--- CMakeLists.txt.orig	2026-04-14 05:04:19 UTC
+++ CMakeLists.txt
@@ -375,7 +375,7 @@ if(PYBIND11_INSTALL)
   configure_file("${CMAKE_CURRENT_SOURCE_DIR}/tools/pybind11.pc.in"
                  "${CMAKE_CURRENT_BINARY_DIR}/pybind11.pc" @ONLY)
   install(FILES "${CMAKE_CURRENT_BINARY_DIR}/pybind11.pc"
-          DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig/")
+          DESTINATION "libdata/pkgconfig/")
 
   # When building a wheel, include __init__.py's for modules
   # (see https://github.com/pybind/pybind11/pull/5552)