Port to pyproject-rpm-macros (“new Python guidelines”)

python-ruamel-yaml-clib.spec

@@ -17,14 +17,16 @@ Patch:          fix-typecasts-s390x.patch
 
 BuildRequires:  gcc
 
-%description
-It is the C based reader/scanner and emitter for ruamel.yaml.
+%global _description %{expand:
+It is the C based reader/scanner and emitter for ruamel.yaml.}
+
+%description %{_description}
 
 %package -n     python3-ruamel-yaml-clib
 Summary:        %{summary}
+
 BuildRequires:  python3-devel
-BuildRequires:  python3-setuptools
-BuildRequires:  python3-Cython
+BuildRequires:  %{py3_dist Cython}
 
 # Unfortunately, the circular dependency is intentional; the clib extension
 # packaged here imports from ruamel.yaml, which in turn uses the extension for
@@ -48,8 +50,9 @@ Requires:       python3-ruamel-yaml
 # Version number from VERSION in config.h:
 Provides:       bundled(libyaml) = 0.1.7
 
-%description -n python3-ruamel-yaml-clib
-It is the C based reader/scanner and emitter for ruamel.yaml.
+%py_provides python3-ruamel.yaml.clib
+
+%description -n python3-ruamel-yaml-clib %{_description}
 
 %prep
 %autosetup -n ruamel-yaml-clib-code-%{commit}
@@ -57,6 +60,11 @@ It is the C based reader/scanner and emitter for ruamel.yaml.
 rm -v $(grep -rl '/\* Generated by Cython')
 cp -p '%{SOURCE1}' .
 
+%generate_buildrequires
+# Upstream has a tox.ini, but it is for a build-and-install check, not a test
+# suite, so we do not use it to generate dependencies (-t).
+%pyproject_buildrequires
+
 %build
 # cython refuses to cythonize a file in a directory that cannot be a Python module ¯\_(ツ)_/¯
 mkdir ruamel.yaml.clib
@@ -65,19 +73,21 @@ cythonize -3 ruamel.yaml.clib/*.pyx
 mv ruamel.yaml.clib/* .
 rmdir ruamel.yaml.clib
 
-%py3_build
+%pyproject_wheel
 
 %install
-%{python3} setup.py install --single-version-externally-managed --skip-build --root $RPM_BUILD_ROOT
+%pyproject_install
+%pyproject_save_files _ruamel_yaml
 
 %check
 %py3_check_import _ruamel_yaml
 
-%files -n python3-ruamel-yaml-clib
+%files -n python3-ruamel-yaml-clib -f %{pyproject_files}
+# pyproject_files handles LICENSE; verify with “rpm -qL -p …”
+# Remove the following once we no longer have a separate LICENSE-libyaml:
 %license LICENSE LICENSE-libyaml
+
 %doc README.rst
-%{python3_sitearch}/_ruamel_yaml.cpython-*
-%{python3_sitearch}/ruamel.yaml.clib-%{version}-py%{python3_version}.egg-info
 
 %changelog
 * Wed May 03 2023 Benjamin A. Beasley <code@musicinmybrain.net> - 0.2.6-5
@@ -89,6 +99,7 @@ rmdir ruamel.yaml.clib
 - Update URL (close RHBZ#1840610)
 - Add an import-only “smoke test”
 - Properly handle libyaml bundling
+- Port to pyproject-rpm-macros (“new Python guidelines”)
 
 * Fri Jan 20 2023 Fedora Release Engineering <releng@fedoraproject.org> - 0.2.6-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild