It is expected that deja-dup would ask to install duplicity. Duplicity is not preinstalled, to avoid having python2 on disk. The fact that the packagekit dialog warns about untrusted sources makes me think you have PPAs installed and packagekit should display that in a kinder way (as that fedora bug suggests).
I don't think there's anything deja-dup can do here. I'll reassign to packagekit. ** Package changed: deja-dup (Ubuntu) => packagekit (Ubuntu) ** Summary changed: - deja-dup asks to install software not from a trusted source + "install software not from a trusted source" dialog could be more user friendly -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to deja-dup in Ubuntu. https://bugs.launchpad.net/bugs/1638510 Title: "install software not from a trusted source" dialog could be more user friendly Status in packagekit package in Ubuntu: Confirmed Bug description: deja-dup opens a dialog "The software is not from a trusted source. Do not install this package unless you are sure it is safe to do so" But I'm obviously not sure it is safe to do so! ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: deja-dup 34.2-0ubuntu3 ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0 Uname: Linux 4.8.0-26-generic x86_64 ApportVersion: 2.20.3-0ubuntu8 Architecture: amd64 CurrentDesktop: Unity Date: Wed Nov 2 09:51:06 2016 InstallationDate: Installed on 2016-10-31 (1 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) SourcePackage: deja-dup UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/packagekit/+bug/1638510/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
