I've already configured ~/.ssh/config to have a "backup" alias, with a corresponding SSH key to use, port number, and various other configuration. I'd like to just tell obnam to use sftp://backup/... and have obnam use that alias and configuration, but obnam doesn't seem to want to do that: at a minimum, it appears to ignore the port number I specified in ~/.ssh/config, so I can't easily tell what else it ignored.

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For the same reasons as discussed in the other bug, I'll mark this as done. --liw