diff --git a/libcxx/include/__algorithm/in_in_out_result.h b/libcxx/include/__algorithm/in_in_out_result.h
--- a/libcxx/include/__algorithm/in_in_out_result.h
+++ b/libcxx/include/__algorithm/in_in_out_result.h
@@ -16,7 +16,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#ifndef _LIBCPP_HAS_NO_RANGES
+#ifndef _LIBCPP_HAS_NO_CONCEPTS
 
 namespace ranges {
 template <class _I1, class _I2, class _O1>
@@ -41,7 +41,7 @@
 };
 } // namespace ranges
 
-#endif // _LIBCPP_HAS_NO_RANGES
+#endif // _LIBCPP_HAS_NO_CONCEPTS
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__algorithm/in_in_result.h b/libcxx/include/__algorithm/in_in_result.h
--- a/libcxx/include/__algorithm/in_in_result.h
+++ b/libcxx/include/__algorithm/in_in_result.h
@@ -16,7 +16,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#ifndef _LIBCPP_HAS_NO_RANGES
+#ifndef _LIBCPP_HAS_NO_CONCEPTS
 
 namespace ranges {
 template <class _I1, class _I2>
@@ -38,7 +38,7 @@
 };
 } // namespace ranges
 
-#endif // _LIBCPP_HAS_NO_RANGES
+#endif // _LIBCPP_HAS_NO_CONCEPTS
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__algorithm/in_out_result.h b/libcxx/include/__algorithm/in_out_result.h
--- a/libcxx/include/__algorithm/in_out_result.h
+++ b/libcxx/include/__algorithm/in_out_result.h
@@ -20,7 +20,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 namespace ranges {
 
 template<class _InputIterator, class _OutputIterator>
@@ -45,7 +45,7 @@
 };
 
 } // namespace ranges
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__config b/libcxx/include/__config
--- a/libcxx/include/__config
+++ b/libcxx/include/__config
@@ -875,14 +875,10 @@
 #  define _LIBCPP_CONSTEVAL consteval
 #endif
 
-#if !defined(__cpp_concepts) || __cpp_concepts < 201907L
+#if _LIBCPP_STD_VER <= 17 || !defined(__cpp_concepts) || __cpp_concepts < 201907L
 #define _LIBCPP_HAS_NO_CONCEPTS
 #endif
 
-#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_HAS_NO_CONCEPTS)
-#define _LIBCPP_HAS_NO_RANGES
-#endif
-
 #ifdef __GNUC__
 #  define _LIBCPP_NOALIAS __attribute__((__malloc__))
 #else
diff --git a/libcxx/include/__filesystem/directory_iterator.h b/libcxx/include/__filesystem/directory_iterator.h
--- a/libcxx/include/__filesystem/directory_iterator.h
+++ b/libcxx/include/__filesystem/directory_iterator.h
@@ -133,7 +133,7 @@
 
 _LIBCPP_END_NAMESPACE_FILESYSTEM
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 template <>
 _LIBCPP_AVAILABILITY_FILESYSTEM
diff --git a/libcxx/include/__filesystem/recursive_directory_iterator.h b/libcxx/include/__filesystem/recursive_directory_iterator.h
--- a/libcxx/include/__filesystem/recursive_directory_iterator.h
+++ b/libcxx/include/__filesystem/recursive_directory_iterator.h
@@ -164,7 +164,7 @@
 
 _LIBCPP_END_NAMESPACE_FILESYSTEM
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 template <>
 _LIBCPP_AVAILABILITY_FILESYSTEM
diff --git a/libcxx/include/__functional/ranges_operations.h b/libcxx/include/__functional/ranges_operations.h
--- a/libcxx/include/__functional/ranges_operations.h
+++ b/libcxx/include/__functional/ranges_operations.h
@@ -20,7 +20,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 namespace ranges {
 
 struct equal_to {
@@ -90,7 +90,7 @@
 };
 
 } // namespace ranges
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/advance.h b/libcxx/include/__iterator/advance.h
--- a/libcxx/include/__iterator/advance.h
+++ b/libcxx/include/__iterator/advance.h
@@ -64,7 +64,7 @@
   _VSTD::__advance(__i, __n, typename iterator_traits<_InputIter>::iterator_category());
 }
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [range.iter.op.advance]
 
