rpm: update packaging for pyproject.toml

and argparse-manpage

rpm/python-gwdatafind.spec

-%define srcname gwdatafind
-%define version 1.2.0
-%define release 1
+%global srcname gwdatafind
+%global version 1.2.0
+%global release 1
 
 Name:      python-%{srcname}
 Version:   %{version}
@@ -13,26 +13,23 @@ Source0:   %pypi_source
 Packager:  Duncan Macleod <duncan.macleod@ligo.org>
 
 BuildArch: noarch
+Prefix:    %{_prefix}
 
 # build requirements
-BuildRequires: python%{python3_pkgversion}-devel >= 3.6
-BuildRequires: python%{python3_pkgversion}-pip
-BuildRequires: python%{python3_pkgversion}-setuptools
-BuildRequires: python%{python3_pkgversion}-wheel
+BuildRequires: python3-devel >= 3.6
+BuildRequires: python3dist(pip)
+BuildRequires: python3dist(setuptools)
+BuildRequires: python3dist(wheel)
 
 # man pages
-%if 0%{?rhel} == 0 || 0%{?rhel} >= 8
-BuildRequires: argparse-manpage >= 3
-%endif
-BuildRequires: python%{python3_pkgversion}-igwn-auth-utils >= 0.3.1
-BuildRequires: python%{python3_pkgversion}-ligo-segments
+BuildRequires: python3dist(argparse-manpage)
+BuildRequires: python3dist(igwn-auth-utils) >= 0.3.1
+BuildRequires: python3dist(ligo-segments)
 
 # testing dependencies
 BuildRequires: man-db
-%if 0%{?rhel} == 0 || 0%{?rhel} >= 8
-BuildRequires: python%{python3_pkgversion}-pytest >= 2.8.0
-BuildRequires: python%{python3_pkgversion}-requests-mock
-%endif
+BuildRequires: python3dist(pytest) >= 2.8.0
+BuildRequires: python3dist(requests-mock)
 
 # -- src.rpm
 
@@ -46,7 +43,7 @@ GWDataFind client API.
 
 %package -n %{srcname}
 Summary: %{summary}
-Requires: python%{python3_pkgversion}-%{srcname} = %{version}-%{release}
+Requires: python3-%{srcname} = %{version}-%{release}
 Conflicts: glue < 1.61.0
 Conflicts: python2-gwdatafind < 1.0.4-3
 %description -n %{srcname}
@@ -54,73 +51,94 @@ The DataFind service allows users to query for the location of
 Gravitational-Wave Frame (GWF) files containing data from the current
 gravitational-wave detectors. This package provides the python interface
 libraries.
+%files -n %{srcname}
+%license LICENSE
+%doc README.md
+%{_bindir}/gw_data_find
+%{_mandir}/man1/gw_data_find.1*
 
 # -- python3x-gwdatafind
 
-%package -n python%{python3_pkgversion}-%{srcname}
+%package -n python3-%{srcname}
 Summary:  Python %{python3_version} library for the GWDataFind service
-Requires: python%{python3_pkgversion}-igwn-auth-utils >= 0.3.1
-Requires: python%{python3_pkgversion}-ligo-segments
-%{?python_provide:%python_provide python%{python3_pkgversion}-%{srcname}}
-%description -n python%{python3_pkgversion}-%{srcname}
+Requires: python3dist(igwn-auth-utils) >= 0.3.1
+Requires: python3dist(ligo-segments)
+%description -n python3-%{srcname}
 The DataFind service allows users to query for the location of
 Gravitational-Wave Frame (GWF) files containing data from the current
 gravitational-wave detectors. This package provides the
 Python %{python3_version} interface libraries.
+%files -n python3-%{srcname}
+%license LICENSE
+%doc README.md
+%{python3_sitelib}/*
 
 # -- build steps
 
 %prep
 %autosetup -n %{srcname}-%{version}
+# for RHEL < 9 hack together setup.{cfg,py} for old setuptools
+%if 0%{?rhel} && 0%{?rhel} < 10
+cat > setup.cfg << SETUP_CFG
+[metadata]
+name = %{srcname}
+version = %{version}
+author-email = %{packager}
+description = %{summary}
+license = %{license}
+license_files = LICENSE
+url = %{url}
+[options]
+packages = find:
+python_requires = >=3.6
+install_requires =
+  igwn-auth-utils >= 0.3.1
+  ligo-segments
+[options.entry_points]
+console_scripts =
+  gw_data_find = gwdatafind.__main__:main
+[build_manpages]
+manpages =
+  man/gw_data_find.1:prog=gwdatafind:function=command_line:module=gwdatafind.__main__
+SETUP_CFG
+%endif
+%if %{undefined pyproject_wheel}
+cat > setup.py << SETUP_PY
+from setuptools import setup
+setup()
+SETUP_PY
+%endif
 
 %build
+%if %{defined pyproject_wheel}
+%pyproject_wheel
+%else
 %py3_build_wheel
+%endif
+# generate manuals
+%python3 -c "from setuptools import setup; setup()" \
+  --command-packages=build_manpages \
+  build_manpages \
+;
 
 %install
-%py3_install_wheel gwdatafind-%{version}-*.whl
-%if 0%{?rhel} == 0 || 0%{?rhel} >= 8
-mkdir -vp %{buildroot}%{_mandir}/man1
-env PYTHONPATH="%{buildroot}%{python3_sitelib}" \
-argparse-manpage \
-    --description "discover available GW data" \
-    --function command_line \
-    --module gwdatafind.__main__ \
-    --output %{buildroot}%{_mandir}/man1/gw_data_find.1 \
-    --prog gw_data_find \
-    --project-name %{srcname} \
-    --version %{version} \
-    --url %{url} \
-;
+%if %{defined pyproject_install}
+%pyproject_install
+%else
+%py3_install_wheel *.whl
 %endif
+%__mkdir -p -v %{buildroot}%{_mandir}/man1
+%__install -m 644 -p -v man/*.1* %{buildroot}%{_mandir}/man1/
 
 %check
 export PYTHONPATH="%{buildroot}%{python3_sitelib}"
 # sanity checks
 %{__python3} -m gwdatafind --help
 %{buildroot}%{_bindir}/gw_data_find --help
-
-%if 0%{?rhel} == 0 || 0%{?rhel} >= 8
+# run test suite
+%{pytest} --pyargs gwdatafind
 # test man pages
 env MANPATH="%{buildroot}%{_mandir}" man -P cat gw_data_find
-# run test suite
-%{__python3} -m pytest --pyargs gwdatafind
-%endif
-
-%clean
-rm -rf $RPM_BUILD_ROOT
-
-%files -n %{srcname}
-%license LICENSE
-%doc README.md
-%{_bindir}/gw_data_find
-%if 0%{?rhel} == 0 || 0%{?rhel} >= 8
-%{_mandir}/man1/gw_data_find.1*
-%endif
-
-%files -n python%{python3_pkgversion}-%{srcname}
-%license LICENSE
-%doc README.md
-%{python3_sitelib}/*
 
 # -- changelog