Thank you for the excellent news.
The version APT proposes on my Trisquel 8 system is
3.5.18-1-ubuntu1+8.0trisquel1. Is it because I have enabled backports?
There is no such backport in xenial-backports. In bionic-updates, the
version is 3.5.18-1ubuntu1.4, which indeed looks more recent than the one APT
proposes me.
If the package does not require recent versions of its dependencies, it can
be installed on an older distribution. Downloading the package on
https://packages.debian.org/buster/amd64/timeshift/download and
double-clicking on it, GDebi, which is installed by default, tells some
dependency
triskel and trisquel (notice the spelling difference) provide different sets
of default packages. Mainly, triskel comes with the KDE desktop environment
and trisquel with the MATE desktop environment. You can have the full list of
packages in any ISO by reading the file with the same URL
That would be there: https://trisquel.info/node/add/project-issue/trisquel
It would help to discover whether the bug still exists on Trisquel 9, trying
to install libgnutls-dev on the live system:
http://jenkins.trisquel.info/makeiso-etiona/iso/
If the bug does not exist anymore, it is
The same happen if I try to install libgnutls-dev on my system. It looks
like a bug...
I would try to install the libvte-2.91-dev package.