[Bug 2027537] Re: Do not let package installation affected by phased-updates

[Steve Langasek]

This appears to be a duplicate of LP: #1928264.

> Since then, the implementation of phasing moved to the upgrade code path
> using keep backs, and phasing is no longer effective during install.

Julian, please clarify what you mean by 'no longer effective'.  The
requirements when building images are that we should never install
packages within the image that will be at later versions than what apt
or one of the graphical frontends would select for installation (because
otherwise, at the time the image is released, users may install and then
find themselves unable to install other binary packages from the same
source package due to phasing and mismatched versioned dependencies);
and that we should never have packages in the package pool which apt or
a frontend will fail to select for installation due to phasing.

So will apt always pick the latest version for 'install', ignoring the
phasing information?  Or will it pick the newest version without any
phasing?

(Either way, we need to handle this for jammy, where a debian-cd change
is needed for the package pools.)

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to livecd-rootfs in Ubuntu.
https://bugs.launchpad.net/bugs/2027537

Title:
  Do not let package installation affected by phased-updates

Status in livecd-rootfs package in Ubuntu:
  Invalid

Bug description:
  https://discourse.ubuntu.com/t/phased-updates-in-apt-in-21-04/20345
  discussed about the possible effects on livecd-rootfs since APT phased
  updates feature is available.

  However, I haven't seen any changes regarding to this issue yet, while
  for OEM images, we may have package installations in the hooks that
  phased-updates might affect the installation if the package turned out
  to be phased. Do we need to worry about this?

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/livecd-rootfs/+bug/2027537/+subscriptions