This backend has already been merged upstream and will be included in Duplicity 0.8+. If you have any bug reports, please direct them at the Duplicity mailing list at duplicity-talk@nongnu.org.
This backend needs at least Duplicity 0.7+ and python-requests python-requests-oauthlib.
1. Download:
Obtain most recent version through Launchpad. Just click the "download file" button and you should get the raw version.
2. Move:
# Linux
cp adbackend.py /usr/lib/python2.7/dist-packages/duplicity/backends/
# MacOS X
cp adbackend.py /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/duplicity/backends
3. Authenticate:
On first usage you will need to open an URL in a browser and copy the resulting URL back into the tool to enable oauth access. The data will be stored in ~/.duplicity_ad_oauthtoken.json.
duplicity source_path ad:///backup/my_new_backup
Same as Duplicity