WSLC scripts and tests now check for ARM targets on ARM systems

[Elliot (theelliotm)]

📖 Description

Currently, WSLC scripts and tests hardcode the x86 target. ARM systems must manually pass WxcExecPath to circumvent error messages saying wxc-exec.exe not found.

This PR changes the scripts/tests so they check the processor architecture and use the appropriate target.

🔗 References

🔍 Validation

Ran all scripts manually on my ARM machine.

✅ Checklist

• Signed the Contributor License Agreement
• Linked to an issue
• Updated documentation (if applicable)
• Updated Copilot instructions (if build, architecture, or conventions changed)
• If this PR changes Cargo.lock, the dependency-feed-check check passes (see docs/pull-requests.md)

📋 Issue Type

• Bug fix
• Feature
• Task

Microsoft Reviewers: Open in CodeFlow

[azure-pipelines]

Azure Pipelines:
There may be pipelines that require an authorized user to comment /azp run to run.

[Copilot]

Copilot review overview

🟡 Changes recommended

Host detection remains incorrect when PowerShell or Command Prompt runs under x86/x64 emulation on ARM64.

Get a fresh assessment by requesting another Copilot review.

Review effort: Balanced
Findings: 8 · 1

Open (9)

• Detect host architecture via PROCESSOR_ARCHITEW6432 · New
• Detect host architecture via PROCESSOR_ARCHITEW6432 · New
• Detect host architecture via PROCESSOR_ARCHITEW6432 · New
• Detect host architecture via PROCESSOR_ARCHITEW6432 · New
• Detect host architecture via PROCESSOR_ARCHITEW6432 · New
• Detect host architecture via PROCESSOR_ARCHITEW6432 · New
• Detect host architecture via PROCESSOR_ARCHITEW6432 · New
• Detect host architecture via PROCESSOR_ARCHITEW6432 · New
• Handle ARM64 emulation in build.bat architecture detection · New

What changed in this PR

Updates WSLc tooling to locate ARM64 build outputs on ARM64 hosts.

Changes:

• Selects ARM64 or x64 Rust targets based on detected architecture.
• Updates WSLc documentation with ARM64 build-path guidance.

File	Description
scripts/​setup-wslc.ps1	Adds architecture-aware binary discovery.
tests/​scripts/​run_wslc_all_tests.ps1	Selects host-target test binary.
tests/​scripts/​run_wslc_state_aware_tests.ps1	Selects host-target lifecycle binary.
tests/​scripts/​run_wslc_proxy_test.ps1	Adds architecture-aware discovery.
tests/​scripts/​run_wslc_object_test.ps1	Adds architecture-aware discovery.
tests/​scripts/​run_wslc_most_specific_test.ps1	Adds architecture-aware discovery.
tests/​scripts/​run_wslc_dotdot_alias_test.ps1	Adds architecture-aware discovery.
tests/​scripts/​run_wslc_denied_masking_test.ps1	Adds architecture-aware discovery.
docs/​wsl/​wslc-sdk-bindings.md	Documents the ARM64 Cargo target.
docs/​wsl/​wsl-container-getting-started.md	Explains architecture-specific output paths.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[Jeff Whiteside (jsidewhite)]

[Jeff Whiteside (jsidewhite)]

$DaemonExe = Join-Path (Split-Path -Parent $WxcExec) "wxc-wslc-daemon.exe"

Maybe makes more sense to calculate a $bin path instead of an $WxcExec path?

---

Refers to: tests/scripts/run_wslc_state_aware_tests.ps1:101 in cef5e60. [](commit_id = cef5e60, deletion_comment = False)

[Copilot]

Copilot review overview

🟡 Changes recommended

The standard backend-validation dispatcher still rejects ARM64 WSLC runs before invoking the updated test suite.

Get a fresh assessment by requesting another Copilot review.

Review effort: Balanced
Findings: 1

Open (1)

• Remove stale x64-only guard blocking WSLC ARM64 validation · New

Resolved since last review (9)

• Detect host architecture via PROCESSOR_ARCHITEW6432
• Detect host architecture via PROCESSOR_ARCHITEW6432
• Detect host architecture via PROCESSOR_ARCHITEW6432
• Detect host architecture via PROCESSOR_ARCHITEW6432
• Detect host architecture via PROCESSOR_ARCHITEW6432
• Detect host architecture via PROCESSOR_ARCHITEW6432
• Detect host architecture via PROCESSOR_ARCHITEW6432
• Detect host architecture via PROCESSOR_ARCHITEW6432
• Handle ARM64 emulation in build.bat architecture detection

[Copilot]

Copilot review overview

🟡 Changes recommended

The unresolved architecture-detection thread still applies because PROCESSOR_ARCHITECTURE can describe the PowerShell process rather than the host OS.

Get a fresh assessment by requesting another Copilot review.

Review effort: Balanced
Findings: None

Resolved since last review (1)

• Remove stale x64-only guard blocking WSLC ARM64 validation