TaggedVersionRange

    pub const TaggedVersionRange = union(enum) {
        none: void,
        semver: std.SemanticVersion.Range,
        hurd: HurdVersionRange,
        linux: LinuxVersionRange,
        windows: WindowsVersion.Range,

        pub fn gnuLibCVersion(range: TaggedVersionRange) ?std.SemanticVersion {
            return switch (range) {
                .none, .semver, .windows => null,
                .hurd => |h| h.glibc,
                .linux => |l| l.glibc,
            };
        }
    }