"Building universal frameworks with common architectures is not possible."

[ShrikantCoder]

I've added carthage support to my library, [https://github.com/ReactiveX/RxSwift] (https://github.com/ReactiveX/RxSwift,) but for some reason that has broken the pre-existing Carthage support.

This is what happens when I run carthage update --no-use-binaries --cache-builds --platform ios

A shell task (/usr/bin/xcrun lipo -create /Users/Library/Caches/org.carthage.CarthageKit/DerivedData/14.2_14C18/RxSwift/6.6.0/Build/Intermediates.noindex/ArchiveIntermediates/RxCocoa/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/RxCocoa.framework/RxCocoa /Users/Library/Caches/org.carthage.CarthageKit/DerivedData/14.2_14C18/RxSwift/6.6.0/Build/Products/Release-iphonesimulator/RxCocoa.framework/RxCocoa -output /Users/Carthage/Build/iOS/RxCocoa.framework/RxCocoa) failed with exit code 1:
fatal error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/lipo: /Users/Library/Caches/org.carthage.CarthageKit/DerivedData/14.2_14C18/RxSwift/6.6.0/Build/Intermediates.noindex/ArchiveIntermediates/RxCocoa/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/RxCocoa.framework/RxCocoa and /Users/Library/Caches/org.carthage.CarthageKit/DerivedData/14.2_14C18/RxSwift/6.6.0/Build/Products/Release-iphonesimulator/RxCocoa.framework/RxCocoa have the same architectures (arm64) and can't be in the same fat output file

Building universal frameworks with common architectures is not possible. The device and simulator slices for "RxCocoa" both build for: arm64
Rebuild with --use-xcframeworks to create an xcframework bundle instead.