@@ -192,7 +192,7 @@
 } // namespace __cpo
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/common_iterator.h b/libcxx/include/__iterator/common_iterator.h
--- a/libcxx/include/__iterator/common_iterator.h
+++ b/libcxx/include/__iterator/common_iterator.h
@@ -27,7 +27,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 template<class _Iter>
 concept __can_use_postfix_proxy =
@@ -276,7 +276,7 @@
   using reference = iter_reference_t<_Iter>;
 };
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/concepts.h b/libcxx/include/__iterator/concepts.h
--- a/libcxx/include/__iterator/concepts.h
+++ b/libcxx/include/__iterator/concepts.h
@@ -26,7 +26,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [iterator.concept.readable]
 template<class _In>
@@ -257,7 +257,7 @@
 // Note: indirectly_swappable is located in iter_swap.h to prevent a dependency cycle
 // (both iter_swap and indirectly_swappable require indirectly_readable).
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/counted_iterator.h b/libcxx/include/__iterator/counted_iterator.h
--- a/libcxx/include/__iterator/counted_iterator.h
+++ b/libcxx/include/__iterator/counted_iterator.h
@@ -30,7 +30,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 template<class>
 struct __counted_iterator_concept {};
@@ -296,7 +296,7 @@
                                 add_pointer_t<iter_reference_t<_Iter>>, void>;
 };
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/default_sentinel.h b/libcxx/include/__iterator/default_sentinel.h
--- a/libcxx/include/__iterator/default_sentinel.h
+++ b/libcxx/include/__iterator/default_sentinel.h
@@ -18,12 +18,12 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 struct default_sentinel_t { };
 inline constexpr default_sentinel_t default_sentinel{};
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/incrementable_traits.h b/libcxx/include/__iterator/incrementable_traits.h
--- a/libcxx/include/__iterator/incrementable_traits.h
+++ b/libcxx/include/__iterator/incrementable_traits.h
@@ -20,7 +20,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [incrementable.traits]
 template<class> struct incrementable_traits {};
@@ -65,7 +65,7 @@
                                                  incrementable_traits<remove_cvref_t<_Ip> >,
                                                  iterator_traits<remove_cvref_t<_Ip> > >::difference_type;
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/indirectly_comparable.h b/libcxx/include/__iterator/indirectly_comparable.h
--- a/libcxx/include/__iterator/indirectly_comparable.h
+++ b/libcxx/include/__iterator/indirectly_comparable.h
@@ -17,13 +17,13 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#ifndef _LIBCPP_HAS_NO_RANGES
+#ifndef _LIBCPP_HAS_NO_CONCEPTS
 
 template <class _I1, class _I2, class _Rp, class _P1 = identity, class _P2 = identity>
 concept indirectly_comparable =
   indirect_binary_predicate<_Rp, projected<_I1, _P1>, projected<_I2, _P2>>;
 
-#endif // _LIBCPP_HAS_NO_RANGES
+#endif // _LIBCPP_HAS_NO_CONCEPTS
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/insert_iterator.h b/libcxx/include/__iterator/insert_iterator.h
--- a/libcxx/include/__iterator/insert_iterator.h
+++ b/libcxx/include/__iterator/insert_iterator.h
@@ -24,7 +24,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
 template <class _Container>
 using __insert_iterator_iter_t = ranges::iterator_t<_Container>;
 #else
diff --git a/libcxx/include/__iterator/iter_move.h b/libcxx/include/__iterator/iter_move.h
--- a/libcxx/include/__iterator/iter_move.h
+++ b/libcxx/include/__iterator/iter_move.h
@@ -23,7 +23,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [iterator.cust.move]
 
@@ -84,7 +84,7 @@
   requires requires(_Tp& __t) { { ranges::iter_move(__t) } -> __referenceable; }
 using iter_rvalue_reference_t = decltype(ranges::iter_move(declval<_Tp&>()));
 
-#endif // !_LIBCPP_HAS_NO_RANGES
+#endif // !_LIBCPP_HAS_NO_CONCEPTS
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/iter_swap.h b/libcxx/include/__iterator/iter_swap.h
--- a/libcxx/include/__iterator/iter_swap.h
+++ b/libcxx/include/__iterator/iter_swap.h
@@ -26,7 +26,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [iter.cust.swap]
 
