Add setuptools to the runtime dependencies (fix RHBZ#2268986)

[skip changelog]

flexcache-0.2-setuptools.patch

@@ -0,0 +1,12 @@
+diff -Naur flexcache-0.2-original/setup.cfg flexcache-0.2/setup.cfg
+--- flexcache-0.2-original/setup.cfg	2022-02-27 23:12:46.468990600 -0500
++++ flexcache-0.2/setup.cfg	2024-03-11 08:32:50.998736526 -0400
+@@ -26,6 +26,8 @@
+ zip_safe = True
+ include_package_data = True
+ python_requires = >=3.7
++install_requires = 
++	setuptools
+ setup_requires = 
+ 	setuptools
+ 	setuptools_scm

python-flexcache.spec

@@ -7,6 +7,15 @@ License:        BSD-3-Clause
 URL:            https://github.com/hgrecco/flexcache
 Source:         %{pypi_source flexcache}
 
+# Add setuptools to the runtime dependencies
+#
+# This is needed for the “import pkg_resources” in the top-level
+# __init__.py.
+#
+# Downstream-only because version 0.3 of flexcache does not use pkg_resources,
+# so this is a temporary patch for version 0.2 only.
+Patch:          flexcache-0.2-setuptools.patch
+
 BuildArch:      noarch
 
 BuildRequires:  python3-devel
@@ -25,9 +34,9 @@ Summary:        %{summary}
 
 
 %prep
-%autosetup -n flexcache-%{version}
+%autosetup -n flexcache-%{version} -p1
 # https://docs.fedoraproject.org/en-US/packaging-guidelines/Python/#_linters
-sed -r -i 's/^([[:blank:]]*)("pytest-cov")/\1# \2/' pyproject.toml
+sed -r -i 's/^([[:blank:]]*)\b(pytest-cov)\b/\1# \2/' setup.cfg
 
 
 %generate_buildrequires