Index: libcxx/include/CMakeLists.txt
===================================================================
--- libcxx/include/CMakeLists.txt
+++ libcxx/include/CMakeLists.txt
@@ -350,6 +350,7 @@
   __ranges/take_view.h
   __ranges/transform_view.h
   __ranges/view_interface.h
+  __ranges/views.h
   __split_buffer
   __std_stream
   __string
Index: libcxx/include/__ranges/views.h
===================================================================
--- /dev/null
+++ libcxx/include/__ranges/views.h
@@ -0,0 +1,31 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___RANGES_VIEWS
+#define _LIBCPP___RANGES_VIEWS
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
+
+namespace ranges {
+
+namespace views { }
+
+} // namespace ranges
+
+namespace views = ranges::views;
+
+#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
+
+#endif // _LIBCPP___RANGES_VIEWS
Index: libcxx/include/module.modulemap
===================================================================
--- libcxx/include/module.modulemap
+++ libcxx/include/module.modulemap
@@ -816,6 +816,7 @@
         export functional.__functional.perfect_forward
       }
       module view_interface         { private header "__ranges/view_interface.h" }
+      module views                  { private header "__ranges/views.h" }
     }
   }
   module ratio {
Index: libcxx/include/ranges
===================================================================
--- libcxx/include/ranges
+++ libcxx/include/ranges
@@ -228,6 +228,7 @@
 #include <__ranges/take_view.h>
 #include <__ranges/transform_view.h>
 #include <__ranges/view_interface.h>
+#include <__ranges/views.h>
 #include <compare>          // Required by the standard.
 #include <initializer_list> // Required by the standard.
 #include <iterator>         // Required by the standard.
@@ -237,16 +238,6 @@
 #pragma GCC system_header
 #endif
 
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
-
-namespace views = ranges::views;
-
-#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
-
-_LIBCPP_END_NAMESPACE_STD
-
 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
 
 #endif // _LIBCPP_RANGES
Index: libcxx/test/libcxx/diagnostics/detail.headers/ranges/views.module.verify.cpp
===================================================================
--- /dev/null
+++ libcxx/test/libcxx/diagnostics/detail.headers/ranges/views.module.verify.cpp
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: modules-build
+
+// WARNING: This test was generated by 'generate_private_header_tests.py'
+// and should not be edited manually.
+
+// expected-error@*:* {{use of private header from outside its module: '__ranges/views.h'}}
+#include <__ranges/views.h>