MAINT: bump required pyproject-metadata version to 0.9.0

Having PEP 639 metadata supported or not based on the version of a
transitive dependency would not make for a great user experience.
Supporting PEP 639 metadata requires pyproject-metadata 0.9.0.

Author: dnicolodi

.github/workflows/tests.yml

@@ -98,10 +98,6 @@ jobs:
           - os: windows-latest
             python: '3.12'
             meson: '@git+https://github.com/mesonbuild/meson.git'
-          # Test with oldest supported pyproject-metadata
-          - os: ubuntu-latest
-            python: '3.12'
-            pyproject_metadata: '==0.8.0'
 
     steps:
       - name: Checkout

pyproject.toml

@@ -9,7 +9,7 @@ requires = [
   'meson >= 0.64.0; python_version < "3.12"',
   'meson >= 1.2.3; python_version >= "3.12"',
   'packaging >= 19.0',
-  'pyproject-metadata >= 0.8.0',
+  'pyproject-metadata >= 0.9.0',
   'tomli >= 1.0.0; python_version < "3.11"',
 ]
 
@@ -37,7 +37,7 @@ dependencies = [
   'meson >= 0.64.0; python_version < "3.12"',
   'meson >= 1.2.3; python_version >= "3.12"',
   'packaging >= 19.0',
-  'pyproject-metadata >= 0.8.0',
+  'pyproject-metadata >= 0.9.0',
   'tomli >= 1.0.0; python_version < "3.11"',
 ]
 

tests/conftest.py

@@ -18,16 +18,13 @@
 
 import packaging.metadata
 import packaging.version
-import pyproject_metadata
 import pytest
 
 import mesonpy
 
 from mesonpy._util import chdir
 
 
-PYPROJECT_METADATA_VERSION = tuple(map(int, pyproject_metadata.__version__.split('.')[:2]))
-
 _meson_ver_str = subprocess.run(['meson', '--version'], check=True, stdout=subprocess.PIPE, text=True).stdout
 MESON_VERSION = tuple(map(int, _meson_ver_str.split('.')[:3]))
 

tests/test_project.py

@@ -19,7 +19,7 @@
 
 import mesonpy
 
-from .conftest import MESON_VERSION, PYPROJECT_METADATA_VERSION, in_git_repo_context, metadata, package_dir
+from .conftest import MESON_VERSION, in_git_repo_context, metadata, package_dir
 
 
 def test_unsupported_python_version(package_unsupported_python_version):
@@ -40,7 +40,6 @@ def test_missing_dynamic_version(package_missing_dynamic_version):
             pass
 
 
-@pytest.mark.skipif(PYPROJECT_METADATA_VERSION < (0, 9), reason='pyproject-metadata too old')
 @pytest.mark.skipif(MESON_VERSION < (1, 6, 0), reason='meson too old')
 @pytest.mark.filterwarnings('ignore:canonicalization and validation of license expression')
 def test_meson_build_metadata(tmp_path):
@@ -67,7 +66,6 @@ def test_meson_build_metadata(tmp_path):
     '''))
 
 
-@pytest.mark.skipif(PYPROJECT_METADATA_VERSION < (0, 9), reason='pyproject-metadata too old')
 @pytest.mark.skipif(MESON_VERSION < (1, 6, 0), reason='meson too old')
 @pytest.mark.filterwarnings('ignore:canonicalization and validation of license expression')
 def test_dynamic_license(tmp_path):
@@ -96,7 +94,6 @@ def test_dynamic_license(tmp_path):
     '''))
 
 
-@pytest.mark.skipif(PYPROJECT_METADATA_VERSION < (0, 9), reason='pyproject-metadata too old')
 @pytest.mark.skipif(MESON_VERSION < (1, 6, 0), reason='meson too old')
 @pytest.mark.filterwarnings('ignore:canonicalization and validation of license expression')
 def test_dynamic_license_list(tmp_path):

tests/test_sdist.py

@@ -32,15 +32,9 @@ def test_pep621_metadata(sdist_full_metadata):
         sdist_pkg_info = sdist.extractfile('full_metadata-1.2.3/PKG-INFO').read()
 
     meta = metadata(sdist_pkg_info)
-
-    # pyproject-metadata prior to 0.9.0 strips trailing newlines
+    # Including the trailing newline in the expected value is inconvenient.
     meta['license'] = meta['license'].rstrip()
 
-    # pyproject-metadata 0.9.0 and later does not emit Home-Page
-    meta.pop('home_page', None)
-    # nor normalizes Project-URL keys
-    meta['project_urls'] = {k.lower(): v for k, v in meta['project_urls'].items()}
-
     assert meta == metadata(textwrap.dedent('''\
         Metadata-Version: 2.1
         Name: full-metadata

tests/test_wheel.py

@@ -16,7 +16,7 @@
 
 import mesonpy
 
-from .conftest import MESON_VERSION, PYPROJECT_METADATA_VERSION, adjust_packaging_platform_tag, metadata
+from .conftest import MESON_VERSION, adjust_packaging_platform_tag, metadata
 
 
 EXT_SUFFIX = sysconfig.get_config_var('EXT_SUFFIX')
@@ -136,7 +136,6 @@ def test_contents_license_file(wheel_license_file):
     assert artifact.read('license_file-1.0.0.dist-info/LICENSE.custom').rstrip() == b'Hello!'
 
 
-@pytest.mark.xfail(PYPROJECT_METADATA_VERSION < (0, 9), reason='pyproject-metadata too old')
 @pytest.mark.filterwarnings('ignore:canonicalization and validation of license expression')
 def test_license_pep639(wheel_license_pep639):
     artifact = wheel.wheelfile.WheelFile(wheel_license_pep639)