Certbot doesn't quite work due to the ancient (v0.10.0) version of augeas(-lenses) in wheezy. After installing certbot-auto it chokes on:
The error was: NotSupportedError('Apache plugin support requires libaugeas0 and augeas-lenses version 1.2.0 or higher, please make sure you have you have those installed.',)
The page talking about a solid beta apache plugin should skip this section I guess.