Move the info about perfect derive to shared.rs
PiperOrigin-RevId: 590702727
diff --git a/rust/cpp.rs b/rust/cpp.rs
index 2090a66..1d0fbe1 100644
--- a/rust/cpp.rs
+++ b/rust/cpp.rs
@@ -229,9 +229,6 @@
}
}
-// These use manual impls instead of derives to avoid unnecessary bounds on `T`.
-// This problem is referred to as "perfect derive".
-// https://smallcultfollowing.com/babysteps/blog/2022/04/12/implied-bounds-and-perfect-derive/
impl<'msg, T: ?Sized> Copy for RepeatedField<'msg, T> {}
impl<'msg, T: ?Sized> Clone for RepeatedField<'msg, T> {
fn clone(&self) -> RepeatedField<'msg, T> {
diff --git a/rust/shared.rs b/rust/shared.rs
index f94f987..620d285 100644
--- a/rust/shared.rs
+++ b/rust/shared.rs
@@ -13,6 +13,11 @@
use std::fmt;
+// There are a number of manual `Debug` and similar impls instead of using their
+// derives, in order to to avoid unnecessary bounds on a generic `T`.
+// This problem is referred to as "perfect derive".
+// https://smallcultfollowing.com/babysteps/blog/2022/04/12/implied-bounds-and-perfect-derive/
+
/// Everything in `__public` is re-exported in `protobuf.rs`.
/// These are the items protobuf users can access directly.
#[doc(hidden)]
