[Bug 2147086] Re: [SRU] Fix noble image by dropping unused sb build

[Nick Rosbrook]

Hello Didier, or anyone else affected,

Accepted livecd-rootfs into noble-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/livecd-
rootfs/24.04.96 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
noble to verification-done-noble. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-noble. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: livecd-rootfs (Ubuntu Noble)
       Status: New => Fix Committed

** Tags added: verification-needed-noble

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https://bugs.launchpad.net/bugs/2147086

Title:
  [SRU] Fix noble image by dropping unused sb build

Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in livecd-rootfs source package in Noble:
  Fix Committed

Bug description:
  [ Impact ]

    * The current noble image fails to build since we try to build a
  snap model for sb. This one used to be synced by the Cloud team which
  doesn’t need it anymore.

    * We moved our snaps to core24, which means that this now unused
  models would need to be updated, signed, and included in the new
  livecd-rootfs for every snaps transition. The goal is to minimize now
  the maintainance cost by avoiding doing this update and remove it for
  future transition, as this is not used at all anymore.

    * The impact is at ISO build time. The option from the installer
  using that model has never been available by our end user.

  [ Test Plan ]

   1. Start a noble image build
   2. Ensure the build is succesful
   3. Try to install this Ubuntu desktop image. Installation should be successful
   4. After rebooting on the installed system, the model "classic-model.model" should no be present on the system.

  [ Where problems could occur ]

   * This is straightfoward to detect: the rootfs either can’t build, of
  the installed system can’t boot. This could be detected before
  landing.

  [ Other Info ]

   * I did a rootfs build in my ppa: https://launchpad.net/~ubuntu-wsl-
  dev/+livefs/ubuntu/noble/wsl/+build/936162 and built a rootfs from it:
  https://launchpad.net/~ubuntu-wsl-dev/+livefs/ubuntu/noble/wsl.

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