libtorrent-rasterbar: fix build with python3.12

pkgs/development/libraries/libtorrent-rasterbar/default.nix

@@ -25,10 +25,13 @@ in stdenv.mkDerivation {
   buildInputs = [ boostPython openssl zlib python ncurses ]
     ++ lib.optionals stdenv.isDarwin [ SystemConfiguration ];
 
+  patches = [
+    # provide distutils alternative for python 3.12
+    ./distutils.patch
+  ];
+
   # https://github.com/arvidn/libtorrent/issues/6865
   postPatch = ''
-    substituteInPlace cmake/Modules/GeneratePkgConfig.cmake \
-      --replace @CMAKE_INSTALL_PREFIX@/'$<'1: '$<'1:
     substituteInPlace cmake/Modules/GeneratePkgConfig/target-compile-settings.cmake.in \
       --replace 'set(_INSTALL_LIBDIR "@CMAKE_INSTALL_LIBDIR@")' \
                 'set(_INSTALL_LIBDIR "@CMAKE_INSTALL_LIBDIR@")

pkgs/development/libraries/libtorrent-rasterbar/distutils.patch

@@ -0,0 +1,20 @@
+diff --git a/bindings/python/CMakeLists.txt b/bindings/python/CMakeLists.txt
+index 2f4de4854..a68d547e6 100644
+--- a/bindings/python/CMakeLists.txt
++++ b/bindings/python/CMakeLists.txt
+@@ -95,8 +95,13 @@ if (python-install-system-dir)
+ else()
+ 	execute_process(
+ 		COMMAND "${Python3_EXECUTABLE}" -c [=[
+-import distutils.sysconfig
+-print(distutils.sysconfig.get_python_lib(prefix='', plat_specific=True))
++try:
++	import distutils.sysconfig
++	print(distutils.sysconfig.get_python_lib(prefix='', plat_specific=True))
++except ModuleNotFoundError:
++	import os, sys
++	version = f"{sys.version_info.major}.{sys.version_info.minor}"
++	print(os.sep.join(["lib", f"python{version}", "site-packages"]))
+ ]=]
+ 		OUTPUT_VARIABLE _PYTHON3_SITE_ARCH
+ 		OUTPUT_STRIP_TRAILING_WHITESPACE