In FHS distros rocm-core expects to be installed colocated with a full set of ROCM packages.
In nixpkgs contexts, we don't want rocm-core to be a ROCM_PATH root.
diff --git a/cmake_modules/rocm-core-config.cmake.in b/cmake_modules/rocm-core-config.cmake.in
index f5fe07c..9d72c9c 100644
--- a/cmake_modules/rocm-core-config.cmake.in
+++ b/cmake_modules/rocm-core-config.cmake.in
@@ -11,7 +11,14 @@ set_and_check(rocm_core_INCLUDE_DIR "@PACKAGE_INCLUDE_INSTALL_DIR@")
 set_and_check(ROCM_CORE_INCLUDE_DIR "@PACKAGE_INCLUDE_INSTALL_DIR@")
 set_and_check(rocm_core_LIB_DIR "@PACKAGE_LIB_INSTALL_DIR@")
 set_and_check(ROCM_CORE_LIB_DIR "@PACKAGE_LIB_INSTALL_DIR@")
-set_and_check(ROCM_PATH "${PACKAGE_PREFIX_DIR}")
+# Set ROCM_PATH with priority: existing value > environment variable > package prefix
+if(NOT DEFINED ROCM_PATH)
+    if(DEFINED ENV{ROCM_PATH})
+        set(ROCM_PATH "$ENV{ROCM_PATH}")
+    else()
+        set_and_check(ROCM_PATH "${PACKAGE_PREFIX_DIR}")
+    endif()
+endif()
 
 get_filename_component(ROCM_CORE_CMAKE_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
 include("${ROCM_CORE_CMAKE_DIR}/rocmCoreTargets.cmake")