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Nighty Windows toolchain is not usable #85252

@bkhouri

Description

@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 

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    WindowsPlatform: WindowsbugA deviation from expected or documented behavior. Also: expected but undesirable behavior.regressiontoolchaintriage neededThis issue needs more specific labels

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