1interface platform {
 2    /// An operating system.
 3    enum os {
 4        /// macOS.
 5        mac,
 6        /// Linux.
 7        linux,
 8        /// Windows.
 9        windows,
10    }
11
12    /// A platform architecture.
13    enum architecture {
14        /// AArch64 (e.g., Apple Silicon).
15        aarch64,
16        /// x86.
17        x86,
18        /// x86-64.
19        x8664,
20    }
21
22    /// Gets the current operating system and architecture.
23    current-platform: func() -> tuple<os, architecture>;
24}