> Some software is installed from Debian GNU/Linux side, with an explicit exception.
> That makes them susceptible to unexpected changes and I wonder if it would be
> advisable to add a backports.list in addition to sid.list to be able to get more
> stable and yet newer packages.
Tails 3.6 will come with stretch-backports enabled by default.
We now fetch some packages from there and I don't expect it'll change
until Tails 4.0 (Buster) is released.
Cheers,
--
intrigeri