Fresh install on Windows fails to compile

[RuiNelson]

Description

I just installed Swift 6.1.2 on Windows, using the commands provided on the Swift website. I tried to compile a package (which compiles on macOS), and I get several Invalid manifest errors, and at the end I get the error:

<unknown>:0: error: unable to load standard library for target 'x86_64-unknown-windows-msvc'.

Reproduction

1. Fresh Windows 11 install
2. Execute commands on https://www.swift.org/install/windows/
3. `swift` works on the command line
4. Try to compile my Package with `swift build`

Expected behavior

Package compiled

Environment

Swift version 6.1.2 (swift-6.1.2-RELEASE)
Target: x86_64-unknown-windows-msvc

Additional information

No response

[compnerd]

That sounds like an environment issue (what is the value of SDKROOT?). Did you restart after installation? (Existing command prompts and terminals will not pick up the new value).

[RuiNelson]

That sounds like an environment issue (what is the value of SDKROOT?). Did you restart after installation? (Existing command prompts and terminals will not pick up the new value).

Yes, I restarted

$env:SDKROOT
C:\Users\***username***\AppData\Local\Programs\Swift\Platforms\6.1.2\Windows.platform\Developer\SDKs\Windows.sdk\

[compnerd]

Did you customise the installation? What host architecture are you using?

[RuiNelson]

Did you customise the installation? What host architecture are you using?

No, just default settings. The architecture is x86_64.

[compnerd]

Can you try building something like cassowary? (https://github.com/compnerd/cassowary). If that fails with the same error, can you build again with -v and provide the log?