caution apps build fails for locksmith-enabled apps (keyforkd missing tokio/sync) #299

vkobel commented 2026年06月17日 13:32:27 +02:00

Problem:
Building Caution apps with locksmith: true fails during the enclave build stage. The error indicates that the keyforkd dependency (version 0.1.5) is missing the tokio/sync feature, causing compilation failures with errors like "could not find mpsc in sync".

Code Involved:
The issue stems from keyforkd-0.1.5/src/test_util.rs:80, where the code attempts to access tokio's sync module without the necessary feature flags enabled. This problem only surfaces when building locksmith standalone with newer tokio versions (1.50.0+).

Proposed Fix:
Publish a new version of keyforkd (0.1.6) that incorporates the fix already present in the keyfork main branch (commit fe7f294), then update locksmith to depend on this corrected version. The current 0.1.5 package in the registry contains broken code that has already been remedied upstream but not yet released.

---

error[E0433]: could not find `mpsc` in `sync` keyforkd-0.1.5/src/test_util.rs:80
error[E0603]: module `sync` is private
error: could not compile `keyforkd` (lib)

**Problem:** Building Caution apps with `locksmith: true` fails during the enclave build stage. The error indicates that the `keyforkd` dependency (version 0.1.5) is missing the `tokio/sync` feature, causing compilation failures with errors like "could not find `mpsc` in `sync`". **Code Involved:** The issue stems from `keyforkd-0.1.5/src/test_util.rs:80`, where the code attempts to access tokio's sync module without the necessary feature flags enabled. This problem only surfaces when building locksmith standalone with newer tokio versions (1.50.0+). **Proposed Fix:** Publish a new version of `keyforkd` (0.1.6) that incorporates the fix already present in the keyfork main branch (commit fe7f294), then update locksmith to depend on this corrected version. The current 0.1.5 package in the registry contains broken code that has already been remedied upstream but not yet released. ---- ``` error[E0433]: could not find `mpsc` in `sync` keyforkd-0.1.5/src/test_util.rs:80 error[E0603]: module `sync` is private error: could not compile `keyforkd` (lib) ```