@@ -98,7 +98,7 @@
     ranges::iter_swap(__i2, __i1);
   };
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/iterator_traits.h b/libcxx/include/__iterator/iterator_traits.h
--- a/libcxx/include/__iterator/iterator_traits.h
+++ b/libcxx/include/__iterator/iterator_traits.h
@@ -22,7 +22,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 template <class _Tp>
 using __with_reference = _Tp&;
@@ -41,7 +41,7 @@
 template<__dereferenceable _Tp>
 using iter_reference_t = decltype(*declval<_Tp&>());
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 template <class _Iter>
 struct _LIBCPP_TEMPLATE_VIS iterator_traits;
@@ -139,7 +139,7 @@
     static const bool value = sizeof(__test<_Tp>(nullptr)) == 1;
 };
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // The `cpp17-*-iterator` exposition-only concepts are easily confused with the Cpp17*Iterator tables,
 // so they've been banished to a namespace that makes it obvious they have a niche use-case.
@@ -362,7 +362,7 @@
   using __primary_template = iterator_traits;
 };
 
-#else // !defined(_LIBCPP_HAS_NO_RANGES)
+#else // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 template <class _Iter, bool> struct __iterator_traits {};
 
@@ -399,10 +399,10 @@
 
   using __primary_template = iterator_traits;
 };
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 template<class _Tp>
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 requires is_object_v<_Tp>
 #endif
 struct _LIBCPP_TEMPLATE_VIS iterator_traits<_Tp*>
diff --git a/libcxx/include/__iterator/next.h b/libcxx/include/__iterator/next.h
--- a/libcxx/include/__iterator/next.h
+++ b/libcxx/include/__iterator/next.h
@@ -35,7 +35,7 @@
   return __x;
 }
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [range.iter.op.next]
 
@@ -79,7 +79,7 @@
 } // namespace __cpo
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/prev.h b/libcxx/include/__iterator/prev.h
--- a/libcxx/include/__iterator/prev.h
+++ b/libcxx/include/__iterator/prev.h
@@ -34,7 +34,7 @@
   return __x;
 }
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [range.iter.op.prev]
 
@@ -71,7 +71,7 @@
 } // namespace __cpo
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/projected.h b/libcxx/include/__iterator/projected.h
--- a/libcxx/include/__iterator/projected.h
+++ b/libcxx/include/__iterator/projected.h
@@ -20,7 +20,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 template<indirectly_readable _It, indirectly_regular_unary_invocable<_It> _Proj>
 struct projected {
@@ -33,7 +33,7 @@
   using difference_type = iter_difference_t<_It>;
 };
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/readable_traits.h b/libcxx/include/__iterator/readable_traits.h
--- a/libcxx/include/__iterator/readable_traits.h
+++ b/libcxx/include/__iterator/readable_traits.h
@@ -20,7 +20,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [readable.traits]
 template<class> struct __cond_value_type {};
@@ -79,7 +79,7 @@
                                             indirectly_readable_traits<remove_cvref_t<_Ip> >,
                                             iterator_traits<remove_cvref_t<_Ip> > >::value_type;
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__iterator/unreachable_sentinel.h b/libcxx/include/__iterator/unreachable_sentinel.h
--- a/libcxx/include/__iterator/unreachable_sentinel.h
+++ b/libcxx/include/__iterator/unreachable_sentinel.h
@@ -19,7 +19,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 struct unreachable_sentinel_t {
   template<weakly_incrementable _Iter>
@@ -31,7 +31,7 @@
 
 inline constexpr unreachable_sentinel_t unreachable_sentinel{};
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__memory/concepts.h b/libcxx/include/__memory/concepts.h
--- a/libcxx/include/__memory/concepts.h
+++ b/libcxx/include/__memory/concepts.h
@@ -25,7 +25,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 namespace ranges {
 
 // [special.mem.concepts]
@@ -59,7 +59,7 @@
     __nothrow_forward_iterator<iterator_t<_Rp>>;
 
