diff --git a/libcxx/docs/Contributing.rst b/libcxx/docs/Contributing.rst
--- a/libcxx/docs/Contributing.rst
+++ b/libcxx/docs/Contributing.rst
@@ -49,7 +49,7 @@
 
   - Did you add it to ``include/module.modulemap.in``?
   - Did you add it to ``include/CMakeLists.txt``?
-  - If it's a public header, did you update ``utils/libcxx/test/header_information.py``?
+  - If it's a public header, did you update ``utils/libcxx/header_information.py``?
 
 - Did you add the relevant feature test macro(s) for your feature? Did you update the ``generate_feature_test_macro_components.py`` script with it?
 - Did you run the ``libcxx-generate-files`` target and verify its output?
diff --git a/libcxx/test/libcxx/assertions/headers_declare_verbose_abort.gen.py b/libcxx/test/libcxx/assertions/headers_declare_verbose_abort.gen.py
--- a/libcxx/test/libcxx/assertions/headers_declare_verbose_abort.gen.py
+++ b/libcxx/test/libcxx/assertions/headers_declare_verbose_abort.gen.py
@@ -14,7 +14,7 @@
 
 import sys
 sys.path.append(sys.argv[1])
-from libcxx.test.header_information import lit_header_restrictions, public_headers
+from libcxx.header_information import lit_header_restrictions, public_headers
 
 for header in public_headers:
     # Skip C compatibility headers.
diff --git a/libcxx/test/libcxx/clang_tidy.gen.py b/libcxx/test/libcxx/clang_tidy.gen.py
--- a/libcxx/test/libcxx/clang_tidy.gen.py
+++ b/libcxx/test/libcxx/clang_tidy.gen.py
@@ -12,7 +12,7 @@
 
 import sys
 sys.path.append(sys.argv[1])
-from libcxx.test.header_information import lit_header_restrictions, public_headers
+from libcxx.header_information import lit_header_restrictions, public_headers
 
 for header in public_headers:
   BLOCKLIT = '' # block Lit from interpreting a RUN/XFAIL/etc inside the generation script
diff --git a/libcxx/test/libcxx/double_include.gen.py b/libcxx/test/libcxx/double_include.gen.py
--- a/libcxx/test/libcxx/double_include.gen.py
+++ b/libcxx/test/libcxx/double_include.gen.py
@@ -12,7 +12,7 @@
 
 import sys
 sys.path.append(sys.argv[1])
-from libcxx.test.header_information import lit_header_restrictions, public_headers
+from libcxx.header_information import lit_header_restrictions, public_headers
 
 for header in public_headers:
   BLOCKLIT = '' # block Lit from interpreting a RUN/XFAIL/etc inside the generation script
diff --git a/libcxx/test/libcxx/header_inclusions.gen.py b/libcxx/test/libcxx/header_inclusions.gen.py
--- a/libcxx/test/libcxx/header_inclusions.gen.py
+++ b/libcxx/test/libcxx/header_inclusions.gen.py
@@ -13,7 +13,7 @@
 
 import sys
 sys.path.append(sys.argv[1])
-from libcxx.test.header_information import lit_header_restrictions, public_headers, mandatory_inclusions
+from libcxx.header_information import lit_header_restrictions, public_headers, mandatory_inclusions
 
 for header in public_headers:
   header_guard = lambda h: f"_LIBCPP_{h.upper().replace('.', '_').replace('/', '_')}"
diff --git a/libcxx/test/libcxx/libcpp_version.gen.py b/libcxx/test/libcxx/libcpp_version.gen.py
--- a/libcxx/test/libcxx/libcpp_version.gen.py
+++ b/libcxx/test/libcxx/libcpp_version.gen.py
@@ -12,7 +12,7 @@
 
 import sys
 sys.path.append(sys.argv[1])
-from libcxx.test.header_information import lit_header_restrictions, public_headers
+from libcxx.header_information import lit_header_restrictions, public_headers
 
 for header in public_headers:
   print(f"""\
diff --git a/libcxx/test/libcxx/module_std.gen.py b/libcxx/test/libcxx/module_std.gen.py
--- a/libcxx/test/libcxx/module_std.gen.py
+++ b/libcxx/test/libcxx/module_std.gen.py
@@ -21,7 +21,7 @@
 import sys
 
 sys.path.append(sys.argv[1])
-from libcxx.test.header_information import toplevel_headers
+from libcxx.header_information import toplevel_headers
 
