This will allow you to load font that are resources in a SPM module

Font+Autoregistering.swift

import Foundation
import UIKit

public struct Resource {
	var name: String
	var fileExtension: String
	var url: URL? {
		Bundle.module.url(forResource: name, withExtension: fileExtension)
	}
}

public enum FontRegisteringError: Error {
	case noFontFound
	case noFontDataProvider
	case noFontFromFontDataProvider
	case errorInRegisteringFont(font: CGFont, error: CFError)
}

public func autoRegisteringFont(_ fonts: [Resource]) throws {
	try fonts.forEach({ try registerFont(from: $0.url)})
}

func registerFont(from url: URL?) throws {
	guard let url = url else {
		throw FontRegisteringError.noFontFound
	}
	guard let fontDataProvider = CGDataProvider(url: url as CFURL) else {
		throw FontRegisteringError.noFontDataProvider
	}
	guard let font = CGFont(fontDataProvider) else {
		throw FontRegisteringError.noFontFromFontDataProvider
	}
	var error: Unmanaged<CFError>?
	guard CTFontManagerRegisterGraphicsFont(font, &error) else {
		throw FontRegisteringError.errorInRegisteringFont(font: font, error: error!.takeRetainedValue())
	}
}

//Usage:

public static func registerFontsForEpisode() {
	let fontToRegister = [
		Resource(name: "AbrilFatface-Regular", fileExtension: "ttf"),
		Resource(name: "DancingScript-Regular", fileExtension: "ttf"),
		Resource(name: "RobotoSlab-Regular", fileExtension: "ttf"),
	]
	do {
		try autoRegisteringFont(fontToRegister)
	}
	catch FontRegisteringError.noFontFound {
		print("No found found in Bundle")
	}
	catch FontRegisteringError.noFontDataProvider {
		print("No font data provider")
	}
	catch FontRegisteringError.noFontFromFontDataProvider {
		print("Could not create font from font data provider")
	}
	catch FontRegisteringError.errorInRegisteringFont(let font, let error) {
		print("Got error while registering font for: \(font) -> \(error)")
	}
	catch {
		dump(error)
	}
}