From 5db05d30448de1353bb533d267279e25fa0fc209 Mon Sep 17 00:00:00 2001
From: Max Gilmour <max.gilmour@canonical.com>
Date: Wed, 22 Jul 2026 13:59:12 -0700
Subject: [PATCH] Fix wasm-mappings build failure

---
 wasm-mappings/source-map-mappings-wasm-api/src/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wasm-mappings/source-map-mappings-wasm-api/src/lib.rs b/wasm-mappings/source-map-mappings-wasm-api/src/lib.rs
index d91ed381..597edd58 100644
--- a/wasm-mappings/source-map-mappings-wasm-api/src/lib.rs
+++ b/wasm-mappings/source-map-mappings-wasm-api/src/lib.rs
@@ -251,6 +251,7 @@ unsafe fn mappings_mut<'a>(
     mappings.as_mut().unwrap()
 }
 
+#[link(wasm_import_module = "env")]
 extern "C" {
     fn mapping_callback(
         // These two parameters are always valid.