seedifferently/boto_rsync — pull request #15 by jimbrowne (2013-05-31 00:28:10+00:00)
Title: Warn and exit if boto version is too old

Support for S3 encryption appeared in Boto 2.1.0; support for S3 reduced redundancy appeared in Boto 2.0. Sadly many Linux distributions still contain a pre-2.0 boto. It's better to proactively check that the available boto library is recent enough for boto-rsync to function.