From 27e0f9eb35d32251fa5c62b960954514000280e1 Mon Sep 17 00:00:00 2001
From: JoJoJet <21144246+JoJoJet@users.noreply.github.com>
Date: Wed, 28 Dec 2022 23:25:13 -0500
Subject: [PATCH] add a comment

---
 crates/bevy_ecs/macros/src/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crates/bevy_ecs/macros/src/lib.rs b/crates/bevy_ecs/macros/src/lib.rs
index 5006196d0bb3d..3fe40c33ec9da 100644
--- a/crates/bevy_ecs/macros/src/lib.rs
+++ b/crates/bevy_ecs/macros/src/lib.rs
@@ -533,6 +533,7 @@ pub fn derive_system_param(input: TokenStream) -> TokenStream {
                 {}
             }
         }
+        // For unconditionally mutable params, we simply do not implement `ReadOnlySystemParam`.
         ParamAccess::Mutable => quote! {},
     };