Can't build project while defining swift settings for a package and configuration only (wrong SWIFT_ACTIVE_COMPILATION_CONDITIONS)

[iphilgood]

What happened?

Hello

I'm currently upgrading from tuist version 3.39.0 to 4.6.0 and noticed that swift settings for a package are not considered when they're only defined for configurations.

In the attached workspace, there's a project which has a dependency to a local package. Within this package, there's a class that only gets provided when the DEVELOPMENT compiler flag is enabled.

In the local package, there are swift settings defined for the compiler flag when the configuration is .debug:

swiftSettings: [
    .define("DEVELOPMENT", .when(configuration: .debug)),
]

Actual Result

The workspace doesn't compile.

Expected Result

The workspace compiles without any errors.

Findings

It compiles as as soon as I specify platforms and change the swift settings for the core package to this:

swiftSettings: [
    .define("DEVELOPMENT", .when(platforms: [.iOS], configuration: .debug)),
]

I also found the issue #5642 which might be related.

How do we reproduce it?

1. Use the attached workspace
2. Run tuist install & tuist generate
3. Run project on iOS Simulator

Error log

macOS version

14.4

Tuist version

4.6.0

Xcode version

15.3.0

[pepicrft]

Hey @iphilgood
I tested this with Tuist 4.12.1 and the provided project running:

1. tuist install
2. tuist generate
3. Compile the app

And it worked as expected. It was addressed as part of this