libxml2: fix name of the python bindings package.

(to explicitly tell which Python version it targets).

While at it, make use of dot in the python package name.

Related to #12949.

dev-libs/libxml2/libxml2-2.12.10.recipe

@@ -10,7 +10,7 @@ available in other environments."
 HOMEPAGE="http://www.xmlsoft.org/"
 COPYRIGHT="1998-2012 Daniel Veillard.  All Rights Reserved."
 LICENSE="MIT"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://download.gnome.org/sources/libxml2/2.12/libxml2-$portVersion.tar.xz"
 CHECKSUM_SHA256="c3d8c0c34aa39098f66576fe51969db12a5100b956233dc56506f7a8679be995"
 SOURCE_URI_2="https://www.w3.org/XML/Test/xmlts20130923.tar.gz"
@@ -31,6 +31,9 @@ else
 	fi
 fi
 
+pythonVersion=3.10
+pythonPackage=python${pythonVersion//.}
+
 PROVIDES="
 	libxml2$secondaryArchSuffix = $portVersion compat >= 2
 	lib:libxml2$secondaryArchSuffix = $portVersion compat >= 2
@@ -59,21 +62,29 @@ REQUIRES_devel="
 	"
 
 if $pythonModuleEnabled; then
-	SUMMARY_python="The python module for libxml2"
-	PROVIDES_python="
-		libxml2${secondaryArchSuffix}_python = $portVersion
-		"
+	# Allows using dot in sub-package names (eg: "_python3.10" vs "_python310"):
+	eval "PACKAGE_NAME_$pythonPackage=\"${portName}_python$pythonVersion\""
+
+	eval "SUMMARY_$pythonPackage=\"The python module for libxml2\""
+
+	eval "PROVIDES_$pythonPackage=\"
+		${portName}_python$pythonVersion = $portVersion
+		\""
+
 	if [ -n "$secondaryArchSuffix" ]; then
-		PROVIDES_python+="
-			libxml2_python = $portVersion
-			"
+		eval "PROVIDES_${pythonPackage}+=\"
+			${portBaseName}_python$pythonVersion= $portVersion
+			\""
 	fi
-	REQUIRES_python="
+
+	eval "REQUIRES_$pythonPackage=\"
 		libxml2$secondaryArchSuffix == $portVersion base
 		haiku$secondaryArchSuffix
 		lib:libz$secondaryArchSuffix
-		cmd:python3
-		"
+		cmd:python$pythonVersion
+		\""
+
+	eval "REPLACES_$pythonPackage=\"${portName}_python\""
 fi
 
 BUILD_REQUIRES="
@@ -83,7 +94,7 @@ BUILD_REQUIRES="
 	"
 if $pythonModuleEnabled; then
 	BUILD_REQUIRES="$BUILD_REQUIRES
-		cmd:python3
+		cmd:python$pythonVersion
 		"
 fi
 BUILD_PREREQUIRES="
@@ -113,7 +124,7 @@ BUILD()
 		# We symlink python's directories into our packaging directory and tell
 		# configure that it can find python there. This way the correct
 		# installation directory for the python module is determined.
-		pythonDir="$portPackageLinksDir/cmd~python3.10"
+		pythonDir="$portPackageLinksDir/cmd~python$pythonVersion"
 		ln -s $pythonDir/bin $pythonDir/develop $pythonDir/lib $prefix
 		withPython="--with-python=$prefix"
 	else
@@ -151,7 +162,7 @@ INSTALL()
 
 	# python package
 	if $pythonModuleEnabled; then
-		packageEntries python \
+		packageEntries $pythonPackage \
 			$prefix/lib/python*
 	fi