Add set_wasm_version! to create custom Wasm section

contracts/cyberpunk/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cyberpunk"
-version = "0.0.0"
+version = "0.12.345"
 authors = ["Tomasz Kurcz <[email protected]>"]
 edition = "2021"
 publish = false
@@ -33,6 +33,7 @@ cosmwasm-schema = { path = "../../packages/schema" }
 cosmwasm-std = { path = "../../packages/std", default-features = false, features = ["abort", "cosmwasm_1_3"] }
 rust-argon2 = "0.8"
 thiserror = "1.0.26"
+const-str = "0.5.6"
 
 [dev-dependencies]
 cosmwasm-vm = { path = "../../packages/vm", default-features = false }

contracts/cyberpunk/src/contract.rs

@@ -5,6 +5,12 @@ use cosmwasm_std::{
 
 use crate::errors::ContractError;
 use crate::msg::{ExecuteMsg, QueryMsg};
+use crate::set_wasm_version;
+
+const CONTRACT_NAME: &str = env!("CARGO_PKG_NAME");
+const CONTRACT_VERSION: &str = env!("CARGO_PKG_VERSION");
+
+set_wasm_version!(CONTRACT_NAME, CONTRACT_VERSION);
 
 #[entry_point]
 pub fn instantiate(

contracts/cyberpunk/src/lib.rs

@@ -1,3 +1,5 @@
 pub mod contract;
 pub mod errors;
 pub mod msg;
+
+mod set_version;

contracts/cyberpunk/src/set_version.rs

@@ -0,0 +1,15 @@
+#[macro_export]
+macro_rules! set_wasm_version {
+    ($s1: expr, $s2: expr) => {
+        /// Private module with no stability guarantees
+        mod __cw5 {
+            use super::*;
+
+            const FULL: &str = const_str::concat!("/", $s1, "/", $s2);
+
+            #[link_section = "cw5"]
+            #[allow(unused)]
+            static AS_BYTES: [u8; FULL.len()] = const_str::to_byte_array!(FULL);
+        }
+    };
+}