feat: Re-generate bindings if canister id or candid path change (#479)

dfinity · Apr 10, 2024 · 681008a · 681008a
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diff --git a/src/ic-cdk-bindgen/CHANGELOG.md b/src/ic-cdk-bindgen/CHANGELOG.md
@@ -6,6 +6,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [unreleased]
 
+- Re-generate bindings if the canister ids changed (e.g. when switching networks) or when the path to the candid file of a dependency changed.
+
 ## [0.1.3] - 2024-02-27
 
 - Resolve CANISTER_CANDID_PATH and CANISTER_ID from standardized environment variables (uppercase canister names).

diff --git a/src/ic-cdk-bindgen/src/lib.rs b/src/ic-cdk-bindgen/src/lib.rs
@@ -53,6 +53,8 @@ fn resolve_candid_path_and_canister_id(canister_name: &str) -> (PathBuf, Princip
 
     let candid_path_var_name = format!("CANISTER_CANDID_PATH_{}", canister_name_upper);
     let candid_path_var_name_legacy = format!("CANISTER_CANDID_PATH_{}", canister_name);
+    println!("cargo:rerun-if-env-changed={candid_path_var_name}");
+    println!("cargo:rerun-if-env-changed={candid_path_var_name_legacy}");
 
     let candid_path_str = if let Ok(candid_path_str) = env::var(&candid_path_var_name) {
         candid_path_str
@@ -69,6 +71,8 @@ fn resolve_candid_path_and_canister_id(canister_name: &str) -> (PathBuf, Princip
 
     let canister_id_var_name = format!("CANISTER_ID_{}", canister_name_upper);
     let canister_id_var_name_legacy = format!("CANISTER_ID_{}", canister_name);
+    println!("cargo:rerun-if-env-changed={canister_id_var_name}");
+    println!("cargo:rerun-if-env-changed={canister_id_var_name_legacy}");
     let canister_id_str = if let Ok(canister_id_str) = env::var(&canister_id_var_name) {
         canister_id_str
     } else if let Ok(canister_id_str) = env::var(&canister_id_var_name_legacy) {