 } // namespace ranges
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__memory/ranges_construct_at.h b/libcxx/include/__memory/ranges_construct_at.h
--- a/libcxx/include/__memory/ranges_construct_at.h
+++ b/libcxx/include/__memory/ranges_construct_at.h
@@ -29,7 +29,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 namespace ranges {
 
 // construct_at
@@ -117,7 +117,7 @@
 
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__memory/ranges_uninitialized_algorithms.h b/libcxx/include/__memory/ranges_uninitialized_algorithms.h
--- a/libcxx/include/__memory/ranges_uninitialized_algorithms.h
+++ b/libcxx/include/__memory/ranges_uninitialized_algorithms.h
@@ -32,7 +32,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 namespace ranges {
 
 // uninitialized_default_construct
@@ -309,7 +309,7 @@
 } // namespace __cpo
 
 } // namespace ranges
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/access.h b/libcxx/include/__ranges/access.h
--- a/libcxx/include/__ranges/access.h
+++ b/libcxx/include/__ranges/access.h
@@ -25,7 +25,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template <class _Tp>
@@ -213,7 +213,7 @@
 } // namespace __cpo
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/all.h b/libcxx/include/__ranges/all.h
--- a/libcxx/include/__ranges/all.h
+++ b/libcxx/include/__ranges/all.h
@@ -28,7 +28,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges::views {
 
@@ -75,7 +75,7 @@
 
 } // namespace ranges::views
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/common_view.h b/libcxx/include/__ranges/common_view.h
--- a/libcxx/include/__ranges/common_view.h
+++ b/libcxx/include/__ranges/common_view.h
@@ -30,7 +30,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
 
@@ -128,7 +128,7 @@
 } // namespace views
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/concepts.h b/libcxx/include/__ranges/concepts.h
--- a/libcxx/include/__ranges/concepts.h
+++ b/libcxx/include/__ranges/concepts.h
@@ -32,7 +32,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   // [range.range]
@@ -133,7 +133,7 @@
 
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/copyable_box.h b/libcxx/include/__ranges/copyable_box.h
--- a/libcxx/include/__ranges/copyable_box.h
+++ b/libcxx/include/__ranges/copyable_box.h
@@ -24,7 +24,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // __copyable_box allows turning a type that is copy-constructible (but maybe not copy-assignable) into
 // a type that is both copy-constructible and copy-assignable. It does that by introducing an empty state
@@ -171,7 +171,7 @@
   };
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/counted.h b/libcxx/include/__ranges/counted.h
--- a/libcxx/include/__ranges/counted.h
+++ b/libcxx/include/__ranges/counted.h
@@ -29,7 +29,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges::views {
 
@@ -74,7 +74,7 @@
 
 } // namespace ranges::views
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/dangling.h b/libcxx/include/__ranges/dangling.h
--- a/libcxx/include/__ranges/dangling.h
+++ b/libcxx/include/__ranges/dangling.h
@@ -21,7 +21,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
 struct dangling {
@@ -35,7 +35,7 @@
 // borrowed_subrange_t defined in <__ranges/subrange.h>
 } // namespace ranges
 
-#endif // !_LIBCPP_HAS_NO_RANGES
+#endif // !_LIBCPP_HAS_NO_CONCEPTS
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/data.h b/libcxx/include/__ranges/data.h
--- a/libcxx/include/__ranges/data.h
+++ b/libcxx/include/__ranges/data.h
@@ -24,7 +24,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [range.prim.data]
 
@@ -99,7 +99,7 @@
 } // namespace __cpo
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/drop_view.h b/libcxx/include/__ranges/drop_view.h
--- a/libcxx/include/__ranges/drop_view.h
+++ b/libcxx/include/__ranges/drop_view.h
@@ -31,7 +31,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<view _View>
@@ -120,7 +120,7 @@
   inline constexpr bool enable_borrowed_range<drop_view<_Tp>> = enable_borrowed_range<_Tp>;
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/empty.h b/libcxx/include/__ranges/empty.h
--- a/libcxx/include/__ranges/empty.h
+++ b/libcxx/include/__ranges/empty.h
@@ -22,7 +22,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [range.prim.empty]
 
