pygobject: drop Python 3.9 support.

All users on-tree (gimp, libaccounts, nicotineplus) are 3.10 only
already.

dev-python/pygobject/pygobject-3.44.1.recipe

@@ -4,7 +4,7 @@ such as GTK, GStreamer, WebKitGTK, GLib, GIO and many more."
 HOMEPAGE="https://wiki.gnome.org/Projects/PyGObject"
 COPYRIGHT="2023 Christoph Reiter"
 LICENSE="GNU LGPL v2"
-REVISION="3"
+REVISION="4"
 SOURCE_URI="https://download.gnome.org/sources/pygobject/3.44/pygobject-$portVersion.tar.xz"
 CHECKSUM_SHA256="3c6805d1321be90cc32e648215a562430e0d3d6edcda8f4c5e7a9daffcad5710"
 
@@ -31,11 +31,10 @@ BUILD_PREREQUIRES="
 	cmd:pkg_config$secondaryArchSuffix
 	"
 
-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
@@ -60,15 +59,16 @@ done
 
 INSTALL()
 {
-	for i in "${!PYTHON_PACKAGES[@]}"; do
-		pythonPackage=${PYTHON_PACKAGES[i]}
-		pythonVersion=${PYTHON_VERSIONS[$i]}
+	for pythonVersion in ${PYTHON_VERSIONS[@]}; do
+		pythonPackage=python${pythonVersion//.}
 
 		python=python$pythonVersion
 		installLocation=$prefix/lib/$python/vendor-packages/
 		export PYTHONPATH=$installLocation:$PYTHONPATH
+
 		mkdir -p $installLocation
 		rm -rf build
+
 		meson build --buildtype=release \
 			--prefix=$prefix \
 			--includedir=$includeDir \