When using "Backups" (a.k.a. deja-dup) - it doesn't find duplicity, although it's installed:
I have been trying to backup using "Backups" (a.k.a. deja-dup), and it turns out that the current duplicity (which deja-dup uses) still has the "Unicode bug" (it fails when dealing with Unicode strings). (I have "Backups" (a.k.a. deja-dup) installed on my system: "deja-dup backup tool" v 37.0, and had duplicity v 0.7.17).
~$ lsb_release -a Description: Ubuntu 18.04.3 LTS; Release: 18.04; Codename: bionic
So, I then removed the existing installation of duplicity, and installed duplicity 0.8 from source: https://launchpad.net/duplicity. It installs duplicity at: /usr/local/bin. It's in PATH:
~$ echo $PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
After loading and installing all the requirements, duplicity 0.8 itself runs fine:
~$ duplicity -V duplicity 0.8.05
But, when running "Backups" (deja-dup), it doesn't find it. A window pops up, saying:
In order to continue, the following package needs to be installed: duplicity
I installed dconf-editor, found /org/gnome/deja-dup, but I don't see there any settings for the duplicity path.
nautilus and "apt list --installed" don't see it, either.
Note: cross posted here