find

pub fn find(allocator: std.mem.Allocator, arch: std.Target.Cpu.Arch) error{ OutOfMemory, NotFound, PathTooLong }!WindowsSdk {
    if (builtin.os.tag != .windows) return error.NotFound;

    //note(dimenus): If this key doesn't exist, neither the Win 8 SDK nor the Win 10 SDK is installed
    const roots_key = RegistryWtf8.openKey(windows.HKEY_LOCAL_MACHINE, windows_kits_reg_key, .{ .wow64_32 = true }) catch |err| switch (err) {
        error.KeyNotFound => return error.NotFound,
    };
    defer roots_key.closeKey();

    const windows10sdk = Installation.find(allocator, roots_key, "KitsRoot10", "", "v10.0") catch |err| switch (err) {
        error.InstallationNotFound => null,
        error.PathTooLong => null,
        error.VersionTooLong => null,
        error.OutOfMemory => return error.OutOfMemory,
    };
    errdefer if (windows10sdk) |*w| w.free(allocator);

    const windows81sdk = Installation.find(allocator, roots_key, "KitsRoot81", "winver", "v8.1") catch |err| switch (err) {
        error.InstallationNotFound => null,
        error.PathTooLong => null,
        error.VersionTooLong => null,
        error.OutOfMemory => return error.OutOfMemory,
    };
    errdefer if (windows81sdk) |*w| w.free(allocator);

    const msvc_lib_dir: ?[]const u8 = MsvcLibDir.find(allocator, arch) catch |err| switch (err) {
        error.MsvcLibDirNotFound => null,
        error.OutOfMemory => return error.OutOfMemory,
    };
    errdefer allocator.free(msvc_lib_dir);

    return .{
        .windows10sdk = windows10sdk,
        .windows81sdk = windows81sdk,
        .msvc_lib_dir = msvc_lib_dir,
    };
}