@@ -75,7 +75,7 @@
 } // namespace __cpo
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/empty_view.h b/libcxx/include/__ranges/empty_view.h
--- a/libcxx/include/__ranges/empty_view.h
+++ b/libcxx/include/__ranges/empty_view.h
@@ -20,7 +20,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<class _Tp>
@@ -38,7 +38,7 @@
   inline constexpr bool enable_borrowed_range<empty_view<_Tp>> = true;
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/enable_borrowed_range.h b/libcxx/include/__ranges/enable_borrowed_range.h
--- a/libcxx/include/__ranges/enable_borrowed_range.h
+++ b/libcxx/include/__ranges/enable_borrowed_range.h
@@ -22,7 +22,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges
 {
@@ -34,7 +34,7 @@
 
 } // namespace ranges
 
-#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/enable_view.h b/libcxx/include/__ranges/enable_view.h
--- a/libcxx/include/__ranges/enable_view.h
+++ b/libcxx/include/__ranges/enable_view.h
@@ -20,7 +20,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
 
@@ -40,7 +40,7 @@
 
 } // namespace ranges
 
-#endif // !_LIBCPP_HAS_NO_RANGES
+#endif // !_LIBCPP_HAS_NO_CONCEPTS
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/iota_view.h b/libcxx/include/__ranges/iota_view.h
--- a/libcxx/include/__ranges/iota_view.h
+++ b/libcxx/include/__ranges/iota_view.h
@@ -39,7 +39,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<class _Int>
@@ -401,7 +401,7 @@
 } // namespace views
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/join_view.h b/libcxx/include/__ranges/join_view.h
--- a/libcxx/include/__ranges/join_view.h
+++ b/libcxx/include/__ranges/join_view.h
@@ -30,7 +30,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<class>
@@ -343,7 +343,7 @@
 
 #undef _CONSTEXPR_TERNARY
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/non_propagating_cache.h b/libcxx/include/__ranges/non_propagating_cache.h
--- a/libcxx/include/__ranges/non_propagating_cache.h
+++ b/libcxx/include/__ranges/non_propagating_cache.h
@@ -24,7 +24,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   // __non_propagating_cache is a helper type that allows storing an optional value in it,
@@ -107,7 +107,7 @@
   struct __empty_cache { };
 } // namespace ranges
 
-#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/owning_view.h b/libcxx/include/__ranges/owning_view.h
--- a/libcxx/include/__ranges/owning_view.h
+++ b/libcxx/include/__ranges/owning_view.h
@@ -28,7 +28,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<range _Rp>
@@ -74,7 +74,7 @@
 
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/range_adaptor.h b/libcxx/include/__ranges/range_adaptor.h
--- a/libcxx/include/__ranges/range_adaptor.h
+++ b/libcxx/include/__ranges/range_adaptor.h
@@ -25,7 +25,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // CRTP base that one can derive from in order to be considered a range adaptor closure
 // by the library. When deriving from this class, a pipe operator will be provided to
@@ -66,7 +66,7 @@
     { return __range_adaptor_closure_t(_VSTD::__compose(_VSTD::forward<_OtherClosure>(__c2), _VSTD::forward<_Closure>(__c1))); }
 };
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/ref_view.h b/libcxx/include/__ranges/ref_view.h
--- a/libcxx/include/__ranges/ref_view.h
+++ b/libcxx/include/__ranges/ref_view.h
@@ -31,7 +31,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<range _Range>
@@ -79,7 +79,7 @@
   inline constexpr bool enable_borrowed_range<ref_view<_Tp>> = true;
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/reverse_view.h b/libcxx/include/__ranges/reverse_view.h
--- a/libcxx/include/__ranges/reverse_view.h
+++ b/libcxx/include/__ranges/reverse_view.h
@@ -33,7 +33,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<view _View>
@@ -183,7 +183,7 @@
   } // namespace views
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/single_view.h b/libcxx/include/__ranges/single_view.h
--- a/libcxx/include/__ranges/single_view.h
+++ b/libcxx/include/__ranges/single_view.h
@@ -24,7 +24,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<copy_constructible _Tp>
@@ -74,7 +74,7 @@
   single_view(_Tp) -> single_view<_Tp>;
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/size.h b/libcxx/include/__ranges/size.h
--- a/libcxx/include/__ranges/size.h
+++ b/libcxx/include/__ranges/size.h
@@ -24,7 +24,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<class>
@@ -128,7 +128,7 @@
 } // namespace __cpo
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/subrange.h b/libcxx/include/__ranges/subrange.h
--- a/libcxx/include/__ranges/subrange.h
+++ b/libcxx/include/__ranges/subrange.h
@@ -36,7 +36,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<class _From, class _To>
@@ -282,7 +282,7 @@
   using type = _Sp;
 };
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/take_view.h b/libcxx/include/__ranges/take_view.h
--- a/libcxx/include/__ranges/take_view.h
+++ b/libcxx/include/__ranges/take_view.h
@@ -34,7 +34,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
   template<view _View>
@@ -176,7 +176,7 @@
   inline constexpr bool enable_borrowed_range<take_view<_Tp>> = enable_borrowed_range<_Tp>;
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/transform_view.h b/libcxx/include/__ranges/transform_view.h
--- a/libcxx/include/__ranges/transform_view.h
+++ b/libcxx/include/__ranges/transform_view.h
@@ -42,7 +42,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
 
