Working directory unsupported with the swiftbuild build system on Amazon Linux 2

[cmcgee1024]

Is it reproducible with SwiftPM command-line tools: swift build, swift test, swift package etc?

• Confirmed reproduction steps with SwiftPM CLI. The description text must include reproduction steps with either of command-line SwiftPM commands, swift build, swift test, swift package etc.

Description

The following error is reported when building certain packages with the swiftbuild build system on an Amazon Linux 2 system:

error: working-directory unsupported on this platform

See #8558 for two automated tests that exhibit this error on AL2.

Expected behavior

It is expected that Amazon Linux 2 should work like the other Linux platforms.

Actual behavior

This error is thrown when running certain types of packages, possibly involving plugins.

Steps to reproduce

No response

Swift Package Manager version/commit hash

main

Swift & OS version (output of swift --version ; uname -a)

No response

[cmcgee1024]

See swiftlang/swift-build#441 for the issue in Swift Build.

[jakepetroules]

For this particular code path, llbuild is the issue, not Swift Build (though Swift Build separately needs fixes).

[kcieplak]

See #8545 for the tests that trigger the working directory failure.