Mockup of the new package os interface (incomplete and non-functioning)

core/os/os2/temp_file_windows.odin

@@ -0,0 +1,29 @@
+//+private
+package os2
+
+import win32 "core:sys/windows"
+
+_create_temp :: proc(dir, pattern: string) -> (Handle, Error) {
+	return 0, .None;
+}
+
+_mkdir_temp :: proc(dir, pattern: string, allocator := context.allocator) -> (string, Error) {
+	return "", .None;
+}
+
+_temp_dir :: proc(allocator := context.allocator) -> string {
+	b := make([dynamic]u16, u32(win32.MAX_PATH), context.temp_allocator);
+	for {
+		n := win32.GetTempPathW(u32(len(b)), raw_data(b));
+		if n > u32(len(b)) {
+			resize(&b, int(n));
+			continue;
+		}
+		if n == 3 && b[1] == ':' && b[2] == '\\' {
+
+		} else if n > 0 && b[n-1] == '\\' {
+			n -= 1;
+		}
+		return win32.utf16_to_utf8(b[:n], allocator);
+	}
+}