Migrated to dependency groups

Also require a newer `packaging` to pass the tests.

Author: agronholm

.github/workflows/test.yml

@@ -21,9 +21,9 @@ jobs:
         - os: windows-latest
           python-version: "3.9"
         - os: macos-latest
-          python-version: "3.13"
+          python-version: "3.14"
         - os: windows-latest
-          python-version: "3.13"
+          python-version: "3.14"
         - os: macos-latest
           python-version: "pypy-3.11"
     runs-on: ${{ matrix.os }}
@@ -36,10 +36,8 @@ jobs:
         allow-prereleases: true
         cache: pip
         cache-dependency-path: pyproject.toml
-    - name: Install the project
-      run: pip install --no-binary=wheel .
-    - name: Install test dependencies
-      run: pip install .[test] coverage[toml]
+    - name: Install the project and its test dependencies
+      run: pip install --group test coverage[toml] .
     - name: Include SDist check dependencies
       if: matrix.python-version == '3.13'
       run: pip install build flit

pyproject.toml

@@ -41,8 +41,9 @@ wheel = "wheel._commands:main"
 [project.entry-points."distutils.commands"]
 bdist_wheel = "wheel.bdist_wheel:bdist_wheel"
 
-[project.optional-dependencies]
+[dependency-groups]
 test = [
+    "packaging >= 26.0",
     "pytest >= 6.0.0",
     "setuptools >= 77",
 ]
@@ -126,7 +127,7 @@ skip_missing_interpreters = true
 depends = ["lint"]
 package = "wheel"
 commands = [["pytest", { replace = "posargs", extend = true }]]
-extras = ["test"]
+dependency_groups = ["test"]
 set_env = { PYTHONWARNDEFAULTENCODING = "1" }
 
 [tool.tox.env.lint]

tests/test_metadata.py

@@ -62,7 +62,7 @@ def test_pkginfo_to_metadata(tmp_path: Path) -> None:
 
 [:sys_platform=="win32"]
 pywin32
-foo @http://host/foo.zip
+foo @ http://host/foo.zip
 
 [faster-signatures]
 ed25519ll