hsluv-*.tar.gz
           cd hsluv-*/
+          python -m pip install .
           pytest -v tests/
+          cd ..
+          python -m pip install --force-reinstall hsluv-*.whl
+          python -c 'import hsluv; from importlib.metadata import version; assert hsluv.__version__ == version("hsluv")'
+          python -m unittest discover -s hsluv-*/tests -v

README.md

@@ -37,10 +37,9 @@ For HPLuv (the pastel variant), use `hpluv_to_hex`, `hpluv_to_rgb`, `hex_to_hplu
 
 ## Testing
 
-Run `python setup.py test`.
+Run `python -m unittest discover -v`.
 
 ## Authors
 
 * Robert McGinley ([mcginleyr1](https://github.com/mcginleyr1))
 * Alexei Boronine ([boronine](https://github.com/boronine))
-

pyproject.toml

@@ -0,0 +1,38 @@
+[build-system]
+requires = ["setuptools>=77.0.3"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "hsluv"
+dynamic = ["version"]
+description = "Human-friendly HSL"
+readme = "README.md"
+license = "MIT"
+license-files = ["LICENSE.txt"]
+authors = [{email = "[email protected]"}]
+requires-python = ">=3.11"
+keywords = ["color", "hsl", "cie", "cieluv", "colorwheel", "hsluv", "hpluv"]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Operating System :: OS Independent",
+    "Topic :: Software Development",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: 3.15",
+    "Programming Language :: Python :: 3 :: Only",
+]
+
+[project.urls]
+Homepage = "https://www.hsluv.org"
+"Bug Tracker" = "https://github.com/hsluv/hsluv-python/issues"
+"Source Code" = "https://github.com/hsluv/hsluv-python"
+
+[tool.setuptools]
+py-modules = ["hsluv"]
+
+[tool.setuptools.dynamic]
+version = {attr = "hsluv.__version__"}