Duplicity: How to list versions of a file?

Question

Using Duplicity I can make an incremental, efficient backup to an untrusted remote storage. This works fine and I can restore files at a specific point in time (or the next backup after that).

Well now I want to know when in the history of all the backups did a specific file change. File change timestamp and size along with the backup timestamps would be sufficient.

Any way to do that with duplicity?

EDIT: I should clarify that I want to see every change/version to that file and not only the last, e.g. when it was first introduced, when it was change. That might be at multiple backup incremental backups.

Answer 1

You might try dumping the full list of files, then searching that list for the file in question:

duplicity list-current-files url > /path/to/file-list.txt
grep filename /path/to/file-list.txt

This command is poorly documented, but each line in the file has a date that appears to be last modified time.

Answer 2

There was an answer on the mailing list by Edgar Soldin:

no, you can currently list all backed up versions. duplicity will not tell you when they were changed. this could however be implemented as duplicity internally keeps track of that.

ede/duply.net

So in essence: It is not possible with vanilla duplicity now, but the data is in duplicity metadata.