astroid: drop Python 3.9 support.

Only user on-tree of this is `asttokens`, and we only package that
for 3.10 at the moment.

dev-python/astroid/astroid-2.15.5.recipe

@@ -10,7 +10,7 @@ build partial trees by inspecting living objects."
 HOMEPAGE="https://github.com/PyCQA/astroid"
 COPYRIGHT="2003-2023, Logilab, PyCQA and contributors"
 LICENSE="GNU LGPL v2.1"
-REVISION="2"
+REVISION="3"
 SOURCE_URI="https://pypi.io/packages/source/a/$portName/$portName-$portVersion.tar.gz"
 CHECKSUM_SHA256="1039262575027b441137ab4a62a793a9b43defb42c32d5670f38686207cd780f"
 
@@ -27,11 +27,10 @@ BUILD_REQUIRES="
 	haiku_devel
 	"
 
-PYTHON_PACKAGES=(python39 python310)
-PYTHON_VERSIONS=(3.9 3.10)
-for i in "${!PYTHON_PACKAGES[@]}"; do
-	pythonPackage=${PYTHON_PACKAGES[i]}
-	pythonVersion=${PYTHON_VERSIONS[i]}
+PYTHON_VERSIONS=(3.10)
+
+for pythonVersion in ${PYTHON_VERSIONS[@]}; do
+	pythonPackage=python${pythonVersion//.}
 
 	eval "PROVIDES_$pythonPackage=\"
 		${portName}_$pythonPackage = $portVersion
@@ -60,13 +59,14 @@ done
 
 INSTALL()
 {
-	for i in "${!PYTHON_PACKAGES[@]}"; do
-		python=python${PYTHON_VERSIONS[i]}
+	for pythonVersion in ${PYTHON_VERSIONS[@]}; do
+		python=python$pythonVersion
+		pythonPackage=python${pythonVersion//.}
 
 		$python -m build --wheel --skip-dependency-check --no-isolation
 		$python -m installer -p $prefix dist/*.whl
 
-		packageEntries ${PYTHON_PACKAGES[i]} \
+		packageEntries $pythonPackage \
 			$prefix/lib/python*
 	done
 }
@@ -86,8 +86,8 @@ TEST()
 	rm tests/test_regrtest.py
 	rm tests/test_scoped_nodes.py
 
-	for i in "${!PYTHON_VERSIONS[@]}"; do
-		python=python${PYTHON_VERSIONS[i]}
+	for pythonVersion in ${PYTHON_VERSIONS[@]}; do
+		python=python$pythonVersion
 		$python -m pytest -m "not acceptance" tests
 	done