 BLOCKLIT = (
     ""  # block Lit from interpreting a RUN/XFAIL/etc inside the generation script
diff --git a/libcxx/test/libcxx/modules_include.gen.py b/libcxx/test/libcxx/modules_include.gen.py
--- a/libcxx/test/libcxx/modules_include.gen.py
+++ b/libcxx/test/libcxx/modules_include.gen.py
@@ -14,7 +14,7 @@
 
 import sys
 sys.path.append(sys.argv[1])
-from libcxx.test.header_information import lit_header_restrictions, public_headers
+from libcxx.header_information import lit_header_restrictions, public_headers
 
 for header in public_headers:
   BLOCKLIT = '' # block Lit from interpreting a RUN/XFAIL/etc inside the generation script
diff --git a/libcxx/test/libcxx/no_assert_include.gen.py b/libcxx/test/libcxx/no_assert_include.gen.py
--- a/libcxx/test/libcxx/no_assert_include.gen.py
+++ b/libcxx/test/libcxx/no_assert_include.gen.py
@@ -13,7 +13,7 @@
 
 import sys
 sys.path.append(sys.argv[1])
-from libcxx.test.header_information import lit_header_restrictions, public_headers
+from libcxx.header_information import lit_header_restrictions, public_headers
 
 for header in public_headers:
   if header == 'cassert':
diff --git a/libcxx/test/libcxx/system_reserved_names.gen.py b/libcxx/test/libcxx/system_reserved_names.gen.py
--- a/libcxx/test/libcxx/system_reserved_names.gen.py
+++ b/libcxx/test/libcxx/system_reserved_names.gen.py
@@ -13,7 +13,7 @@
 
 import sys
 sys.path.append(sys.argv[1])
-from libcxx.test.header_information import lit_header_restrictions, public_headers
+from libcxx.header_information import lit_header_restrictions, public_headers
 
 for header in public_headers:
   print(f"""\
diff --git a/libcxx/test/libcxx/transitive_includes.gen.py b/libcxx/test/libcxx/transitive_includes.gen.py
--- a/libcxx/test/libcxx/transitive_includes.gen.py
+++ b/libcxx/test/libcxx/transitive_includes.gen.py
@@ -20,7 +20,7 @@
 
 import sys
 sys.path.append(sys.argv[1])
-from libcxx.test.header_information import lit_header_restrictions, public_headers
+from libcxx.header_information import lit_header_restrictions, public_headers
 
 import re
 
diff --git a/libcxx/utils/libcxx/test/header_information.py b/libcxx/utils/libcxx/header_information.py
rename from libcxx/utils/libcxx/test/header_information.py
rename to libcxx/utils/libcxx/header_information.py
--- a/libcxx/utils/libcxx/test/header_information.py
+++ b/libcxx/utils/libcxx/header_information.py
@@ -15,10 +15,8 @@
     "coroutine": "// UNSUPPORTED: c++03, c++11, c++14, c++17",
     "cwchar": "// UNSUPPORTED: no-wide-characters",
     "cwctype": "// UNSUPPORTED: no-wide-characters",
-    "experimental/algorithm": "// UNSUPPORTED: c++03",
     "experimental/deque": "// UNSUPPORTED: c++03",
     "experimental/forward_list": "// UNSUPPORTED: c++03",
-    "experimental/functional": "// UNSUPPORTED: c++03",
     "experimental/iterator": "// UNSUPPORTED: c++03",
     "experimental/list": "// UNSUPPORTED: c++03",
     "experimental/map": "// UNSUPPORTED: c++03",
@@ -112,7 +110,7 @@
         and file.name != "libcxx.imp"
     )
 
-libcxx_root = pathlib.Path(os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))))
+libcxx_root = pathlib.Path(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
 include = pathlib.Path(os.path.join(libcxx_root, "include"))
 test = pathlib.Path(os.path.join(libcxx_root, "test"))
 assert libcxx_root.exists()