Requesting this because I need rdiff as part of a requirement on a python lib I'm building. The API that my lib talks to requires a rsync signature file along with the main file or a rsync delta when uploading to their services. I only have a small server with about 3 GB of memory and a old processor, so I can't use WINE. Don't even know if cygwin works under wine and if anything that is built under cygwin can be ran on plain Windows.