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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).

My system:

~$ 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:

INSTALL PACKAGES

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

  • Cross posting is discouraged on the SE network: meta.stackexchange.com/questions/64068/… – Haxiel Oct 10 '19 at 11:35
  • Where does deja-dup search for duplicity? AFAIK the standard installation path is /usr/bin/duplicity, so set a symlink there. I assume deja-dup uses absolute paths for commands. – Fiximan Oct 31 '19 at 16:10
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deja-dup does not look for the duplicity binaries but looks at the installed packages.

Try to recompile deja-dup without HAS-PACKAGEKIT defines. This can be done by commenting out these lines in meson.build

#if packagekit_dep.found()
#common_vflags += ['--define=HAS_PACKAGEKIT']
#endif
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