diff --git a/compiler/rustc_type_ir/src/canonical.rs b/compiler/rustc_type_ir/src/canonical.rs
index 4e46a3a13aa5..f02ada152a44 100644
--- a/compiler/rustc_type_ir/src/canonical.rs
+++ b/compiler/rustc_type_ir/src/canonical.rs
@@ -1,3 +1,5 @@
+#![allow(clippy::derived_hash_with_manual_eq)]
+
 use derive_where::derive_where;
 #[cfg(feature = "nightly")]
 use rustc_macros::{HashStable_NoContext, TyDecodable, TyEncodable};
@@ -167,6 +169,7 @@ pub enum CanonicalVarKind<I: Interner> {
     PlaceholderConst(I::PlaceholderConst),
 }
 
+// FIXME(GrigorenkoPV): consider not implementing PartialEq manually
 impl<I: Interner> PartialEq for CanonicalVarKind<I> {
     fn eq(&self, other: &Self) -> bool {
         match (self, other) {
diff --git a/compiler/rustc_type_ir/src/const_kind.rs b/compiler/rustc_type_ir/src/const_kind.rs
index dab2d3bf695c..685bb5f9a8bf 100644
--- a/compiler/rustc_type_ir/src/const_kind.rs
+++ b/compiler/rustc_type_ir/src/const_kind.rs
@@ -1,3 +1,5 @@
+#![allow(clippy::derived_hash_with_manual_eq)]
+
 use derive_where::derive_where;
 #[cfg(feature = "nightly")]
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
@@ -43,6 +45,7 @@ pub enum ConstKind<I: Interner> {
     Expr(I::ExprConst),
 }
 
+// FIXME(GrigorenkoPV): consider not implementing PartialEq manually
 impl<I: Interner> PartialEq for ConstKind<I> {
     fn eq(&self, other: &Self) -> bool {
         match (self, other) {
diff --git a/compiler/rustc_type_ir/src/predicate_kind.rs b/compiler/rustc_type_ir/src/predicate_kind.rs
index 5b8b22244ba6..70b7c29bdfcc 100644
--- a/compiler/rustc_type_ir/src/predicate_kind.rs
+++ b/compiler/rustc_type_ir/src/predicate_kind.rs
@@ -1,3 +1,5 @@
+#![allow(clippy::derived_hash_with_manual_eq)]
+
 use derive_where::derive_where;
 #[cfg(feature = "nightly")]
 use rustc_macros::{Decodable, Encodable, HashStable_NoContext, TyDecodable, TyEncodable};
@@ -38,6 +40,7 @@ pub enum ClauseKind<I: Interner> {
     ConstEvaluatable(I::Const),
 }
 
+// FIXME(GrigorenkoPV): consider not implementing PartialEq manually
 impl<I: Interner> PartialEq for ClauseKind<I> {
     fn eq(&self, other: &Self) -> bool {
         match (self, other) {
diff --git a/compiler/rustc_type_ir/src/region_kind.rs b/compiler/rustc_type_ir/src/region_kind.rs
index d56700f52eb8..61ac83fcc98c 100644
--- a/compiler/rustc_type_ir/src/region_kind.rs
+++ b/compiler/rustc_type_ir/src/region_kind.rs
@@ -1,3 +1,5 @@
+#![allow(clippy::derived_hash_with_manual_eq)]
+
 use derive_where::derive_where;
 #[cfg(feature = "nightly")]
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
@@ -193,6 +195,7 @@ const fn regionkind_discriminant<I: Interner>(value: &RegionKind<I>) -> usize {
     }
 }
 
+// FIXME(GrigorenkoPV): consider not implementing PartialEq manually
 // This is manually implemented because a derive would require `I: PartialEq`
 impl<I: Interner> PartialEq for RegionKind<I> {
     #[inline]
diff --git a/compiler/rustc_type_ir/src/ty_kind.rs b/compiler/rustc_type_ir/src/ty_kind.rs
index 29993a50aeea..db883511d75a 100644
--- a/compiler/rustc_type_ir/src/ty_kind.rs
+++ b/compiler/rustc_type_ir/src/ty_kind.rs
@@ -1,3 +1,5 @@
+#![allow(clippy::derived_hash_with_manual_eq)]
+
 use derive_where::derive_where;
 
 #[cfg(feature = "nightly")]
@@ -293,6 +295,7 @@ const fn tykind_discriminant<I: Interner>(value: &TyKind<I>) -> usize {
     }
 }
 
+// FIXME(GrigorenkoPV): consider not implementing PartialEq manually
 // This is manually implemented because a derive would require `I: PartialEq`
 impl<I: Interner> PartialEq for TyKind<I> {
     #[inline]