From 09d2592c034596cb96846db324160f8dac5597f0 Mon Sep 17 00:00:00 2001
From: 0xLucca <0xlucca.dev@gmail.com>
Date: Mon, 11 Mar 2024 19:04:03 +0700
Subject: [PATCH 1/3] Add Hash trait to Selector struct

---
 crates/metadata/src/specs.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/crates/metadata/src/specs.rs b/crates/metadata/src/specs.rs
index 1d9599f668..12ea68aae0 100644
--- a/crates/metadata/src/specs.rs
+++ b/crates/metadata/src/specs.rs
@@ -52,7 +52,10 @@ use serde::{
     Serialize,
 };
 #[cfg(feature = "std")]
-use std::collections::BTreeMap;
+use std::{
+    collections::BTreeMap,
+    hash::Hash,
+};
 
 /// Describes a contract.
 #[derive(Debug, PartialEq, Eq, Serialize, Deserialize, JsonSchema)]
@@ -1091,7 +1094,7 @@ where
 }
 
 /// The 4 byte selector to identify constructors and messages
-#[derive(Debug, Default, PartialEq, Eq, derive_more::From, JsonSchema)]
+#[derive(Debug, Default, PartialEq, Eq, derive_more::From, JsonSchema, Hash)]
 pub struct Selector(#[schemars(with = "String")] [u8; 4]);
 
 impl serde::Serialize for Selector {

From 0db1fbde763951f943f67a6b4b0e9fce522ac40e Mon Sep 17 00:00:00 2001
From: 0xLucca <0xlucca.dev@gmail.com>
Date: Mon, 11 Mar 2024 19:17:12 +0700
Subject: [PATCH 2/3] Update changelog

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1afe46864b..1c9207a0cb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+- Add Hash trait to Selector struct
 
 ## Version 5.0.0-rc.3
 

From 0ef12f42a11d3e7ebc8b4ba1ff38e7ab7bd16174 Mon Sep 17 00:00:00 2001
From: 0xLucca <0xlucca.dev@gmail.com>
Date: Mon, 11 Mar 2024 19:53:10 +0700
Subject: [PATCH 3/3] Make Hash derive conditional

---
 crates/metadata/src/specs.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crates/metadata/src/specs.rs b/crates/metadata/src/specs.rs
index 12ea68aae0..62ff372b7f 100644
--- a/crates/metadata/src/specs.rs
+++ b/crates/metadata/src/specs.rs
@@ -1094,7 +1094,8 @@ where
 }
 
 /// The 4 byte selector to identify constructors and messages
-#[derive(Debug, Default, PartialEq, Eq, derive_more::From, JsonSchema, Hash)]
+#[cfg_attr(feature = "std", derive(Hash))]
+#[derive(Debug, Default, PartialEq, Eq, derive_more::From, JsonSchema)]
 pub struct Selector(#[schemars(with = "String")] [u8; 4]);
 
 impl serde::Serialize for Selector {