Tuesday, 21 August 2018

Re: Transition of LXD from deb to snap

On Tue, Aug 21, 2018 at 03:03:48PM -0400, Stéphane Graber wrote:
> > > A branch of the stable channel of those tracks will be created and
> > > closed per policy on seeded snaps (allowing to push emergency snaps to
> > > those users bypassing the upstream).

> > Excellent!

> I actually had a question about that part, the wiki says to create an
> ubuntu-18.10 branch and use that during snap installation.

> But then what's responsible for switching this to a ubuntu-19.04 branch
> during the next upgrade?

Support for this has landed in ubuntu-release-upgrader 1:18.10.8 in cosmic;
LP: #1748581. Note that this is based on a whitelist of known seeded snaps
that are encoded in u-r-u as part of the quirks handling (which is not ideal
since it duplicates the package seeds), so this will need to be updated to
include the lxd snap here.

> Since the same version of the snap will be pushed to all Ubuntu series,
> wouldn't it make more sense to have it just be "ubuntu", saving us the
> trouble of having to figure out what to do on Ubuntu release upgrades
> and reflecting the fact that the snap is the same for all series.

This escape hatch exists precisely for the case that the upstream stable
snap does not integrate correctly in a release-agnostic fashion and
per-Ubuntu-release quirking is needed. Better to have it and never use it
than to need it and not have it.

Steve Langasek Give me a lever long enough and a Free OS
Debian Developer to set it on, and I can move the world.
Ubuntu Developer https://www.debian.org/
slangasek@ubuntu.com vorlon@debian.org