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Fix cached runtime embedding across feature builds #309

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Fix cached runtime embedding across feature builds #309

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5 changes: 4 additions & 1 deletion src/hyperlight-js/build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -216,7 +216,7 @@ fn bundle_runtime() {
// which normalises a relative path to absolute and requires the target file
// to already exist. An absolute path is recommended to avoid any ambiguity
// about the base directory.
let js_runtime_resource = match env::var("HYPERLIGHT_JS_RUNTIME_PATH") {
let selected_runtime = match env::var("HYPERLIGHT_JS_RUNTIME_PATH") {
Ok(path) if !path.trim().is_empty() => {
let canonical = PathBuf::from(&path)
.canonicalize()
Expand All @@ -237,6 +237,9 @@ fn bundle_runtime() {
};

let out_dir = env::var_os("OUT_DIR").unwrap();
let js_runtime_resource = Path::new(&out_dir).join("hyperlight-js-runtime");
fs::copy(&selected_runtime, &js_runtime_resource)
.expect("Failed to copy JS runtime to OUT_DIR");
let dest_path = Path::new(&out_dir).join("host_resource.rs");
let contents =
format!("pub (super) static JSRUNTIME: &[u8] = include_bytes!({js_runtime_resource:?});");
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