Swift Package Manager SystemPackageProvider Syntax

Package.swift

let package = Package(
    name: "Copenssl",
    pkgConfig: "openssl",
    providers: [
        .brew("openssl"),
        .apt("openssl", "libssl-dev")
    ]
)

SystemPackageProvider.swift

struct SystemPackageProvider {
    enum PackageManager {
        case apt
        case brew
    }
    
    let packageManager: PackageManager
    let packages: [String]

    init(_ packageManager: PackageManager, packages: [String]) {
        self.packageManager = packageManager
        self.packages = packages
    }
    
    static func apt(_ packages: String...) -> SystemPackageProvider {
        return SystemPackageProvider(.brew, packages: packages)
    }
    
    static func brew(_ packages: String...) -> SystemPackageProvider {
        return SystemPackageProvider(.brew, packages: packages)
    }
}