If you're writing a swift package, it's important to remember that the LAPACK preprocessor macros are a C++ setting and as such your Package.swift should be defined similarly as .target( name: "MiniGrad", cxxSettings: [ .define("ACCELERATE_NEW_LAPACK", to: "1") ], linkerSettings: [ .linkedFramework("Accelerate") ] )

See the attached screenshot above if it helps!

Sadly I have the same issue. Specifying an AVVideoCompositionInstructionProtocol with requiredSourceTrackIDs seems to fail the export process with a "Cannot Decode" error