cargo hyperlight new generates an unusable project on Windows ARM64

[cshung]

Problem

cargo hyperlight new generates projects that cannot build on a native Windows ARM64 host.

The current template has two x64-era assumptions in src/new/mod.rs:

• HYPERLIGHT_VERSION is 0.15. Its hyperlight-libc rejects the automatically selected aarch64 target with Unsupported target architecture: aarch64.
• GUEST_ARCH is always x86_64, so the generated host loads target/x86_64-hyperlight-none/... even when cargo hyperlight build selects aarch64-hyperlight-none from the native host architecture.

This is still present on main at cargo-hyperlight 0.1.13.

Reproduction

On native Windows ARM64:

cargo hyperlight new chw
cd chw/guest
cargo hyperlight build

The build selects AArch64 automatically, then fails in Hyperlight 0.15:

Unsupported target architecture: aarch64

Hardware validation

I changed the generated guest and host dependencies to the Hyperlight 0.16 ARM64 WHP PR and changed the guest path to aarch64-hyperlight-none.

The generated sample then passed end to end on a Surface Laptop 7 with WHP:

• Debug guest build and execution.
• Release guest build and execution.
• Host callback and typed guest calls.
• Persistent guest state.
• Snapshot and restore.
• 10 release runs with surrogate mappings.
• 10 release runs with HYPERLIGHT_MAX_SURROGATES=0.

Expected output was produced on every run.

Suggested direction

Generate the dependency version and guest architecture from supported/current values instead of fixed 0.15 and x86_64. The build command already defaults its target from std::env::consts::ARCH, so the scaffold should use the same architecture decision.