diff --git a/ament_package/template/environment_hook/library_path.sh b/ament_package/template/environment_hook/library_path.sh
deleted file mode 100644
index 292e518..0000000
--- a/ament_package/template/environment_hook/library_path.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-# copied from ament_package/template/environment_hook/library_path.sh
-
-# detect if running on Darwin platform
-_UNAME=`uname -s`
-_IS_DARWIN=0
-if [ "$_UNAME" = "Darwin" ]; then
-  _IS_DARWIN=1
-fi
-unset _UNAME
-
-if [ $_IS_DARWIN -eq 0 ]; then
-  ament_prepend_unique_value LD_LIBRARY_PATH "$AMENT_CURRENT_PREFIX/lib"
-else
-  ament_prepend_unique_value DYLD_LIBRARY_PATH "$AMENT_CURRENT_PREFIX/lib"
-fi
-unset _IS_DARWIN
diff --git a/ament_package/templates.py b/ament_package/templates.py
index 885b972..463453c 100644
--- a/ament_package/templates.py
+++ b/ament_package/templates.py
@@ -17,15 +17,21 @@ import re
 
 try:
     import importlib.resources as importlib_resources
-except ModuleNotFoundError:
+    assert importlib_resources.files, "importlib reousrces too old to support files, please install importlib_resources"
+except (ModuleNotFoundError, AttributeError):
     import importlib_resources
 
 IS_WINDOWS = os.name == 'nt'
 
+# importlib
+# DeprecationWarning: path is deprecated. Use files() instead.
+# Refer to https://importlib-resources.readthedocs.io/en/latest/using.html#migrating-from-legacy 
+# for migration advice.
 
 def get_environment_hook_template_path(name):
-    with importlib_resources.path('ament_package.template.environment_hook', name) as path:
-        return str(path)
+    # with importlib_resources.path('ament_package.template.environment_hook', name) as path:
+    path =  importlib_resources.files('ament_package.template.environment_hook').joinpath(name)
+    return str(path)
 
 
 def get_package_level_template_names(all_platforms=False):
@@ -41,8 +47,9 @@ def get_package_level_template_names(all_platforms=False):
 
 
 def get_package_level_template_path(name):
-    with importlib_resources.path('ament_package.template.package_level', name) as path:
-        return str(path)
+    # with importlib_resources.path('ament_package.template.package_level', name) as path:
+    path = importlib_resources.files('ament_package.template.package_level').joinpath(name)
+    return str(path)
 
 
 def get_prefix_level_template_names(*, all_platforms=False):
@@ -61,8 +68,9 @@ def get_prefix_level_template_names(*, all_platforms=False):
 
 
 def get_prefix_level_template_path(name):
-    with importlib_resources.path('ament_package.template.prefix_level', name) as path:
-        return str(path)
+    # with importlib_resources.path('ament_package.template.prefix_level', name) as path:
+    path = importlib_resources.files('ament_package.template.prefix_level').joinpath(name)
+    return str(path)
 
 
 def get_isolated_prefix_level_template_names(*, all_platforms=False):
@@ -81,8 +89,9 @@ def get_isolated_prefix_level_template_names(*, all_platforms=False):
 
 
 def get_isolated_prefix_level_template_path(name):
-    with importlib_resources.path('ament_package.template.isolated_prefix_level', name) as path:
-        return str(path)
+    #with importlib_resources.path('ament_package.template.isolated_prefix_level', name) as path:
+    path = importlib_resources.files('ament_package.template.isolated_prefix_level').joinpath(name)
+    return str(path)
 
 
 def configure_file(template_file, environment):