Fix missing external target settings with config conditions

[fortmarek]

Resolves #6157

Short description 📝

The issue with the Lookin dependency is that it has a .define setting with a config condition: https://github.com/QMUI/LookinServer/blob/develop/Package.swift#L53

While we decode that condition, we'd never actually use that setting.

The solution is to add the .define to the specified configuration settings.

How to test the changes locally 🧐

• Generate app_with_spm_dependencies
• Ensure SPM_LOOKIN_SERVER_ENABLED is defined for Debug configuration
• Install the lookin app and run the fixture app -> you should see the app in the Lookin app

Contributor checklist ✅

• The code has been linted using run mise run lint:fix
• The change is tested via unit testing or acceptance testing, or both
• The title of the PR is formulated in a way that is usable as a changelog entry
• In case the PR introduces changes that affect users, the documentation has been updated

Reviewer checklist ✅

• The code architecture and patterns are consistent with the rest of the codebase
• Reviewer has checked that, if needed, the PR includes the label changelog:added, changelog:fixed, or changelog:changed, and the title is usable as a changelog entry

[pepicrft]

What does it mean to get a settings dictionary for a platform nil? I'd iterate on the implementation to make the code more readable.

[fortmarek]

If it's nil, it doesn't take a platform in the account. It was here before, but sure, let me refactor it 👍

[topkim993]

I want to test it, but how can I tuist install and tuist generate locally?

Due to mise, it runs as 4.9.0.

mise tuist@4.9.0 ✓ installed

If there are any related documents, can I provide guidance?

I confirmed that it was processed automatically.

via mise ⚠️ pnpm is a community-developed plugin

[fortmarek]

@topkim993 The easiest way is to usually run tuist via Xcode as described here

[rakuyoMo]

@fortmarek @pepicrft Hello, Is there any new development here? I hope the next version will contain this fix, it's really important to us.