@@ -434,7 +434,7 @@
 
 } // namespace ranges
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/__ranges/view_interface.h b/libcxx/include/__ranges/view_interface.h
--- a/libcxx/include/__ranges/view_interface.h
+++ b/libcxx/include/__ranges/view_interface.h
@@ -27,7 +27,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace ranges {
 
@@ -188,7 +188,7 @@
 
 }
 
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/ranges b/libcxx/include/ranges
--- a/libcxx/include/ranges
+++ b/libcxx/include/ranges
@@ -239,11 +239,11 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 namespace views = ranges::views;
 
-#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 _LIBCPP_END_NAMESPACE_STD
 
diff --git a/libcxx/include/span b/libcxx/include/span
--- a/libcxx/include/span
+++ b/libcxx/include/span
@@ -170,7 +170,7 @@
 template <class _Tp, size_t _Sz>
 struct __is_std_span<span<_Tp, _Sz>> : true_type {};
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 template <class _Range, class _ElementType>
 concept __span_compatible_range =
   ranges::contiguous_range<_Range> &&
@@ -210,7 +210,7 @@
     constexpr span           (const span&) noexcept = default;
     constexpr span& operator=(const span&) noexcept = default;
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
     template <class _It,
               enable_if_t<contiguous_iterator<_It> &&
                               is_convertible_v<remove_reference_t<iter_reference_t<_It>>(*)[], element_type (*)[]>,
@@ -248,7 +248,7 @@
     _LIBCPP_INLINE_VISIBILITY
     constexpr span(const array<_OtherElementType, _Extent>& __arr) noexcept : __data{__arr.data()} {}
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
     template <__span_compatible_range<element_type> _Range>
     _LIBCPP_INLINE_VISIBILITY
     constexpr explicit span(_Range&& __r) : __data{ranges::data(__r)} {
@@ -401,7 +401,7 @@
     constexpr span           (const span&) noexcept = default;
     constexpr span& operator=(const span&) noexcept = default;
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
     template <class _It,
               enable_if_t<contiguous_iterator<_It> &&
                               is_convertible_v<remove_reference_t<iter_reference_t<_It> > (*)[], element_type (*)[]>,
@@ -434,7 +434,7 @@
     _LIBCPP_INLINE_VISIBILITY
     constexpr span(const array<_OtherElementType, _Sz>& __arr) noexcept : __data{__arr.data()}, __size{_Sz} {}
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
     template <__span_compatible_range<element_type> _Range>
     _LIBCPP_INLINE_VISIBILITY
     constexpr span(_Range&& __r) : __data(ranges::data(__r)), __size{ranges::size(__r)} {}
@@ -543,13 +543,13 @@
     size_type __size;
 };
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 template <class _Tp, size_t _Extent>
 inline constexpr bool ranges::enable_borrowed_range<span<_Tp, _Extent> > = true;
 
