Nighty Windows toolchain is not usable

[bkhouri]

Description

Hello,

I installed the latest main nightly Swift Windows toolchain (October 2, 2025) and there appears to be an issue with the toolchain's command line

PS C:\Users\jenkins> swift --version
PS C:\Users\jenkins> swift build --help
PS C:\Users\jenkins> swift build --build-tests
PS C:\Users\jenkins> swift --help
PS C:\Users\jenkins>

Restarting did not fix the issue.

For what it's worth, I was running on MacOS Host with Windows installed in a Parallel Desktop VM.

Reproduction

1. Install the toolchain,
2. Run any swift command.

Expected behavior

The command executes as expected

Environment

Device Specifications:

Device name	JENKINS711F
Processor	Apple Silicon (3.20 GHz) (8 processors)
Installed RAM	32.0 GB
Device ID	B6D617E7-B0D5-4838-8FF9-981C8A22CC94
Product ID	00331-20250-33879-AA139
System type	64-bit operating system, ARM-based processor
Pen and touch	Pen support

Windows Specifications:

Edition	Windows 11 Pro
Version	24H2
Installed on	‎6/‎12/‎2025
OS build	26100.6899
Experience	Windows Feature Experience Pack 1000.26100.253.0

Additional information

No response

[bkhouri]

posted a forums post: https://forums.swift.org/t/latest-oct-2-2025-windows-nightly-toolchain-doa/82977

[bkhouri]

This has the same symptoms as #80356