[SoM] Unable to find swiftmodule file for OtherUnit

[chamons]

public protocol TimeUnit {
    
    static var toTimeIntervalRatio: Double { get }
    
}

public struct Interval<Unit : TimeUnit> {
    
    public init(_ value: Double) {
    }
    
    public var timeInterval: Foundation.TimeInterval {
        return 0
    }
    
    public init(timeInterval: Foundation.TimeInterval) {
        let value = timeInterval / Unit.toTimeIntervalRatio
        self.init(value)
    }
    
}

public extension Interval {
    
    func converted<OtherUnit : TimeUnit>(to otherTimeUnit: OtherUnit.Type = OtherUnit.self) -> Interval<OtherUnit> {
        return Interval<OtherUnit>(0)
    }
}

Error (Fatal): Unable to find swiftmodule file for OtherUnit for target x86_64-apple-macosx10.12. (CompilerException)

[chamons]

From Time.framework

[chamons]

I am very uncertain if this is a "real" issue, as I don't understand what's going on, but it is preventing the library from wrapping.

[stephen-hawley]

Note to future Steve: Associated type - note fully sure what they're trying to express.