 template <class _ElementType, size_t _Extent>
 inline constexpr bool ranges::enable_view<span<_ElementType, _Extent>> = true;
-#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 //  as_bytes & as_writable_bytes
 template <class _Tp, size_t _Extent>
@@ -564,7 +564,7 @@
 -> enable_if_t<!is_const_v<_Tp>, decltype(__s.__as_writable_bytes())>
 { return __s.__as_writable_bytes(); }
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 //  Deduction guides
 template<contiguous_iterator _It, class _EndOrSize>
     span(_It, _EndOrSize) -> span<remove_reference_t<iter_reference_t<_It>>>;
@@ -579,7 +579,7 @@
 template<class _Tp, size_t _Sz>
     span(const array<_Tp, _Sz>&) -> span<const _Tp, _Sz>;
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 template<ranges::contiguous_range _Range>
     span(_Range&&) -> span<remove_reference_t<ranges::range_reference_t<_Range>>>;
 #endif
diff --git a/libcxx/include/string_view b/libcxx/include/string_view
--- a/libcxx/include/string_view
+++ b/libcxx/include/string_view
@@ -286,7 +286,7 @@
 #endif
     }
 
-#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
     template <contiguous_iterator _It, sized_sentinel_for<_It> _End>
       requires (is_same_v<iter_value_t<_It>, _CharT> && !is_convertible_v<_End, size_type>)
     constexpr _LIBCPP_HIDE_FROM_ABI basic_string_view(_It __begin, _End __end)
@@ -296,7 +296,7 @@
     }
 #endif
 
-#if _LIBCPP_STD_VER > 20 && !defined(_LIBCPP_HAS_NO_RANGES)
+#if _LIBCPP_STD_VER > 20 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
     template <class _Range>
       requires (
         !is_same_v<remove_cvref_t<_Range>, basic_string_view> &&
@@ -707,23 +707,23 @@
     size_type           __size;
 };
 
-#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
 template <class _CharT, class _Traits>
 inline constexpr bool ranges::enable_view<basic_string_view<_CharT, _Traits>> = true;
 
 template <class _CharT, class _Traits>
 inline constexpr bool ranges::enable_borrowed_range<basic_string_view<_CharT, _Traits> > = true;
-#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
 
 // [string.view.deduct]
 
-#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
 template <contiguous_iterator _It, sized_sentinel_for<_It> _End>
   basic_string_view(_It, _End) -> basic_string_view<iter_value_t<_It>>;
 #endif
 
 
-#if _LIBCPP_STD_VER > 20 && !defined(_LIBCPP_HAS_NO_RANGES)
+#if _LIBCPP_STD_VER > 20 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
 template <ranges::contiguous_range _Range>
   basic_string_view(_Range) -> basic_string_view<ranges::range_value_t<_Range>>;
 #endif
diff --git a/libcxx/test/std/input.output/filesystems/class.path/path.itr/iterator.pass.cpp b/libcxx/test/std/input.output/filesystems/class.path/path.itr/iterator.pass.cpp
--- a/libcxx/test/std/input.output/filesystems/class.path/path.itr/iterator.pass.cpp
+++ b/libcxx/test/std/input.output/filesystems/class.path/path.itr/iterator.pass.cpp
@@ -31,7 +31,7 @@
   using It = path::iterator;
   using Traits = std::iterator_traits<It>;
   ASSERT_SAME_TYPE(path::const_iterator, It);
-#if TEST_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES)
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CONCEPTS)
   static_assert(std::bidirectional_iterator<It>);
 #endif
   ASSERT_SAME_TYPE(Traits::value_type, path);
diff --git a/libcxx/test/support/test_macros.h b/libcxx/test/support/test_macros.h
--- a/libcxx/test/support/test_macros.h
+++ b/libcxx/test/support/test_macros.h
@@ -243,7 +243,7 @@
 #define LIBCPP_ONLY(...) static_assert(true, "")
 #endif
 
-#if !defined(_LIBCPP_HAS_NO_RANGES)
+#if !defined(_LIBCPP_HAS_NO_CONCEPTS)
 #define TEST_SUPPORTS_RANGES
 #endif
 
diff --git a/libcxx/test/support/test_range.h b/libcxx/test/support/test_range.h
--- a/libcxx/test/support/test_range.h
+++ b/libcxx/test/support/test_range.h
@@ -13,7 +13,7 @@
 
 #include "test_iterators.h"
 
-#ifdef _LIBCPP_HAS_NO_RANGES
+#ifdef _LIBCPP_HAS_NO_CONCEPTS
 #error "test/support/test_range.h" can only be included in builds supporting ranges
 #endif